Update dependencies, use more descriptive record

Complete type, amount, and enchant options
  - Still missing player and chunk bucket completion
Update to Java 16 for main plugin
  - Min supported version 1.16 requires Java 16
Determine uniqueness based on identifier for pseudojson

.github/workflows/ci.yml

@@ -0,0 +1,77 @@
+name: OpenInv CI
+
+on:
+  push:
+  pull_request_target:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+
+      - name: Set Up Java
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'adopt'
+          java-version: '17'
+
+      # Use cache to speed up build
+      - name: Cache Maven Repo
+        uses: actions/cache@v2
+        id: cache
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+
+      # Install Spigot dependencies.
+      # This script uses Maven to check all required installations and ensure that they are present.
+      - name: Install Spigot Dependencies
+        run: . scripts/install_spigot_dependencies.sh
+
+      - name: Build With Maven
+        run: mvn -e clean package -am -P all
+
+      # Upload artifacts
+      - name: Upload Distributable Jar
+        id: upload-final
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: ./target/OpenInv.jar
+      - name: Upload API Jar
+        id: upload-api
+        uses: actions/upload-artifact@v2
+        with:
+          name: api
+          path: ./api/target/openinvapi*.jar
+
+  release:
+    name: Create Github Release
+    needs: [ build ]
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set Release Variables
+        run: bash ./scripts/set_release_env.sh
+
+      - name: Download Artifacts
+        uses: actions/download-artifact@v2
+
+      - name: Create Release
+        id: create-release
+        uses: softprops/action-gh-release@v0.1.5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          name: ${{ env.VERSIONED_NAME }}
+          body: ${{ env.GENERATED_CHANGELOG }}
+          draft: true
+          prerelease: false
+          files: ./dist/OpenInv.jar

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Release to CurseForge
+
+on:
+  release:
+    types: [ released ]
+
+jobs:
+  curseforge_release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Fetch Github Release Asset
+        uses: dsaltares/fetch-gh-release-asset@0.0.5
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          version: ${{ github.event.release.id }}
+          file: OpenInv.jar
+
+      - name: Set CurseForge Variables
+        run: . scripts/set_curseforge_env.sh "${{ github.event.release.body }}"
+
+      - name: Create CurseForge Release
+        uses: itsmeow/curseforge-upload@v3
+        with:
+          token: ${{ secrets.CURSEFORGE_TOKEN }}
+          project_id: 31432
+          game_endpoint: minecraft
+          file_path: ./OpenInv.jar
+          display_name: "${{ github.event.release.name }}"
+          game_versions: "${{ env.CURSEFORGE_MINECRAFT_VERSIONS }}"
+          release_type: release
+          changelog_type: markdown
+          changelog: "${{ env.CURSEFORGE_CHANGELOG }}"

.gitignore

@@ -1,10 +1,10 @@
 **/.settings
-**/.gitignore
 **/.project
 **/.classpath
-**/.idea
-**/target
-**/bin
-**/lib
-**/out
-**dependency-reduced-pom.xml
+**/.idea/
+**.iml
+**/target/
+**/bin/
+**/out/
+**/dependency-reduced-pom.xml
+**/pom.xml.versionsBackup

1_4_5/pom.xml

@@ -1,28 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-
-  <parent>
-    <groupId>com.lishid</groupId>
-    <artifactId>openinv</artifactId>
-    <version>1.0-SNAPSHOT</version>
-  </parent>
-
-  <artifactId>openinvadapter1_4_5</artifactId>
-  <name>OpenInvAdapter1_4_5</name>
-
-  <dependencies>
-    <dependency>
-      <groupId>com.lishid</groupId>
-      <artifactId>openinvplugin</artifactId>
-      <version>1.0-SNAPSHOT</version>
-    </dependency>
-    <dependency>
-      <groupId>org.bukkit</groupId>
-      <artifactId>craftbukkit</artifactId>
-      <version>1.4.5-R1.0</version>
-      <scope>provided</scope>
-    </dependency>
-  </dependencies>
-
-</project>

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/AnySilentContainer.java

@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-import java.lang.reflect.Field;
-
-import com.lishid.openinv.internal.IAnySilentContainer;
-
-import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.entity.Player;
-
-// Volatile
-import net.minecraft.server.v1_4_5.AxisAlignedBB;
-import net.minecraft.server.v1_4_5.BlockEnderChest;
-import net.minecraft.server.v1_4_5.EntityOcelot;
-import net.minecraft.server.v1_4_5.EntityPlayer;
-import net.minecraft.server.v1_4_5.IInventory;
-import net.minecraft.server.v1_4_5.InventoryEnderChest;
-import net.minecraft.server.v1_4_5.InventoryLargeChest;
-import net.minecraft.server.v1_4_5.Packet100OpenWindow;
-import net.minecraft.server.v1_4_5.TileEntityChest;
-import net.minecraft.server.v1_4_5.TileEntityEnderChest;
-import net.minecraft.server.v1_4_5.World;
-
-import org.bukkit.craftbukkit.v1_4_5.entity.CraftPlayer;
-
-public class AnySilentContainer implements IAnySilentContainer {
-
-    @Override
-    public boolean isAnySilentContainer(org.bukkit.block.Block block) {
-        return block.getType() == Material.ENDER_CHEST || block.getState() instanceof org.bukkit.block.Chest;
-    }
-
-    @Override
-    public boolean isAnyContainerNeeded(Player p, org.bukkit.block.Block block) {
-        // FOR REFERENCE, LOOK AT net.minecraft.server.BlockChest
-        EntityPlayer player = ((CraftPlayer) p).getHandle();
-        World world = player.world;
-
-        if (block instanceof BlockEnderChest) {
-            // Ender chests are not blocked by ocelots.
-            return world.t(block.getX(), block.getY() + 1, block.getZ());
-        }
-
-        // If block or ocelot on top
-        if (isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ())) {
-            return true;
-        }
-
-        int id = world.getTypeId(block.getX(), block.getY(), block.getZ());
-
-        // If block next to chest is chest and has a block or ocelot on top
-        if (world.getTypeId(block.getX(), block.getY(), block.getZ() + 1) == id) {
-            return isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ() + 1);
-        } else if(world.getTypeId(block.getX(), block.getY(), block.getZ() - 1) == id) {
-            return isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ() - 1);
-        } else if (world.getTypeId(block.getX() + 1, block.getY(), block.getZ()) == id) {
-            return isBlockedChest(world, block.getX() + 1, block.getY() + 1, block.getZ());
-        } else if (world.getTypeId(block.getX() - 1, block.getY(), block.getZ()) == id) {
-            return isBlockedChest(world, block.getX() - 1, block.getY() + 1, block.getZ());
-        }
-
-        return false;
-    }
-
-    private boolean isBlockedChest(World world, int x, int y, int z) {
-        return world.t(x, y + 1, z) || hasOcelotOnTop(world, x, y, z);
-    }
-
-    private boolean hasOcelotOnTop(World world, int x, int y, int z) {
-        for (Object localEntity : world.a(EntityOcelot.class,
-                AxisAlignedBB.a(x, y + 1, z, x + 1, y + 2, z + 1))) {
-            EntityOcelot localEntityOcelot = (EntityOcelot) localEntity;
-            if (localEntityOcelot.isSitting()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    @Override
-    public boolean activateContainer(Player p, boolean silentchest, org.bukkit.block.Block block) {
-
-        EntityPlayer player = ((CraftPlayer) p).getHandle();
-
-        // Silent ender chest is API-only
-        if (silentchest && block.getType() == Material.ENDER_CHEST) {
-            p.openInventory(p.getEnderChest());
-            return true;
-        }
-
-        World world = player.world;
-        Object tile = world.getTileEntity(block.getX(), block.getY(), block.getZ());
-
-        if (tile == null) {
-            return false;
-        }
-
-        if (tile instanceof TileEntityEnderChest) {
-            // Anychest ender chest. See net.minecraft.server.BlockEnderChest
-            InventoryEnderChest enderChest = player.getEnderChest();
-            enderChest.a((TileEntityEnderChest) tile);
-            player.openContainer(enderChest);
-            return true;
-        }
-
-        if (!(tile instanceof IInventory)) {
-            return false;
-        }
-
-        int id = world.getTypeId(block.getX(), block.getY(), block.getZ());
-
-        if (world.getTypeId(block.getX(), block.getY(), block.getZ() + 1) == id) {
-            tile = new InventoryLargeChest("Large chest", (IInventory) tile, (TileEntityChest) world.getTileEntity(block.getX(), block.getY(), block.getZ() + 1));
-        } else if (world.getTypeId(block.getX(), block.getY(), block.getZ() - 1) == id) {
-            tile = new InventoryLargeChest("Large chest", (TileEntityChest) world.getTileEntity(block.getX(), block.getY(), block.getZ() - 1), (IInventory) tile);
-        } else if (world.getTypeId(block.getX() + 1, block.getY(), block.getZ()) == id) {
-            tile = new InventoryLargeChest("Large chest", (IInventory) tile, (TileEntityChest) world.getTileEntity(block.getX() + 1, block.getY(), block.getZ()));
-        } else if (world.getTypeId(block.getX() - 1, block.getY(), block.getZ()) == id) {
-            tile = new InventoryLargeChest("Large chest", (TileEntityChest) world.getTileEntity(block.getX() - 1, block.getY(), block.getZ()), (IInventory) tile);
-        }
-
-        boolean returnValue = false;
-        if (!silentchest) {
-            player.openContainer((IInventory) tile);
-            returnValue = true;
-        } else {
-            try {
-                int windowId = 0;
-                try {
-                    Field windowID = player.getClass().getDeclaredField("containerCounter");
-                    windowID.setAccessible(true);
-                    windowId = windowID.getInt(player);
-                    windowId = windowId % 100 + 1;
-                    windowID.setInt(player, windowId);
-                } catch (NoSuchFieldException e) {}
-
-                player.netServerHandler.sendPacket(new Packet100OpenWindow(windowId, 0, ((IInventory) tile).getName(), ((IInventory) tile).getSize()));
-                player.activeContainer = new SilentContainerChest(player.inventory, ((IInventory) tile));
-                player.activeContainer.windowId = windowId;
-                player.activeContainer.addSlotListener(player);
-                returnValue = true;
-            } catch (Exception e) {
-                e.printStackTrace();
-                p.sendMessage(ChatColor.RED + "Error while sending silent chest.");
-            }
-        }
-
-        return returnValue;
-    }
-
-}

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/InventoryAccess.java

@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-import com.lishid.openinv.internal.IInventoryAccess;
-import com.lishid.openinv.internal.ISpecialEnderChest;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import com.lishid.openinv.internal.InternalAccessor;
-
-import org.bukkit.inventory.Inventory;
-
-// Volatile
-import net.minecraft.server.v1_4_5.IInventory;
-
-import org.bukkit.craftbukkit.v1_4_5.inventory.CraftInventory;
-
-public class InventoryAccess implements IInventoryAccess {
-
-    @Override
-    public boolean isSpecialPlayerInventory(Inventory inventory) {
-        if (inventory instanceof CraftInventory) {
-            return ((CraftInventory) inventory).getInventory() instanceof ISpecialPlayerInventory;
-        }
-        return InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory) instanceof ISpecialPlayerInventory;
-    }
-
-    @Override
-    public ISpecialPlayerInventory getSpecialPlayerInventory(Inventory inventory) {
-        IInventory inv;
-        if (inventory instanceof CraftInventory) {
-            inv = ((CraftInventory) inventory).getInventory();
-        } else {
-            inv = InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory);
-        }
-
-        if (inv instanceof SpecialPlayerInventory) {
-            return (SpecialPlayerInventory) inv;
-        }
-        return null;
-    }
-
-    @Override
-    public boolean isSpecialEnderChest(Inventory inventory) {
-        if (inventory instanceof CraftInventory) {
-            return ((CraftInventory) inventory).getInventory() instanceof ISpecialEnderChest;
-        }
-        return InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory) instanceof ISpecialEnderChest;
-    }
-
-    @Override
-    public ISpecialEnderChest getSpecialEnderChest(Inventory inventory) {
-        IInventory inv;
-        if (inventory instanceof CraftInventory) {
-            inv = ((CraftInventory) inventory).getInventory();
-        } else {
-            inv = InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory);
-        }
-
-        if (inv instanceof SpecialEnderChest) {
-            return (SpecialEnderChest) inv;
-        }
-        return null;
-    }
-
-}

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/PlayerDataManager.java

@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-import com.lishid.openinv.internal.IPlayerDataManager;
-
-import org.bukkit.Bukkit;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.entity.Player;
-
-// Volatile
-import net.minecraft.server.v1_4_5.EntityPlayer;
-import net.minecraft.server.v1_4_5.ItemInWorldManager;
-import net.minecraft.server.v1_4_5.MinecraftServer;
-
-import org.bukkit.craftbukkit.v1_4_5.CraftServer;
-
-public class PlayerDataManager implements IPlayerDataManager {
-
-    @Override
-    public Player loadPlayer(OfflinePlayer offline) {
-        // Ensure the player has data
-        if (offline == null || !offline.hasPlayedBefore()) {
-            return null;
-        }
-
-        MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
-
-        // Create an entity to load the player data
-        EntityPlayer entity = new EntityPlayer(server, server.getWorldServer(0), offline.getName(),
-                new ItemInWorldManager(server.getWorldServer(0)));
-
-        // Get the bukkit entity
-        Player target = (entity == null) ? null : entity.getBukkitEntity();
-        if (target != null) {
-            // Load data
-            target.loadData();
-        }
-        // Return the entity
-        return target;
-    }
-
-    @Override
-    public String getPlayerDataID(OfflinePlayer player) {
-        return player.getName();
-    }
-
-}

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/SilentContainerChest.java

@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-// Volatile
-import net.minecraft.server.v1_4_5.ContainerChest;
-import net.minecraft.server.v1_4_5.EntityHuman;
-import net.minecraft.server.v1_4_5.IInventory;
-import net.minecraft.server.v1_4_5.ItemStack;
-import net.minecraft.server.v1_4_5.PlayerInventory;
-
-public class SilentContainerChest extends ContainerChest {
-
-    public SilentContainerChest(IInventory i1, IInventory i2) {
-        super(i1, i2);
-        // Send close signal
-        i2.f();
-    }
-
-    @Override
-    public void b(EntityHuman entityHuman) {
-        // Don't send close signal twice, might screw up
-        PlayerInventory playerinventory = entityHuman.inventory;
-
-        if (playerinventory.getCarried() != null) {
-            ItemStack carried = playerinventory.getCarried();
-            playerinventory.setCarried(null);
-            entityHuman.drop(carried);
-        }
-    }
-
-}

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/SpecialEnderChest.java

@@ -1,128 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-import java.lang.reflect.Field;
-import java.util.ArrayList;
-import java.util.List;
-
-import com.lishid.openinv.internal.ISpecialEnderChest;
-
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-import org.bukkit.inventory.InventoryHolder;
-
-// Volatile
-import net.minecraft.server.v1_4_5.IInventory;
-import net.minecraft.server.v1_4_5.InventoryEnderChest;
-import net.minecraft.server.v1_4_5.InventorySubcontainer;
-import net.minecraft.server.v1_4_5.ItemStack;
-
-import org.bukkit.craftbukkit.v1_4_5.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_4_5.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_4_5.inventory.CraftInventory;
-
-public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
-
-    private final InventoryEnderChest enderChest;
-    private final CraftInventory inventory = new CraftInventory(this);
-    private final List<HumanEntity> transaction = new ArrayList<HumanEntity>();
-    private boolean playerOnline = false;
-    private CraftPlayer owner;
-    private int maxStack = MAX_STACK;
-
-    public SpecialEnderChest(Player p, Boolean online) {
-        super(((CraftPlayer) p).getHandle().getEnderChest().getName(),
-                ((CraftPlayer) p).getHandle().getEnderChest().getSize());
-        CraftPlayer player = (CraftPlayer) p;
-        this.enderChest = player.getHandle().getEnderChest();
-        this.owner = player;
-        this.items = enderChest.getContents();
-    }
-
-    @Override
-    public Inventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOnline(Player player) {
-        if (!playerOnline) {
-            try {
-                owner = (CraftPlayer) player;
-                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
-                Field field = playerEnderChest.getClass().getField("items");
-                field.setAccessible(true);
-                field.set(playerEnderChest, this.items);
-            } catch (Exception e) {}
-            playerOnline = true;
-        }
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        playerOnline = false;
-    }
-
-    @Override
-    public boolean isInUse() {
-        return !this.getViewers().isEmpty();
-    }
-
-    @Override
-    public ItemStack[] getContents() {
-        return this.items;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        transaction.add(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        transaction.remove(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return transaction;
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.owner;
-    }
-
-    @Override
-    public void setMaxStackSize(int size) {
-        maxStack = size;
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return maxStack;
-    }
-
-    @Override
-    public void update() {
-        super.update();
-        enderChest.update();
-    }
-
-}

1_4_5/src/main/java/com/lishid/openinv/internal/v1_4_5/SpecialPlayerInventory.java

@@ -1,237 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_5;
-
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-
-// Volatile
-import net.minecraft.server.v1_4_5.ItemStack;
-import net.minecraft.server.v1_4_5.PlayerInventory;
-
-import org.bukkit.craftbukkit.v1_4_5.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_4_5.inventory.CraftInventory;
-
-public class SpecialPlayerInventory extends PlayerInventory implements ISpecialPlayerInventory {
-
-    private final ItemStack[] extra = new ItemStack[5];
-    private final CraftInventory inventory = new CraftInventory(this);
-    private boolean playerOnline = false;
-
-    public SpecialPlayerInventory(Player bukkitPlayer, Boolean online) {
-        super(((CraftPlayer) bukkitPlayer).getHandle());
-        this.playerOnline = online;
-        this.items = player.inventory.items;
-        this.armor = player.inventory.armor;
-    }
-
-    @Override
-    public Inventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOnline(Player player) {
-        if (!playerOnline) {
-            this.player = ((CraftPlayer) player).getHandle();
-            this.player.inventory.items = this.items;
-            this.player.inventory.armor = this.armor;
-            playerOnline = true;
-        }
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        playerOnline = false;
-    }
-
-    @Override
-    public boolean isInUse() {
-        return !this.getViewers().isEmpty();
-    }
-
-    @Override
-    public ItemStack[] getContents() {
-        ItemStack[] contents = new ItemStack[getSize()];
-        System.arraycopy(items, 0, contents, 0, items.length);
-        System.arraycopy(armor, 0, contents, items.length, armor.length);
-        return contents;
-    }
-
-    @Override
-    public int getSize() {
-        return super.getSize() + 5;
-    }
-
-    @Override
-    public ItemStack getItem(int i) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        }
-        else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        }
-        else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        return is[i];
-    }
-
-    @Override
-    public ItemStack splitStack(int i, int j) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        }
-        else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        }
-        else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        if (is[i] != null) {
-            ItemStack itemstack;
-
-            if (is[i].count <= j) {
-                itemstack = is[i];
-                is[i] = null;
-                return itemstack;
-            }
-            else {
-                itemstack = is[i].a(j);
-                if (is[i].count == 0) {
-                    is[i] = null;
-                }
-
-                return itemstack;
-            }
-        }
-        else {
-            return null;
-        }
-    }
-
-    @Override
-    public ItemStack splitWithoutUpdate(int i) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        }
-        else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        }
-        else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        if (is[i] != null) {
-            ItemStack itemstack = is[i];
-
-            is[i] = null;
-            return itemstack;
-        }
-        else {
-            return null;
-        }
-    }
-
-    @Override
-    public void setItem(int i, ItemStack itemstack) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        }
-        else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        }
-        else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        // Effects
-        if (is == this.extra) {
-            player.drop(itemstack);
-            itemstack = null;
-        }
-
-        is[i] = itemstack;
-
-        player.defaultContainer.b();
-    }
-
-    private int getReversedItemSlotNum(int i) {
-        if (i >= 27)
-            return i - 27;
-        else
-            return i + 9;
-    }
-
-    private int getReversedArmorSlotNum(int i) {
-        if (i == 0)
-            return 3;
-        if (i == 1)
-            return 2;
-        if (i == 2)
-            return 1;
-        if (i == 3)
-            return 0;
-        else
-            return i;
-    }
-
-    @Override
-    public String getName() {
-        if (player.getName().length() > 16) {
-            return player.getName().substring(0, 16);
-        }
-        return player.getName();
-    }
-
-}

1_4_6/pom.xml

@@ -1,28 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-
-  <parent>
-    <groupId>com.lishid</groupId>
-    <artifactId>openinv</artifactId>
-    <version>1.0-SNAPSHOT</version>
-  </parent>
-
-  <artifactId>openinvadapter1_4_6</artifactId>
-  <name>OpenInvAdapter1_4_6</name>
-
-  <dependencies>
-    <dependency>
-      <groupId>com.lishid</groupId>
-      <artifactId>openinvplugin</artifactId>
-      <version>1.0-SNAPSHOT</version>
-    </dependency>
-    <dependency>
-      <groupId>org.bukkit</groupId>
-      <artifactId>craftbukkit</artifactId>
-      <version>1.4.6-R0.3</version>
-      <scope>provided</scope>
-    </dependency>
-  </dependencies>
-
-</project>

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/AnySilentContainer.java

@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-import java.lang.reflect.Field;
-
-import com.lishid.openinv.internal.IAnySilentContainer;
-
-import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.entity.Player;
-
-// Volatile
-import net.minecraft.server.v1_4_6.AxisAlignedBB;
-import net.minecraft.server.v1_4_6.BlockEnderChest;
-import net.minecraft.server.v1_4_6.EntityOcelot;
-import net.minecraft.server.v1_4_6.EntityPlayer;
-import net.minecraft.server.v1_4_6.IInventory;
-import net.minecraft.server.v1_4_6.InventoryEnderChest;
-import net.minecraft.server.v1_4_6.InventoryLargeChest;
-import net.minecraft.server.v1_4_6.Packet100OpenWindow;
-import net.minecraft.server.v1_4_6.TileEntityChest;
-import net.minecraft.server.v1_4_6.TileEntityEnderChest;
-import net.minecraft.server.v1_4_6.World;
-
-import org.bukkit.craftbukkit.v1_4_6.entity.CraftPlayer;
-
-public class AnySilentContainer implements IAnySilentContainer {
-
-    @Override
-    public boolean isAnySilentContainer(org.bukkit.block.Block block) {
-        return block.getType() == Material.ENDER_CHEST || block.getState() instanceof org.bukkit.block.Chest;
-    }
-
-    @Override
-    public boolean isAnyContainerNeeded(Player p, org.bukkit.block.Block block) {
-        // FOR REFERENCE, LOOK AT net.minecraft.server.BlockChest
-        EntityPlayer player = ((CraftPlayer) p).getHandle();
-        World world = player.world;
-
-        if (block instanceof BlockEnderChest) {
-            // Ender chests are not blocked by ocelots.
-            return world.t(block.getX(), block.getY() + 1, block.getZ());
-        }
-
-        // If block or ocelot on top
-        if (isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ())) {
-            return true;
-        }
-
-        int id = world.getTypeId(block.getX(), block.getY(), block.getZ());
-
-        // If block next to chest is chest and has a block or ocelot on top
-        if (world.getTypeId(block.getX(), block.getY(), block.getZ() + 1) == id) {
-            return isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ() + 1);
-        } else if(world.getTypeId(block.getX(), block.getY(), block.getZ() - 1) == id) {
-            return isBlockedChest(world, block.getX(), block.getY() + 1, block.getZ() - 1);
-        } else if (world.getTypeId(block.getX() + 1, block.getY(), block.getZ()) == id) {
-            return isBlockedChest(world, block.getX() + 1, block.getY() + 1, block.getZ());
-        } else if (world.getTypeId(block.getX() - 1, block.getY(), block.getZ()) == id) {
-            return isBlockedChest(world, block.getX() - 1, block.getY() + 1, block.getZ());
-        }
-
-        return false;
-    }
-
-    private boolean isBlockedChest(World world, int x, int y, int z) {
-        return world.t(x, y + 1, z) || hasOcelotOnTop(world, x, y, z);
-    }
-
-    private boolean hasOcelotOnTop(World world, int x, int y, int z) {
-        for (Object localEntity : world.a(EntityOcelot.class,
-                AxisAlignedBB.a(x, y + 1, z, x + 1, y + 2, z + 1))) {
-            EntityOcelot localEntityOcelot = (EntityOcelot) localEntity;
-            if (localEntityOcelot.isSitting()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    @Override
-    public boolean activateContainer(Player p, boolean silentchest, org.bukkit.block.Block block) {
-
-        EntityPlayer player = ((CraftPlayer) p).getHandle();
-
-        // Silent ender chest is API-only
-        if (silentchest && block.getType() == Material.ENDER_CHEST) {
-            p.openInventory(p.getEnderChest());
-            return true;
-        }
-
-        World world = player.world;
-        Object tile = world.getTileEntity(block.getX(), block.getY(), block.getZ());
-
-        if (tile == null) {
-            return false;
-        }
-
-        if (tile instanceof TileEntityEnderChest) {
-            // Anychest ender chest. See net.minecraft.server.BlockEnderChest
-            InventoryEnderChest enderChest = player.getEnderChest();
-            enderChest.a((TileEntityEnderChest) tile);
-            player.openContainer(enderChest);
-            return true;
-        }
-
-        if (!(tile instanceof IInventory)) {
-            return false;
-        }
-
-        int id = world.getTypeId(block.getX(), block.getY(), block.getZ());
-
-        if (world.getTypeId(block.getX(), block.getY(), block.getZ() + 1) == id) {
-            tile = new InventoryLargeChest("Large chest", (IInventory) tile, (TileEntityChest) world.getTileEntity(block.getX(), block.getY(), block.getZ() + 1));
-        } else if (world.getTypeId(block.getX(), block.getY(), block.getZ() - 1) == id) {
-            tile = new InventoryLargeChest("Large chest", (TileEntityChest) world.getTileEntity(block.getX(), block.getY(), block.getZ() - 1), (IInventory) tile);
-        } else if (world.getTypeId(block.getX() + 1, block.getY(), block.getZ()) == id) {
-            tile = new InventoryLargeChest("Large chest", (IInventory) tile, (TileEntityChest) world.getTileEntity(block.getX() + 1, block.getY(), block.getZ()));
-        } else if (world.getTypeId(block.getX() - 1, block.getY(), block.getZ()) == id) {
-            tile = new InventoryLargeChest("Large chest", (TileEntityChest) world.getTileEntity(block.getX() - 1, block.getY(), block.getZ()), (IInventory) tile);
-        }
-
-        boolean returnValue = false;
-        if (!silentchest) {
-            player.openContainer((IInventory) tile);
-            returnValue = true;
-        } else {
-            try {
-                int windowId = 0;
-                try {
-                    Field windowID = player.getClass().getDeclaredField("containerCounter");
-                    windowID.setAccessible(true);
-                    windowId = windowID.getInt(player);
-                    windowId = windowId % 100 + 1;
-                    windowID.setInt(player, windowId);
-                } catch (NoSuchFieldException e) {}
-
-                player.playerConnection.sendPacket(new Packet100OpenWindow(windowId, 0, ((IInventory) tile).getName(), ((IInventory) tile).getSize()));
-                player.activeContainer = new SilentContainerChest(player.inventory, ((IInventory) tile));
-                player.activeContainer.windowId = windowId;
-                player.activeContainer.addSlotListener(player);
-                returnValue = true;
-            } catch (Exception e) {
-                e.printStackTrace();
-                p.sendMessage(ChatColor.RED + "Error while sending silent chest.");
-            }
-        }
-
-        return returnValue;
-    }
-
-}

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/InventoryAccess.java

@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-import com.lishid.openinv.internal.IInventoryAccess;
-import com.lishid.openinv.internal.ISpecialEnderChest;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import com.lishid.openinv.internal.InternalAccessor;
-
-import org.bukkit.inventory.Inventory;
-
-// Volatile
-import net.minecraft.server.v1_4_6.IInventory;
-
-import org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventory;
-
-public class InventoryAccess implements IInventoryAccess {
-
-    @Override
-    public boolean isSpecialPlayerInventory(Inventory inventory) {
-        if (inventory instanceof CraftInventory) {
-            return ((CraftInventory) inventory).getInventory() instanceof ISpecialPlayerInventory;
-        }
-        return InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory) instanceof ISpecialPlayerInventory;
-    }
-
-    @Override
-    public ISpecialPlayerInventory getSpecialPlayerInventory(Inventory inventory) {
-        IInventory inv;
-        if (inventory instanceof CraftInventory) {
-            inv = ((CraftInventory) inventory).getInventory();
-        } else {
-            inv = InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory);
-        }
-
-        if (inv instanceof SpecialPlayerInventory) {
-            return (SpecialPlayerInventory) inv;
-        }
-        return null;
-    }
-
-    @Override
-    public boolean isSpecialEnderChest(Inventory inventory) {
-        if (inventory instanceof CraftInventory) {
-            return ((CraftInventory) inventory).getInventory() instanceof ISpecialEnderChest;
-        }
-        return InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory) instanceof ISpecialEnderChest;
-    }
-
-    @Override
-    public ISpecialEnderChest getSpecialEnderChest(Inventory inventory) {
-        IInventory inv;
-        if (inventory instanceof CraftInventory) {
-            inv = ((CraftInventory) inventory).getInventory();
-        } else {
-            inv = InternalAccessor.grabFieldOfTypeFromObject(IInventory.class, inventory);
-        }
-
-        if (inv instanceof SpecialEnderChest) {
-            return (SpecialEnderChest) inv;
-        }
-        return null;
-    }
-
-}

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/PlayerDataManager.java

@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-import com.lishid.openinv.internal.IPlayerDataManager;
-
-import org.bukkit.Bukkit;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.entity.Player;
-
-// Volatile
-import net.minecraft.server.v1_4_6.EntityPlayer;
-import net.minecraft.server.v1_4_6.MinecraftServer;
-import net.minecraft.server.v1_4_6.PlayerInteractManager;
-
-import org.bukkit.craftbukkit.v1_4_6.CraftServer;
-
-public class PlayerDataManager implements IPlayerDataManager {
-
-    @Override
-    public Player loadPlayer(OfflinePlayer offline) {
-        // Ensure the player has data
-        if (offline == null || !offline.hasPlayedBefore()) {
-            return null;
-        }
-
-        MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
-
-        // Create an entity to load the player data
-        EntityPlayer entity = new EntityPlayer(server, server.getWorldServer(0), offline.getName(),
-                new PlayerInteractManager(server.getWorldServer(0)));
-
-        // Get the bukkit entity
-        Player target = (entity == null) ? null : entity.getBukkitEntity();
-        if (target != null) {
-            // Load data
-            target.loadData();
-        }
-        // Return the entity
-        return target;
-    }
-
-    @Override
-    public String getPlayerDataID(OfflinePlayer player) {
-        return player.getName();
-    }
-
-}

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/SilentContainerChest.java

@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-// Volatile
-import net.minecraft.server.v1_4_6.ContainerChest;
-import net.minecraft.server.v1_4_6.EntityHuman;
-import net.minecraft.server.v1_4_6.IInventory;
-import net.minecraft.server.v1_4_6.ItemStack;
-import net.minecraft.server.v1_4_6.PlayerInventory;
-
-public class SilentContainerChest extends ContainerChest {
-
-    public SilentContainerChest(IInventory i1, IInventory i2) {
-        super(i1, i2);
-        // Send close signal
-        i2.f();
-    }
-
-    @Override
-    public void b(EntityHuman entityHuman) {
-        // Don't send close signal twice, might screw up
-        PlayerInventory playerinventory = entityHuman.inventory;
-
-        if (playerinventory.getCarried() != null) {
-            ItemStack carried = playerinventory.getCarried();
-            playerinventory.setCarried(null);
-            entityHuman.drop(carried);
-        }
-    }
-
-}

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/SpecialEnderChest.java

@@ -1,128 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-import java.lang.reflect.Field;
-import java.util.ArrayList;
-import java.util.List;
-
-import com.lishid.openinv.internal.ISpecialEnderChest;
-
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-import org.bukkit.inventory.InventoryHolder;
-
-// Volatile
-import net.minecraft.server.v1_4_6.IInventory;
-import net.minecraft.server.v1_4_6.InventoryEnderChest;
-import net.minecraft.server.v1_4_6.InventorySubcontainer;
-import net.minecraft.server.v1_4_6.ItemStack;
-
-import org.bukkit.craftbukkit.v1_4_6.entity.CraftHumanEntity;
-import org.bukkit.craftbukkit.v1_4_6.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventory;
-
-public class SpecialEnderChest extends InventorySubcontainer implements IInventory, ISpecialEnderChest {
-
-    private final InventoryEnderChest enderChest;
-    private final CraftInventory inventory = new CraftInventory(this);
-    private final List<HumanEntity> transaction = new ArrayList<HumanEntity>();
-    private boolean playerOnline = false;
-    private CraftPlayer owner;
-    private int maxStack = MAX_STACK;
-
-    public SpecialEnderChest(Player p, Boolean online) {
-        super(((CraftPlayer) p).getHandle().getEnderChest().getName(),
-                ((CraftPlayer) p).getHandle().getEnderChest().getSize());
-        CraftPlayer player = (CraftPlayer) p;
-        this.enderChest = player.getHandle().getEnderChest();
-        this.owner = player;
-        this.items = enderChest.getContents();
-    }
-
-    @Override
-    public Inventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOnline(Player player) {
-        if (!playerOnline) {
-            try {
-                owner = (CraftPlayer) player;
-                InventoryEnderChest playerEnderChest = owner.getHandle().getEnderChest();
-                Field field = playerEnderChest.getClass().getField("items");
-                field.setAccessible(true);
-                field.set(playerEnderChest, this.items);
-            } catch (Exception e) {}
-            playerOnline = true;
-        }
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        playerOnline = false;
-    }
-
-    @Override
-    public boolean isInUse() {
-        return !this.getViewers().isEmpty();
-    }
-
-    @Override
-    public ItemStack[] getContents() {
-        return this.items;
-    }
-
-    @Override
-    public void onOpen(CraftHumanEntity who) {
-        transaction.add(who);
-    }
-
-    @Override
-    public void onClose(CraftHumanEntity who) {
-        transaction.remove(who);
-    }
-
-    @Override
-    public List<HumanEntity> getViewers() {
-        return transaction;
-    }
-
-    @Override
-    public InventoryHolder getOwner() {
-        return this.owner;
-    }
-
-    @Override
-    public void setMaxStackSize(int size) {
-        maxStack = size;
-    }
-
-    @Override
-    public int getMaxStackSize() {
-        return maxStack;
-    }
-
-    @Override
-    public void update() {
-        super.update();
-        enderChest.update();
-    }
-
-}

1_4_6/src/main/java/com/lishid/openinv/internal/v1_4_6/SpecialPlayerInventory.java

@@ -1,229 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal.v1_4_6;
-
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-
-// Volatile
-import net.minecraft.server.v1_4_6.ItemStack;
-import net.minecraft.server.v1_4_6.PlayerInventory;
-
-import org.bukkit.craftbukkit.v1_4_6.entity.CraftPlayer;
-import org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventory;
-
-public class SpecialPlayerInventory extends PlayerInventory implements ISpecialPlayerInventory {
-
-    private final ItemStack[] extra = new ItemStack[5];
-    private final CraftInventory inventory = new CraftInventory(this);
-    private boolean playerOnline = false;
-
-    public SpecialPlayerInventory(Player bukkitPlayer, Boolean online) {
-        super(((CraftPlayer) bukkitPlayer).getHandle());
-        this.playerOnline = online;
-        this.items = player.inventory.items;
-        this.armor = player.inventory.armor;
-    }
-
-    @Override
-    public Inventory getBukkitInventory() {
-        return inventory;
-    }
-
-    @Override
-    public void setPlayerOnline(Player player) {
-        if (!playerOnline) {
-            this.player = ((CraftPlayer) player).getHandle();
-            this.player.inventory.items = this.items;
-            this.player.inventory.armor = this.armor;
-            playerOnline = true;
-        }
-    }
-
-    @Override
-    public void setPlayerOffline() {
-        playerOnline = false;
-    }
-
-    @Override
-    public boolean isInUse() {
-        return !this.getViewers().isEmpty();
-    }
-
-    @Override
-    public ItemStack[] getContents() {
-        ItemStack[] contents = new ItemStack[getSize()];
-        System.arraycopy(items, 0, contents, 0, items.length);
-        System.arraycopy(armor, 0, contents, items.length, armor.length);
-        return contents;
-    }
-
-    @Override
-    public int getSize() {
-        return super.getSize() + 5;
-    }
-
-    @Override
-    public ItemStack getItem(int i) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        } else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        } else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        return is[i];
-    }
-
-    @Override
-    public ItemStack splitStack(int i, int j) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        } else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        } else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        if (is[i] != null) {
-            ItemStack itemstack;
-
-            if (is[i].count <= j) {
-                itemstack = is[i];
-                is[i] = null;
-                return itemstack;
-            } else {
-                itemstack = is[i].a(j);
-                if (is[i].count == 0) {
-                    is[i] = null;
-                }
-
-                return itemstack;
-            }
-        }
-
-        return null;
-    }
-
-    @Override
-    public ItemStack splitWithoutUpdate(int i) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        } else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        } else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        if (is[i] != null) {
-            ItemStack itemstack = is[i];
-
-            is[i] = null;
-            return itemstack;
-        }
-
-        return null;
-    }
-
-    @Override
-    public void setItem(int i, ItemStack itemstack) {
-        ItemStack[] is = this.items;
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.armor;
-        } else {
-            i = getReversedItemSlotNum(i);
-        }
-
-        if (i >= is.length) {
-            i -= is.length;
-            is = this.extra;
-        } else if (is == this.armor) {
-            i = getReversedArmorSlotNum(i);
-        }
-
-        // Effects
-        if (is == this.extra) {
-            player.drop(itemstack);
-            itemstack = null;
-        }
-
-        is[i] = itemstack;
-
-        player.defaultContainer.b();
-    }
-
-    private int getReversedItemSlotNum(int i) {
-        if (i >= 27) {
-            return i - 27;
-        }
-        return i + 9;
-    }
-
-    private int getReversedArmorSlotNum(int i) {
-        if (i == 0) {
-            return 3;
-        }
-        if (i == 1) {
-            return 2;
-        }
-        if (i == 2) {
-            return 1;
-        }
-        if (i == 3) {
-            return 0;
-        }
-        return i;
-    }
-
-    @Override
-    public String getName() {
-        if (player.getName().length() > 16) {
-            return player.getName().substring(0, 16);
-        }
-        return player.getName();
-    }
-
-}

README.MD

@@ -7,51 +7,15 @@ OpenInv is a [Bukkit plugin](https://dev.bukkit.org/bukkit-plugins/openinv/) whi
   - Cross-world support! Don't grant `OpenInv.crossworld`
   - No self-opening! Don't grant `OpenInv.openself`
   - Drop items as the player! Place items in the unused slots to the right of the armor to drop them
-- **OpenEnder**: Open anyone's inventory, even if they're offline.
+- **OpenEnder**: Open anyone's ender chest, even if they're offline.
   - Read-only mode! No edits allowed! Don't grant `OpenInv.editender`
   - Cross-world support! Don't grant `OpenInv.crossworld`
-  - No self-opening! Don't grant `OpenInv.openself`
-- **SilentChest**: Open containers without displaying an animation or making sound.
-- **AnyChest**: Open containers, even if blocked by ocelots or blocks.
+  - No opening others! Don't grant `OpenInv.openenderall`
+- **SilentContainer**: Open containers without displaying an animation or making sound.
+- **AnyContainer**: Open containers, even if blocked by ocelots or blocks.
 
 ## Commands
-<table width=100%>
-  <tr>
-    <th width=175px>Command</th>
-    <th>Aliases</th>
-    <th>Description</th>
-  </tr>
-  <tr>
-    <td>/openinv [player]</td>
-    <td>oi, inv, open</td>
-    <td>Open a player's inventory. If unspecified, will select last player opened or own if none opened previously.</td>
-  </tr>
-  <tr>
-    <td>/openender [player]</td>
-    <td>oe</td>
-    <td>Open a player's ender chest. If unspecified, will select last player opened or own if none opened previously.</td>
-  </tr>
-  <tr>
-    <td>/searchinv &ltitem&gt [minAmount]</td>
-    <td>si</td>
-    <td>Lists all online players that have a certain item in their inventory.</td>
-  </tr>
-  <tr>
-    <td>/searchender &ltitem&gt [minAmount]</td>
-    <td>se</td>
-    <td>Lists all online players that have a certain item in their ender chest.</td>
-  </tr>
-  <tr>
-    <td>/anychest [check]</td>
-    <td>ac</td>
-    <td>Check or toggle the AnyChest function, allowing opening blocked containers.</td>
-  </tr>
-  <tr>
-    <td>/silentchest [check]</td>
-    <td>sc</td>
-    <td>Check or toggle the SilentChest function, allowing opening containers silently.</td>
-  </tr>
-</table>
+See [the wiki](https://github.com/Jikoo/OpenInv/wiki/Commands).
 
 ## Permissions
 <table>
@@ -75,12 +39,20 @@ OpenInv is a [Bukkit plugin](https://dev.bukkit.org/bukkit-plugins/openinv/) whi
     <td>OpenInv.editinv</td>
     <td>Required to make changes to open inventories.</td>
   </tr>
+  <tr>
+      <td>OpenInv.openonline</td>
+      <td>Allows users to open online players' inventories. For compatibility reasons this is granted by the nodes OpenInv.openinv and OpenInv.openender.</td>
+  </tr>
+  <tr>
+      <td>OpenInv.openoffline</td>
+      <td>Allows users to open offline players' inventories. For compatibility reasons this is granted by the nodes OpenInv.openinv and OpenInv.openender.</td>
+  </tr>
   <tr>
     <td>OpenInv.openender</td>
     <td>Required to use /openender.</td>
   </tr>
   <tr>
-    <td>OpenInv.editinv</td>
+    <td>OpenInv.editender</td>
     <td>Required to make changes to open ender chests.</td>
   </tr>
   <tr>
@@ -103,37 +75,71 @@ OpenInv is a [Bukkit plugin](https://dev.bukkit.org/bukkit-plugins/openinv/) whi
     <td>OpenInv.search</td>
     <td>Required to use /searchinv and /searchender.</td>
   </tr>
+  <tr>
+    <td>OpenInv.searchenchant</td>
+    <td>Required to use /searchenchant.</td>
+  </tr>
   <tr>
     <td>OpenInv.anychest</td>
     <td>Required to use /anychest.</td>
   </tr>
+  <tr>
+    <td>OpenInv.any.default</td>
+    <td>Cause AnyContainer to be enabled by default.</td>
+  </tr>
   <tr>
     <td>OpenInv.silent</td>
-    <td>Required to use /silentchest.</td>
+    <td>Required to use /silentcontainer.</td>
+  </tr>
+  <tr>
+    <td>OpenInv.silent.default</td>
+    <td>Cause SilentContainer to be enabled by default.</td>
+  </tr>
+  <tr>
+    <td>OpenInv.spectate</td>
+    <td>Allows users in spectate gamemode to edit inventories.</td>
   </tr>
 </table>
 
 ## For Developers
-To compile, the relevant Craftbukkit/Spigot jars must be installed in your local repository using the install plugin.  
-Ex: `mvn install:install-file -Dpackaging=jar -Dfile=spigot-1.11-R0.1-SNAPSHOT.jar -DgroupId=org.spigotmc -DartifactId=spigot -Dversion=1.11-R0.1-SNAPSHOT`
 
-Compiling OpenInv for a specific version is very easy - just compile the correct module.
-
-Compiling for a set of versions is slightly more complex. You'll need to use a profile for the versions you want to compile. Provided profiles are latest, modern (versions 1.8+), and all. For more information, check out the [official guide](http://maven.apache.org/guides/introduction/introduction-to-profiles.html).
-
-## License
+### As a Dependency
+The OpenInv API is available via [JitPack](https://jitpack.io/).
+```xml
+  <repositories>
+    <repository>
+      <id>jitpack.io</id>
+      <url>https://jitpack.io</url>
+    </repository>
+  </repositories>
+```
+```xml
+  <dependencies>
+    <dependency>
+      <groupId>com.github.jikoo.OpenInv</groupId>
+      <artifactId>openinvapi</artifactId>
+      <version>${openinv.version}</version>
+    </dependency>
+  </dependencies>
 ```
-Copyright (C) 2011-2014 lishid.  All rights reserved.
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation,  version 3.
+### Compilation
+To compile, the relevant Spigot jars must be installed in your local repository using the `install` plugin:
+```shell
+mvn install:install-file -Dpackaging=jar -Dfile=spigot-1.8-R0.1-SNAPSHOT.jar \
+    -DgroupId=org.spigotmc -DartifactId=spigot -Dversion=1.8-R0.1-SNAPSHOT
+```
+Note that BuildTools automatically installs produced files. If you use BuildTools to compile Spigot locally, you don't need to install it manually.  
+If you want to use Paper as a dependency, you can install it by executing PaperClip with the property `paperclip.install` set to true:
+```shell
+wget -O paperclip.jar https://papermc.io/api/v1/paper/1.16.5/latest/download
+java -jar -Dpaperclip.install=true paperclip.jar
+```
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+To compile for a single version, specify the NMS revision you are targeting: `mvn -pl <NMS module> -am clean install`
 
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-```
+To compile for a set of versions, you'll need to use a profile. The only provided profile is `all`. Select a profile using the `-P` argument: `mvn clean package -am -P all`
+
+For more information, check out the [official Maven guide](http://maven.apache.org/guides/introduction/introduction-to-profiles.html).
+
+The final file is `target/OpenInv.jar`

api/pom.xml

@@ -0,0 +1,49 @@
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <artifactId>openinvparent</artifactId>
+    <groupId>com.lishid</groupId>
+    <version>4.1.9-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>openinvapi</artifactId>
+  <name>OpenInvAPI</name>
+
+  <dependencies>
+    <dependency>
+      <artifactId>annotations</artifactId>
+      <groupId>org.jetbrains</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>spigot-api</artifactId>
+      <groupId>org.spigotmc</groupId>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

api/src/main/java/com/lishid/openinv/IOpenInv.java

@@ -0,0 +1,310 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv;
+
+import com.lishid.openinv.internal.IAnySilentContainer;
+import com.lishid.openinv.internal.IInventoryAccess;
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import com.lishid.openinv.util.InventoryAccess;
+import com.lishid.openinv.util.StringMetric;
+import java.util.UUID;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Interface defining behavior for the OpenInv plugin.
+ *
+ * @author Jikoo
+ */
+public interface IOpenInv {
+
+    /**
+     * Check the configuration value for whether or not OpenInv saves player data when unloading
+     * players. This is exclusively for users who do not allow editing of inventories, only viewing,
+     * and wish to prevent any possibility of bugs such as lishid#40. If true, OpenInv will not ever
+     * save any edits made to players.
+     *
+     * @return false unless configured otherwise
+     */
+    boolean disableSaving();
+
+    /**
+     * Gets the active ISilentContainer implementation.
+     *
+     * @return the ISilentContainer
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    @NotNull IAnySilentContainer getAnySilentContainer();
+
+    /**
+     * Gets the active IInventoryAccess implementation.
+     *
+     * @return the IInventoryAccess
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    @Deprecated
+    default @NotNull IInventoryAccess getInventoryAccess() {
+        return new InventoryAccess();
+    }
+
+    /**
+     * Gets the provided player's AnyChest setting.
+     *
+     * @param player the OfflinePlayer
+     * @return true if AnyChest is enabled
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    boolean getPlayerAnyChestStatus(@NotNull OfflinePlayer player);
+
+    /**
+     * Gets a unique identifier by which the OfflinePlayer can be referenced. Using the value
+     * returned to look up a Player will generally be much faster for later implementations.
+     *
+     * @param offline the OfflinePlayer
+     * @return the identifier
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    default @NotNull String getPlayerID(@NotNull OfflinePlayer offline) {
+        return offline.getUniqueId().toString();
+    }
+
+    /**
+     * Gets a player's SilentChest setting.
+     *
+     * @param offline the OfflinePlayer
+     * @return true if SilentChest is enabled
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    boolean getPlayerSilentChestStatus(@NotNull OfflinePlayer offline);
+
+    /**
+     * Gets an ISpecialEnderChest for the given Player.
+     *
+     * @param player the Player
+     * @param online true if the Player is currently online
+     * @return the ISpecialEnderChest
+     * @throws IllegalStateException  if the server version is unsupported
+     * @throws InstantiationException if the ISpecialEnderChest could not be instantiated
+     */
+    @NotNull ISpecialEnderChest getSpecialEnderChest(@NotNull Player player, boolean online) throws InstantiationException;
+
+    /**
+     * Gets an ISpecialPlayerInventory for the given Player.
+     *
+     * @param player the Player
+     * @param online true if the Player is currently online
+     * @return the ISpecialPlayerInventory
+     * @throws IllegalStateException  if the server version is unsupported
+     * @throws InstantiationException if the ISpecialPlayerInventory could not be instantiated
+     */
+    @NotNull ISpecialPlayerInventory getSpecialInventory(@NotNull Player player, boolean online) throws InstantiationException;
+
+    /**
+     * Checks if the server version is supported by OpenInv.
+     *
+     * @return true if the server version is supported
+     */
+    boolean isSupportedVersion();
+
+    /**
+     * Load a Player from an OfflinePlayer. May return null under some circumstances.
+     *
+     * @param offline the OfflinePlayer to load a Player for
+     * @return the Player, or null
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline);
+
+    /**
+     * Get an OfflinePlayer by name.
+     * <p>
+     * Note: This method is potentially very heavily blocking. It should not ever be called on the
+     * main thread, and if it is, a stack trace will be displayed alerting server owners to the
+     * call.
+     *
+     * @param name the name of the Player
+     * @return the OfflinePlayer with the closest matching name or null if no players have ever logged in
+     */
+    default @Nullable OfflinePlayer matchPlayer(@NotNull String name) {
+
+        // Warn if called on the main thread - if we resort to searching offline players, this may take several seconds.
+        if (Bukkit.getServer().isPrimaryThread()) {
+            this.getLogger().warning("Call to OpenInv#matchPlayer made on the main thread!");
+            this.getLogger().warning("This can cause the server to hang, potentially severely.");
+            this.getLogger().log(Level.WARNING, new Throwable("Current stack trace"), () -> "Current stack trace");
+        }
+
+        OfflinePlayer player;
+
+        try {
+            UUID uuid = UUID.fromString(name);
+            player = Bukkit.getOfflinePlayer(uuid);
+            // Ensure player is a real player, otherwise return null
+            if (player.hasPlayedBefore() || player.isOnline()) {
+                return player;
+            }
+        } catch (IllegalArgumentException ignored) {
+            // Not a UUID
+        }
+
+        player = Bukkit.getServer().getPlayerExact(name);
+
+        if (player != null) {
+            return player;
+        }
+
+        player = Bukkit.getServer().getOfflinePlayer(name);
+
+        if (player.hasPlayedBefore()) {
+            return player;
+        }
+
+        player = Bukkit.getServer().getPlayer(name);
+
+        if (player != null) {
+            return player;
+        }
+
+        float bestMatch = 0;
+        for (OfflinePlayer offline : Bukkit.getServer().getOfflinePlayers()) {
+            if (offline.getName() == null) {
+                // Loaded by UUID only, name has never been looked up.
+                continue;
+            }
+
+            float currentMatch = StringMetric.compareJaroWinkler(name, offline.getName());
+
+            if (currentMatch == 1.0F) {
+                return offline;
+            }
+
+            if (currentMatch > bestMatch) {
+                bestMatch = currentMatch;
+                player = offline;
+            }
+        }
+
+        // Only null if no players have played ever, otherwise even the worst match will do.
+        return player;
+    }
+
+    /**
+     * Open an ISpecialInventory for a Player.
+     *
+     * @param player the Player
+     * @param inventory the ISpecialInventory
+     * @return the InventoryView for the opened ISpecialInventory
+     */
+    @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory);
+
+    /**
+     * Check the configuration value for whether or not OpenInv displays a notification to the user
+     * when a container is activated with AnyChest.
+     *
+     * @return true unless configured otherwise
+     * @deprecated OpenInv uses action bar chat for notifications. Whether or not they show is based on language settings.
+     */
+    @Deprecated
+    default boolean notifyAnyChest() {
+        return true;
+    }
+
+    /**
+     * Check the configuration value for whether or not OpenInv displays a notification to the user
+     * when a container is activated with SilentChest.
+     *
+     * @return true unless configured otherwise
+     * @deprecated OpenInv uses action bar chat for notifications. Whether or not they show is based on language settings.
+     */
+    @Deprecated
+    default boolean notifySilentChest() {
+        return true;
+    }
+
+    /**
+     * Mark a Player as no longer in use by a Plugin to allow OpenInv to remove it from the cache
+     * when eligible.
+     *
+     * @param player the Player
+     * @param plugin the Plugin no longer holding a reference to the Player
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void releasePlayer(@NotNull Player player, @NotNull Plugin plugin);
+
+    /**
+     * Mark a Player as in use by a Plugin to prevent it from being removed from the cache. Used to
+     * prevent issues with multiple copies of the same Player being loaded such as lishid#49.
+     * Changes made to loaded copies overwrite changes to the others when saved, leading to
+     * duplication bugs and more.
+     * <p>
+     * When finished with the Player object, be sure to call {@link #releasePlayer(Player, Plugin)}
+     * to prevent the cache from keeping it stored until the plugin is disabled.
+     * <p>
+     * When using a Player object from OpenInv, you must handle the Player coming online, replacing
+     * your Player reference with the Player from the PlayerJoinEvent. In addition, you must change
+     * any values in the Player to reflect any unsaved alterations to the existing Player which do
+     * not affect the inventory or ender chest contents.
+     * <p>
+     * OpenInv only saves player data when unloading a Player from the cache, and then only if
+     * {@link #disableSaving()} returns false. If you are making changes that OpenInv does not cause
+     * to persist when a Player logs in as noted above, it is suggested that you manually call
+     * {@link Player#saveData()} when releasing your reference to ensure your changes persist.
+     *
+     * @param player the Player
+     * @param plugin the Plugin holding the reference to the Player
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void retainPlayer(@NotNull Player player, @NotNull Plugin plugin);
+
+    /**
+     * Sets a player's AnyChest setting.
+     *
+     * @param offline the OfflinePlayer
+     * @param status the status
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void setPlayerAnyChestStatus(@NotNull OfflinePlayer offline, boolean status);
+
+    /**
+     * Sets a player's SilentChest setting.
+     *
+     * @param offline the OfflinePlayer
+     * @param status the status
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void setPlayerSilentChestStatus(@NotNull OfflinePlayer offline, boolean status);
+
+    /**
+     * Forcibly unload a cached Player's data.
+     *
+     * @param offline the OfflinePlayer to unload
+     * @throws IllegalStateException if the server version is unsupported
+     */
+    void unload(@NotNull OfflinePlayer offline);
+
+    Logger getLogger();
+
+}

api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java

@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+import org.bukkit.Material;
+import org.bukkit.block.Barrel;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockFace;
+import org.bukkit.block.BlockState;
+import org.bukkit.block.EnderChest;
+import org.bukkit.block.ShulkerBox;
+import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.type.Chest;
+import org.bukkit.entity.Cat;
+import org.bukkit.entity.Player;
+import org.bukkit.util.BoundingBox;
+import org.jetbrains.annotations.NotNull;
+
+public interface IAnySilentContainer {
+
+    /**
+     * Opens the container at the given coordinates for the Player. If you do not want blocked
+     * containers to open, be sure to check {@link #isAnyContainerNeeded(Player, Block)}
+     * first.
+     *
+     * @param player    the Player opening the container
+     * @param silent    whether the container's noise is to be silenced
+     * @param block     the Block
+     * @return true if the container can be opened
+     */
+    boolean activateContainer(@NotNull Player player, boolean silent, @NotNull Block block);
+
+    /**
+     * Closes the Player's currently open container silently, if necessary.
+     *
+     * @param player the Player closing a container
+     */
+    void deactivateContainer(@NotNull Player player);
+
+    /**
+     * @deprecated use {@link #isAnyContainerNeeded(Block)}
+     * @param player the player opening the container
+     * @param block the block
+     * @return true if the container is blocked
+     */
+    @Deprecated
+    default boolean isAnyContainerNeeded(@NotNull Player player, @NotNull Block block) {
+        return isAnyContainerNeeded(block);
+    }
+
+    /**
+     * Checks if the container at the given coordinates is blocked.
+     *
+     * @param block  the Block
+     * @return true if the container is blocked
+     */
+    default boolean isAnyContainerNeeded(@NotNull Block block) {
+        BlockState blockState = block.getState();
+
+        // Barrels do not require AnyContainer.
+        if (blockState instanceof Barrel) {
+            return false;
+        }
+
+        // Enderchests require a non-occluding block on top to open.
+        if (blockState instanceof EnderChest) {
+            return block.getRelative(0, 1, 0).getType().isOccluding();
+        }
+
+        // Shulker boxes require 1/2 a block clear in the direction they open.
+        if (blockState instanceof ShulkerBox) {
+            if (isShulkerBlocked((ShulkerBox) blockState)) {
+                return true;
+            }
+        }
+
+        if (!(blockState instanceof org.bukkit.block.Chest)) {
+            return false;
+        }
+
+        if (isChestBlocked(block)) {
+            return true;
+        }
+
+        BlockData blockData = block.getBlockData();
+        if (!(blockData instanceof Chest) || ((Chest) blockData).getType() == Chest.Type.SINGLE) {
+            return false;
+        }
+
+        Chest chest = (Chest) blockData;
+        int ordinal = (chest.getFacing().ordinal() + 4 + (chest.getType() == Chest.Type.RIGHT ? -1 : 1)) % 4;
+        BlockFace relativeFace = BlockFace.values()[ordinal];
+        org.bukkit.block.Block relative = block.getRelative(relativeFace);
+
+        if (relative.getType() != block.getType()) {
+            return false;
+        }
+
+        BlockData relativeData = relative.getBlockData();
+        if (!(relativeData instanceof Chest)) {
+            return false;
+        }
+
+        Chest relativeChest = (Chest) relativeData;
+        if (relativeChest.getFacing() != chest.getFacing()
+                || relativeChest.getType() != (chest.getType() == Chest.Type.RIGHT ? Chest.Type.LEFT : Chest.Type.RIGHT)) {
+            return false;
+        }
+
+        return isChestBlocked(relative);
+    }
+
+    boolean isShulkerBlocked(ShulkerBox block);
+
+    /**
+     * Determine whether or not a chest is blocked.
+     *
+     * @param chest the chest block
+     * @return true if the chest block cannot be opened under ordinary circumstances
+     */
+    default boolean isChestBlocked(Block chest) {
+        org.bukkit.block.Block relative = chest.getRelative(0, 1, 0);
+        return relative.getType().isOccluding()
+                || chest.getWorld().getNearbyEntities(BoundingBox.of(relative), entity -> entity instanceof Cat).size() > 0;
+    }
+
+    /**
+     * Checks if the given block is a container which can be unblocked or silenced.
+     *
+     * @param block the BlockState
+     * @return true if the Block is a supported container
+     */
+    default boolean isAnySilentContainer(@NotNull Block block) {
+        if (block.getType() == Material.ENDER_CHEST) {
+            return true;
+        }
+        BlockState state = block.getState();
+        return state instanceof org.bukkit.block.Chest
+                || state instanceof org.bukkit.block.ShulkerBox
+                || state instanceof org.bukkit.block.Barrel;
+    }
+
+}

api/src/main/java/com/lishid/openinv/internal/IInventoryAccess.java

@@ -1,15 +1,15 @@
 /*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
+ * the Free Software Foundation, version 3.
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
@@ -17,41 +17,48 @@
 package com.lishid.openinv.internal;
 
 import org.bukkit.inventory.Inventory;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
+@Deprecated
 public interface IInventoryAccess {
 
-    /**
-     * Check if an Inventory is an ISpecialPlayerInventory implementation.
-     * 
-     * @param inventory the Inventory
-     * @return true if the Inventory is backed by an ISpecialPlayerInventory
-     */
-    public boolean isSpecialPlayerInventory(Inventory inventory);
-
-    /**
-     * Gets an ISpecialPlayerInventory from an Inventory or null if the Inventory is not backed by
-     * an ISpecialPlayerInventory.
-     * 
-     * @param inventory the Inventory
-     * @return the ISpecialPlayerInventory or null
-     */
-    public ISpecialPlayerInventory getSpecialPlayerInventory(Inventory inventory);
-
-    /**
-     * Check if an Inventory is an ISpecialEnderChest implementation.
-     * 
-     * @param inventory the Inventory
-     * @return true if the Inventory is backed by an ISpecialEnderChest
-     */
-    public boolean isSpecialEnderChest(Inventory inventory);
-
     /**
      * Gets an ISpecialEnderChest from an Inventory or null if the Inventory is not backed by an
      * ISpecialEnderChest.
-     * 
+     *
      * @param inventory the Inventory
      * @return the ISpecialEnderChest or null
      */
-    public ISpecialEnderChest getSpecialEnderChest(Inventory inventory);
+    @Deprecated
+    @Nullable ISpecialEnderChest getSpecialEnderChest(@NotNull Inventory inventory);
+
+    /**
+     * Gets an ISpecialPlayerInventory from an Inventory or null if the Inventory is not backed by
+     * an ISpecialPlayerInventory.
+     *
+     * @param inventory the Inventory
+     * @return the ISpecialPlayerInventory or null
+     */
+    @Deprecated
+    @Nullable ISpecialPlayerInventory getSpecialPlayerInventory(@NotNull Inventory inventory);
+
+    /**
+     * Check if an Inventory is an ISpecialEnderChest implementation.
+     *
+     * @param inventory the Inventory
+     * @return true if the Inventory is backed by an ISpecialEnderChest
+     */
+    @Deprecated
+    boolean isSpecialEnderChest(@NotNull Inventory inventory);
+
+    /**
+     * Check if an Inventory is an ISpecialPlayerInventory implementation.
+     *
+     * @param inventory the Inventory
+     * @return true if the Inventory is backed by an ISpecialPlayerInventory
+     */
+    @Deprecated
+    boolean isSpecialPlayerInventory(@NotNull Inventory inventory);
 
 }

api/src/main/java/com/lishid/openinv/internal/ISpecialEnderChest.java

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+public interface ISpecialEnderChest extends ISpecialInventory {
+
+}

api/src/main/java/com/lishid/openinv/internal/ISpecialInventory.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.Inventory;
+import org.jetbrains.annotations.NotNull;
+
+public interface ISpecialInventory {
+
+    /**
+     * Gets the Inventory associated with this ISpecialInventory.
+     *
+     * @return the Inventory
+     */
+    @NotNull Inventory getBukkitInventory();
+
+    /**
+     * Sets the Player associated with this ISpecialInventory online.
+     *
+     * @param player the Player coming online
+     */
+    void setPlayerOnline(@NotNull Player player);
+
+    /**
+     * Sets the Player associated with this ISpecialInventory offline.
+     */
+    void setPlayerOffline();
+
+    /**
+     * Gets whether or not this ISpecialInventory is in use.
+     *
+     * @return true if the ISpecialInventory is in use
+     */
+    boolean isInUse();
+
+    /**
+     * Gets the Player associated with this ISpecialInventory.
+     *
+     * @return the HumanEntity
+     */
+    @NotNull HumanEntity getPlayer();
+
+}

api/src/main/java/com/lishid/openinv/internal/ISpecialPlayerInventory.java

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+public interface ISpecialPlayerInventory extends ISpecialInventory {
+
+}

api/src/main/java/com/lishid/openinv/util/InventoryAccess.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import com.lishid.openinv.internal.IInventoryAccess;
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.lang.reflect.Method;
+import org.bukkit.Bukkit;
+import org.bukkit.inventory.Inventory;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class InventoryAccess implements IInventoryAccess {
+
+    private static Class<?> craftInventory = null;
+    private static Method getInventory = null;
+
+    static {
+        String packageName = Bukkit.getServer().getClass().getPackage().getName();
+        try {
+            craftInventory = Class.forName(packageName + ".inventory.CraftInventory");
+        } catch (ClassNotFoundException ignored) {}
+        try {
+            getInventory = craftInventory.getDeclaredMethod("getInventory");
+        } catch (NoSuchMethodException ignored) {}
+    }
+
+    /**
+     * @deprecated use {@link #isUsable()}
+     */
+    @Deprecated
+    public static boolean isUseable() {
+        return isUsable();
+    }
+
+    public static boolean isUsable() {
+        return craftInventory != null && getInventory != null;
+    }
+
+    public static boolean isPlayerInventory(@NotNull Inventory inventory) {
+        return getPlayerInventory(inventory) != null;
+    }
+
+    public static @Nullable ISpecialPlayerInventory getPlayerInventory(@NotNull Inventory inventory) {
+        return getSpecialInventory(ISpecialPlayerInventory.class, inventory);
+    }
+
+    public static boolean isEnderChest(@NotNull Inventory inventory) {
+        return getEnderChest(inventory) != null;
+    }
+
+    public static @Nullable ISpecialEnderChest getEnderChest(@NotNull Inventory inventory) {
+        return getSpecialInventory(ISpecialEnderChest.class, inventory);
+    }
+
+    private static <T extends ISpecialInventory> @Nullable T getSpecialInventory(@NotNull Class<T> expected, @NotNull Inventory inventory) {
+        Object inv;
+        if (craftInventory != null && getInventory != null && craftInventory.isAssignableFrom(inventory.getClass())) {
+            try {
+                inv = getInventory.invoke(inventory);
+                if (expected.isInstance(inv)) {
+                    return expected.cast(inv);
+                }
+            } catch (ReflectiveOperationException ignored) {}
+        }
+
+        // Use reflection to find the IInventory
+        inv = ReflectionHelper.grabObjectByType(inventory, expected);
+
+        if (expected.isInstance(inv)) {
+            return expected.cast(inv);
+        }
+
+        return null;
+    }
+
+    @Deprecated
+    @Override
+    public @Nullable ISpecialEnderChest getSpecialEnderChest(@NotNull Inventory inventory) {
+        return getEnderChest(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public @Nullable ISpecialPlayerInventory getSpecialPlayerInventory(@NotNull Inventory inventory) {
+        return getPlayerInventory(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public boolean isSpecialEnderChest(@NotNull Inventory inventory) {
+        return isEnderChest(inventory);
+    }
+
+    @Deprecated
+    @Override
+    public boolean isSpecialPlayerInventory(@NotNull Inventory inventory) {
+        return isPlayerInventory(inventory);
+    }
+
+}

api/src/main/java/com/lishid/openinv/util/ReflectionHelper.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import java.lang.reflect.Field;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A utility for making reflection easier.
+ */
+public final class ReflectionHelper {
+
+    private ReflectionHelper() {}
+
+    /**
+     * Grab an {@link Object} stored in a {@link Field} of another {@code Object}.
+     *
+     * <p>This casts the field to the correct class. Any issues will result in a {@code null} return value.
+     *
+     * @param fieldType the {@link Class} of {@code Object} stored in the {@code Field}
+     * @param holder the containing {@code Object}
+     * @param <T> the type of stored {@code Object}
+     * @return the first matching {@code Object} or {@code null} if none match
+     */
+    public static <T> @Nullable T grabObjectByType(final Object holder, final Class<T> fieldType) {
+        Field field = grabFieldByType(holder.getClass(), fieldType);
+
+        if (field != null) {
+            try {
+                return fieldType.cast(field.get(holder));
+            } catch (IllegalAccessException ignored) {
+                // Ignore issues obtaining field
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Grab a {@link Field} of an {@link Object}
+     *
+     * @param fieldType the {@link Class} of the object
+     * @param holderType the containing {@code Class}
+     * @return the first matching object or {@code null} if none match
+     */
+    public static @Nullable Field grabFieldByType(Class<?> holderType, Class<?> fieldType) {
+        for (Field field : holderType.getDeclaredFields()) {
+            field.setAccessible(true);
+            if (fieldType.isAssignableFrom(field.getType())) {
+                return field;
+            }
+        }
+
+        if (holderType.getSuperclass() != null) {
+            return grabFieldByType(fieldType, holderType.getSuperclass());
+        }
+
+        return null;
+    }
+
+}

api/src/main/java/com/lishid/openinv/util/StringMetric.java

@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+public class StringMetric {
+
+    public static float compareJaroWinkler(String a, String b) {
+        final float jaroScore = compareJaro(a, b);
+
+        if (jaroScore < (float) 0.7) {
+            return jaroScore;
+        }
+
+        String prefix = commonPrefix(a, b);
+        int prefixLength = Math.min(prefix.codePointCount(0, prefix.length()), 4);
+
+        return jaroScore + (prefixLength * (float) 0.1 * (1.0f - jaroScore));
+
+    }
+
+    private static float compareJaro(String a, String b) {
+        if (a.isEmpty() && b.isEmpty()) {
+            return 1.0f;
+        }
+
+        if (a.isEmpty() || b.isEmpty()) {
+            return 0.0f;
+        }
+
+        final int[] charsA = a.codePoints().toArray();
+        final int[] charsB = b.codePoints().toArray();
+
+        // Intentional integer division to round down.
+        final int halfLength = Math.max(0, Math.max(charsA.length, charsB.length) / 2 - 1);
+
+        final int[] commonA = getCommonCodePoints(charsA, charsB, halfLength);
+        final int[] commonB = getCommonCodePoints(charsB, charsA, halfLength);
+
+        // commonA and commonB will always contain the same multi-set of
+        // characters. Because getCommonCharacters has been optimized, commonA
+        // and commonB are -1-padded. So in this loop we count transposition
+        // and use commonCharacters to determine the length of the multi-set.
+        float transpositions = 0;
+        int commonCharacters = 0;
+        for (int length = commonA.length; commonCharacters < length
+                && commonA[commonCharacters] > -1; commonCharacters++) {
+            if (commonA[commonCharacters] != commonB[commonCharacters]) {
+                transpositions++;
+            }
+        }
+
+        if (commonCharacters == 0) {
+            return 0.0f;
+        }
+
+        float aCommonRatio = commonCharacters / (float) charsA.length;
+        float bCommonRatio = commonCharacters / (float) charsB.length;
+        float transpositionRatio = (commonCharacters - transpositions / 2.0f) / commonCharacters;
+
+        return (aCommonRatio + bCommonRatio + transpositionRatio) / 3.0f;
+    }
+
+    /*
+     * Returns an array of code points from a within b. A character in b is
+     * counted as common when it is within separation distance from the position
+     * in a.
+     */
+    private static int[] getCommonCodePoints(final int[] charsA, final int[] charsB, final int separation) {
+        final int[] common = new int[Math.min(charsA.length, charsB.length)];
+        final boolean[] matched = new boolean[charsB.length];
+
+        // Iterate of string a and find all characters that occur in b within
+        // the separation distance. Mark any matches found to avoid
+        // duplicate matchings.
+        int commonIndex = 0;
+        for (int i = 0, length = charsA.length; i < length; i++) {
+            final int character = charsA[i];
+            final int index = indexOf(character, charsB, i - separation, i
+                    + separation + 1, matched);
+            if (index > -1) {
+                common[commonIndex++] = character;
+                matched[index] = true;
+            }
+        }
+
+        if (commonIndex < common.length) {
+            common[commonIndex] = -1;
+        }
+
+        // Both invocations will yield the same multi-set terminated by -1, so
+        // they can be compared for transposition without making a copy.
+        return common;
+    }
+
+    /*
+     * Search for code point in buffer starting at fromIndex to toIndex - 1.
+     *
+     * Returns -1 when not found.
+     */
+    private static int indexOf(int character, int[] buffer, int fromIndex, int toIndex, boolean[] matched) {
+
+        // compare char with range of characters to either side
+        for (int j = Math.max(0, fromIndex), length = Math.min(toIndex, buffer.length); j < length; j++) {
+            // check if found
+            if (buffer[j] == character && !matched[j]) {
+                return j;
+            }
+        }
+
+        return -1;
+    }
+
+    private static String commonPrefix(CharSequence a, CharSequence b) {
+        int maxPrefixLength = Math.min(a.length(), b.length());
+
+        int p;
+
+        p = 0;
+        while (p < maxPrefixLength && a.charAt(p) == b.charAt(p)) {
+            ++p;
+        }
+
+        if (validSurrogatePairAt(a, p - 1) || validSurrogatePairAt(b, p - 1)) {
+            --p;
+        }
+
+        return a.subSequence(0, p).toString();
+    }
+
+    private static boolean validSurrogatePairAt(CharSequence string, int index) {
+        return index >= 0 && index <= string.length() - 2 && Character.isHighSurrogate(string.charAt(index)) && Character.isLowSurrogate(string.charAt(index + 1));
+    }
+
+    private StringMetric(){}
+
+}

assembly/pom.xml

@@ -1,172 +1,32 @@
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
     <groupId>com.lishid</groupId>
-    <artifactId>openinv</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <artifactId>openinvparent</artifactId>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
   <artifactId>openinvassembly</artifactId>
   <name>OpenInvAssembly</name>
-
-  <profiles>
-
-    <profile>
-      <id>latest</id>
-      <dependencies>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_11_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-      </dependencies>
-    </profile>
-
-    <profile>
-      <id>modern</id>
-      <dependencies>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R3</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_9_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_9_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_10_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_11_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-      </dependencies>
-    </profile>
-
-    <profile>
-      <id>all</id>
-      <dependencies>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_4_5</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_4_6</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_4_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_5_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_5_R3</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_6_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_6_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_6_R3</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_7_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_7_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_7_R3</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_7_R4</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_8_R3</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_9_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_9_R2</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_10_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-        <dependency>
-          <groupId>com.lishid</groupId>
-          <artifactId>openinvadapter1_11_R1</artifactId>
-          <version>1.0-SNAPSHOT</version>
-        </dependency>
-      </dependencies>
-    </profile>
-
-  </profiles>
+  <packaging>pom</packaging>
 
   <build>
     <directory>../target</directory>
@@ -174,35 +34,25 @@
 
     <plugins>
       <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-shade-plugin</artifactId>
-        <version>2.4.3</version>
-        <configuration>
-          <!--
-            ~ This keeps the final file clean, but may cause issues for people not familiar with the setup.
-            ~ If you're having trouble with the final product missing files, remove or tweak this configuration.
-           -->
-          <minimizeJar>true</minimizeJar>
-          <filters>
-            <filter>
-              <artifact>com.lishid:*</artifact>
-              <includes>
-                <include>com/lishid/openinv/**/*</include>
-                <include>plugin.yml</include>
-              </includes>
-            </filter>
-          </filters>
-        </configuration>
+        <artifactId>maven-assembly-plugin</artifactId>
         <executions>
           <execution>
+            <id>reactor-uberjar</id>
             <phase>package</phase>
             <goals>
-              <goal>shade</goal>
+              <goal>single</goal>
             </goals>
+            <configuration>
+              <appendAssemblyId>false</appendAssemblyId>
+              <descriptors>
+                <descriptor>src/assembly/reactor-uberjar.xml</descriptor>
+              </descriptors>
+            </configuration>
           </execution>
         </executions>
       </plugin>
     </plugins>
+
   </build>
 
-</project>
+</project>

assembly/src/assembly/reactor-uberjar.xml

@@ -0,0 +1,54 @@
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<assembly xmlns="http://maven.apache.org/ASSEMBLY/2.1.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.1.0 http://maven.apache.org/xsd/assembly-2.1.0.xsd">
+
+  <id>reactor-uberjar</id>
+
+  <formats>
+    <format>jar</format>
+  </formats>
+
+  <includeBaseDirectory>false</includeBaseDirectory>
+
+  <moduleSets>
+    <moduleSet>
+
+      <useAllReactorProjects>true</useAllReactorProjects>
+
+      <binaries>
+        <outputDirectory>/</outputDirectory>
+        <unpack>true</unpack>
+        <unpackOptions>
+          <excludes>
+            <!--
+              - Exclude existing meta - assembly will write its own manifest, and the rest is maven
+              - details that end users don't need. Ignoring it saves around 7KB after compression
+              - with a single internal module present.
+             -->
+            <exclude>META-INF/**</exclude>
+          </excludes>
+        </unpackOptions>
+        <!-- Exclude dependencies - shade plugin will handle their inclusion as necessary in individual jars. -->
+        <includeDependencies>false</includeDependencies>
+      </binaries>
+
+    </moduleSet>
+  </moduleSets>
+
+</assembly>

internal/pom.xml

@@ -1,23 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  <modelVersion>4.0.0</modelVersion>
-
-  <parent>
-    <groupId>com.lishid</groupId>
-    <artifactId>openinv</artifactId>
-    <version>1.0-SNAPSHOT</version>
-  </parent>
-
-  <artifactId>openinvinternal</artifactId>
-  <name>OpenInvInternal</name>
-
-  <dependencies>
-    <dependency>
-      <groupId>org.bukkit</groupId>
-      <artifactId>bukkit</artifactId>
-      <version>1.4.5-R1.0</version>
-      <scope>provided</scope>
-    </dependency>
-  </dependencies>
-
-</project>

internal/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java

@@ -1,37 +0,0 @@
-package com.lishid.openinv.internal;
-
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
-
-public interface IAnySilentContainer {
-
-    /**
-     * Checks if the given block is a container which can be unblocked or silenced.
-     * 
-     * @param block the BlockState
-     * @return true if the Block is a supported container
-     */
-    public boolean isAnySilentContainer(Block block);
-
-    /**
-     * Checks if the container at the given coordinates is blocked.
-     * 
-     * @param player the Player opening the container
-     * @param block the Block
-     * @return true if the container is blocked
-     */
-    public boolean isAnyContainerNeeded(Player player, Block block);
-
-    /**
-     * Opens the container at the given coordinates for the Player. If you do not want blocked
-     * containers to open, be sure to check {@link #isAnyContainerNeeded(Player, Block)}
-     * first.
-     * 
-     * @param player
-     * @param silentchest whether the container's noise is to be silenced
-     * @param block the Block
-     * @return true if the container can be opened
-     */
-    public boolean activateContainer(Player player, boolean silentchest, Block block);
-
-}

internal/src/main/java/com/lishid/openinv/internal/IPlayerDataManager.java

@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal;
-
-import org.bukkit.OfflinePlayer;
-import org.bukkit.entity.Player;
-
-public interface IPlayerDataManager {
-
-    /**
-     * Loads a Player for an OfflinePlayer.
-     * </p>
-     * This method is potentially blocking, and should not be called on the main thread.
-     * 
-     * @param offline
-     * @return
-     */
-    public Player loadPlayer(OfflinePlayer offline);
-
-    /**
-     * Gets a unique identifying string for an OfflinePlayer.
-     * 
-     * @param player
-     * @return
-     */
-    public String getPlayerDataID(OfflinePlayer player);
-
-}

internal/src/main/java/com/lishid/openinv/internal/ISpecialEnderChest.java

@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal;
-
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-
-public interface ISpecialEnderChest {
-
-    /**
-     * Gets the Inventory associated with this ISpecialEnderChest.
-     * 
-     * @return the Inventory
-     */
-    public Inventory getBukkitInventory();
-
-    /**
-     * Sets the Player associated with this ISpecialEnderChest online.
-     * 
-     * @param player the Player coming online
-     */
-    public void setPlayerOnline(Player player);
-
-    /**
-     * Sets the Player associated with this ISpecialEnderChest offline.
-     */
-    public void setPlayerOffline();
-
-    /**
-     * Gets whether or not this ISpecialEnderChest is in use.
-     * 
-     * @return true if the ISpecialEnderChest is in use
-     */
-    public boolean isInUse();
-
-}

internal/src/main/java/com/lishid/openinv/internal/ISpecialPlayerInventory.java

@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal;
-
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-
-public interface ISpecialPlayerInventory {
-
-    /**
-     * Gets the Inventory associated with this ISpecialPlayerInventory.
-     * 
-     * @return the Inventory
-     */
-    public Inventory getBukkitInventory();
-
-    /**
-     * Sets the Player associated with this ISpecialPlayerInventory online.
-     * 
-     * @param player the Player coming online
-     */
-    public void setPlayerOnline(Player player);
-
-    /**
-     * Sets the Player associated with this ISpecialPlayerInventory offline.
-     */
-    public void setPlayerOffline();
-
-    /**
-     * Gets whether or not this ISpecialPlayerInventory is in use.
-     * 
-     * @return true if the ISpecialPlayerInventory is in use
-     */
-    public boolean isInUse();
-
-}

internal/src/main/java/com/lishid/openinv/internal/InternalAccessor.java

@@ -1,180 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.internal;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
-
-public class InternalAccessor {
-
-    private final Plugin plugin;
-
-    private final String version;
-    private boolean supported = false;
-
-    public InternalAccessor(Plugin plugin) {
-        this.plugin = plugin;
-
-        String packageName = plugin.getServer().getClass().getPackage().getName();
-        version = packageName.substring(packageName.lastIndexOf('.') + 1);
-
-        try {
-            Class.forName("com.lishid.openinv.internal." + version + ".PlayerDataManager");
-            supported = true;
-        } catch (Exception e) {}
-    }
-
-    /**
-     * Gets the server implementation version. If not initialized, returns the string "null"
-     * instead.
-     * 
-     * @return the version, or "null"
-     */
-    public String getVersion() {
-        return this.version != null ? this.version : "null";
-    }
-
-    /**
-     * Checks if the server implementation is supported.
-     * 
-     * @return true if initialized for a supported server version
-     */
-    public boolean isSupported() {
-        return this.supported;
-    }
-
-    /**
-     * Creates an instance of the IPlayerDataManager implementation for the current server version,
-     * or null if unsupported.
-     * 
-     * @return the IPlayerDataManager
-     */
-    public IPlayerDataManager newPlayerDataManager() {
-        return createObject(IPlayerDataManager.class, "PlayerDataManager");
-    }
-
-    /**
-     * Creates an instance of the IInventoryAccess implementation for the current server version, or
-     * null if unsupported.
-     * 
-     * @return the IInventoryAccess
-     */
-    public IInventoryAccess newInventoryAccess() {
-        return createObject(IInventoryAccess.class, "InventoryAccess");
-    }
-
-    /**
-     * Creates an instance of the IAnySilentContainer implementation for the current server version,
-     * or null if unsupported.
-     * 
-     * @return the IAnySilentContainer
-     */
-    public IAnySilentContainer newAnySilentContainer() {
-        return createObject(IAnySilentContainer.class, "AnySilentContainer");
-    }
-
-    /**
-     * Creates an instance of the ISpecialPlayerInventory implementation for the given Player, or
-     * null if the current version is unsupported.
-     * 
-     * @param player the Player
-     * @param online true if the Player is online
-     * @return the ISpecialPlayerInventory created
-     */
-    public ISpecialPlayerInventory newSpecialPlayerInventory(Player player, boolean online) {
-        return createObject(ISpecialPlayerInventory.class, "SpecialPlayerInventory", player, online);
-    }
-
-    /**
-     * Creates an instance of the ISpecialEnderChest implementation for the given Player, or
-     * null if the current version is unsupported.
-     * 
-     * @param player the Player
-     * @param online true if the Player is online
-     * @return the ISpecialEnderChest created
-     */
-    public ISpecialEnderChest newSpecialEnderChest(Player player, boolean online) {
-        return createObject(ISpecialEnderChest.class, "SpecialEnderChest", player, online);
-    }
-
-    private <T> T createObject(Class<? extends T> assignableClass, String className, Object... params) {
-        try {
-            // Check if internal versioned class exists
-            Class<?> internalClass = Class.forName("com.lishid.openinv.internal." + version + "." + className);
-            if (!assignableClass.isAssignableFrom(internalClass)) {
-                plugin.getLogger().warning("Found class " + internalClass.getName() + " but cannot cast to " + assignableClass.getName());
-                return null;
-            }
-
-            // Quick return: no parameters, no need to fiddle about finding the correct constructor.
-            if (params.length == 0) {
-                return assignableClass.cast(internalClass.getConstructor().newInstance());
-            }
-
-            // Search constructors for one matching the given parameters
-            nextConstructor: for (Constructor<?> constructor : internalClass.getConstructors()) {
-                Class<?>[] requiredClasses = constructor.getParameterTypes();
-                if (requiredClasses.length != params.length) {
-                    continue;
-                }
-                for (int i = 0; i < params.length; ++i) {
-                    if (!requiredClasses[i].isAssignableFrom(params[i].getClass())) {
-                        continue nextConstructor;
-                    }
-                }
-                return assignableClass.cast(constructor.newInstance(params));
-            }
-
-            StringBuilder message = new StringBuilder("Found class ").append(internalClass.getName())
-                    .append(" but cannot find any matching constructors for [");
-            for (Object object : params) {
-                message.append(object.getClass().getName()).append(", ");
-            }
-            if (params.length > 0) {
-                message.delete(message.length() - 2, message.length());
-            }
-
-            plugin.getLogger().warning(message.append(']').toString());
-        } catch (Exception e) {
-            plugin.getLogger().warning("OpenInv encountered an error with the CraftBukkit version \"" + version + "\". Please look for an updated version of OpenInv.");
-            e.printStackTrace();
-        }
-
-        return null;
-    }
-
-    public static <T> T grabFieldOfTypeFromObject(Class<T> type, Object object) {
-        // Use reflection to find the iinventory
-        Class<?> clazz = object.getClass();
-        T result = null;
-        for (Field f : clazz.getDeclaredFields()) {
-            f.setAccessible(true);
-            if (type.isAssignableFrom(f.getDeclaringClass())) {
-                try {
-                    result = type.cast(f.get(object));
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return result;
-    }
-
-}

internal/v1_17_R1/pom.xml

@@ -0,0 +1,105 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <artifactId>openinvparent</artifactId>
+    <groupId>com.lishid</groupId>
+    <relativePath>../../pom.xml</relativePath>
+    <version>4.1.9-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>openinvadapter1_17_R1</artifactId>
+  <name>OpenInvAdapter1_17_R1</name>
+
+  <properties>
+    <maven.compiler.source>16</maven.compiler.source>
+    <maven.compiler.target>16</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <artifactId>spigot</artifactId>
+      <groupId>org.spigotmc</groupId>
+      <scope>provided</scope>
+      <version>1.17.1-R0.1-SNAPSHOT</version>
+      <classifier>remapped-mojang</classifier>
+    </dependency>
+    <dependency>
+      <artifactId>openinvapi</artifactId>
+      <groupId>com.lishid</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>openinvplugincore</artifactId>
+      <groupId>com.lishid</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>annotations</artifactId>
+      <groupId>org.jetbrains</groupId>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-shade-plugin</artifactId>
+        <configuration>
+          <minimizeJar>true</minimizeJar>
+        </configuration>
+      </plugin>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>net.md-5</groupId>
+        <artifactId>specialsource-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>remap</goal>
+            </goals>
+            <id>remap-obf</id>
+            <configuration>
+              <srgIn>org.spigotmc:minecraft-server:1.17.1-R0.1-SNAPSHOT:txt:maps-mojang</srgIn>
+              <reverse>true</reverse>
+              <remappedDependencies>org.spigotmc:spigot:1.17.1-R0.1-SNAPSHOT:jar:remapped-mojang</remappedDependencies>
+              <remappedArtifactAttached>true</remappedArtifactAttached>
+              <remappedClassifierName>remapped-obf</remappedClassifierName>
+            </configuration>
+          </execution>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>remap</goal>
+            </goals>
+            <id>remap-spigot</id>
+            <configuration>
+              <inputFile>${project.build.directory}/${project.artifactId}-${project.version}-remapped-obf.jar</inputFile>
+              <srgIn>org.spigotmc:minecraft-server:1.17.1-R0.1-SNAPSHOT:csrg:maps-spigot</srgIn>
+              <remappedDependencies>org.spigotmc:spigot:1.17.1-R0.1-SNAPSHOT:jar:remapped-obf</remappedDependencies>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java

@@ -0,0 +1,277 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IAnySilentContainer;
+import com.lishid.openinv.util.ReflectionHelper;
+import java.lang.reflect.Field;
+import java.util.Optional;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import net.minecraft.core.BlockPos;
+import net.minecraft.network.chat.TextComponent;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.ServerPlayerGameMode;
+import net.minecraft.world.CompoundContainer;
+import net.minecraft.world.MenuProvider;
+import net.minecraft.world.SimpleMenuProvider;
+import net.minecraft.world.entity.monster.Shulker;
+import net.minecraft.world.inventory.ChestMenu;
+import net.minecraft.world.inventory.MenuType;
+import net.minecraft.world.inventory.PlayerEnderChestContainer;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.block.BarrelBlock;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.ChestBlock;
+import net.minecraft.world.level.block.DoubleBlockCombiner;
+import net.minecraft.world.level.block.ShulkerBoxBlock;
+import net.minecraft.world.level.block.TrappedChestBlock;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.entity.ChestBlockEntity;
+import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
+import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
+import net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.phys.AABB;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.Statistic;
+import org.bukkit.block.ShulkerBox;
+import org.bukkit.craftbukkit.v1_17_R1.CraftWorld;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class AnySilentContainer implements IAnySilentContainer {
+
+    private @Nullable Field serverPlayerGameModeGameType;
+
+    public AnySilentContainer() {
+        try {
+            try {
+                // IDE warns about field not existing, but SpecialSource does not remap strings used in reflection.
+                // The warning is not suppressed as a reminder that it must manually be checked on updates.
+                this.serverPlayerGameModeGameType = ServerPlayerGameMode.class.getDeclaredField("b");
+                this.serverPlayerGameModeGameType.setAccessible(true);
+            } catch (NoSuchFieldException e) {
+                Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+                logger.warning("ServerPlayerGameMode#gameModeForPlayer's obfuscated name has changed!");
+                logger.warning("Please report this at https://github.com/Jikoo/OpenInv/issues");
+                logger.warning("Attempting to fall through using reflection. Please verify that SilentContainer does not fail.");
+                // N.B. gameModeForPlayer is (for now) declared before previousGameModeForPlayer so silent shouldn't break.
+                this.serverPlayerGameModeGameType = ReflectionHelper.grabFieldByType(ServerPlayerGameMode.class, GameType.class);
+            }
+        } catch (SecurityException e) {
+            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+            logger.warning("Unable to directly write player game mode! SilentContainer will fail.");
+            logger.log(Level.WARNING, "Error obtaining GameType field", e);
+        }
+    }
+
+    @Override
+    public boolean isShulkerBlocked(ShulkerBox box) {
+        org.bukkit.World bukkitWorld = box.getWorld();
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
+        }
+
+        if (!(bukkitWorld instanceof CraftWorld craftWorld)) {
+            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
+            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
+            return false;
+        }
+
+        final ServerLevel world = craftWorld.getHandle();
+        final BlockPos blockPosition = new BlockPos(box.getX(), box.getY(), box.getZ());
+        final BlockEntity tile = world.getBlockEntity(blockPosition);
+
+        if (!(tile instanceof ShulkerBoxBlockEntity shulkerBoxBlockEntity)
+                || shulkerBoxBlockEntity.getAnimationStatus() != ShulkerBoxBlockEntity.AnimationStatus.CLOSED) {
+            return false;
+        }
+
+        BlockState blockState = world.getBlockState(blockPosition);
+
+        // See net.minecraft.world.level.block.ShulkerBoxBlock#canOpen
+        AABB boundingBox = Shulker.getProgressDeltaAabb(blockState.getValue(ShulkerBoxBlock.FACING), 0.0F, 0.5F)
+                .move(blockPosition)
+                .deflate(1.0E-6D);
+        return !world.noCollision(boundingBox);
+    }
+
+    @Override
+    public boolean activateContainer(
+            @NotNull final Player bukkitPlayer,
+            final boolean silentchest,
+            @NotNull final org.bukkit.block.Block bukkitBlock) {
+
+        // Silent ender chest is API-only
+        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
+            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        final ServerLevel level = player.getLevel();
+        final BlockPos blockPos = new BlockPos(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        final BlockEntity blockEntity = level.getBlockEntity(blockPos);
+
+        if (blockEntity == null) {
+            return false;
+        }
+
+        if (blockEntity instanceof EnderChestBlockEntity enderChestTile) {
+            // Anychest ender chest. See net.minecraft.world.level.block.BlockEnderChest
+            PlayerEnderChestContainer enderChest = player.getEnderChestInventory();
+            enderChest.setActiveChest(enderChestTile);
+            player.openMenu(new SimpleMenuProvider((containerCounter, playerInventory, ignored) -> {
+                MenuType<?> containers = PlayerDataManager.getContainers(enderChest.getContainerSize());
+                int rows = enderChest.getContainerSize() / 9;
+                return new ChestMenu(containers, containerCounter, playerInventory, enderChest, rows);
+            }, new TextComponent("container.enderchest")));
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        if (!(blockEntity instanceof MenuProvider menuProvider)) {
+            return false;
+        }
+
+        BlockState blockState = level.getBlockState(blockPos);
+        Block block = blockState.getBlock();
+
+        if (block instanceof ChestBlock chestBlock) {
+
+            // boolean flag: check if chest is blocked
+            Optional<MenuProvider> menuOptional = chestBlock.combine(blockState, level, blockPos, false).apply(
+                    // Combiner is a copy of private ChestBlock.MENU_PROVIDER_COMBINER
+                    new DoubleBlockCombiner.Combiner<ChestBlockEntity, Optional<MenuProvider>>() {
+                        @Override
+                        public Optional<MenuProvider> acceptDouble(ChestBlockEntity localChest1, ChestBlockEntity localChest2) {
+                            CompoundContainer doubleChest = new CompoundContainer(localChest1, localChest2);
+                            return Optional.of(new ChestBlock.DoubleInventory(localChest1, localChest2, doubleChest));
+                        }
+
+                        @Override
+                        public Optional<MenuProvider> acceptSingle(ChestBlockEntity localChest) {
+                            return Optional.of(localChest);
+                        }
+
+                        @Override
+                        public Optional<MenuProvider> acceptNone() {
+                            return Optional.empty();
+                        }
+                    });
+
+            if (menuOptional.isEmpty()) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+
+            menuProvider = menuOptional.get();
+
+            if (block instanceof TrappedChestBlock) {
+                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
+            } else {
+                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
+            }
+        }
+
+        if (block instanceof ShulkerBoxBlock) {
+            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
+        }
+
+        if (block instanceof BarrelBlock) {
+            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
+        }
+
+        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
+        if (!silentchest || player.gameMode.getGameModeForPlayer() == GameType.SPECTATOR) {
+            player.openMenu(menuProvider);
+            return true;
+        }
+
+        // SilentChest requires access to setting players' game mode directly.
+        if (this.serverPlayerGameModeGameType == null) {
+            return false;
+        }
+
+        if (blockEntity instanceof RandomizableContainerBlockEntity lootable) {
+            if (lootable.lootTable != null) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+        }
+
+        GameType gameType = player.gameMode.getGameModeForPlayer();
+        this.forceGameType(player, GameType.SPECTATOR);
+        player.openMenu(menuProvider);
+        this.forceGameType(player, gameType);
+        return true;
+    }
+
+    @Override
+    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
+        if (this.serverPlayerGameModeGameType == null) {
+            return;
+        }
+
+        InventoryView view = bukkitPlayer.getOpenInventory();
+        switch (view.getType()) {
+            case CHEST:
+            case ENDER_CHEST:
+            case SHULKER_BOX:
+            case BARREL:
+                break;
+            default:
+                return;
+        }
+
+        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        // Force game mode change without informing plugins or players.
+        // Regular game mode set calls GameModeChangeEvent and is cancellable.
+        GameType gameType = player.gameMode.getGameModeForPlayer();
+        this.forceGameType(player, GameType.SPECTATOR);
+
+        // Close container - note that this is very different from ServerPlayer#closeContainer!
+        // Triggering event must not be re-called or we'll enter an infinite loop.
+        player.doCloseContainer();
+
+        // Revert forced game mode.
+        this.forceGameType(player, gameType);
+    }
+
+    private void forceGameType(final ServerPlayer player, final GameType gameMode) {
+        if (this.serverPlayerGameModeGameType == null) {
+            // No need to warn repeatedly, error on startup and lack of function should be enough.
+            return;
+        }
+        try {
+            this.serverPlayerGameModeGameType.setAccessible(true);
+            this.serverPlayerGameModeGameType.set(player.gameMode, gameMode);
+        } catch (IllegalArgumentException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/OpenPlayer.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import java.io.File;
+import net.minecraft.Util;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.NbtIo;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.level.storage.PlayerDataStorage;
+import org.apache.logging.log4j.LogManager;
+import org.bukkit.craftbukkit.v1_17_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer;
+
+public class OpenPlayer extends CraftPlayer {
+
+    public OpenPlayer(CraftServer server, ServerPlayer entity) {
+        super(server, entity);
+    }
+
+    @Override
+    public void loadData() {
+        // See CraftPlayer#loadData
+        CompoundTag loaded = this.server.getHandle().playerIo.load(this.getHandle());
+        if (loaded != null) {
+            readExtraData(loaded);
+        }
+    }
+
+    @Override
+    public void saveData() {
+        ServerPlayer player = this.getHandle();
+        // See net.minecraft.world.level.storage.PlayerDataStorage#save(EntityHuman)
+        try {
+            PlayerDataStorage worldNBTStorage = player.server.getPlayerList().playerIo;
+
+            CompoundTag playerData = player.saveWithoutId(new CompoundTag());
+            setExtraData(playerData);
+
+            if (!isOnline()) {
+                // Special case: save old vehicle data
+                CompoundTag oldData = worldNBTStorage.load(player);
+
+                if (oldData != null && oldData.contains("RootVehicle", 10)) {
+                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
+                    playerData.put("RootVehicle", oldData.getCompound("RootVehicle"));
+                }
+            }
+
+            File file = File.createTempFile(player.getStringUUID() + "-", ".dat", worldNBTStorage.getPlayerDir());
+            NbtIo.writeCompressed(playerData, file);
+            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat");
+            File file2 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat_old");
+            Util.safeReplaceFile(file1, file, file2);
+        } catch (Exception e) {
+            LogManager.getLogger().warn("Failed to save player data for {}", player.getName().getString());
+        }
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/PlayerDataManager.java

@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IPlayerDataManager;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.internal.OpenInventoryView;
+import com.mojang.authlib.GameProfile;
+import java.lang.reflect.Field;
+import java.util.logging.Logger;
+import net.minecraft.network.chat.TextComponent;
+import net.minecraft.network.protocol.game.ClientboundOpenScreenPacket;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.world.inventory.MenuType;
+import net.minecraft.world.level.Level;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+import org.bukkit.craftbukkit.v1_17_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_17_R1.event.CraftEventFactory;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftContainer;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class PlayerDataManager implements IPlayerDataManager {
+
+    private @Nullable Field bukkitEntity;
+
+    public PlayerDataManager() {
+        try {
+            bukkitEntity = Entity.class.getDeclaredField("bukkitEntity");
+        } catch (NoSuchFieldException e) {
+            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+            logger.warning("Unable to obtain field to inject custom save process - players' mounts may be deleted when loaded.");
+            logger.log(java.util.logging.Level.WARNING, e.getMessage(), e);
+            bukkitEntity = null;
+        }
+    }
+
+    public static @NotNull ServerPlayer getHandle(final Player player) {
+        if (player instanceof CraftPlayer) {
+            return ((CraftPlayer) player).getHandle();
+        }
+
+        Server server = player.getServer();
+        ServerPlayer nmsPlayer = null;
+
+        if (server instanceof CraftServer) {
+            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getUniqueId());
+        }
+
+        if (nmsPlayer == null) {
+            // Could use reflection to examine fields, but it's honestly not worth the bother.
+            throw new RuntimeException("Unable to fetch EntityPlayer from provided Player implementation");
+        }
+
+        return nmsPlayer;
+    }
+
+    @Override
+    public @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline) {
+        // Ensure player has data
+        if (!offline.hasPlayedBefore()) {
+            return null;
+        }
+
+        // Create a profile and entity to load the player data
+        // See net.minecraft.server.PlayerList#attemptLogin
+        GameProfile profile = new GameProfile(offline.getUniqueId(),
+                offline.getName() != null ? offline.getName() : offline.getUniqueId().toString());
+        MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
+        ServerLevel worldServer = server.getLevel(Level.OVERWORLD);
+
+        if (worldServer == null) {
+            return null;
+        }
+
+        ServerPlayer entity = new ServerPlayer(server, worldServer, profile);
+
+        try {
+            injectPlayer(entity);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+        // Get the bukkit entity
+        Player target = entity.getBukkitEntity();
+        if (target != null) {
+            // Load data
+            target.loadData();
+        }
+        // Return the entity
+        return target;
+    }
+
+    void injectPlayer(ServerPlayer player) throws IllegalAccessException {
+        if (bukkitEntity == null) {
+            return;
+        }
+
+        bukkitEntity.setAccessible(true);
+
+        bukkitEntity.set(player, new OpenPlayer(player.server.server, player));
+    }
+
+    @NotNull
+    @Override
+    public Player inject(@NotNull Player player) {
+        try {
+            ServerPlayer nmsPlayer = getHandle(player);
+            injectPlayer(nmsPlayer);
+            return nmsPlayer.getBukkitEntity();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+            return player;
+        }
+    }
+
+    @Nullable
+    @Override
+    public InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
+
+        ServerPlayer nmsPlayer = getHandle(player);
+
+        if (nmsPlayer.connection == null) {
+            return null;
+        }
+
+        InventoryView view = getView(player, inventory);
+
+        if (view == null) {
+            return player.openInventory(inventory.getBukkitInventory());
+        }
+
+        AbstractContainerMenu container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
+            @Override
+            public MenuType<?> getType() {
+                return getContainers(inventory.getBukkitInventory().getSize());
+            }
+        };
+
+        container.setTitle(new TextComponent(view.getTitle()));
+        container = CraftEventFactory.callInventoryOpenEvent(nmsPlayer, container);
+
+        if (container == null) {
+            return null;
+        }
+
+        nmsPlayer.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(),
+                new TextComponent(container.getBukkitView().getTitle())));
+        nmsPlayer.containerMenu = container;
+        nmsPlayer.initMenu(container);
+
+        return container.getBukkitView();
+
+    }
+
+    private @Nullable InventoryView getView(Player player, ISpecialInventory inventory) {
+        if (inventory instanceof SpecialEnderChest) {
+            return new OpenInventoryView(player, inventory, "container.enderchest", "'s Ender Chest");
+        } else if (inventory instanceof SpecialPlayerInventory) {
+            return new OpenInventoryView(player, inventory, "container.player", "'s Inventory");
+        } else {
+            return null;
+        }
+    }
+
+    static @NotNull MenuType<?> getContainers(int inventorySize) {
+
+        return switch (inventorySize) {
+            case 9 -> MenuType.GENERIC_9x1;
+            case 18 -> MenuType.GENERIC_9x2;
+            case 36 -> MenuType.GENERIC_9x4; // PLAYER
+            case 41, 45 -> MenuType.GENERIC_9x5;
+            case 54 -> MenuType.GENERIC_9x6;
+            default -> MenuType.GENERIC_9x3; // Default 27-slot inventory
+        };
+    }
+
+    @Override
+    public int convertToPlayerSlot(InventoryView view, int rawSlot) {
+        int topSize = view.getTopInventory().getSize();
+        if (topSize <= rawSlot) {
+            // Slot is not inside special inventory, use Bukkit logic.
+            return view.convertSlot(rawSlot);
+        }
+
+        // Main inventory, slots 0-26 -> 9-35
+        if (rawSlot < 27) {
+            return rawSlot + 9;
+        }
+        // Hotbar, slots 27-35 -> 0-8
+        if (rawSlot < 36) {
+            return rawSlot - 27;
+        }
+        // Armor, slots 36-39 -> 39-36
+        if (rawSlot < 40) {
+            return 36 + (39 - rawSlot);
+        }
+        // Off hand
+        if (rawSlot == 40) {
+            return 40;
+        }
+        // Drop slots, "out of inventory"
+        return -1;
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/SpecialEnderChest.java

@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.ContainerHelper;
+import net.minecraft.world.ContainerListener;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.entity.player.StackedContents;
+import net.minecraft.world.inventory.PlayerEnderChestContainer;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialEnderChest extends PlayerEnderChestContainer implements ISpecialEnderChest {
+
+    private final CraftInventory inventory;
+    private ServerPlayer owner;
+    private NonNullList<ItemStack> items;
+    private boolean playerOnline;
+
+    public SpecialEnderChest(final org.bukkit.entity.Player player, final Boolean online) {
+        super(PlayerDataManager.getHandle(player));
+        this.inventory = new CraftInventory(this);
+        this.owner = PlayerDataManager.getHandle(player);
+        this.playerOnline = online;
+        this.items = this.owner.getEnderChestInventory().items;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return inventory;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final org.bukkit.entity.Player player) {
+        if (!this.playerOnline) {
+            try {
+                this.owner = PlayerDataManager.getHandle(player);
+                PlayerEnderChestContainer enderChest = owner.getEnderChestInventory();
+                for (int i = 0; i < enderChest.getContainerSize(); ++i) {
+                    enderChest.setItem(i, this.items.get(i));
+                }
+                this.items = enderChest.items;
+                enderChest.transaction.addAll(this.transaction);
+            } catch (Exception ignored) {}
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull org.bukkit.entity.Player getPlayer() {
+        return owner.getBukkitEntity();
+    }
+
+    @Override
+    public void setChanged() {
+        this.owner.getEnderChestInventory().setChanged();
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.items;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.owner.getEnderChestInventory().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.owner.getEnderChestInventory().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.owner.getEnderChestInventory().getViewers();
+    }
+
+    @Override
+    public boolean stillValid(Player player) {
+        return true;
+    }
+
+    @Override
+    public void setActiveChest(EnderChestBlockEntity enderChest) {
+        this.owner.getEnderChestInventory().setActiveChest(enderChest);
+    }
+
+    @Override
+    public boolean isActiveChest(EnderChestBlockEntity enderChest) {
+        return this.owner.getEnderChestInventory().isActiveChest(enderChest);
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return this.owner.getEnderChestInventory().getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int i) {
+        this.owner.getEnderChestInventory().setMaxStackSize(i);
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.owner.getEnderChestInventory().getOwner();
+    }
+
+    @Override
+    public @Nullable Location getLocation() {
+        return null;
+    }
+
+    @Override
+    public void addListener(ContainerListener listener) {
+        this.owner.getEnderChestInventory().addListener(listener);
+    }
+
+    @Override
+    public void removeListener(ContainerListener listener) {
+        this.owner.getEnderChestInventory().removeListener(listener);
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        return i >= 0 && i < this.items.size() ? this.items.get(i) : ItemStack.EMPTY;
+    }
+
+    @Override
+    public ItemStack removeItem(int i, int j) {
+        ItemStack itemstack = ContainerHelper.removeItem(this.items, i, j);
+        if (!itemstack.isEmpty()) {
+            this.setChanged();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public ItemStack addItem(ItemStack itemstack) {
+        ItemStack localItem = itemstack.copy();
+        this.moveItemToOccupiedSlotsWithSameType(localItem);
+        if (localItem.isEmpty()) {
+            return ItemStack.EMPTY;
+        } else {
+            this.moveItemToEmptySlots(localItem);
+            return localItem.isEmpty() ? ItemStack.EMPTY : localItem;
+        }
+    }
+
+    @Override
+    public boolean canAddItem(ItemStack itemstack) {
+        for (ItemStack itemstack1 : this.items) {
+            if (itemstack1.isEmpty() || ItemStack.isSameItemSameTags(itemstack1, itemstack) && itemstack1.getCount() < itemstack1.getMaxStackSize()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private void moveItemToEmptySlots(ItemStack itemstack) {
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            ItemStack localItem = this.getItem(i);
+            if (localItem.isEmpty()) {
+                this.setItem(i, itemstack.copy());
+                itemstack.setCount(0);
+                return;
+            }
+        }
+    }
+
+    private void moveItemToOccupiedSlotsWithSameType(ItemStack itemstack) {
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            ItemStack localItem = this.getItem(i);
+            if (ItemStack.isSameItemSameTags(localItem, itemstack)) {
+                this.moveItemsBetweenStacks(itemstack, localItem);
+                if (itemstack.isEmpty()) {
+                    return;
+                }
+            }
+        }
+    }
+
+    private void moveItemsBetweenStacks(ItemStack itemstack, ItemStack itemstack1) {
+        int i = Math.min(this.getMaxStackSize(), itemstack1.getMaxStackSize());
+        int j = Math.min(itemstack.getCount(), i - itemstack1.getCount());
+        if (j > 0) {
+            itemstack1.grow(j);
+            itemstack.shrink(j);
+            this.setChanged();
+        }
+    }
+
+    @Override
+    public ItemStack removeItemNoUpdate(int i) {
+        ItemStack itemstack = this.items.get(i);
+        if (itemstack.isEmpty()) {
+            return ItemStack.EMPTY;
+        } else {
+            this.items.set(i, ItemStack.EMPTY);
+            return itemstack;
+        }
+    }
+
+    @Override
+    public void setItem(int i, ItemStack itemstack) {
+        this.items.set(i, itemstack);
+        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
+            itemstack.setCount(this.getMaxStackSize());
+        }
+
+        this.setChanged();
+    }
+
+    @Override
+    public int getContainerSize() {
+        return this.owner.getEnderChestInventory().getContainerSize();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return this.items.stream().allMatch(ItemStack::isEmpty);
+    }
+
+    @Override
+    public void startOpen(Player player) {
+    }
+
+    @Override
+    public void stopOpen(Player player) {
+    }
+
+    @Override
+    public boolean canPlaceItem(int i, ItemStack itemstack) {
+        return true;
+    }
+
+    @Override
+    public void clearContent() {
+        this.items.clear();
+        this.setChanged();
+    }
+
+    @Override
+    public void fillStackedContents(StackedContents stackedContents) {
+        for (ItemStack itemstack : this.items) {
+            stackedContents.accountStack(itemstack);
+        }
+
+    }
+
+    @Override
+    public List<ItemStack> removeAllItems() {
+        List<ItemStack> list = this.items.stream().filter(Predicate.not(ItemStack::isEmpty)).collect(Collectors.toList());
+        this.clearContent();
+        return list;
+    }
+
+    @Override
+    public ItemStack removeItemType(Item item, int i) {
+        ItemStack itemstack = new ItemStack(item, 0);
+
+        for(int j = this.getContainerSize() - 1; j >= 0; --j) {
+            ItemStack localItem = this.getItem(j);
+            if (localItem.getItem().equals(item)) {
+                int k = i - itemstack.getCount();
+                ItemStack splitItem = localItem.split(k);
+                itemstack.grow(splitItem.getCount());
+                if (itemstack.getCount() == i) {
+                    break;
+                }
+            }
+        }
+
+        if (!itemstack.isEmpty()) {
+            this.setChanged();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public String toString() {
+        return this.items.stream().filter((itemStack) -> !itemStack.isEmpty()).collect(Collectors.toList()).toString();
+    }
+
+    @Override
+    public void fromTag(ListTag listTag) {
+        for (int i = 0; i < this.getContainerSize(); ++i) {
+            this.setItem(i, ItemStack.EMPTY);
+        }
+
+        for (int i = 0; i < listTag.size(); ++i) {
+            CompoundTag compoundTag = listTag.getCompound(i);
+            int j = compoundTag.getByte("Slot") & 255;
+            if (j < this.getContainerSize()) {
+                this.setItem(j, ItemStack.of(compoundTag));
+            }
+        }
+
+    }
+
+}

internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/SpecialPlayerInventory.java

@@ -0,0 +1,769 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_17_R1;
+
+import com.google.common.collect.ImmutableList;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.ReportedException;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.tags.Tag;
+import net.minecraft.world.Container;
+import net.minecraft.world.ContainerHelper;
+import net.minecraft.world.damagesource.DamageSource;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.entity.player.StackedContents;
+import net.minecraft.world.item.ArmorItem;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.state.BlockState;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_17_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_17_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialPlayerInventory extends Inventory implements ISpecialPlayerInventory {
+
+    private final CraftInventory inventory;
+    private boolean playerOnline;
+    private Player player;
+    private NonNullList<ItemStack> items;
+    private NonNullList<ItemStack> armor;
+    private NonNullList<ItemStack> offhand;
+    private List<NonNullList<ItemStack>> compartments;
+
+    public SpecialPlayerInventory(@NotNull org.bukkit.entity.Player bukkitPlayer, @NotNull Boolean online) {
+        super(PlayerDataManager.getHandle(bukkitPlayer));
+        this.inventory = new CraftInventory(this);
+        this.playerOnline = online;
+        this.player = super.player;
+        this.selected = player.getInventory().selected;
+        this.items = this.player.getInventory().items;
+        this.armor = this.player.getInventory().armor;
+        this.offhand = this.player.getInventory().offhand;
+        this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull org.bukkit.entity.Player player) {
+        if (!this.playerOnline) {
+            Player entityPlayer = PlayerDataManager.getHandle(player);
+            entityPlayer.getInventory().transaction.addAll(this.transaction);
+            this.player = entityPlayer;
+            for (int i = 0; i < getContainerSize(); ++i) {
+                this.player.getInventory().setItem(i, getRawItem(i));
+            }
+            this.player.getInventory().selected = this.selected;
+            this.items = this.player.getInventory().items;
+            this.armor = this.player.getInventory().armor;
+            this.offhand = this.player.getInventory().offhand;
+            this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return this.inventory;
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public @NotNull HumanEntity getPlayer() {
+        return this.player.getBukkitEntity();
+    }
+
+    private @NotNull ItemStack getRawItem(int i) {
+        return super.getItem(i);
+    }
+
+    private void setRawItem(int i, @NotNull ItemStack itemStack) {
+        super.setItem(i, itemStack);
+    }
+
+    private static record IndexedCompartment(@Nullable NonNullList<ItemStack> compartment, int index) {}
+
+    private @NotNull SpecialPlayerInventory.IndexedCompartment getIndexedContent(int index) {
+        if (index < items.size()) {
+            return new IndexedCompartment(items, getReversedItemSlotNum(index));
+        }
+
+        index -= items.size();
+
+        if (index < armor.size()) {
+            return new IndexedCompartment(armor, getReversedArmorSlotNum(index));
+        }
+
+        index -= armor.size();
+
+        if (index < offhand.size()) {
+            return new IndexedCompartment(offhand, index);
+        }
+
+        index -= offhand.size();
+
+        return new IndexedCompartment(null, index);
+    }
+
+    private int getReversedArmorSlotNum(final int i) {
+        if (i == 0) {
+            return 3;
+        }
+        if (i == 1) {
+            return 2;
+        }
+        if (i == 2) {
+            return 1;
+        }
+        if (i == 3) {
+            return 0;
+        }
+        return i;
+    }
+
+    private int getReversedItemSlotNum(final int i) {
+        if (i >= 27) {
+            return i - 27;
+        }
+        return i + 9;
+    }
+
+    private boolean contains(Predicate<ItemStack> predicate) {
+        return this.compartments.stream().flatMap(NonNullList::stream).anyMatch(predicate);
+    }
+
+    @Override
+    public List<ItemStack> getArmorContents() {
+        return this.armor;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.player.getInventory().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.player.getInventory().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.player.getInventory().getViewers();
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.player.getBukkitEntity();
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return this.player.getInventory().getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int size) {
+        this.player.getInventory().setMaxStackSize(size);
+    }
+
+    @Override
+    public Location getLocation() {
+        return this.player.getBukkitEntity().getLocation();
+    }
+
+    @Override
+    public boolean hasCustomName() {
+        return false;
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.compartments.stream().flatMap(Collection::stream).collect(Collectors.toList());
+    }
+
+    @Override
+    public ItemStack getSelected() {
+        return isHotbarSlot(this.selected) ? this.items.get(this.selected) : ItemStack.EMPTY;
+    }
+
+    private boolean hasRemainingSpaceForItem(ItemStack itemstack, ItemStack itemstack1) {
+        return !itemstack.isEmpty() && ItemStack.isSameItemSameTags(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
+    }
+
+    @Override
+    public int canHold(ItemStack itemstack) {
+        int remains = itemstack.getCount();
+
+        for (int i = 0; i < this.items.size(); ++i) {
+            ItemStack itemstack1 = this.getRawItem(i);
+            if (itemstack1.isEmpty()) {
+                return itemstack.getCount();
+            }
+
+            if (this.hasRemainingSpaceForItem(itemstack1, itemstack)) {
+                remains -= (itemstack1.getMaxStackSize() < this.getMaxStackSize() ? itemstack1.getMaxStackSize() : this.getMaxStackSize()) - itemstack1.getCount();
+            }
+
+            if (remains <= 0) {
+                return itemstack.getCount();
+            }
+        }
+
+        ItemStack offhandItemStack = this.getRawItem(this.items.size() + this.armor.size());
+        if (this.hasRemainingSpaceForItem(offhandItemStack, itemstack)) {
+            remains -= (offhandItemStack.getMaxStackSize() < this.getMaxStackSize() ? offhandItemStack.getMaxStackSize() : this.getMaxStackSize()) - offhandItemStack.getCount();
+        }
+
+        return remains <= 0 ? itemstack.getCount() : itemstack.getCount() - remains;
+    }
+
+    @Override
+    public int getFreeSlot() {
+        for(int i = 0; i < this.items.size(); ++i) {
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public void setPickedItem(ItemStack itemstack) {
+        int i = this.findSlotMatchingItem(itemstack);
+        if (isHotbarSlot(i)) {
+            this.selected = i;
+        } else if (i == -1) {
+            this.selected = this.getSuitableHotbarSlot();
+            if (!this.items.get(this.selected).isEmpty()) {
+                int j = this.getFreeSlot();
+                if (j != -1) {
+                    this.items.set(j, this.items.get(this.selected));
+                }
+            }
+
+            this.items.set(this.selected, itemstack);
+        } else {
+            this.pickSlot(i);
+        }
+
+    }
+
+    @Override
+    public void pickSlot(int i) {
+        this.selected = this.getSuitableHotbarSlot();
+        ItemStack itemstack = this.items.get(this.selected);
+        this.items.set(this.selected, this.items.get(i));
+        this.items.set(i, itemstack);
+    }
+
+    @Override
+    public int findSlotMatchingItem(ItemStack itemstack) {
+        for(int i = 0; i < this.items.size(); ++i) {
+            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemstack, this.items.get(i))) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int findSlotMatchingUnusedItem(ItemStack itemStack) {
+        for(int i = 0; i < this.items.size(); ++i) {
+            ItemStack localItem = this.items.get(i);
+            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemStack, this.items.get(i)) && !this.items.get(i).isDamaged() && !localItem.isEnchanted() && !localItem.hasCustomHoverName()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int getSuitableHotbarSlot() {
+        int i;
+        int j;
+        for(j = 0; j < 9; ++j) {
+            i = (this.selected + j) % 9;
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        for(j = 0; j < 9; ++j) {
+            i = (this.selected + j) % 9;
+            if (!this.items.get(i).isEnchanted()) {
+                return i;
+            }
+        }
+
+        return this.selected;
+    }
+
+    @Override
+    public void swapPaint(double d0) {
+        if (d0 > 0.0D) {
+            d0 = 1.0D;
+        }
+
+        if (d0 < 0.0D) {
+            d0 = -1.0D;
+        }
+
+        this.selected = (int) (this.selected - d0);
+
+        while (this.selected < 0) {
+            this.selected += 9;
+        }
+
+        while(this.selected >= 9) {
+            this.selected -= 9;
+        }
+    }
+
+    @Override
+    public int clearOrCountMatchingItems(Predicate<ItemStack> predicate, int i, Container container) {
+        byte b0 = 0;
+        boolean flag = i == 0;
+        int j = b0 + ContainerHelper.clearOrCountMatchingItems(this, predicate, i - b0, flag);
+        j += ContainerHelper.clearOrCountMatchingItems(container, predicate, i - j, flag);
+        ItemStack itemstack = this.player.containerMenu.getCarried();
+        j += ContainerHelper.clearOrCountMatchingItems(itemstack, predicate, i - j, flag);
+        if (itemstack.isEmpty()) {
+            this.player.containerMenu.setCarried(ItemStack.EMPTY);
+        }
+
+        return j;
+    }
+
+    private int addResource(ItemStack itemstack) {
+        int i = this.getSlotWithRemainingSpace(itemstack);
+        if (i == -1) {
+            i = this.getFreeSlot();
+        }
+
+        return i == -1 ? itemstack.getCount() : this.addResource(i, itemstack);
+    }
+
+    private int addResource(int i, ItemStack itemstack) {
+        Item item = itemstack.getItem();
+        int j = itemstack.getCount();
+        ItemStack localItemStack = this.getRawItem(i);
+        if (localItemStack.isEmpty()) {
+            localItemStack = new ItemStack(item, 0);
+            if (itemstack.hasTag()) {
+                // hasTag ensures tag not null
+                //noinspection ConstantConditions
+                localItemStack.setTag(itemstack.getTag().copy());
+            }
+
+            this.setRawItem(i, localItemStack);
+        }
+
+        int k = Math.min(j, localItemStack.getMaxStackSize() - localItemStack.getCount());
+
+        if (k > this.getMaxStackSize() - localItemStack.getCount()) {
+            k = this.getMaxStackSize() - localItemStack.getCount();
+        }
+
+        if (k != 0) {
+            j -= k;
+            localItemStack.grow(k);
+            localItemStack.setPopTime(5);
+        }
+
+        return j;
+    }
+
+    @Override
+    public int getSlotWithRemainingSpace(ItemStack itemstack) {
+        if (this.hasRemainingSpaceForItem(this.getRawItem(this.selected), itemstack)) {
+            return this.selected;
+        } else if (this.hasRemainingSpaceForItem(this.getRawItem(40), itemstack)) {
+            return 40;
+        } else {
+            for(int i = 0; i < this.items.size(); ++i) {
+                if (this.hasRemainingSpaceForItem(this.items.get(i), itemstack)) {
+                    return i;
+                }
+            }
+
+            return -1;
+        }
+    }
+
+    @Override
+    public void tick() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                if (!compartment.get(i).isEmpty()) {
+                    compartment.get(i).inventoryTick(this.player.level, this.player, i, this.selected == i);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public boolean add(ItemStack itemStack) {
+        return this.add(-1, itemStack);
+    }
+
+    @Override
+    public boolean add(int i, ItemStack itemStack) {
+        if (itemStack.isEmpty()) {
+            return false;
+        } else {
+            try {
+                if (itemStack.isDamaged()) {
+                    if (i == -1) {
+                        i = this.getFreeSlot();
+                    }
+
+                    if (i >= 0) {
+                        this.items.set(i, itemStack.copy());
+                        this.items.get(i).setPopTime(5);
+                        itemStack.setCount(0);
+                        return true;
+                    } else if (this.player.getAbilities().instabuild) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return false;
+                    }
+                } else {
+                    int j;
+                    do {
+                        j = itemStack.getCount();
+                        if (i == -1) {
+                            itemStack.setCount(this.addResource(itemStack));
+                        } else {
+                            itemStack.setCount(this.addResource(i, itemStack));
+                        }
+                    } while(!itemStack.isEmpty() && itemStack.getCount() < j);
+
+                    if (itemStack.getCount() == j && this.player.getAbilities().instabuild) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return itemStack.getCount() < j;
+                    }
+                }
+            } catch (Throwable var6) {
+                CrashReport crashReport = CrashReport.forThrowable(var6, "Adding item to inventory");
+                CrashReportCategory crashReportCategory = crashReport.addCategory("Item being added");
+                crashReportCategory.setDetail("Item ID", Item.getId(itemStack.getItem()));
+                crashReportCategory.setDetail("Item data", itemStack.getDamageValue());
+                crashReportCategory.setDetail("Item name", () -> itemStack.getHoverName().getString());
+                throw new ReportedException(crashReport);
+            }
+        }
+    }
+
+    @Override
+    public void placeItemBackInInventory(ItemStack itemStack) {
+        this.placeItemBackInInventory(itemStack, true);
+    }
+
+    @Override
+    public void placeItemBackInInventory(ItemStack itemStack, boolean flag) {
+        while(true) {
+            if (!itemStack.isEmpty()) {
+                int i = this.getSlotWithRemainingSpace(itemStack);
+                if (i == -1) {
+                    i = this.getFreeSlot();
+                }
+
+                if (i != -1) {
+                    int j = itemStack.getMaxStackSize() - this.getRawItem(i).getCount();
+                    if (this.add(i, itemStack.split(j)) && flag && this.player instanceof ServerPlayer) {
+                        ((ServerPlayer)this.player).connection.send(new ClientboundContainerSetSlotPacket(-2, 0, i, this.getRawItem(i)));
+                    }
+                    continue;
+                }
+
+                this.player.drop(itemStack, false);
+            }
+
+            return;
+        }
+    }
+
+    @Override
+    public ItemStack removeItem(int rawIndex, final int j) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null
+                || indexedCompartment.compartment().get(indexedCompartment.index()).isEmpty()) {
+            return ItemStack.EMPTY;
+        }
+
+        return ContainerHelper.removeItem(indexedCompartment.compartment(), indexedCompartment.index(), j);
+    }
+
+    @Override
+    public void removeItem(ItemStack itemStack) {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                if (compartment.get(i) == itemStack) {
+                    compartment.set(i, ItemStack.EMPTY);
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public ItemStack removeItemNoUpdate(int rawIndex) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            return ItemStack.EMPTY;
+        }
+
+        ItemStack removed = indexedCompartment.compartment().set(indexedCompartment.index(), ItemStack.EMPTY);
+
+        if (removed.isEmpty()) {
+            return ItemStack.EMPTY;
+        }
+
+        return removed;
+    }
+
+    @Override
+    public void setItem(int rawIndex, final ItemStack itemStack) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            this.player.drop(itemStack, true);
+            return;
+        }
+
+        indexedCompartment.compartment().set(indexedCompartment.index(), itemStack);
+    }
+
+    @Override
+    public float getDestroySpeed(BlockState blockState) {
+        return this.items.get(this.selected).getDestroySpeed(blockState);
+    }
+
+    @Override
+    public ListTag save(ListTag listTag) {
+        for (int i = 0; i < this.items.size(); ++i) {
+            if (!this.items.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)i);
+                this.items.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        for (int i = 0; i < this.armor.size(); ++i) {
+            if (!this.armor.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)(i + 100));
+                this.armor.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        for (int i = 0; i < this.offhand.size(); ++i) {
+            if (!this.offhand.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)(i + 150));
+                this.offhand.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        return listTag;
+    }
+
+    @Override
+    public void load(ListTag listTag) {
+        this.items.clear();
+        this.armor.clear();
+        this.offhand.clear();
+
+        for(int i = 0; i < listTag.size(); ++i) {
+            CompoundTag compoundTag = listTag.getCompound(i);
+            int j = compoundTag.getByte("Slot") & 255;
+            ItemStack itemstack = ItemStack.of(compoundTag);
+            if (!itemstack.isEmpty()) {
+                if (j < this.items.size()) {
+                    this.items.set(j, itemstack);
+                } else if (j >= 100 && j < this.armor.size() + 100) {
+                    this.armor.set(j - 100, itemstack);
+                } else if (j >= 150 && j < this.offhand.size() + 150) {
+                    this.offhand.set(j - 150, itemstack);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public int getContainerSize() {
+        return 45;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return !contains(itemStack -> !itemStack.isEmpty());
+    }
+
+    @Override
+    public ItemStack getItem(int rawIndex) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            return ItemStack.EMPTY;
+        }
+
+        return indexedCompartment.compartment().get(indexedCompartment.index());
+    }
+
+    @Override
+    public Component getName() {
+        return this.player.getName();
+    }
+
+    @Override
+    public ItemStack getArmor(int index) {
+        return this.armor.get(index);
+    }
+
+    @Override
+    public void hurtArmor(DamageSource damagesource, float damage, int[] armorIndices) {
+        if (damage > 0.0F) {
+            damage /= 4.0F;
+            if (damage < 1.0F) {
+                damage = 1.0F;
+            }
+
+            for (int index : armorIndices) {
+                ItemStack itemstack = this.armor.get(index);
+                if ((!damagesource.isFire() || !itemstack.getItem().isFireResistant()) && itemstack.getItem() instanceof ArmorItem) {
+                    itemstack.hurtAndBreak((int) damage, this.player, localPlayer -> localPlayer.broadcastBreakEvent(EquipmentSlot.byTypeAndIndex(EquipmentSlot.Type.ARMOR, index)));
+                }
+            }
+        }
+    }
+
+    @Override
+    public void dropAll() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                ItemStack itemstack = compartment.get(i);
+                if (!itemstack.isEmpty()) {
+                    this.player.drop(itemstack, true, false);
+                    compartment.set(i, ItemStack.EMPTY);
+                }
+            }
+        }
+    }
+
+    @Override
+    public void setChanged() {
+        super.setChanged();
+    }
+
+    @Override
+    public int getTimesChanged() {
+        return super.getTimesChanged();
+    }
+
+    @Override
+    public boolean stillValid(Player player) {
+        return true;
+    }
+
+    @Override
+    public boolean contains(ItemStack itemstack) {
+        return contains(itemStack -> itemStack.isEmpty() && itemStack.sameItem(itemstack));
+    }
+
+    @Override
+    public boolean contains(Tag<Item> tag) {
+        return contains(itemStack -> !itemStack.isEmpty() && itemStack.is(tag));
+    }
+
+    @Override
+    public void replaceWith(Inventory inventory) {
+        Function<Integer, ItemStack> getter;
+
+        if (inventory instanceof SpecialPlayerInventory specialPlayerInventory) {
+            getter = specialPlayerInventory::getRawItem;
+        } else {
+            getter = inventory::getItem;
+        }
+
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            this.setRawItem(i, getter.apply(i));
+        }
+
+        this.selected = inventory.selected;
+    }
+
+    @Override
+    public void clearContent() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            compartment.clear();
+        }
+    }
+
+    @Override
+    public void fillStackedContents(StackedContents stackedContents) {
+        for (ItemStack itemstack : this.items) {
+            stackedContents.accountSimpleStack(itemstack);
+        }
+    }
+
+    @Override
+    public ItemStack removeFromSelected(boolean dropWholeStack) {
+        ItemStack itemstack = this.getSelected();
+        return itemstack.isEmpty() ? ItemStack.EMPTY : this.removeItem(this.selected, dropWholeStack ? itemstack.getCount() : 1);
+    }
+
+}

internal/v1_18_R1/pom.xml

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <artifactId>openinvparent</artifactId>
+    <groupId>com.lishid</groupId>
+    <relativePath>../../pom.xml</relativePath>
+    <version>4.1.9-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>openinvadapter1_18_R1</artifactId>
+  <name>OpenInvAdapter1_18_R1</name>
+
+  <properties>
+    <maven.compiler.source>17</maven.compiler.source>
+    <maven.compiler.target>17</maven.compiler.target>
+    <spigot.version>1.18-pre5-R0.1-SNAPSHOT</spigot.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.spigotmc</groupId>
+      <artifactId>spigot-api</artifactId>
+      <version>${spigot.version}</version>
+    </dependency>
+    <dependency>
+      <artifactId>spigot</artifactId>
+      <groupId>org.spigotmc</groupId>
+      <scope>provided</scope>
+      <version>${spigot.version}</version>
+      <classifier>remapped-mojang</classifier>
+    </dependency>
+    <dependency>
+      <artifactId>openinvapi</artifactId>
+      <groupId>com.lishid</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>openinvplugincore</artifactId>
+      <groupId>com.lishid</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>annotations</artifactId>
+      <groupId>org.jetbrains</groupId>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-shade-plugin</artifactId>
+        <configuration>
+          <minimizeJar>true</minimizeJar>
+        </configuration>
+      </plugin>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>net.md-5</groupId>
+        <artifactId>specialsource-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>remap</goal>
+            </goals>
+            <id>remap-obf</id>
+            <configuration>
+              <srgIn>org.spigotmc:minecraft-server:${spigot.version}:txt:maps-mojang</srgIn>
+              <reverse>true</reverse>
+              <remappedDependencies>org.spigotmc:spigot:${spigot.version}:jar:remapped-mojang</remappedDependencies>
+              <remappedArtifactAttached>true</remappedArtifactAttached>
+              <remappedClassifierName>remapped-obf</remappedClassifierName>
+            </configuration>
+          </execution>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>remap</goal>
+            </goals>
+            <id>remap-spigot</id>
+            <configuration>
+              <inputFile>${project.build.directory}/${project.artifactId}-${project.version}-remapped-obf.jar</inputFile>
+              <srgIn>org.spigotmc:minecraft-server:${spigot.version}:csrg:maps-spigot</srgIn>
+              <remappedDependencies>org.spigotmc:spigot:${spigot.version}:jar:remapped-obf</remappedDependencies>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

internal/v1_18_R1/src/main/java/com/lishid/openinv/internal/v1_18_R1/AnySilentContainer.java

@@ -0,0 +1,277 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_18_R1;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IAnySilentContainer;
+import com.lishid.openinv.util.ReflectionHelper;
+import java.lang.reflect.Field;
+import java.util.Optional;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import net.minecraft.core.BlockPos;
+import net.minecraft.network.chat.TextComponent;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.ServerPlayerGameMode;
+import net.minecraft.world.CompoundContainer;
+import net.minecraft.world.MenuProvider;
+import net.minecraft.world.SimpleMenuProvider;
+import net.minecraft.world.entity.monster.Shulker;
+import net.minecraft.world.inventory.ChestMenu;
+import net.minecraft.world.inventory.MenuType;
+import net.minecraft.world.inventory.PlayerEnderChestContainer;
+import net.minecraft.world.level.GameType;
+import net.minecraft.world.level.block.BarrelBlock;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.ChestBlock;
+import net.minecraft.world.level.block.DoubleBlockCombiner;
+import net.minecraft.world.level.block.ShulkerBoxBlock;
+import net.minecraft.world.level.block.TrappedChestBlock;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.entity.ChestBlockEntity;
+import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
+import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
+import net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.phys.AABB;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.Statistic;
+import org.bukkit.block.ShulkerBox;
+import org.bukkit.craftbukkit.v1_18_R1.CraftWorld;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class AnySilentContainer implements IAnySilentContainer {
+
+    private @Nullable Field serverPlayerGameModeGameType;
+
+    public AnySilentContainer() {
+        try {
+            try {
+                // IDE warns about field not existing, but SpecialSource does not remap strings used in reflection.
+                // The warning is not suppressed as a reminder that it must manually be checked on updates.
+                this.serverPlayerGameModeGameType = ServerPlayerGameMode.class.getDeclaredField("b");
+                this.serverPlayerGameModeGameType.setAccessible(true);
+            } catch (NoSuchFieldException e) {
+                Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+                logger.warning("ServerPlayerGameMode#gameModeForPlayer's obfuscated name has changed!");
+                logger.warning("Please report this at https://github.com/Jikoo/OpenInv/issues");
+                logger.warning("Attempting to fall through using reflection. Please verify that SilentContainer does not fail.");
+                // N.B. gameModeForPlayer is (for now) declared before previousGameModeForPlayer so silent shouldn't break.
+                this.serverPlayerGameModeGameType = ReflectionHelper.grabFieldByType(ServerPlayerGameMode.class, GameType.class);
+            }
+        } catch (SecurityException e) {
+            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+            logger.warning("Unable to directly write player game mode! SilentContainer will fail.");
+            logger.log(Level.WARNING, "Error obtaining GameType field", e);
+        }
+    }
+
+    @Override
+    public boolean isShulkerBlocked(ShulkerBox box) {
+        org.bukkit.World bukkitWorld = box.getWorld();
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
+        }
+
+        if (!(bukkitWorld instanceof CraftWorld craftWorld)) {
+            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
+            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
+            return false;
+        }
+
+        final ServerLevel world = craftWorld.getHandle();
+        final BlockPos blockPosition = new BlockPos(box.getX(), box.getY(), box.getZ());
+        final BlockEntity tile = world.getBlockEntity(blockPosition);
+
+        if (!(tile instanceof ShulkerBoxBlockEntity shulkerBoxBlockEntity)
+                || shulkerBoxBlockEntity.getAnimationStatus() != ShulkerBoxBlockEntity.AnimationStatus.CLOSED) {
+            return false;
+        }
+
+        BlockState blockState = world.getBlockState(blockPosition);
+
+        // See net.minecraft.world.level.block.ShulkerBoxBlock#canOpen
+        AABB boundingBox = Shulker.getProgressDeltaAabb(blockState.getValue(ShulkerBoxBlock.FACING), 0.0F, 0.5F)
+                .move(blockPosition)
+                .deflate(1.0E-6D);
+        return !world.noCollision(boundingBox);
+    }
+
+    @Override
+    public boolean activateContainer(
+            @NotNull final Player bukkitPlayer,
+            final boolean silentchest,
+            @NotNull final org.bukkit.block.Block bukkitBlock) {
+
+        // Silent ender chest is API-only
+        if (silentchest && bukkitBlock.getType() == Material.ENDER_CHEST) {
+            bukkitPlayer.openInventory(bukkitPlayer.getEnderChest());
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        final ServerLevel level = player.getLevel();
+        final BlockPos blockPos = new BlockPos(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        final BlockEntity blockEntity = level.getBlockEntity(blockPos);
+
+        if (blockEntity == null) {
+            return false;
+        }
+
+        if (blockEntity instanceof EnderChestBlockEntity enderChestTile) {
+            // Anychest ender chest. See net.minecraft.world.level.block.BlockEnderChest
+            PlayerEnderChestContainer enderChest = player.getEnderChestInventory();
+            enderChest.setActiveChest(enderChestTile);
+            player.openMenu(new SimpleMenuProvider((containerCounter, playerInventory, ignored) -> {
+                MenuType<?> containers = PlayerDataManager.getContainers(enderChest.getContainerSize());
+                int rows = enderChest.getContainerSize() / 9;
+                return new ChestMenu(containers, containerCounter, playerInventory, enderChest, rows);
+            }, new TextComponent("container.enderchest")));
+            bukkitPlayer.incrementStatistic(Statistic.ENDERCHEST_OPENED);
+            return true;
+        }
+
+        if (!(blockEntity instanceof MenuProvider menuProvider)) {
+            return false;
+        }
+
+        BlockState blockState = level.getBlockState(blockPos);
+        Block block = blockState.getBlock();
+
+        if (block instanceof ChestBlock chestBlock) {
+
+            // boolean flag: check if chest is blocked
+            Optional<MenuProvider> menuOptional = chestBlock.combine(blockState, level, blockPos, false).apply(
+                    // Combiner is a copy of private ChestBlock.MENU_PROVIDER_COMBINER
+                    new DoubleBlockCombiner.Combiner<ChestBlockEntity, Optional<MenuProvider>>() {
+                        @Override
+                        public Optional<MenuProvider> acceptDouble(ChestBlockEntity localChest1, ChestBlockEntity localChest2) {
+                            CompoundContainer doubleChest = new CompoundContainer(localChest1, localChest2);
+                            return Optional.of(new ChestBlock.DoubleInventory(localChest1, localChest2, doubleChest));
+                        }
+
+                        @Override
+                        public Optional<MenuProvider> acceptSingle(ChestBlockEntity localChest) {
+                            return Optional.of(localChest);
+                        }
+
+                        @Override
+                        public Optional<MenuProvider> acceptNone() {
+                            return Optional.empty();
+                        }
+                    });
+
+            if (menuOptional.isEmpty()) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+
+            menuProvider = menuOptional.get();
+
+            if (block instanceof TrappedChestBlock) {
+                bukkitPlayer.incrementStatistic(Statistic.TRAPPED_CHEST_TRIGGERED);
+            } else {
+                bukkitPlayer.incrementStatistic(Statistic.CHEST_OPENED);
+            }
+        }
+
+        if (block instanceof ShulkerBoxBlock) {
+            bukkitPlayer.incrementStatistic(Statistic.SHULKER_BOX_OPENED);
+        }
+
+        if (block instanceof BarrelBlock) {
+            bukkitPlayer.incrementStatistic(Statistic.OPEN_BARREL);
+        }
+
+        // AnyChest only - SilentChest not active, container unsupported, or unnecessary.
+        if (!silentchest || player.gameMode.getGameModeForPlayer() == GameType.SPECTATOR) {
+            player.openMenu(menuProvider);
+            return true;
+        }
+
+        // SilentChest requires access to setting players' game mode directly.
+        if (this.serverPlayerGameModeGameType == null) {
+            return false;
+        }
+
+        if (blockEntity instanceof RandomizableContainerBlockEntity lootable) {
+            if (lootable.lootTable != null) {
+                OpenInv.getPlugin(OpenInv.class).sendSystemMessage(bukkitPlayer, "messages.error.lootNotGenerated");
+                return false;
+            }
+        }
+
+        GameType gameType = player.gameMode.getGameModeForPlayer();
+        this.forceGameType(player, GameType.SPECTATOR);
+        player.openMenu(menuProvider);
+        this.forceGameType(player, gameType);
+        return true;
+    }
+
+    @Override
+    public void deactivateContainer(@NotNull final Player bukkitPlayer) {
+        if (this.serverPlayerGameModeGameType == null) {
+            return;
+        }
+
+        InventoryView view = bukkitPlayer.getOpenInventory();
+        switch (view.getType()) {
+            case CHEST:
+            case ENDER_CHEST:
+            case SHULKER_BOX:
+            case BARREL:
+                break;
+            default:
+                return;
+        }
+
+        ServerPlayer player = PlayerDataManager.getHandle(bukkitPlayer);
+
+        // Force game mode change without informing plugins or players.
+        // Regular game mode set calls GameModeChangeEvent and is cancellable.
+        GameType gameType = player.gameMode.getGameModeForPlayer();
+        this.forceGameType(player, GameType.SPECTATOR);
+
+        // Close container - note that this is very different from ServerPlayer#closeContainer!
+        // Triggering event must not be re-called or we'll enter an infinite loop.
+        player.doCloseContainer();
+
+        // Revert forced game mode.
+        this.forceGameType(player, gameType);
+    }
+
+    private void forceGameType(final ServerPlayer player, final GameType gameMode) {
+        if (this.serverPlayerGameModeGameType == null) {
+            // No need to warn repeatedly, error on startup and lack of function should be enough.
+            return;
+        }
+        try {
+            this.serverPlayerGameModeGameType.setAccessible(true);
+            this.serverPlayerGameModeGameType.set(player.gameMode, gameMode);
+        } catch (IllegalArgumentException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+}

internal/v1_18_R1/src/main/java/com/lishid/openinv/internal/v1_18_R1/OpenPlayer.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_18_R1;
+
+import java.io.File;
+import net.minecraft.Util;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.NbtIo;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.level.storage.PlayerDataStorage;
+import org.apache.logging.log4j.LogManager;
+import org.bukkit.craftbukkit.v1_18_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_18_R1.entity.CraftPlayer;
+
+public class OpenPlayer extends CraftPlayer {
+
+    public OpenPlayer(CraftServer server, ServerPlayer entity) {
+        super(server, entity);
+    }
+
+    @Override
+    public void loadData() {
+        // See CraftPlayer#loadData
+        CompoundTag loaded = this.server.getHandle().playerIo.load(this.getHandle());
+        if (loaded != null) {
+            readExtraData(loaded);
+        }
+    }
+
+    @Override
+    public void saveData() {
+        ServerPlayer player = this.getHandle();
+        // See net.minecraft.world.level.storage.PlayerDataStorage#save(EntityHuman)
+        try {
+            PlayerDataStorage worldNBTStorage = player.server.getPlayerList().playerIo;
+
+            CompoundTag playerData = player.saveWithoutId(new CompoundTag());
+            setExtraData(playerData);
+
+            if (!isOnline()) {
+                // Special case: save old vehicle data
+                CompoundTag oldData = worldNBTStorage.load(player);
+
+                if (oldData != null && oldData.contains("RootVehicle", 10)) {
+                    // See net.minecraft.server.PlayerList#a(NetworkManager, EntityPlayer) and net.minecraft.server.EntityPlayer#b(NBTTagCompound)
+                    playerData.put("RootVehicle", oldData.getCompound("RootVehicle"));
+                }
+            }
+
+            File file = File.createTempFile(player.getStringUUID() + "-", ".dat", worldNBTStorage.getPlayerDir());
+            NbtIo.writeCompressed(playerData, file);
+            File file1 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat");
+            File file2 = new File(worldNBTStorage.getPlayerDir(), player.getStringUUID() + ".dat_old");
+            Util.safeReplaceFile(file1, file, file2);
+        } catch (Exception e) {
+            LogManager.getLogger().warn("Failed to save player data for {}", player.getName().getString());
+        }
+    }
+
+}

internal/v1_18_R1/src/main/java/com/lishid/openinv/internal/v1_18_R1/PlayerDataManager.java

@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_18_R1;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.IPlayerDataManager;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.internal.OpenInventoryView;
+import com.mojang.authlib.GameProfile;
+import java.lang.reflect.Field;
+import java.util.logging.Logger;
+import net.minecraft.network.chat.TextComponent;
+import net.minecraft.network.protocol.game.ClientboundOpenScreenPacket;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.world.inventory.MenuType;
+import net.minecraft.world.level.Level;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Server;
+import org.bukkit.craftbukkit.v1_18_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_18_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_18_R1.event.CraftEventFactory;
+import org.bukkit.craftbukkit.v1_18_R1.inventory.CraftContainer;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class PlayerDataManager implements IPlayerDataManager {
+
+    private @Nullable Field bukkitEntity;
+
+    public PlayerDataManager() {
+        try {
+            bukkitEntity = Entity.class.getDeclaredField("bukkitEntity");
+        } catch (NoSuchFieldException e) {
+            Logger logger = OpenInv.getPlugin(OpenInv.class).getLogger();
+            logger.warning("Unable to obtain field to inject custom save process - players' mounts may be deleted when loaded.");
+            logger.log(java.util.logging.Level.WARNING, e.getMessage(), e);
+            bukkitEntity = null;
+        }
+    }
+
+    public static @NotNull ServerPlayer getHandle(final Player player) {
+        if (player instanceof CraftPlayer) {
+            return ((CraftPlayer) player).getHandle();
+        }
+
+        Server server = player.getServer();
+        ServerPlayer nmsPlayer = null;
+
+        if (server instanceof CraftServer) {
+            nmsPlayer = ((CraftServer) server).getHandle().getPlayer(player.getUniqueId());
+        }
+
+        if (nmsPlayer == null) {
+            // Could use reflection to examine fields, but it's honestly not worth the bother.
+            throw new RuntimeException("Unable to fetch EntityPlayer from provided Player implementation");
+        }
+
+        return nmsPlayer;
+    }
+
+    @Override
+    public @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline) {
+        // Ensure player has data
+        if (!offline.hasPlayedBefore()) {
+            return null;
+        }
+
+        // Create a profile and entity to load the player data
+        // See net.minecraft.server.PlayerList#attemptLogin
+        GameProfile profile = new GameProfile(offline.getUniqueId(),
+                offline.getName() != null ? offline.getName() : offline.getUniqueId().toString());
+        MinecraftServer server = ((CraftServer) Bukkit.getServer()).getServer();
+        ServerLevel worldServer = server.getLevel(Level.OVERWORLD);
+
+        if (worldServer == null) {
+            return null;
+        }
+
+        ServerPlayer entity = new ServerPlayer(server, worldServer, profile);
+
+        try {
+            injectPlayer(entity);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+        // Get the bukkit entity
+        Player target = entity.getBukkitEntity();
+        if (target != null) {
+            // Load data
+            target.loadData();
+        }
+        // Return the entity
+        return target;
+    }
+
+    void injectPlayer(ServerPlayer player) throws IllegalAccessException {
+        if (bukkitEntity == null) {
+            return;
+        }
+
+        bukkitEntity.setAccessible(true);
+
+        bukkitEntity.set(player, new OpenPlayer(player.server.server, player));
+    }
+
+    @NotNull
+    @Override
+    public Player inject(@NotNull Player player) {
+        try {
+            ServerPlayer nmsPlayer = getHandle(player);
+            injectPlayer(nmsPlayer);
+            return nmsPlayer.getBukkitEntity();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+            return player;
+        }
+    }
+
+    @Nullable
+    @Override
+    public InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
+
+        ServerPlayer nmsPlayer = getHandle(player);
+
+        if (nmsPlayer.connection == null) {
+            return null;
+        }
+
+        InventoryView view = getView(player, inventory);
+
+        if (view == null) {
+            return player.openInventory(inventory.getBukkitInventory());
+        }
+
+        AbstractContainerMenu container = new CraftContainer(view, nmsPlayer, nmsPlayer.nextContainerCounter()) {
+            @Override
+            public MenuType<?> getType() {
+                return getContainers(inventory.getBukkitInventory().getSize());
+            }
+        };
+
+        container.setTitle(new TextComponent(view.getTitle()));
+        container = CraftEventFactory.callInventoryOpenEvent(nmsPlayer, container);
+
+        if (container == null) {
+            return null;
+        }
+
+        nmsPlayer.connection.send(new ClientboundOpenScreenPacket(container.containerId, container.getType(),
+                new TextComponent(container.getBukkitView().getTitle())));
+        nmsPlayer.containerMenu = container;
+        nmsPlayer.initMenu(container);
+
+        return container.getBukkitView();
+
+    }
+
+    private @Nullable InventoryView getView(Player player, ISpecialInventory inventory) {
+        if (inventory instanceof SpecialEnderChest) {
+            return new OpenInventoryView(player, inventory, "container.enderchest", "'s Ender Chest");
+        } else if (inventory instanceof SpecialPlayerInventory) {
+            return new OpenInventoryView(player, inventory, "container.player", "'s Inventory");
+        } else {
+            return null;
+        }
+    }
+
+    static @NotNull MenuType<?> getContainers(int inventorySize) {
+
+        return switch (inventorySize) {
+            case 9 -> MenuType.GENERIC_9x1;
+            case 18 -> MenuType.GENERIC_9x2;
+            case 36 -> MenuType.GENERIC_9x4; // PLAYER
+            case 41, 45 -> MenuType.GENERIC_9x5;
+            case 54 -> MenuType.GENERIC_9x6;
+            default -> MenuType.GENERIC_9x3; // Default 27-slot inventory
+        };
+    }
+
+    @Override
+    public int convertToPlayerSlot(InventoryView view, int rawSlot) {
+        int topSize = view.getTopInventory().getSize();
+        if (topSize <= rawSlot) {
+            // Slot is not inside special inventory, use Bukkit logic.
+            return view.convertSlot(rawSlot);
+        }
+
+        // Main inventory, slots 0-26 -> 9-35
+        if (rawSlot < 27) {
+            return rawSlot + 9;
+        }
+        // Hotbar, slots 27-35 -> 0-8
+        if (rawSlot < 36) {
+            return rawSlot - 27;
+        }
+        // Armor, slots 36-39 -> 39-36
+        if (rawSlot < 40) {
+            return 36 + (39 - rawSlot);
+        }
+        // Off hand
+        if (rawSlot == 40) {
+            return 40;
+        }
+        // Drop slots, "out of inventory"
+        return -1;
+    }
+
+}

internal/v1_18_R1/src/main/java/com/lishid/openinv/internal/v1_18_R1/SpecialEnderChest.java

@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_18_R1;
+
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.ContainerHelper;
+import net.minecraft.world.ContainerListener;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.entity.player.StackedContents;
+import net.minecraft.world.inventory.PlayerEnderChestContainer;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.entity.EnderChestBlockEntity;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_18_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_18_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialEnderChest extends PlayerEnderChestContainer implements ISpecialEnderChest {
+
+    private final CraftInventory inventory;
+    private ServerPlayer owner;
+    private NonNullList<ItemStack> items;
+    private boolean playerOnline;
+
+    public SpecialEnderChest(final org.bukkit.entity.Player player, final Boolean online) {
+        super(PlayerDataManager.getHandle(player));
+        this.inventory = new CraftInventory(this);
+        this.owner = PlayerDataManager.getHandle(player);
+        this.playerOnline = online;
+        this.items = this.owner.getEnderChestInventory().items;
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return inventory;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull final org.bukkit.entity.Player player) {
+        if (!this.playerOnline) {
+            try {
+                this.owner = PlayerDataManager.getHandle(player);
+                PlayerEnderChestContainer enderChest = owner.getEnderChestInventory();
+                for (int i = 0; i < enderChest.getContainerSize(); ++i) {
+                    enderChest.setItem(i, this.items.get(i));
+                }
+                this.items = enderChest.items;
+                enderChest.transaction.addAll(this.transaction);
+            } catch (Exception ignored) {}
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull org.bukkit.entity.Player getPlayer() {
+        return owner.getBukkitEntity();
+    }
+
+    @Override
+    public void setChanged() {
+        this.owner.getEnderChestInventory().setChanged();
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.items;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.owner.getEnderChestInventory().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.owner.getEnderChestInventory().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.owner.getEnderChestInventory().getViewers();
+    }
+
+    @Override
+    public boolean stillValid(Player player) {
+        return true;
+    }
+
+    @Override
+    public void setActiveChest(EnderChestBlockEntity enderChest) {
+        this.owner.getEnderChestInventory().setActiveChest(enderChest);
+    }
+
+    @Override
+    public boolean isActiveChest(EnderChestBlockEntity enderChest) {
+        return this.owner.getEnderChestInventory().isActiveChest(enderChest);
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return this.owner.getEnderChestInventory().getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int i) {
+        this.owner.getEnderChestInventory().setMaxStackSize(i);
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.owner.getEnderChestInventory().getOwner();
+    }
+
+    @Override
+    public @Nullable Location getLocation() {
+        return null;
+    }
+
+    @Override
+    public void addListener(ContainerListener listener) {
+        this.owner.getEnderChestInventory().addListener(listener);
+    }
+
+    @Override
+    public void removeListener(ContainerListener listener) {
+        this.owner.getEnderChestInventory().removeListener(listener);
+    }
+
+    @Override
+    public ItemStack getItem(int i) {
+        return i >= 0 && i < this.items.size() ? this.items.get(i) : ItemStack.EMPTY;
+    }
+
+    @Override
+    public ItemStack removeItem(int i, int j) {
+        ItemStack itemstack = ContainerHelper.removeItem(this.items, i, j);
+        if (!itemstack.isEmpty()) {
+            this.setChanged();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public ItemStack addItem(ItemStack itemstack) {
+        ItemStack localItem = itemstack.copy();
+        this.moveItemToOccupiedSlotsWithSameType(localItem);
+        if (localItem.isEmpty()) {
+            return ItemStack.EMPTY;
+        } else {
+            this.moveItemToEmptySlots(localItem);
+            return localItem.isEmpty() ? ItemStack.EMPTY : localItem;
+        }
+    }
+
+    @Override
+    public boolean canAddItem(ItemStack itemstack) {
+        for (ItemStack itemstack1 : this.items) {
+            if (itemstack1.isEmpty() || ItemStack.isSameItemSameTags(itemstack1, itemstack) && itemstack1.getCount() < itemstack1.getMaxStackSize()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private void moveItemToEmptySlots(ItemStack itemstack) {
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            ItemStack localItem = this.getItem(i);
+            if (localItem.isEmpty()) {
+                this.setItem(i, itemstack.copy());
+                itemstack.setCount(0);
+                return;
+            }
+        }
+    }
+
+    private void moveItemToOccupiedSlotsWithSameType(ItemStack itemstack) {
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            ItemStack localItem = this.getItem(i);
+            if (ItemStack.isSameItemSameTags(localItem, itemstack)) {
+                this.moveItemsBetweenStacks(itemstack, localItem);
+                if (itemstack.isEmpty()) {
+                    return;
+                }
+            }
+        }
+    }
+
+    private void moveItemsBetweenStacks(ItemStack itemstack, ItemStack itemstack1) {
+        int i = Math.min(this.getMaxStackSize(), itemstack1.getMaxStackSize());
+        int j = Math.min(itemstack.getCount(), i - itemstack1.getCount());
+        if (j > 0) {
+            itemstack1.grow(j);
+            itemstack.shrink(j);
+            this.setChanged();
+        }
+    }
+
+    @Override
+    public ItemStack removeItemNoUpdate(int i) {
+        ItemStack itemstack = this.items.get(i);
+        if (itemstack.isEmpty()) {
+            return ItemStack.EMPTY;
+        } else {
+            this.items.set(i, ItemStack.EMPTY);
+            return itemstack;
+        }
+    }
+
+    @Override
+    public void setItem(int i, ItemStack itemstack) {
+        this.items.set(i, itemstack);
+        if (!itemstack.isEmpty() && itemstack.getCount() > this.getMaxStackSize()) {
+            itemstack.setCount(this.getMaxStackSize());
+        }
+
+        this.setChanged();
+    }
+
+    @Override
+    public int getContainerSize() {
+        return this.owner.getEnderChestInventory().getContainerSize();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return this.items.stream().allMatch(ItemStack::isEmpty);
+    }
+
+    @Override
+    public void startOpen(Player player) {
+    }
+
+    @Override
+    public void stopOpen(Player player) {
+    }
+
+    @Override
+    public boolean canPlaceItem(int i, ItemStack itemstack) {
+        return true;
+    }
+
+    @Override
+    public void clearContent() {
+        this.items.clear();
+        this.setChanged();
+    }
+
+    @Override
+    public void fillStackedContents(StackedContents stackedContents) {
+        for (ItemStack itemstack : this.items) {
+            stackedContents.accountStack(itemstack);
+        }
+
+    }
+
+    @Override
+    public List<ItemStack> removeAllItems() {
+        List<ItemStack> list = this.items.stream().filter(Predicate.not(ItemStack::isEmpty)).collect(Collectors.toList());
+        this.clearContent();
+        return list;
+    }
+
+    @Override
+    public ItemStack removeItemType(Item item, int i) {
+        ItemStack itemstack = new ItemStack(item, 0);
+
+        for(int j = this.getContainerSize() - 1; j >= 0; --j) {
+            ItemStack localItem = this.getItem(j);
+            if (localItem.getItem().equals(item)) {
+                int k = i - itemstack.getCount();
+                ItemStack splitItem = localItem.split(k);
+                itemstack.grow(splitItem.getCount());
+                if (itemstack.getCount() == i) {
+                    break;
+                }
+            }
+        }
+
+        if (!itemstack.isEmpty()) {
+            this.setChanged();
+        }
+
+        return itemstack;
+    }
+
+    @Override
+    public String toString() {
+        return this.items.stream().filter((itemStack) -> !itemStack.isEmpty()).collect(Collectors.toList()).toString();
+    }
+
+    @Override
+    public void fromTag(ListTag listTag) {
+        for (int i = 0; i < this.getContainerSize(); ++i) {
+            this.setItem(i, ItemStack.EMPTY);
+        }
+
+        for (int i = 0; i < listTag.size(); ++i) {
+            CompoundTag compoundTag = listTag.getCompound(i);
+            int j = compoundTag.getByte("Slot") & 255;
+            if (j < this.getContainerSize()) {
+                this.setItem(j, ItemStack.of(compoundTag));
+            }
+        }
+
+    }
+
+}

internal/v1_18_R1/src/main/java/com/lishid/openinv/internal/v1_18_R1/SpecialPlayerInventory.java

@@ -0,0 +1,769 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal.v1_18_R1;
+
+import com.google.common.collect.ImmutableList;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import net.minecraft.CrashReport;
+import net.minecraft.CrashReportCategory;
+import net.minecraft.ReportedException;
+import net.minecraft.core.NonNullList;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.protocol.game.ClientboundContainerSetSlotPacket;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.tags.Tag;
+import net.minecraft.world.Container;
+import net.minecraft.world.ContainerHelper;
+import net.minecraft.world.damagesource.DamageSource;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.entity.player.StackedContents;
+import net.minecraft.world.item.ArmorItem;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.state.BlockState;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.v1_18_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_18_R1.inventory.CraftInventory;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SpecialPlayerInventory extends Inventory implements ISpecialPlayerInventory {
+
+    private final CraftInventory inventory;
+    private boolean playerOnline;
+    private Player player;
+    private NonNullList<ItemStack> items;
+    private NonNullList<ItemStack> armor;
+    private NonNullList<ItemStack> offhand;
+    private List<NonNullList<ItemStack>> compartments;
+
+    public SpecialPlayerInventory(@NotNull org.bukkit.entity.Player bukkitPlayer, @NotNull Boolean online) {
+        super(PlayerDataManager.getHandle(bukkitPlayer));
+        this.inventory = new CraftInventory(this);
+        this.playerOnline = online;
+        this.player = super.player;
+        this.selected = player.getInventory().selected;
+        this.items = this.player.getInventory().items;
+        this.armor = this.player.getInventory().armor;
+        this.offhand = this.player.getInventory().offhand;
+        this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
+    }
+
+    @Override
+    public void setPlayerOnline(@NotNull org.bukkit.entity.Player player) {
+        if (!this.playerOnline) {
+            Player entityPlayer = PlayerDataManager.getHandle(player);
+            entityPlayer.getInventory().transaction.addAll(this.transaction);
+            this.player = entityPlayer;
+            for (int i = 0; i < getContainerSize(); ++i) {
+                this.player.getInventory().setItem(i, getRawItem(i));
+            }
+            this.player.getInventory().selected = this.selected;
+            this.items = this.player.getInventory().items;
+            this.armor = this.player.getInventory().armor;
+            this.offhand = this.player.getInventory().offhand;
+            this.compartments = ImmutableList.of(this.items, this.armor, this.offhand);
+            this.playerOnline = true;
+        }
+    }
+
+    @Override
+    public @NotNull CraftInventory getBukkitInventory() {
+        return this.inventory;
+    }
+
+    @Override
+    public void setPlayerOffline() {
+        this.playerOnline = false;
+    }
+
+    @Override
+    public boolean isInUse() {
+        return !this.getViewers().isEmpty();
+    }
+
+    @Override
+    public @NotNull HumanEntity getPlayer() {
+        return this.player.getBukkitEntity();
+    }
+
+    private @NotNull ItemStack getRawItem(int i) {
+        return super.getItem(i);
+    }
+
+    private void setRawItem(int i, @NotNull ItemStack itemStack) {
+        super.setItem(i, itemStack);
+    }
+
+    private static record IndexedCompartment(@Nullable NonNullList<ItemStack> compartment, int index) {}
+
+    private @NotNull SpecialPlayerInventory.IndexedCompartment getIndexedContent(int index) {
+        if (index < items.size()) {
+            return new IndexedCompartment(items, getReversedItemSlotNum(index));
+        }
+
+        index -= items.size();
+
+        if (index < armor.size()) {
+            return new IndexedCompartment(armor, getReversedArmorSlotNum(index));
+        }
+
+        index -= armor.size();
+
+        if (index < offhand.size()) {
+            return new IndexedCompartment(offhand, index);
+        }
+
+        index -= offhand.size();
+
+        return new IndexedCompartment(null, index);
+    }
+
+    private int getReversedArmorSlotNum(final int i) {
+        if (i == 0) {
+            return 3;
+        }
+        if (i == 1) {
+            return 2;
+        }
+        if (i == 2) {
+            return 1;
+        }
+        if (i == 3) {
+            return 0;
+        }
+        return i;
+    }
+
+    private int getReversedItemSlotNum(final int i) {
+        if (i >= 27) {
+            return i - 27;
+        }
+        return i + 9;
+    }
+
+    private boolean contains(Predicate<ItemStack> predicate) {
+        return this.compartments.stream().flatMap(NonNullList::stream).anyMatch(predicate);
+    }
+
+    @Override
+    public List<ItemStack> getArmorContents() {
+        return this.armor;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        this.player.getInventory().onOpen(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        this.player.getInventory().onClose(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return this.player.getInventory().getViewers();
+    }
+
+    @Override
+    public InventoryHolder getOwner() {
+        return this.player.getBukkitEntity();
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return this.player.getInventory().getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int size) {
+        this.player.getInventory().setMaxStackSize(size);
+    }
+
+    @Override
+    public Location getLocation() {
+        return this.player.getBukkitEntity().getLocation();
+    }
+
+    @Override
+    public boolean hasCustomName() {
+        return false;
+    }
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.compartments.stream().flatMap(Collection::stream).collect(Collectors.toList());
+    }
+
+    @Override
+    public ItemStack getSelected() {
+        return isHotbarSlot(this.selected) ? this.items.get(this.selected) : ItemStack.EMPTY;
+    }
+
+    private boolean hasRemainingSpaceForItem(ItemStack itemstack, ItemStack itemstack1) {
+        return !itemstack.isEmpty() && ItemStack.isSameItemSameTags(itemstack, itemstack1) && itemstack.isStackable() && itemstack.getCount() < itemstack.getMaxStackSize() && itemstack.getCount() < this.getMaxStackSize();
+    }
+
+    @Override
+    public int canHold(ItemStack itemstack) {
+        int remains = itemstack.getCount();
+
+        for (int i = 0; i < this.items.size(); ++i) {
+            ItemStack itemstack1 = this.getRawItem(i);
+            if (itemstack1.isEmpty()) {
+                return itemstack.getCount();
+            }
+
+            if (this.hasRemainingSpaceForItem(itemstack1, itemstack)) {
+                remains -= (itemstack1.getMaxStackSize() < this.getMaxStackSize() ? itemstack1.getMaxStackSize() : this.getMaxStackSize()) - itemstack1.getCount();
+            }
+
+            if (remains <= 0) {
+                return itemstack.getCount();
+            }
+        }
+
+        ItemStack offhandItemStack = this.getRawItem(this.items.size() + this.armor.size());
+        if (this.hasRemainingSpaceForItem(offhandItemStack, itemstack)) {
+            remains -= (offhandItemStack.getMaxStackSize() < this.getMaxStackSize() ? offhandItemStack.getMaxStackSize() : this.getMaxStackSize()) - offhandItemStack.getCount();
+        }
+
+        return remains <= 0 ? itemstack.getCount() : itemstack.getCount() - remains;
+    }
+
+    @Override
+    public int getFreeSlot() {
+        for(int i = 0; i < this.items.size(); ++i) {
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public void setPickedItem(ItemStack itemstack) {
+        int i = this.findSlotMatchingItem(itemstack);
+        if (isHotbarSlot(i)) {
+            this.selected = i;
+        } else if (i == -1) {
+            this.selected = this.getSuitableHotbarSlot();
+            if (!this.items.get(this.selected).isEmpty()) {
+                int j = this.getFreeSlot();
+                if (j != -1) {
+                    this.items.set(j, this.items.get(this.selected));
+                }
+            }
+
+            this.items.set(this.selected, itemstack);
+        } else {
+            this.pickSlot(i);
+        }
+
+    }
+
+    @Override
+    public void pickSlot(int i) {
+        this.selected = this.getSuitableHotbarSlot();
+        ItemStack itemstack = this.items.get(this.selected);
+        this.items.set(this.selected, this.items.get(i));
+        this.items.set(i, itemstack);
+    }
+
+    @Override
+    public int findSlotMatchingItem(ItemStack itemstack) {
+        for(int i = 0; i < this.items.size(); ++i) {
+            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemstack, this.items.get(i))) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int findSlotMatchingUnusedItem(ItemStack itemStack) {
+        for(int i = 0; i < this.items.size(); ++i) {
+            ItemStack localItem = this.items.get(i);
+            if (!this.items.get(i).isEmpty() && ItemStack.isSameItemSameTags(itemStack, this.items.get(i)) && !this.items.get(i).isDamaged() && !localItem.isEnchanted() && !localItem.hasCustomHoverName()) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    @Override
+    public int getSuitableHotbarSlot() {
+        int i;
+        int j;
+        for(j = 0; j < 9; ++j) {
+            i = (this.selected + j) % 9;
+            if (this.items.get(i).isEmpty()) {
+                return i;
+            }
+        }
+
+        for(j = 0; j < 9; ++j) {
+            i = (this.selected + j) % 9;
+            if (!this.items.get(i).isEnchanted()) {
+                return i;
+            }
+        }
+
+        return this.selected;
+    }
+
+    @Override
+    public void swapPaint(double d0) {
+        if (d0 > 0.0D) {
+            d0 = 1.0D;
+        }
+
+        if (d0 < 0.0D) {
+            d0 = -1.0D;
+        }
+
+        this.selected = (int) (this.selected - d0);
+
+        while (this.selected < 0) {
+            this.selected += 9;
+        }
+
+        while(this.selected >= 9) {
+            this.selected -= 9;
+        }
+    }
+
+    @Override
+    public int clearOrCountMatchingItems(Predicate<ItemStack> predicate, int i, Container container) {
+        byte b0 = 0;
+        boolean flag = i == 0;
+        int j = b0 + ContainerHelper.clearOrCountMatchingItems(this, predicate, i - b0, flag);
+        j += ContainerHelper.clearOrCountMatchingItems(container, predicate, i - j, flag);
+        ItemStack itemstack = this.player.containerMenu.getCarried();
+        j += ContainerHelper.clearOrCountMatchingItems(itemstack, predicate, i - j, flag);
+        if (itemstack.isEmpty()) {
+            this.player.containerMenu.setCarried(ItemStack.EMPTY);
+        }
+
+        return j;
+    }
+
+    private int addResource(ItemStack itemstack) {
+        int i = this.getSlotWithRemainingSpace(itemstack);
+        if (i == -1) {
+            i = this.getFreeSlot();
+        }
+
+        return i == -1 ? itemstack.getCount() : this.addResource(i, itemstack);
+    }
+
+    private int addResource(int i, ItemStack itemstack) {
+        Item item = itemstack.getItem();
+        int j = itemstack.getCount();
+        ItemStack localItemStack = this.getRawItem(i);
+        if (localItemStack.isEmpty()) {
+            localItemStack = new ItemStack(item, 0);
+            if (itemstack.hasTag()) {
+                // hasTag ensures tag not null
+                //noinspection ConstantConditions
+                localItemStack.setTag(itemstack.getTag().copy());
+            }
+
+            this.setRawItem(i, localItemStack);
+        }
+
+        int k = Math.min(j, localItemStack.getMaxStackSize() - localItemStack.getCount());
+
+        if (k > this.getMaxStackSize() - localItemStack.getCount()) {
+            k = this.getMaxStackSize() - localItemStack.getCount();
+        }
+
+        if (k != 0) {
+            j -= k;
+            localItemStack.grow(k);
+            localItemStack.setPopTime(5);
+        }
+
+        return j;
+    }
+
+    @Override
+    public int getSlotWithRemainingSpace(ItemStack itemstack) {
+        if (this.hasRemainingSpaceForItem(this.getRawItem(this.selected), itemstack)) {
+            return this.selected;
+        } else if (this.hasRemainingSpaceForItem(this.getRawItem(40), itemstack)) {
+            return 40;
+        } else {
+            for(int i = 0; i < this.items.size(); ++i) {
+                if (this.hasRemainingSpaceForItem(this.items.get(i), itemstack)) {
+                    return i;
+                }
+            }
+
+            return -1;
+        }
+    }
+
+    @Override
+    public void tick() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                if (!compartment.get(i).isEmpty()) {
+                    compartment.get(i).inventoryTick(this.player.level, this.player, i, this.selected == i);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public boolean add(ItemStack itemStack) {
+        return this.add(-1, itemStack);
+    }
+
+    @Override
+    public boolean add(int i, ItemStack itemStack) {
+        if (itemStack.isEmpty()) {
+            return false;
+        } else {
+            try {
+                if (itemStack.isDamaged()) {
+                    if (i == -1) {
+                        i = this.getFreeSlot();
+                    }
+
+                    if (i >= 0) {
+                        this.items.set(i, itemStack.copy());
+                        this.items.get(i).setPopTime(5);
+                        itemStack.setCount(0);
+                        return true;
+                    } else if (this.player.getAbilities().instabuild) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return false;
+                    }
+                } else {
+                    int j;
+                    do {
+                        j = itemStack.getCount();
+                        if (i == -1) {
+                            itemStack.setCount(this.addResource(itemStack));
+                        } else {
+                            itemStack.setCount(this.addResource(i, itemStack));
+                        }
+                    } while(!itemStack.isEmpty() && itemStack.getCount() < j);
+
+                    if (itemStack.getCount() == j && this.player.getAbilities().instabuild) {
+                        itemStack.setCount(0);
+                        return true;
+                    } else {
+                        return itemStack.getCount() < j;
+                    }
+                }
+            } catch (Throwable var6) {
+                CrashReport crashReport = CrashReport.forThrowable(var6, "Adding item to inventory");
+                CrashReportCategory crashReportCategory = crashReport.addCategory("Item being added");
+                crashReportCategory.setDetail("Item ID", Item.getId(itemStack.getItem()));
+                crashReportCategory.setDetail("Item data", itemStack.getDamageValue());
+                crashReportCategory.setDetail("Item name", () -> itemStack.getHoverName().getString());
+                throw new ReportedException(crashReport);
+            }
+        }
+    }
+
+    @Override
+    public void placeItemBackInInventory(ItemStack itemStack) {
+        this.placeItemBackInInventory(itemStack, true);
+    }
+
+    @Override
+    public void placeItemBackInInventory(ItemStack itemStack, boolean flag) {
+        while(true) {
+            if (!itemStack.isEmpty()) {
+                int i = this.getSlotWithRemainingSpace(itemStack);
+                if (i == -1) {
+                    i = this.getFreeSlot();
+                }
+
+                if (i != -1) {
+                    int j = itemStack.getMaxStackSize() - this.getRawItem(i).getCount();
+                    if (this.add(i, itemStack.split(j)) && flag && this.player instanceof ServerPlayer) {
+                        ((ServerPlayer)this.player).connection.send(new ClientboundContainerSetSlotPacket(-2, 0, i, this.getRawItem(i)));
+                    }
+                    continue;
+                }
+
+                this.player.drop(itemStack, false);
+            }
+
+            return;
+        }
+    }
+
+    @Override
+    public ItemStack removeItem(int rawIndex, final int j) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null
+                || indexedCompartment.compartment().get(indexedCompartment.index()).isEmpty()) {
+            return ItemStack.EMPTY;
+        }
+
+        return ContainerHelper.removeItem(indexedCompartment.compartment(), indexedCompartment.index(), j);
+    }
+
+    @Override
+    public void removeItem(ItemStack itemStack) {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                if (compartment.get(i) == itemStack) {
+                    compartment.set(i, ItemStack.EMPTY);
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    public ItemStack removeItemNoUpdate(int rawIndex) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            return ItemStack.EMPTY;
+        }
+
+        ItemStack removed = indexedCompartment.compartment().set(indexedCompartment.index(), ItemStack.EMPTY);
+
+        if (removed.isEmpty()) {
+            return ItemStack.EMPTY;
+        }
+
+        return removed;
+    }
+
+    @Override
+    public void setItem(int rawIndex, final ItemStack itemStack) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            this.player.drop(itemStack, true);
+            return;
+        }
+
+        indexedCompartment.compartment().set(indexedCompartment.index(), itemStack);
+    }
+
+    @Override
+    public float getDestroySpeed(BlockState blockState) {
+        return this.items.get(this.selected).getDestroySpeed(blockState);
+    }
+
+    @Override
+    public ListTag save(ListTag listTag) {
+        for (int i = 0; i < this.items.size(); ++i) {
+            if (!this.items.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)i);
+                this.items.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        for (int i = 0; i < this.armor.size(); ++i) {
+            if (!this.armor.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)(i + 100));
+                this.armor.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        for (int i = 0; i < this.offhand.size(); ++i) {
+            if (!this.offhand.get(i).isEmpty()) {
+                CompoundTag compoundTag = new CompoundTag();
+                compoundTag.putByte("Slot", (byte)(i + 150));
+                this.offhand.get(i).save(compoundTag);
+                listTag.add(compoundTag);
+            }
+        }
+
+        return listTag;
+    }
+
+    @Override
+    public void load(ListTag listTag) {
+        this.items.clear();
+        this.armor.clear();
+        this.offhand.clear();
+
+        for(int i = 0; i < listTag.size(); ++i) {
+            CompoundTag compoundTag = listTag.getCompound(i);
+            int j = compoundTag.getByte("Slot") & 255;
+            ItemStack itemstack = ItemStack.of(compoundTag);
+            if (!itemstack.isEmpty()) {
+                if (j < this.items.size()) {
+                    this.items.set(j, itemstack);
+                } else if (j >= 100 && j < this.armor.size() + 100) {
+                    this.armor.set(j - 100, itemstack);
+                } else if (j >= 150 && j < this.offhand.size() + 150) {
+                    this.offhand.set(j - 150, itemstack);
+                }
+            }
+        }
+
+    }
+
+    @Override
+    public int getContainerSize() {
+        return 45;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return !contains(itemStack -> !itemStack.isEmpty());
+    }
+
+    @Override
+    public ItemStack getItem(int rawIndex) {
+        IndexedCompartment indexedCompartment = getIndexedContent(rawIndex);
+
+        if (indexedCompartment.compartment() == null) {
+            return ItemStack.EMPTY;
+        }
+
+        return indexedCompartment.compartment().get(indexedCompartment.index());
+    }
+
+    @Override
+    public Component getName() {
+        return this.player.getName();
+    }
+
+    @Override
+    public ItemStack getArmor(int index) {
+        return this.armor.get(index);
+    }
+
+    @Override
+    public void hurtArmor(DamageSource damagesource, float damage, int[] armorIndices) {
+        if (damage > 0.0F) {
+            damage /= 4.0F;
+            if (damage < 1.0F) {
+                damage = 1.0F;
+            }
+
+            for (int index : armorIndices) {
+                ItemStack itemstack = this.armor.get(index);
+                if ((!damagesource.isFire() || !itemstack.getItem().isFireResistant()) && itemstack.getItem() instanceof ArmorItem) {
+                    itemstack.hurtAndBreak((int) damage, this.player, localPlayer -> localPlayer.broadcastBreakEvent(EquipmentSlot.byTypeAndIndex(EquipmentSlot.Type.ARMOR, index)));
+                }
+            }
+        }
+    }
+
+    @Override
+    public void dropAll() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            for (int i = 0; i < compartment.size(); ++i) {
+                ItemStack itemstack = compartment.get(i);
+                if (!itemstack.isEmpty()) {
+                    this.player.drop(itemstack, true, false);
+                    compartment.set(i, ItemStack.EMPTY);
+                }
+            }
+        }
+    }
+
+    @Override
+    public void setChanged() {
+        super.setChanged();
+    }
+
+    @Override
+    public int getTimesChanged() {
+        return super.getTimesChanged();
+    }
+
+    @Override
+    public boolean stillValid(Player player) {
+        return true;
+    }
+
+    @Override
+    public boolean contains(ItemStack itemstack) {
+        return contains(itemStack -> itemStack.isEmpty() && itemStack.sameItem(itemstack));
+    }
+
+    @Override
+    public boolean contains(Tag<Item> tag) {
+        return contains(itemStack -> !itemStack.isEmpty() && itemStack.is(tag));
+    }
+
+    @Override
+    public void replaceWith(Inventory inventory) {
+        Function<Integer, ItemStack> getter;
+
+        if (inventory instanceof SpecialPlayerInventory specialPlayerInventory) {
+            getter = specialPlayerInventory::getRawItem;
+        } else {
+            getter = inventory::getItem;
+        }
+
+        for(int i = 0; i < this.getContainerSize(); ++i) {
+            this.setRawItem(i, getter.apply(i));
+        }
+
+        this.selected = inventory.selected;
+    }
+
+    @Override
+    public void clearContent() {
+        for (NonNullList<ItemStack> compartment : this.compartments) {
+            compartment.clear();
+        }
+    }
+
+    @Override
+    public void fillStackedContents(StackedContents stackedContents) {
+        for (ItemStack itemstack : this.items) {
+            stackedContents.accountSimpleStack(itemstack);
+        }
+    }
+
+    @Override
+    public ItemStack removeFromSelected(boolean dropWholeStack) {
+        ItemStack itemstack = this.getSelected();
+        return itemstack.isEmpty() ? ItemStack.EMPTY : this.removeItem(this.selected, dropWholeStack ? itemstack.getCount() : 1);
+    }
+
+}

plugin/pom.xml

@@ -1,28 +1,48 @@
+<!--
+  ~ Copyright (C) 2011-2021 lishid. All rights reserved.
+  ~
+  ~ This program is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation, version 3.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
+    <artifactId>openinvparent</artifactId>
     <groupId>com.lishid</groupId>
-    <artifactId>openinv</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>4.1.9-SNAPSHOT</version>
   </parent>
 
-  <artifactId>openinvplugin</artifactId>
+  <artifactId>openinvplugincore</artifactId>
   <name>OpenInvPlugin</name>
 
   <dependencies>
     <dependency>
-      <groupId>org.bukkit</groupId>
-      <artifactId>bukkit</artifactId>
-      <!-- Really should use 1.4.5-R1.0, but the InventoryDragEvent doesn't exist. TODO separate module? -->
-      <version>1.11-R0.1-SNAPSHOT</version>
-      <scope>provided</scope>
+      <artifactId>openinvapi</artifactId>
+      <groupId>com.lishid</groupId>
     </dependency>
     <dependency>
-      <groupId>com.lishid</groupId>
-      <artifactId>openinvinternal</artifactId>
-      <version>1.0-SNAPSHOT</version>
+      <artifactId>annotations</artifactId>
+      <groupId>org.jetbrains</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>paper-api</artifactId>
+      <groupId>io.papermc.paper</groupId>
+    </dependency>
+    <dependency>
+      <artifactId>planarwrappers</artifactId>
+      <groupId>com.github.jikoo</groupId>
     </dependency>
   </dependencies>
 
@@ -33,6 +53,15 @@
         <filtering>true</filtering>
       </resource>
     </resources>
+
+    <plugins>
+      <plugin>
+        <artifactId>maven-shade-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+    </plugins>
   </build>
 
-</project>
+</project>

plugin/src/main/java/com/lishid/openinv/OpenInv.java

@@ -1,156 +1,343 @@
 /*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
+ * the Free Software Foundation, version 3.
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 package com.lishid.openinv;
 
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import com.lishid.openinv.commands.ContainerSettingCommand;
+import com.lishid.openinv.commands.OpenInvCommand;
+import com.lishid.openinv.commands.SearchCommand;
+import com.lishid.openinv.internal.IAnySilentContainer;
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import com.lishid.openinv.listeners.InventoryListener;
+import com.lishid.openinv.listeners.PlayerListener;
+import com.lishid.openinv.listeners.PluginListener;
+import com.lishid.openinv.util.Cache;
+import com.lishid.openinv.util.ConfigUpdater;
+import com.lishid.openinv.util.InternalAccessor;
+import com.lishid.openinv.util.LanguageManager;
+import com.lishid.openinv.util.Permissions;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.Callable;
+import java.util.Objects;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
-
-import com.lishid.openinv.commands.AnyChestPluginCommand;
-import com.lishid.openinv.commands.OpenEnderPluginCommand;
-import com.lishid.openinv.commands.OpenInvPluginCommand;
-import com.lishid.openinv.commands.SearchInvPluginCommand;
-import com.lishid.openinv.commands.SilentChestPluginCommand;
-import com.lishid.openinv.internal.IAnySilentContainer;
-import com.lishid.openinv.internal.IInventoryAccess;
-import com.lishid.openinv.internal.IPlayerDataManager;
-import com.lishid.openinv.internal.ISpecialEnderChest;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-import com.lishid.openinv.internal.InternalAccessor;
-import com.lishid.openinv.util.Cache;
-import com.lishid.openinv.util.Function;
-
+import java.util.function.Consumer;
+import net.md_5.bungee.api.ChatMessageType;
+import net.md_5.bungee.api.chat.TextComponent;
 import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
 import org.bukkit.command.PluginCommand;
-import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitRunnable;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Open other player's inventory
- * 
+ *
  * @author lishid
  */
-public class OpenInv extends JavaPlugin {
+public class OpenInv extends JavaPlugin implements IOpenInv {
 
-    private final Map<String, ISpecialPlayerInventory> inventories = new HashMap<String, ISpecialPlayerInventory>();
-    private final Map<String, ISpecialEnderChest> enderChests = new HashMap<String, ISpecialEnderChest>();
-    private final Cache<String, Player> playerCache = new Cache<String, Player>(300000L,
-            new Function<Player>() {
-                @Override
-                public boolean run(Player value) {
-                    String key = playerLoader.getPlayerDataID(value);
-                    return inventories.containsKey(key) && inventories.get(key).isInUse()
-                            || enderChests.containsKey(key) && enderChests.get(key).isInUse();
-                }
+    private final Map<String, ISpecialPlayerInventory> inventories = new HashMap<>();
+    private final Map<String, ISpecialEnderChest> enderChests = new HashMap<>();
+    private final Multimap<String, Class<? extends Plugin>> pluginUsage = HashMultimap.create();
+
+    private final Cache<String, Player> playerCache = new Cache<>(300000L,
+            value -> {
+                String key = OpenInv.this.getPlayerID(value);
+
+                return OpenInv.this.inventories.containsKey(key)
+                        && OpenInv.this.inventories.get(key).isInUse()
+                        || OpenInv.this.enderChests.containsKey(key)
+                        && OpenInv.this.enderChests.get(key).isInUse()
+                        || OpenInv.this.pluginUsage.containsKey(key);
             },
-            new Function<Player>() {
-                @Override
-                public boolean run(Player value) {
-                    String key = playerLoader.getPlayerDataID(value);
+            value -> {
+                String key = OpenInv.this.getPlayerID(value);
 
-                    // Check if inventory is stored, and if it is, remove it and eject all viewers
-                    if (inventories.containsKey(key)) {
-                        Inventory inv = inventories.remove(key).getBukkitInventory();
-                        for (HumanEntity entity : inv.getViewers()) {
-                            entity.closeInventory();
-                        }
+                // Check if inventory is stored, and if it is, remove it and eject all viewers
+                if (OpenInv.this.inventories.containsKey(key)) {
+                    Inventory inv = OpenInv.this.inventories.remove(key).getBukkitInventory();
+                    List<HumanEntity> viewers = new ArrayList<>(inv.getViewers());
+                    for (HumanEntity entity : viewers.toArray(new HumanEntity[0])) {
+                        entity.closeInventory();
                     }
+                }
 
-                    // Check if ender chest is stored, and if it is, remove it and eject all viewers
-                    if (enderChests.containsKey(key)) {
-                        Inventory inv = enderChests.remove(key).getBukkitInventory();
-                        for (HumanEntity entity : inv.getViewers()) {
-                            entity.closeInventory();
-                        }
+                // Check if ender chest is stored, and if it is, remove it and eject all viewers
+                if (OpenInv.this.enderChests.containsKey(key)) {
+                    Inventory inv = OpenInv.this.enderChests.remove(key).getBukkitInventory();
+                    List<HumanEntity> viewers = new ArrayList<>(inv.getViewers());
+                    for (HumanEntity entity : viewers.toArray(new HumanEntity[0])) {
+                        entity.closeInventory();
                     }
+                }
 
-                    if (!OpenInv.this.disableSaving() && !value.isOnline()) {
-                        value.saveData();
-                    }
-                    return true;
+                if (!OpenInv.this.disableSaving() && !value.isOnline()) {
+                    value.saveData();
                 }
             });
 
     private InternalAccessor accessor;
-    private IPlayerDataManager playerLoader;
-    private IInventoryAccess inventoryAccess;
-    private IAnySilentContainer anySilentContainer;
+    private LanguageManager languageManager;
 
-    @Override
-    public void onEnable() {
-        // Get plugin manager
-        PluginManager pm = getServer().getPluginManager();
+    /**
+     * Evicts all viewers lacking cross-world permissions from a Player's inventory.
+     *
+     * @param player the Player
+     */
+    public void changeWorld(final Player player) {
 
-        accessor = new InternalAccessor(this);
-        // Version check
-        if (!accessor.isSupported()) {
-            getLogger().info("Your version of CraftBukkit (" + accessor.getVersion() + ") is not supported.");
-            getLogger().info("Please look for an updated version of OpenInv.");
-            pm.disablePlugin(this);
+        String key = this.getPlayerID(player);
+
+        // Check if the player is cached. If not, neither of their inventories is open.
+        if (!this.playerCache.containsKey(key)) {
             return;
         }
 
-        playerLoader = accessor.newPlayerDataManager();
-        inventoryAccess = accessor.newInventoryAccess();
-        anySilentContainer = accessor.newAnySilentContainer();
-
-        FileConfiguration config = getConfig();
-        boolean dirtyConfig = false;
-        if (!config.isBoolean("NotifySilentChest")) {
-            config.set("NotifySilentChest", true);
-            dirtyConfig = true;
-        }
-        if (!config.isBoolean("NotifyAnyChest")) {
-            config.set("NotifyAnyChest", true);
-            dirtyConfig = true;
-        }
-        if (!config.isBoolean("DisableSaving")) {
-            config.set("DisableSaving", false);
-            dirtyConfig = true;
-        }
-        config.addDefault("NotifySilentChest", true);
-        config.addDefault("NotifyAnyChest", true);
-        config.addDefault("DisableSaving", false);
-        config.options().copyDefaults(true);
-        if (dirtyConfig) {
-            saveConfig();
+        if (this.inventories.containsKey(key)) {
+            kickCrossWorldViewers(player, this.inventories.get(key));
         }
 
-        pm.registerEvents(new OpenInvPlayerListener(this), this);
-        pm.registerEvents(new OpenInvInventoryListener(this), this);
+        if (this.enderChests.containsKey(key)) {
+            kickCrossWorldViewers(player, this.enderChests.get(key));
+        }
+    }
 
-        getCommand("openinv").setExecutor(new OpenInvPluginCommand(this));
-        SearchInvPluginCommand searchInv = new SearchInvPluginCommand();
-        getCommand("searchinv").setExecutor(searchInv);
-        getCommand("searchender").setExecutor(searchInv);
-        getCommand("silentchest").setExecutor(new SilentChestPluginCommand(this));
-        getCommand("anychest").setExecutor(new AnyChestPluginCommand(this));
-        getCommand("openender").setExecutor(new OpenEnderPluginCommand(this));
+    private void kickCrossWorldViewers(Player player, ISpecialInventory inventory) {
+        List<HumanEntity> viewers = new ArrayList<>(inventory.getBukkitInventory().getViewers());
+        for (HumanEntity human : viewers) {
+            // If player has permission or is in the same world, allow continued access
+            // Just in case, also allow null worlds.
+            if (Permissions.CROSSWORLD.hasPermission(human) || Objects.equals(human.getWorld(), player.getWorld())) {
+                continue;
+            }
+            human.closeInventory();
+        }
+    }
 
+    /**
+     * Convert a raw slot number into a player inventory slot number.
+     *
+     * <p>Note that this method is specifically for converting an ISpecialPlayerInventory slot number into a regular
+     * player inventory slot number.
+     *
+     * @param view the open inventory view
+     * @param rawSlot the raw slot in the view
+     * @return the converted slot number
+     */
+    public int convertToPlayerSlot(InventoryView view, int rawSlot) {
+        return this.accessor.getPlayerDataManager().convertToPlayerSlot(view, rawSlot);
+    }
+
+    @Override
+    public boolean disableSaving() {
+        return this.getConfig().getBoolean("settings.disable-saving", false);
+    }
+
+    @NotNull
+    @Override
+    public IAnySilentContainer getAnySilentContainer() {
+        return this.accessor.getAnySilentContainer();
+    }
+
+    @Override
+    public boolean getPlayerAnyChestStatus(@NotNull final OfflinePlayer player) {
+        boolean defaultState = false;
+
+        if (player.isOnline()) {
+            Player onlinePlayer = player.getPlayer();
+            if (onlinePlayer != null) {
+                defaultState = Permissions.ANY_DEFAULT.hasPermission(onlinePlayer);
+            }
+        }
+
+        return this.getConfig().getBoolean("toggles.any-chest." + this.getPlayerID(player), defaultState);
+    }
+
+    @Override
+    public boolean getPlayerSilentChestStatus(@NotNull final OfflinePlayer offline) {
+        boolean defaultState = false;
+
+        if (offline.isOnline()) {
+            Player onlinePlayer = offline.getPlayer();
+            if (onlinePlayer != null) {
+                defaultState = Permissions.SILENT_DEFAULT.hasPermission(onlinePlayer);
+            }
+        }
+
+        return this.getConfig().getBoolean("toggles.silent-chest." + this.getPlayerID(offline), defaultState);
+    }
+
+    @NotNull
+    @Override
+    public ISpecialEnderChest getSpecialEnderChest(@NotNull final Player player, final boolean online)
+            throws InstantiationException {
+        String id = this.getPlayerID(player);
+        if (this.enderChests.containsKey(id)) {
+            return this.enderChests.get(id);
+        }
+        ISpecialEnderChest inv = this.accessor.newSpecialEnderChest(player, online);
+        this.enderChests.put(id, inv);
+        this.playerCache.put(id, player);
+        return inv;
+    }
+
+    @NotNull
+    @Override
+    public ISpecialPlayerInventory getSpecialInventory(@NotNull final Player player, final boolean online)
+            throws InstantiationException {
+        String id = this.getPlayerID(player);
+        if (this.inventories.containsKey(id)) {
+            return this.inventories.get(id);
+        }
+        ISpecialPlayerInventory inv = this.accessor.newSpecialPlayerInventory(player, online);
+        this.inventories.put(id, inv);
+        this.playerCache.put(id, player);
+        return inv;
+    }
+
+    @Override
+    public boolean isSupportedVersion() {
+        return this.accessor != null && this.accessor.isSupported();
+    }
+
+    @Override
+    public @Nullable Player loadPlayer(@NotNull final OfflinePlayer offline) {
+
+        String key = this.getPlayerID(offline);
+        if (this.playerCache.containsKey(key)) {
+            return this.playerCache.get(key);
+        }
+
+        Player player = offline.getPlayer();
+        if (player != null) {
+            this.playerCache.put(key, player);
+            return player;
+        }
+
+        if (!this.isSupportedVersion()) {
+            return null;
+        }
+
+        if (Bukkit.isPrimaryThread()) {
+            return this.accessor.getPlayerDataManager().loadPlayer(offline);
+        }
+
+        Future<Player> future = Bukkit.getScheduler().callSyncMethod(this,
+                () -> OpenInv.this.accessor.getPlayerDataManager().loadPlayer(offline));
+
+        try {
+            player = future.get();
+        } catch (InterruptedException | ExecutionException e) {
+            e.printStackTrace();
+            return null;
+        }
+
+        if (player != null) {
+            this.playerCache.put(key, player);
+        }
+
+        return player;
+    }
+
+    @Override
+    public @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory) {
+        return this.accessor.getPlayerDataManager().openInventory(player, inventory);
+    }
+
+    public void sendMessage(@NotNull CommandSender sender, @NotNull String key) {
+        String message = this.languageManager.getValue(key, getLocale(sender));
+
+        if (message != null && !message.isEmpty()) {
+            sender.sendMessage(message);
+        }
+    }
+
+    public void sendMessage(@NotNull CommandSender sender, @NotNull String key, String... replacements) {
+        String message = this.languageManager.getValue(key, getLocale(sender), replacements);
+
+        if (message != null && !message.isEmpty()) {
+            sender.sendMessage(message);
+        }
+    }
+
+    public void sendSystemMessage(@NotNull Player player, @NotNull String key) {
+        this.sendSystemMessage(player, key, new String[0]);
+    }
+
+    public void sendSystemMessage(@NotNull Player player, @NotNull String key, String... replacements) {
+        String message = this.languageManager.getValue(key, getLocale(player));
+
+        if (message == null) {
+            return;
+        }
+
+        int newline = message.indexOf('\n');
+        if (newline != -1) {
+            // No newlines in action bar chat.
+            message = message.substring(0, newline);
+        }
+
+        if (message.isEmpty()) {
+            return;
+        }
+
+        player.spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText(message));
+    }
+
+    public @Nullable String getLocalizedMessage(@NotNull CommandSender sender, @NotNull String key) {
+        return this.languageManager.getValue(key, getLocale(sender));
+    }
+
+    public @Nullable String getLocalizedMessage(@NotNull CommandSender sender, @NotNull String key, String... replacements) {
+        return this.languageManager.getValue(key, getLocale(sender), replacements);
+    }
+
+    private @NotNull String getLocale(@NotNull CommandSender sender) {
+        if (sender instanceof Player) {
+            return ((Player) sender).getLocale();
+        } else {
+            return this.getConfig().getString("settings.locale", "en_us");
+        }
+    }
+
+    public int getSearchPollsPerTick() {
+        return this.getConfig().getInt("settings.search.polls-per-tick", 5);
+    }
+
+    public int getSearchResultsMax() {
+        return this.getConfig().getInt("settings.search.max-results", 40);
     }
 
     @Override
@@ -160,309 +347,146 @@ public class OpenInv extends JavaPlugin {
             return;
         }
 
-        this.playerCache.invalidateAll();
+        if (this.isSupportedVersion()) {
+            this.playerCache.invalidateAll();
+        }
+    }
+
+    @Override
+    public void onEnable() {
+
+        // Save default configuration if not present.
+        this.saveDefaultConfig();
+
+        // Get plugin manager
+        PluginManager pm = this.getServer().getPluginManager();
+
+        this.accessor = new InternalAccessor(this);
+
+        this.languageManager = new LanguageManager(this, "en_us");
+
+        // Version check
+        if (this.accessor.isSupported()) {
+            // Update existing configuration. May require internal access.
+            new ConfigUpdater(this).checkForUpdates();
+
+            // Register listeners
+            pm.registerEvents(new PlayerListener(this), this);
+            pm.registerEvents(new PluginListener(this), this);
+            pm.registerEvents(new InventoryListener(this), this);
+
+            // Register commands to their executors
+            this.setCommandExecutor(new OpenInvCommand(this), "openinv", "openender");
+            this.setCommandExecutor(new SearchCommand(this), "search");
+            this.setCommandExecutor(new ContainerSettingCommand(this), "silentcontainer", "anycontainer");
+
+        } else {
+            this.sendVersionError(this.getLogger()::warning);
+        }
+
+    }
+
+    private void sendVersionError(Consumer<String> messageMethod) {
+        messageMethod.accept("Your server version (" + this.accessor.getVersion() + ") is not supported.");
+        messageMethod.accept("Please obtain an appropriate version here: " + accessor.getReleasesLink());
+    }
+
+    private void setCommandExecutor(CommandExecutor executor, String... commands) {
+        for (String commandName : commands) {
+            PluginCommand command = this.getCommand(commandName);
+            if (command != null) {
+                command.setExecutor(executor);
+            }
+        }
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (!this.accessor.isSupported()) {
+            this.sendVersionError(sender::sendMessage);
+            return true;
+        }
+        return false;
+    }
+
+    public void releaseAllPlayers(final Plugin plugin) {
+        Iterator<Map.Entry<String, Class<? extends Plugin>>> iterator = this.pluginUsage.entries().iterator();
+
+        if (!iterator.hasNext()) {
+            return;
+        }
+
+        for (Map.Entry<String, Class<? extends Plugin>> entry = iterator.next(); iterator.hasNext(); entry = iterator.next()) {
+            if (entry.getValue().equals(plugin.getClass())) {
+                iterator.remove();
+            }
+        }
+    }
+
+    @Override
+    public void releasePlayer(@NotNull final Player player, @NotNull final Plugin plugin) {
+        String key = this.getPlayerID(player);
+
+        if (!this.pluginUsage.containsEntry(key, plugin.getClass())) {
+            return;
+        }
+
+        this.pluginUsage.remove(key, plugin.getClass());
+    }
+
+    @Override
+    public void retainPlayer(@NotNull final Player player, @NotNull final Plugin plugin) {
+        String key = this.getPlayerID(player);
+
+        if (this.pluginUsage.containsEntry(key, plugin.getClass())) {
+            return;
+        }
+
+        this.pluginUsage.put(key, plugin.getClass());
+    }
+
+    @Override
+    public void setPlayerAnyChestStatus(@NotNull final OfflinePlayer offline, final boolean status) {
+        this.getConfig().set("toggles.any-chest." + this.getPlayerID(offline), status);
+        this.saveConfig();
     }
 
     /**
-     * Checks if the server version is supported by OpenInv.
-     * 
-     * @return true if the server version is supported
-     */
-    public boolean isSupportedVersion() {
-        return accessor.isSupported();
-    }
-
-    /**
-     * Gets the active IInventoryAccess implementation. May return null if the server version is
-     * unsupported.
-     * 
-     * @return the IInventoryAccess
-     */
-    public IInventoryAccess getInventoryAccess() {
-        return this.inventoryAccess;
-    }
-
-    /**
-     * Gets the active ISilentContainer implementation. May return null if the server version is
-     * unsupported.
-     * 
-     * @return the ISilentContainer
-     */
-    public IAnySilentContainer getAnySilentContainer() {
-        return this.anySilentContainer;
-    }
-
-    /**
-     * Gets an ISpecialPlayerInventory for the given Player.
-     * 
+     * Method for handling a Player going offline.
+     *
      * @param player the Player
-     * @param online true if the Player is currently online
-     * @return the ISpecialPlayerInventory
+     * @throws IllegalStateException if the server version is unsupported
      */
-    public ISpecialPlayerInventory getInventory(Player player, boolean online) {
-        String id = playerLoader.getPlayerDataID(player);
-        if (inventories.containsKey(id)) {
-            return inventories.get(id);
-        }
-        ISpecialPlayerInventory inv = accessor.newSpecialPlayerInventory(player, online);
-        inventories.put(id, inv);
-        playerCache.put(id, player);
-        return inv;
-    }
+    public void setPlayerOffline(final Player player) {
 
-    /**
-     * Gets an ISpecialEnderChest for the given Player.
-     * 
-     * @param player the Player
-     * @param online true if the Player is currently online
-     * @return the ISpecialEnderChest
-     */
-    public ISpecialEnderChest getEnderChest(Player player, boolean online) {
-        String id = playerLoader.getPlayerDataID(player);
-        if (enderChests.containsKey(id)) {
-            return enderChests.get(id);
-        }
-        ISpecialEnderChest inv = accessor.newSpecialEnderChest(player, online);
-        enderChests.put(id, inv);
-        playerCache.put(id, player);
-        return inv;
-    }
+        String key = this.getPlayerID(player);
 
-    /**
-     * Forcibly unload a cached Player's data.
-     * 
-     * @param player the OfflinePlayer to unload
-     */
-    public void unload(OfflinePlayer player) {
-        this.playerCache.invalidate(this.playerLoader.getPlayerDataID(player));
-    }
-
-    /**
-     * Check the configuration value for whether or not OpenInv saves player data when unloading
-     * players. This is exclusively for users who do not allow editing of inventories, only viewing,
-     * and wish to prevent any possibility of bugs such as lishid#40. If true, OpenInv will not ever
-     * save any edits made to players.
-     * 
-     * @return false unless configured otherwise
-     */
-    public boolean disableSaving() {
-        return getConfig().getBoolean("DisableSaving", false);
-    }
-
-    /**
-     * Check the configuration value for whether or not OpenInv displays a notification to the user
-     * when a container is activated with SilentChest.
-     * 
-     * @return true unless configured otherwise
-     */
-    public boolean notifySilentChest() {
-        return getConfig().getBoolean("NotifySilentChest", true);
-    }
-
-    /**
-     * Check the configuration value for whether or not OpenInv displays a notification to the user
-     * when a container is activated with AnyChest.
-     * 
-     * @return true unless configured otherwise
-     */
-    public boolean notifyAnyChest() {
-        return getConfig().getBoolean("NotifyAnyChest", true);
-    }
-
-    /**
-     * Gets a player's SilentChest setting.
-     * 
-     * @param player the OfflinePlayer
-     * @return true if SilentChest is enabled
-     */
-    public boolean getPlayerSilentChestStatus(OfflinePlayer player) {
-        return getConfig().getBoolean("SilentChest." + playerLoader.getPlayerDataID(player) + ".toggle", false);
-    }
-
-    /**
-     * Sets a player's SilentChest setting.
-     * 
-     * @param player the OfflinePlayer
-     * @param status the status
-     */
-    public void setPlayerSilentChestStatus(OfflinePlayer player, boolean status) {
-        getConfig().set("SilentChest." + playerLoader.getPlayerDataID(player) + ".toggle", status);
-        saveConfig();
-    }
-
-    /**
-     * Gets the provided player's AnyChest setting.
-     * 
-     * @param player the OfflinePlayer
-     * @return true if AnyChest is enabled
-     */
-    public boolean getPlayerAnyChestStatus(OfflinePlayer player) {
-        return getConfig().getBoolean("AnyChest." + playerLoader.getPlayerDataID(player) + ".toggle", true);
-    }
-
-    /**
-     * Sets a player's AnyChest setting.
-     * 
-     * @param player the OfflinePlayer
-     * @param status the status
-     */
-    public void setPlayerAnyChestStatus(OfflinePlayer player, boolean status) {
-        getConfig().set("AnyChest." + playerLoader.getPlayerDataID(player) + ".toggle", status);
-        saveConfig();
-    }
-
-    /**
-     * Get an OfflinePlayer by name.
-     * <p>
-     * Note: This method is potentially very heavily blocking. It should not ever be called on the
-     * main thread, and if it is, a stack trace will be displayed alerting server owners to the
-     * call.
-     * 
-     * @param name the name of the Player
-     * @return the OfflinePlayer with the closest matching name or null if no players have ever logged in
-     */
-    public OfflinePlayer matchPlayer(String name) {
-
-        // Warn if called on the main thread - if we resort to searching offline players, this may take several seconds.
-        if (getServer().isPrimaryThread()) {
-            getLogger().warning("Call to OpenInv#matchPlayer made on the main thread!");
-            getLogger().warning("This can cause the server to hang, potentially severely.");
-            getLogger().warning("Trace:");
-            for (StackTraceElement element : new Throwable().fillInStackTrace().getStackTrace()) {
-                getLogger().warning(element.toString());
-            }
+        // Check if the player is cached. If not, neither of their inventories is open.
+        if (!this.playerCache.containsKey(key)) {
+            return;
         }
 
-        // Ensure name is valid if server is in online mode to avoid unnecessary searching
-        if (getServer().getOnlineMode() && !name.matches("[a-zA-Z0-9_]{3,16}")) {
-            return null;
+        // Replace stored player with our own version
+        this.playerCache.put(key, this.accessor.getPlayerDataManager().inject(player));
+
+        if (this.inventories.containsKey(key)) {
+            this.inventories.get(key).setPlayerOffline();
         }
 
-        OfflinePlayer player = getServer().getPlayerExact(name);
-
-        if (player != null) {
-            return player;
+        if (this.enderChests.containsKey(key)) {
+            this.enderChests.get(key).setPlayerOffline();
         }
-
-        player = getServer().getOfflinePlayer(name);
-
-        /*
-         * Compatibility: Pre-UUID, getOfflinePlayer always returns an OfflinePlayer. Post-UUID,
-         * getOfflinePlayer will return null if no matching player is found. To preserve
-         * compatibility, only return the player if they have played before. Ignoring current online
-         * status is fine, they'd have been found by getPlayerExact otherwise.
-         */
-        if (player != null && player.hasPlayedBefore()) {
-            return player;
-        }
-
-        player = getServer().getPlayer(name);
-
-        if (player != null) {
-            return player;
-        }
-
-        int bestMatch = Integer.MAX_VALUE;
-        for (OfflinePlayer offline : getServer().getOfflinePlayers()) {
-            if (offline.getName() == null) {
-                // Loaded by UUID only, name has never been looked up.
-                continue;
-            }
-
-            // Compatibility: Lang3 is only bundled with 1.8+
-            int currentMatch = org.apache.commons.lang.StringUtils.getLevenshteinDistance(name, offline.getName());
-
-            if (currentMatch == 0) {
-                return offline;
-            }
-
-            if (currentMatch < bestMatch) {
-                bestMatch = currentMatch;
-                player = offline;
-            }
-        }
-
-        // Only null if no players have played ever, otherwise even the worst match will do.
-        return player;
-    }
-
-    /**
-     * Load a Player from an OfflinePlayer. May return null under some circumstances.
-     * 
-     * @param offline the OfflinePlayer to load a Player for
-     * @return the Player
-     */
-    public Player loadPlayer(final OfflinePlayer offline) {
-
-        if (offline == null) {
-            return null;
-        }
-
-        String key = this.playerLoader.getPlayerDataID(offline);
-        if (this.playerCache.containsKey(key)) {
-            return this.playerCache.get(key);
-        }
-
-        Player loaded;
-
-        if (offline.isOnline()) {
-            loaded = offline.getPlayer();
-            this.playerCache.put(key, loaded);
-            return loaded;
-        }
-
-        if (Bukkit.isPrimaryThread()) {
-            return this.playerLoader.loadPlayer(offline);
-        }
-
-        Future<Player> future = Bukkit.getScheduler().callSyncMethod(this,
-                new Callable<Player>() {
-                    @Override
-                    public Player call() throws Exception {
-                        return playerLoader.loadPlayer(offline);
-                    }
-                });
-
-        int ticks = 0;
-        while (!future.isDone() && !future.isCancelled() && ticks < 10) {
-            ++ticks;
-            try {
-                Thread.sleep(50L);
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-                return null;
-            }
-        }
-
-        if (!future.isDone() || future.isCancelled()) {
-            return null;
-        }
-
-        try {
-            loaded = future.get();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-            return null;
-        } catch (ExecutionException e) {
-            e.printStackTrace();
-            return null;
-        }
-
-        if (loaded != null) {
-            this.playerCache.put(key, loaded);
-        }
-
-        return loaded;
     }
 
     /**
      * Method for handling a Player coming online.
-     * 
+     *
      * @param player the Player
+     * @throws IllegalStateException if the server version is unsupported
      */
     public void setPlayerOnline(final Player player) {
 
-        String key = this.playerLoader.getPlayerDataID(player);
+        String key = this.getPlayerID(player);
 
         // Check if the player is cached. If not, neither of their inventories is open.
         if (!this.playerCache.containsKey(key)) {
@@ -488,76 +512,18 @@ public class OpenInv extends JavaPlugin {
         }
     }
 
-    /**
-     * Method for handling a Player going offline.
-     * 
-     * @param player the Player
-     */
-    public void setPlayerOffline(final Player player) {
-
-        String key = this.playerLoader.getPlayerDataID(player);
-
-        // Check if the player is cached. If not, neither of their inventories is open.
-        if (!this.playerCache.containsKey(key)) {
-            return;
-        }
-
-        if (this.inventories.containsKey(key)) {
-            this.inventories.get(key).setPlayerOffline();
-        }
-
-        if (this.enderChests.containsKey(key)) {
-            this.enderChests.get(key).setPlayerOffline();
-        }
-    }
-
-    /**
-     * Evicts all viewers lacking cross-world permissions from a Player's inventory.
-     * 
-     * @param player the Player
-     */
-    public void changeWorld(final Player player) {
-
-        String key = this.playerLoader.getPlayerDataID(player);
-
-        // Check if the player is cached. If not, neither of their inventories is open.
-        if (!this.playerCache.containsKey(key)) {
-            return;
-        }
-
-        if (this.inventories.containsKey(key)) {
-            Iterator<HumanEntity> iterator = this.inventories.get(key).getBukkitInventory().getViewers().iterator();
-            while (iterator.hasNext()) {
-                HumanEntity human = iterator.next();
-                // If player has permission or is in the same world, allow continued access
-                // Just in case, also allow null worlds.
-                if (Permissions.CROSSWORLD.hasPermission(human) || human.getWorld() == null
-                        || human.getWorld().equals(player.getWorld())) {
-                    continue;
-                }
-                human.closeInventory();
-            }
-        }
-
-        if (this.enderChests.containsKey(key)) {
-            Iterator<HumanEntity> iterator = this.enderChests.get(key).getBukkitInventory().getViewers().iterator();
-            while (iterator.hasNext()) {
-                HumanEntity human = iterator.next();
-                if (Permissions.CROSSWORLD.hasPermission(human) || human.getWorld() == null
-                        || human.getWorld().equals(player.getWorld())) {
-                    continue;
-                }
-                human.closeInventory();
-            }
-        }
+    @Override
+    public void setPlayerSilentChestStatus(@NotNull final OfflinePlayer offline, final boolean status) {
+        this.getConfig().set("toggles.silent-chest." + this.getPlayerID(offline), status);
+        this.saveConfig();
     }
 
     /**
      * Displays all applicable help for OpenInv commands.
-     * 
+     *
      * @param player the Player to help
      */
-    public void showHelp(Player player) {
+    public void showHelp(final Player player) {
         // Get registered commands
         for (String commandName : this.getDescription().getCommands().keySet()) {
             PluginCommand command = this.getCommand(commandName);
@@ -587,4 +553,9 @@ public class OpenInv extends JavaPlugin {
         }
     }
 
+    @Override
+    public void unload(@NotNull final OfflinePlayer offline) {
+        this.playerCache.invalidate(this.getPlayerID(offline));
+    }
+
 }

plugin/src/main/java/com/lishid/openinv/OpenInvInventoryListener.java

@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv;
-
-import org.bukkit.entity.HumanEntity;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.inventory.InventoryClickEvent;
-import org.bukkit.event.inventory.InventoryDragEvent;
-import org.bukkit.event.player.PlayerChangedWorldEvent;
-import org.bukkit.inventory.Inventory;
-
-public class OpenInvInventoryListener implements Listener {
-
-    private final OpenInv plugin;
-
-    public OpenInvInventoryListener(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
-    public void onInventoryClick(InventoryClickEvent event) {
-        if (cancelInteract(event.getWhoClicked(), event.getInventory())) {
-            event.setCancelled(true);
-        }
-    }
-
-    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
-    public void onInventoryDrag(InventoryDragEvent event) {
-        if (cancelInteract(event.getWhoClicked(), event.getInventory())) {
-            event.setCancelled(true);
-        }
-    }
-
-    private boolean cancelInteract(HumanEntity entity, Inventory inventory) {
-        return plugin.getInventoryAccess().isSpecialPlayerInventory(inventory)
-                && !Permissions.EDITINV.hasPermission(entity)
-                || plugin.getInventoryAccess().isSpecialEnderChest(inventory)
-                        && !Permissions.EDITENDER.hasPermission(entity);
-    }
-
-    @EventHandler
-    public void onWorldChange(PlayerChangedWorldEvent event) {
-        plugin.changeWorld(event.getPlayer());
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/OpenInvPlayerListener.java

@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv;
-
-import org.bukkit.entity.Player;
-import org.bukkit.event.Event.Result;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.block.Action;
-import org.bukkit.event.player.PlayerInteractEvent;
-import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
-
-public class OpenInvPlayerListener implements Listener {
-
-    private final OpenInv plugin;
-
-    public OpenInvPlayerListener(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    @EventHandler(priority = EventPriority.MONITOR)
-    public void onPlayerJoin(final PlayerJoinEvent event) {
-        plugin.setPlayerOnline(event.getPlayer());
-    }
-
-    @EventHandler(priority = EventPriority.MONITOR)
-    public void onPlayerQuit(PlayerQuitEvent event) {
-        plugin.setPlayerOffline(event.getPlayer());
-    }
-
-    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
-    public void onPlayerInteract(PlayerInteractEvent event) {
-        if (event.getAction() != Action.RIGHT_CLICK_BLOCK || event.getPlayer().isSneaking()
-                || event.useInteractedBlock() == Result.DENY
-                || !plugin.getAnySilentContainer().isAnySilentContainer(event.getClickedBlock())) {
-            return;
-        }
-
-        Player player = event.getPlayer();
-        boolean anychest = Permissions.ANYCHEST.hasPermission(player) && plugin.getPlayerAnyChestStatus(player);
-        boolean needsAnyChest = plugin.getAnySilentContainer().isAnyContainerNeeded(player, event.getClickedBlock());
-
-        if (!anychest && needsAnyChest) {
-            return;
-        }
-
-        boolean silentchest = Permissions.SILENT.hasPermission(player) && plugin.getPlayerSilentChestStatus(player);
-
-        // If anychest or silentchest is active
-        if ((anychest || silentchest) && plugin.getAnySilentContainer().activateContainer(player, silentchest, event.getClickedBlock())) {
-            if (silentchest && plugin.notifySilentChest() && needsAnyChest && plugin.notifyAnyChest()) {
-                player.sendMessage("You are opening a blocked container silently.");
-            } else if (silentchest && plugin.notifySilentChest()) {
-                player.sendMessage("You are opening a container silently.");
-            } else if (needsAnyChest && plugin.notifyAnyChest()) {
-                player.sendMessage("You are opening a blocked container.");
-            }
-            event.setCancelled(true);
-        }
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/Permissions.java

@@ -1,38 +0,0 @@
-package com.lishid.openinv;
-
-import org.bukkit.permissions.Permissible;
-
-public enum Permissions {
-
-    OPENINV("OpenInv.openinv"),
-    OVERRIDE("OpenInv.override"),
-    EXEMPT("OpenInv.exempt"),
-    CROSSWORLD("OpenInv.crossworld"),
-    SILENT("OpenInv.silent"),
-    ANYCHEST("OpenInv.anychest"),
-    ENDERCHEST("OpenInv.openender"),
-    ENDERCHEST_ALL("OpenInv.openenderall"),
-    SEARCH("OpenInv.search"),
-    EDITINV("OpenInv.editinv"),
-    EDITENDER("OpenInv.editender"),
-    OPENSELF("OpenInv.openself");
-
-    private final String permission;
-
-    private Permissions(String permission) {
-        this.permission = permission;
-    }
-
-    public boolean hasPermission(Permissible permissible) {
-        String[] parts = permission.split("\\.");
-        String perm = "";
-        for (int i = 0; i < parts.length; i++) {
-            if (permissible.hasPermission(perm + "*")) {
-                return true;
-            }
-            perm += parts[i] + ".";
-        }
-        return permissible.hasPermission(permission);
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/commands/AnyChestPluginCommand.java

@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.commands;
-
-import org.bukkit.ChatColor;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-
-import com.lishid.openinv.OpenInv;
-
-public class AnyChestPluginCommand implements CommandExecutor {
-
-    private final OpenInv plugin;
-
-    public AnyChestPluginCommand(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.RED + "You can't use this from the console.");
-            return true;
-        }
-
-        Player player = (Player) sender;
-
-        if (args.length > 0 && args[0].equalsIgnoreCase("check")) {
-            sender.sendMessage("AnyChest is " + (plugin.getPlayerAnyChestStatus(player) ? "ON" : "OFF") + ".");
-            return true;
-        }
-
-        plugin.setPlayerAnyChestStatus(player, !plugin.getPlayerAnyChestStatus(player));
-        sender.sendMessage("AnyChest is now " + (plugin.getPlayerAnyChestStatus(player) ? "ON" : "OFF") + ".");
-
-        return true;
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/commands/ContainerSettingCommand.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.util.TabCompleter;
+import java.util.Collections;
+import java.util.List;
+import java.util.function.BiConsumer;
+import java.util.function.Predicate;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+public class ContainerSettingCommand implements TabExecutor {
+
+    private final OpenInv plugin;
+
+    public ContainerSettingCommand(final OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (!(sender instanceof Player)) {
+            plugin.sendMessage(sender, "messages.error.consoleUnsupported");
+            return true;
+        }
+
+        Player player = (Player) sender;
+        boolean any = command.getName().startsWith("any");
+        Predicate<Player> getSetting = any ? plugin::getPlayerAnyChestStatus : plugin::getPlayerSilentChestStatus;
+        BiConsumer<OfflinePlayer, Boolean> setSetting = any ? plugin::setPlayerAnyChestStatus : plugin::setPlayerSilentChestStatus;
+
+        if (args.length > 0) {
+            args[0] = args[0].toLowerCase();
+
+            if (args[0].equals("on")) {
+                setSetting.accept(player, true);
+            } else if (args[0].equals("off")) {
+                setSetting.accept(player, false);
+            } else if (!args[0].equals("check")) {
+                // Invalid argument, show usage.
+                return false;
+            }
+
+        } else {
+            setSetting.accept(player, !getSetting.test(player));
+        }
+
+        String onOff = plugin.getLocalizedMessage(player, getSetting.test(player) ? "messages.info.on" : "messages.info.off");
+        if (onOff == null) {
+            onOff = String.valueOf(getSetting.test(player));
+        }
+
+        plugin.sendMessage(sender, "messages.info.settingState","%setting%", any ? "AnyContainer" : "SilentContainer", "%state%", onOff);
+
+        return true;
+    }
+
+    @Override
+    public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (!command.testPermissionSilent(sender) || args.length != 1) {
+            return Collections.emptyList();
+        }
+
+        return TabCompleter.completeString(args[0], new String[] {"check", "on", "off"});
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/OpenEnderPluginCommand.java

@@ -1,141 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.commands;
-
-import java.util.HashMap;
-
-import com.lishid.openinv.OpenInv;
-import com.lishid.openinv.Permissions;
-import com.lishid.openinv.internal.ISpecialEnderChest;
-
-import org.bukkit.ChatColor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.scheduler.BukkitRunnable;
-
-public class OpenEnderPluginCommand implements CommandExecutor {
-
-    private final OpenInv plugin;
-    private final HashMap<Player, String> openEnderHistory = new HashMap<Player, String>();
-
-    public OpenEnderPluginCommand(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    @Override
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.RED + "You can't use this from the console.");
-            return true;
-        }
-
-        if (args.length > 0 && args[0].equalsIgnoreCase("?")) {
-            plugin.showHelp((Player) sender);
-            return true;
-        }
-
-        final Player player = (Player) sender;
-
-        // History management
-        String history = openEnderHistory.get(player);
-
-        if (history == null || history == "") {
-            history = player.getName();
-            openEnderHistory.put(player, history);
-        }
-
-        final String name;
-
-        // Read from history if target is not named
-        if (args.length < 1) {
-            name = history;
-        } else {
-            name = args[0];
-        }
-
-        new BukkitRunnable() {
-            @Override
-            public void run() {
-                final OfflinePlayer offlinePlayer = plugin.matchPlayer(name);
-
-                if (offlinePlayer == null || !offlinePlayer.hasPlayedBefore() && !offlinePlayer.isOnline()) {
-                    player.sendMessage(ChatColor.RED + "Player not found!");
-                    return;
-                }
-
-                new BukkitRunnable() {
-                    @Override
-                    public void run() {
-                        if (!player.isOnline()) {
-                            return;
-                        }
-                        openInventory(player, offlinePlayer);
-                    }
-                }.runTask(plugin);
-
-            }
-        }.runTaskAsynchronously(plugin);
-
-        return true;
-    }
-
-    private void openInventory(Player player, OfflinePlayer target) {
-
-        Player onlineTarget;
-        boolean online = target.isOnline();
-
-        if (!online) {
-            // Try loading the player's data
-            onlineTarget = plugin.loadPlayer(target);
-
-            if (onlineTarget == null) {
-                player.sendMessage(ChatColor.RED + "Player not found!");
-                return;
-            }
-        } else {
-            onlineTarget = target.getPlayer();
-        }
-
-        if (!onlineTarget.equals(player)) {
-            if (!Permissions.ENDERCHEST_ALL.hasPermission(player)) {
-                player.sendMessage(ChatColor.RED + "You do not have permission to access other players' enderchests.");
-                return;
-            }
-            if (!Permissions.CROSSWORLD.hasPermission(player) && !player.getWorld().equals(onlineTarget.getWorld())) {
-                player.sendMessage(ChatColor.RED + onlineTarget.getDisplayName() + " is not in your world!");
-                return;
-            }
-            if (!Permissions.OVERRIDE.hasPermission(player) && Permissions.EXEMPT.hasPermission(onlineTarget)) {
-                player.sendMessage(ChatColor.RED + onlineTarget.getDisplayName() + "'s inventory is protected!");
-                return;
-            }
-        }
-
-        // Record the target
-        openEnderHistory.put(player, onlineTarget.getName());
-
-        // Create the inventory
-        ISpecialEnderChest chest = plugin.getEnderChest(onlineTarget, online);
-
-        // Open the inventory
-        player.openInventory(chest.getBukkitInventory());
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/commands/OpenInvCommand.java

@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.ISpecialInventory;
+import com.lishid.openinv.util.Permissions;
+import com.lishid.openinv.util.TabCompleter;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.jetbrains.annotations.NotNull;
+
+public class OpenInvCommand implements TabExecutor {
+
+    private final OpenInv plugin;
+    private final HashMap<Player, String> openInvHistory = new HashMap<>();
+    private final HashMap<Player, String> openEnderHistory = new HashMap<>();
+
+    public OpenInvCommand(final OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public boolean onCommand(@NotNull final CommandSender sender, @NotNull final Command command, @NotNull final String label, @NotNull final String[] args) {
+        if (!(sender instanceof Player)) {
+            plugin.sendMessage(sender, "messages.error.consoleUnsupported");
+            return true;
+        }
+
+        if (args.length > 0 && (args[0].equalsIgnoreCase("help") || args[0].equals("?"))) {
+            this.plugin.showHelp((Player) sender);
+            return true;
+        }
+
+        final Player player = (Player) sender;
+        final boolean openinv = command.getName().equals("openinv");
+
+        // History management
+        String history = (openinv ? this.openInvHistory : this.openEnderHistory).get(player);
+
+        if (history == null || history.isEmpty()) {
+            history = player.getName();
+            (openinv ? this.openInvHistory : this.openEnderHistory).put(player, history);
+        }
+
+        final String name;
+
+        // Read from history if target is not named
+        if (args.length < 1) {
+            name = history;
+        } else {
+            name = args[0];
+        }
+
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                final OfflinePlayer offlinePlayer = OpenInvCommand.this.plugin.matchPlayer(name);
+
+                if (offlinePlayer == null || !offlinePlayer.hasPlayedBefore() && !offlinePlayer.isOnline()) {
+                    plugin.sendMessage(player, "messages.error.invalidPlayer");
+                    return;
+                }
+
+                new BukkitRunnable() {
+                    @Override
+                    public void run() {
+                        if (!player.isOnline()) {
+                            return;
+                        }
+                        OpenInvCommand.this.openInventory(player, offlinePlayer, openinv);
+                    }
+                }.runTask(OpenInvCommand.this.plugin);
+
+            }
+        }.runTaskAsynchronously(this.plugin);
+
+        return true;
+    }
+
+    private void openInventory(final Player player, final OfflinePlayer target, boolean openinv) {
+        Player onlineTarget;
+        boolean online = target.isOnline();
+
+        if (!online) {
+            if (Permissions.OPENOFFLINE.hasPermission(player)) {
+                // Try loading the player's data
+                onlineTarget = this.plugin.loadPlayer(target);
+            } else {
+                plugin.sendMessage(player, "messages.error.permissionPlayerOffline");
+                return;
+            }
+        } else {
+            if (Permissions.OPENONLINE.hasPermission(player)) {
+                onlineTarget = target.getPlayer();
+            } else {
+                plugin.sendMessage(player, "messages.error.permissionPlayerOnline");
+                return;
+            }
+        }
+
+        if (onlineTarget == null) {
+            plugin.sendMessage(player, "messages.error.invalidPlayer");
+            return;
+        }
+
+        // Permissions checks
+        if (onlineTarget.equals(player)) {
+            // Inventory: Additional permission required to open own inventory
+            if (openinv && !Permissions.OPENSELF.hasPermission(player)) {
+                plugin.sendMessage(player, "messages.error.permissionOpenSelf");
+                return;
+            }
+        } else {
+            // Enderchest: Additional permission required to open others' ender chests
+            if (!openinv && !Permissions.ENDERCHEST_ALL.hasPermission(player)) {
+                plugin.sendMessage(player, "messages.error.permissionEnderAll");
+                return;
+            }
+
+            // Protected check
+            if (!Permissions.OVERRIDE.hasPermission(player)
+                    && Permissions.EXEMPT.hasPermission(onlineTarget)) {
+                plugin.sendMessage(player, "messages.error.permissionExempt",
+                        "%target%", onlineTarget.getDisplayName());
+                return;
+            }
+
+            // Crossworld check
+            if (!Permissions.CROSSWORLD.hasPermission(player)
+                    && !onlineTarget.getWorld().equals(player.getWorld())) {
+                plugin.sendMessage(player, "messages.error.permissionCrossWorld",
+                        "%target%", onlineTarget.getDisplayName());
+                return;
+            }
+        }
+
+        // Record the target
+        (openinv ? this.openInvHistory : this.openEnderHistory).put(player, this.plugin.getPlayerID(target));
+
+        // Create the inventory
+        final ISpecialInventory inv;
+        try {
+            inv = openinv ? this.plugin.getSpecialInventory(onlineTarget, online) : this.plugin.getSpecialEnderChest(onlineTarget, online);
+        } catch (Exception e) {
+            plugin.sendMessage(player, "messages.error.commandException");
+            e.printStackTrace();
+            return;
+        }
+
+        // Open the inventory
+        plugin.openInventory(player, inv);
+    }
+
+    @Override
+    public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (!command.testPermissionSilent(sender) || args.length != 1) {
+            return Collections.emptyList();
+        }
+
+        return TabCompleter.completeOnlinePlayer(sender, args[0]);
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/OpenInvPluginCommand.java

@@ -1,148 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.commands;
-
-import java.util.HashMap;
-
-import com.lishid.openinv.OpenInv;
-import com.lishid.openinv.Permissions;
-import com.lishid.openinv.internal.ISpecialPlayerInventory;
-
-import org.bukkit.ChatColor;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.scheduler.BukkitRunnable;
-
-public class OpenInvPluginCommand implements CommandExecutor {
-
-    private final OpenInv plugin;
-    private final HashMap<Player, String> openInvHistory = new HashMap<Player, String>();
-
-    public OpenInvPluginCommand(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    @Override
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.RED + "You can't use this from the console.");
-            return true;
-        }
-
-        if (args.length > 0 && args[0].equalsIgnoreCase("?")) {
-            plugin.showHelp((Player) sender);
-            return true;
-        }
-
-        final Player player = (Player) sender;
-
-        // History management
-        String history = openInvHistory.get(player);
-
-        if (history == null || history == "") {
-            history = player.getName();
-            openInvHistory.put(player, history);
-        }
-
-        final String name;
-
-        // Read from history if target is not named
-        if (args.length < 1) {
-            name = history;
-        } else {
-            name = args[0];
-        }
-
-        new BukkitRunnable() {
-            @Override
-            public void run() {
-                final OfflinePlayer offlinePlayer = plugin.matchPlayer(name);
-
-                if (offlinePlayer == null || !offlinePlayer.hasPlayedBefore() && !offlinePlayer.isOnline()) {
-                    player.sendMessage(ChatColor.RED + "Player not found!");
-                    return;
-                }
-
-                new BukkitRunnable() {
-                    @Override
-                    public void run() {
-                        if (!player.isOnline()) {
-                            return;
-                        }
-                        openInventory(player, offlinePlayer);
-                    }
-                }.runTask(plugin);
-
-            }
-        }.runTaskAsynchronously(plugin);
-
-        return true;
-    }
-
-    private void openInventory(Player player, OfflinePlayer target) {
-
-
-        Player onlineTarget;
-        boolean online = target.isOnline();
-
-        if (!online) {
-            // Try loading the player's data
-            onlineTarget = plugin.loadPlayer(target);
-
-            if (onlineTarget == null) {
-                player.sendMessage(ChatColor.RED + "Player not found!");
-                return;
-            }
-        } else {
-            onlineTarget = target.getPlayer();
-        }
-
-        // Permissions checks
-        if (onlineTarget.equals(player)) {
-            // Self-open check
-            if (!Permissions.OPENSELF.hasPermission(player)) {
-                player.sendMessage(ChatColor.RED + "You're not allowed to openinv yourself.");
-                return;
-            }
-        } else {
-            // Protected check
-            if (!Permissions.OVERRIDE.hasPermission(player) && Permissions.EXEMPT.hasPermission(onlineTarget)) {
-                player.sendMessage(ChatColor.RED + onlineTarget.getDisplayName() + "'s inventory is protected!");
-                return;
-            }
-
-            // Crossworld check
-            if ((!Permissions.CROSSWORLD.hasPermission(player) && !Permissions.OVERRIDE.hasPermission(player)) && onlineTarget.getWorld() != player.getWorld()) {
-                player.sendMessage(ChatColor.RED + onlineTarget.getDisplayName() + " is not in your world!");
-                return;
-            }
-        }
-
-        // Record the target
-        openInvHistory.put(player, onlineTarget.getName());
-
-        // Create the inventory
-        ISpecialPlayerInventory inv = plugin.getInventory(onlineTarget, online);
-
-        // Open the inventory
-        player.openInventory(inv.getBukkitInventory());
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/commands/SearchCommand.java

@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.commands.search.ChunkSearchOption;
+import com.lishid.openinv.commands.search.CompletableOption;
+import com.lishid.openinv.commands.search.ItemAmountOption;
+import com.lishid.openinv.commands.search.ItemEnchantOption;
+import com.lishid.openinv.commands.search.ItemTypeOption;
+import com.lishid.openinv.commands.search.PlayerSearchOption;
+import com.lishid.openinv.commands.search.PseudoOption;
+import com.lishid.openinv.search.Search;
+import com.lishid.openinv.search.bucket.SearchBucket;
+import com.lishid.openinv.search.match.ItemMatcher;
+import com.lishid.openinv.search.match.MatchableItem;
+import com.lishid.openinv.search.match.MatchableMeta;
+import com.lishid.openinv.util.PseudoJson;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class SearchCommand implements TabExecutor {
+
+    private final OpenInv plugin;
+    private final Collection<String> activeSearches = Collections.newSetFromMap(new ConcurrentHashMap<>());
+
+    private final Collection<CompletableOption<SearchBucket>> completableSearchBuckets = new HashSet<>();
+    private final Collection<CompletableOption<MatchableItem>> completableMatchOptions = new HashSet<>();
+    private final Collection<CompletableOption<MatchableMeta>> completableMatchMetaOptions = new HashSet<>();
+
+    public SearchCommand(OpenInv plugin) {
+        this.plugin = plugin;
+
+        this.completableSearchBuckets.add(new ChunkSearchOption());
+        this.completableSearchBuckets.add(new PlayerSearchOption(plugin));
+        this.completableMatchOptions.add(new ItemAmountOption());
+        this.completableMatchOptions.add(new ItemTypeOption());
+        this.completableMatchMetaOptions.add(new ItemEnchantOption());
+    }
+
+    @Override
+    public boolean onCommand(
+            @NotNull CommandSender sender,
+            @NotNull Command command,
+            @NotNull String label,
+            @NotNull String[] args) {
+
+        if (args.length < 2) {
+            return false;
+        }
+
+        String id = sender instanceof Player ? plugin.getPlayerID((Player) sender) : "CONSOLE";
+
+        if (activeSearches.contains(id)) {
+            plugin.sendMessage(sender, "messages.error.search.activeSearch");
+            return true;
+        }
+
+        Collection<PseudoJson> arguments = new HashSet<>();
+        for (String arg : args) {
+            arg = arg.toLowerCase(Locale.ROOT);
+            try {
+                arguments.add(PseudoJson.fromString(arg));
+            } catch (IllegalArgumentException e) {
+                plugin.sendMessage(sender, "messages.error.search.invalidSchema", "%value%", arg);
+                return true;
+            }
+        }
+
+        Collection<SearchBucket> searchBuckets = getSearchBuckets(sender, arguments);
+
+        if (searchBuckets.isEmpty()) {
+            plugin.sendMessage(sender, "messages.error.search.invalidInventory");
+            return true;
+        }
+
+        ItemMatcher matcher = getMatcher(sender, arguments);
+
+        if (matcher == null) {
+            plugin.sendMessage(sender, "messages.error.search.invalidMatcher");
+            return true;
+        }
+
+        activeSearches.add(id);
+
+        new Search(matcher, searchBuckets, () -> activeSearches.remove(id)).schedule(sender, plugin);
+
+        return true;
+    }
+
+    private @Nullable ItemMatcher getMatcher(@NotNull CommandSender sender, @NotNull Collection<PseudoJson> args) {
+        List<PseudoOption<MatchableItem>> matchItemOptions = new ArrayList<>();
+        List<PseudoOption<MatchableMeta>> matchMetaOptions = new ArrayList<>();
+
+
+        for (PseudoJson arg : args) {
+            addMatchOptions(completableMatchOptions, matchItemOptions, sender, arg);
+            addMatchOptions(completableMatchMetaOptions, matchMetaOptions, sender, arg);
+        }
+
+        // Must have a match option. Null entries indicate a parsing error.
+        if (matchItemOptions.isEmpty()
+                || matchItemOptions.stream().anyMatch(Objects::isNull)
+                || matchMetaOptions.stream().anyMatch(Objects::isNull)) {
+            return null;
+        }
+
+        return new ItemMatcher(
+                matchItemOptions.stream().map(PseudoOption::option).toList(),
+                matchMetaOptions.stream().map(PseudoOption::option).toList());
+    }
+
+    private <T> void addMatchOptions(
+            @NotNull Collection<CompletableOption<T>> completableOptions,
+            @NotNull Collection<PseudoOption<T>> options,
+            @NotNull CommandSender sender,
+            @NotNull PseudoJson arg) {
+        for (CompletableOption<T> option : completableOptions) {
+            if (option.matches(sender, arg)) {
+                PseudoOption<T> parsed = option.parse(sender, arg);
+                if (parsed == null) {
+                    options.add(null);
+                    continue;
+                }
+
+                if (option.isUnique()) {
+                    String uniqueId = option.getName();
+
+                    // Match existing options.
+                    List<PseudoOption<T>> matches = options.stream()
+                            .filter(Objects::nonNull)
+                            .filter(bucket -> bucket.pseudoJson().getIdentifier().equals(uniqueId))
+                            .collect(Collectors.toList());
+
+                    // Remove all existing options.
+                    options.removeAll(matches);
+
+                    // Merge with existing options.
+                    for (PseudoOption<T> match : matches) {
+                        PseudoOption<T> newParsed = option.merge(sender, match, parsed);
+                        if (newParsed != null) {
+                            parsed = newParsed;
+                        }
+                    }
+                }
+                options.add(parsed);
+            }
+        }
+    }
+
+    private Collection<SearchBucket> getSearchBuckets(
+            @NotNull CommandSender sender,
+            @NotNull Collection<PseudoJson> args) {
+        List<PseudoOption<SearchBucket>> buckets = new ArrayList<>();
+
+        for (PseudoJson arg : args) {
+            addMatchOptions(completableSearchBuckets, buckets, sender, arg);
+        }
+
+        return buckets.stream().map(PseudoOption::option).collect(Collectors.toList());
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(
+            @NotNull CommandSender sender,
+            @NotNull Command command,
+            @NotNull String label,
+            @NotNull String[] args) {
+
+        List<PseudoJson> arguments = new ArrayList<>();
+
+        for (int i = 0; i < args.length; i++) {
+            String arg = args[i].toLowerCase(Locale.ROOT);
+            try {
+                arguments.add(PseudoJson.fromString(arg));
+            } catch (IllegalArgumentException e) {
+                if (i == args.length - 1) {
+                    // If last argument cannot be parsed, do not complete.
+                    return List.of();
+                }
+                // Otherwise, ignore formatting issues during tab completion.
+            }
+
+        }
+
+        // Ensure an argument exists.
+        if (arguments.isEmpty()) {
+            arguments.add(new PseudoJson(""));
+        }
+
+        // Remove last indexed argument, it is being completed.
+        PseudoJson last = arguments.remove(arguments.size() - 1);
+
+        // Due to generics, can't just use generic list of options to start with.
+        Collection<PseudoOption<SearchBucket>> buckets = new HashSet<>();
+        Collection<PseudoOption<MatchableItem>> items = new HashSet<>();
+        Collection<PseudoOption<MatchableMeta>> metas = new HashSet<>();
+        for (PseudoJson arg : arguments) {
+            addMatchOptions(completableSearchBuckets, buckets, sender, arg);
+            addMatchOptions(completableMatchOptions, items, sender, arg);
+            addMatchOptions(completableMatchMetaOptions, metas, sender, arg);
+        }
+        Collection<PseudoOption<?>> options = new HashSet<>();
+        options.addAll(buckets);
+        options.addAll(items);
+        options.addAll(metas);
+
+        // Suggest all completable options' completions.
+        return Stream.concat(completableSearchBuckets.stream(),
+                Stream.concat(completableMatchOptions.stream(),
+                        completableMatchMetaOptions.stream()))
+                // Don't suggest unique options that are already present.
+                .filter(option ->
+                        option.isUnique() && options.stream().anyMatch(pseudoOption ->
+                                pseudoOption.pseudoJson().getIdentifier().equals(option.getName())))
+                .flatMap(option -> option.suggestOptions(sender, last).stream())
+                .distinct()
+                .toList();
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/SearchInvPluginCommand.java

@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.commands;
-
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
-
-public class SearchInvPluginCommand implements CommandExecutor {
-
-    @Override
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-
-        Material material = null;
-        int count = 1;
-
-        if (args.length >= 1) {
-            String[] gData = null;
-            gData = args[0].split(":");
-            material = Material.matchMaterial(gData[0]);
-        }
-
-        if (args.length >= 2) {
-            try {
-                count = Integer.parseInt(args[1]);
-            } catch (NumberFormatException ex) {
-                sender.sendMessage(ChatColor.RED + "'" + args[1] + "' is not a number!");
-                return false;
-            }
-        }
-
-        if (material == null) {
-            sender.sendMessage(ChatColor.RED + "Unknown item");
-            return false;
-        }
-
-        StringBuilder players = new StringBuilder();
-        for (Player player : Bukkit.getServer().getOnlinePlayers()) {
-            Inventory inventory = command.getName().equals("searchinv") ? player.getInventory() : player.getEnderChest();
-            if (inventory.contains(material, count)) {
-                players.append(player.getName()).append(", ");
-            }
-        }
-
-        // Matches found, delete trailing comma and space
-        if (players.length() > 0) {
-            players.delete(players.length() - 2, players.length());
-        } else {
-            sender.sendMessage("No players found with " + material.toString());
-        }
-
-        sender.sendMessage("Players with the item " + material.toString() + ":  " + players.toString());
-        return true;
-    }
-
-}

plugin/src/main/java/com/lishid/openinv/commands/SilentChestPluginCommand.java

@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2011-2014 lishid.  All rights reserved.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation,  version 3.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.lishid.openinv.commands;
-
-import org.bukkit.ChatColor;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-
-import com.lishid.openinv.OpenInv;
-
-public class SilentChestPluginCommand implements CommandExecutor {
-
-    private final OpenInv plugin;
-
-    public SilentChestPluginCommand(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.RED + "You can't use this from the console.");
-            return true;
-        }
-
-        Player player = (Player) sender;
-
-        if (args.length > 0 && args[0].equalsIgnoreCase("check")) {
-            sender.sendMessage("SilentChest is " + (plugin.getPlayerAnyChestStatus(player) ? "ON" : "OFF") + ".");
-            return true;
-        }
-
-        plugin.setPlayerSilentChestStatus(player, !plugin.getPlayerSilentChestStatus(player));
-        sender.sendMessage("SilentChest is now " + (plugin.getPlayerSilentChestStatus(player) ? "ON" : "OFF") + ".");
-
-        return true;
-    }
-}

plugin/src/main/java/com/lishid/openinv/commands/search/ChunkSearchOption.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.lishid.openinv.search.bucket.ChunkBucket;
+import com.lishid.openinv.search.bucket.SearchBucket;
+import com.lishid.openinv.util.Permissions;
+import com.lishid.openinv.util.PseudoJson;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+import org.bukkit.Bukkit;
+import org.bukkit.Chunk;
+import org.bukkit.World;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ChunkSearchOption implements CompletableOption<SearchBucket> {
+
+    @Override
+    public @NotNull String getName() {
+        return "chunk";
+    }
+
+    @Override
+    public boolean matches(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        return CompletableOption.super.matches(sender, pseudoJson)
+                && Permissions.SEARCH_CHUNKS_LOADED.hasPermission(sender);
+    }
+
+    @Override
+    public @Nullable PseudoOption<SearchBucket> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        World world = null;
+        Integer chunkX = null;
+        Integer chunkZ = null;
+        int chunkRadius = 5;
+        boolean chunkLoad = false;
+        Map<String, String> mappings = pseudoJson.getMappings();
+
+        if (!(sender instanceof Player senderPlayer)) {
+            if (mappings.size() < 3) {
+                // Console must specify world, x center, z center.
+                return null;
+            }
+        } else {
+            world = senderPlayer.getWorld();
+            Chunk senderChunk = senderPlayer.getLocation().getChunk();
+            chunkX = senderChunk.getX();
+            chunkZ = senderChunk.getZ();
+        }
+
+        for (Map.Entry<String, String> entry : mappings.entrySet()) {
+            String key = entry.getKey();
+            String value = entry.getValue();
+
+            if (key.indexOf('w') >= 0) {
+                world = null;
+                // Name should always be lower case by this point. Ignore case when selecting world.
+                for (World loaded : Bukkit.getWorlds()) {
+                    if (loaded.getName().equalsIgnoreCase(value)) {
+                        world = loaded;
+                        break;
+                    }
+                }
+            } else if (key.indexOf('x') >= 0) {
+                try {
+                    chunkX = Integer.parseInt(value);
+                } catch (NumberFormatException e) {
+                    chunkX = null;
+                }
+            } else if (key.indexOf('z') >= 0) {
+                try {
+                    chunkZ = Integer.parseInt(value);
+                } catch (NumberFormatException e) {
+                    chunkZ = null;
+                }
+            } else if (key.indexOf('r') >= 0) {
+                // R is for radius. Needs to be checked later so that "world" doesn't result in a false positive.
+                try {
+                    chunkRadius = Integer.parseInt(value);
+                } catch (NumberFormatException e) {
+                    // Fall through to default radius.
+                }
+            } else if (key.indexOf('l') >= 0) {
+                // L is for loaded. Needs to be checked later so that "world" doesn't result in a false positive.
+                chunkLoad = Permissions.SEARCH_CHUNKS_UNLOADED.hasPermission(sender) && Boolean.parseBoolean(value);
+            }
+        }
+
+        if (world == null || chunkX == null || chunkZ == null || chunkRadius < 0) {
+            // Invalid data provided.
+            return null;
+        }
+
+        return new PseudoOption<>(pseudoJson, new ChunkBucket(world, chunkX, chunkZ, chunkRadius, chunkLoad));
+    }
+
+    @Override
+    public @NotNull Collection<String> suggestOptions(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        // TODO
+        return Set.of();
+    }
+
+    @Override
+    public boolean isUnique() {
+        return false;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/CompletableOption.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.lishid.openinv.util.PseudoJson;
+import java.util.Collection;
+import java.util.Locale;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Interface defining behavior for an option.
+ *
+ * @param <T> the type of option represented
+ */
+public interface CompletableOption<T> {
+
+    /**
+     * Get unique identifier representing the option.
+     *
+     * @return the unique identifier
+     */
+    @NotNull String getName();
+
+    /**
+     * Check if the <code>CompletableOption</code> matches the given <code>PseudoJson</code>.
+     *
+     * @param sender the individual using the option
+     * @param pseudoJson the pseudo-JSON element
+     * @return true if the CompletableOption matches
+     */
+    default boolean matches(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        return pseudoJson.getIdentifier().toLowerCase(Locale.ROOT).startsWith(getName());
+    }
+
+    /**
+     * Parse the option represented from the given <code>PseudoJson</code>.
+     *
+     * @param sender the individual using the option
+     * @param pseudoJson the pseudo-JSON element
+     * @return the parsed options
+     */
+    @Nullable PseudoOption<T> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson);
+
+    /**
+     * Form a collection of viable permutations to suggest for the given <code>PseudoJson</code>.
+     *
+     * @param sender the individual to suggest options for
+     * @param pseudoJson the parsed pseudo-JSON
+     * @return the suggested permutations
+     */
+    @NotNull Collection<String> suggestOptions(
+            @NotNull CommandSender sender,
+            @NotNull PseudoJson pseudoJson);
+
+    /**
+     * Get whether or not multiple different copies of this <code>CompletableOption</code> are allowed.
+     *
+     * @return true if only a single instance is allowed
+     */
+    boolean isUnique();
+
+    /**
+     * Merge similar elements. Used to enforce {@link #isUnique()} despite multiples being provided.
+     *
+     * @param sender the individual using the options
+     * @param first the first parsed option
+     * @param second the second parsed option
+     * @return a single element containing a best-effort merge of both
+     */
+    default @Nullable PseudoOption<T> merge(
+            @NotNull CommandSender sender,
+            @NotNull PseudoOption<?> first,
+            @NotNull PseudoOption<?> second) {
+        PseudoJson merge = new PseudoJson(first.pseudoJson().getIdentifier());
+
+        // Use mappings of first for our base.
+        first.pseudoJson().getMappings().forEach(merge::put);
+        // Overwrite with second.
+        second.pseudoJson().getMappings().forEach(merge::put);
+
+        // Parse merged options.
+        PseudoOption<T> parsed = parse(sender, merge);
+
+        if (parsed != null) {
+            return parsed;
+        }
+
+        // On parsing failure, try second instead.
+        merge = new PseudoJson(second.pseudoJson().getIdentifier(), merge.getMappings());
+
+        return parse(sender, merge);
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/ItemAmountOption.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.lishid.openinv.search.match.ItemMatchables;
+import com.lishid.openinv.search.match.MatchableItem;
+import com.lishid.openinv.util.PseudoJson;
+import com.lishid.openinv.util.TabCompleter;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.bukkit.command.CommandSender;
+import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ItemAmountOption implements CompletableOption<MatchableItem> {
+
+    @Override
+    public @NotNull String getName() {
+        return "amount";
+    }
+
+    @Override
+    public @Nullable PseudoOption<MatchableItem> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        String minAmountString = pseudoJson.getMappings().entrySet().stream().findFirst().map(Map.Entry::getValue).orElse(null);
+        if (minAmountString == null) {
+            // Amount not correctly specified. Warn about spec.
+            return null;
+        }
+        int minAmount;
+        try {
+            minAmount = Integer.parseInt(minAmountString);
+        } catch (NumberFormatException e) {
+            // Amount can't be parsed. Warn about spec.
+            return null;
+        }
+
+        return new PseudoOption<>(pseudoJson, ItemMatchables.hasAmount(minAmount));
+    }
+
+    @Override
+    public @NotNull Collection<String> suggestOptions(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        // TODO combine with type
+        if (!pseudoJson.getIdentifier().equals(getName())) {
+            // Suggest name while unformed.
+            if (StringUtil.startsWithIgnoreCase(getName(), pseudoJson.getIdentifier())) {
+                return Set.of(getName() + ":");
+            }
+            // If name is not a valid suggestion, suggest nothing.
+            return Set.of();
+        }
+
+        String minAmountString = pseudoJson.getMappings().entrySet().stream().findFirst().map(Map.Entry::getValue).orElse("");
+
+        // Find and suggest name in full pseudojson.
+        return TabCompleter.completeInteger(minAmountString).stream().map(match -> {
+            PseudoJson amount = new PseudoJson(getName());
+            amount.put(getName(), match);
+            return amount;
+        }).map(PseudoJson::asString).collect(Collectors.toSet());
+    }
+
+    @Override
+    public boolean isUnique() {
+        return true;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/ItemEnchantOption.java

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.github.jikoo.planarwrappers.util.StringConverters;
+import com.lishid.openinv.search.match.ItemMatchables;
+import com.lishid.openinv.search.match.MatchableMeta;
+import com.lishid.openinv.util.PseudoJson;
+import com.lishid.openinv.util.TabCompleter;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.bukkit.command.CommandSender;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ItemEnchantOption implements CompletableOption<MatchableMeta> {
+
+    @Override
+    public @NotNull String getName() {
+        return "enchant";
+    }
+
+    @Override
+    public @Nullable PseudoOption<MatchableMeta> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        Enchantment enchantment = null;
+        Integer enchantLevel = null;
+        for (Map.Entry<String, String> entry : pseudoJson.getMappings().entrySet()) {
+            if (entry.getValue().isBlank()) {
+                continue;
+            }
+            if (entry.getKey().indexOf('l') >= 0) {
+                try {
+                    enchantLevel = Integer.parseInt(entry.getValue());
+                } catch (NumberFormatException e) {
+                    // Level can't be parsed. Warn about spec.
+                    return null;
+                }
+            }
+            if (entry.getKey().indexOf('t') >= 0) {
+                enchantment = StringConverters.toEnchant(entry.getValue());
+                if (enchantment == null) {
+                    // Enchantment is specified but can't be parsed. Warn about spec.
+                    return null;
+                }
+            }
+        }
+
+        return new PseudoOption<>(pseudoJson, ItemMatchables.hasEnchant(enchantment, enchantLevel));
+    }
+
+    @Override
+    public @NotNull Collection<String> suggestOptions(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        if (!pseudoJson.getIdentifier().equals(getName())) {
+            if (!StringUtil.startsWithIgnoreCase(getName(), pseudoJson.getIdentifier())) {
+                // If enchant is not a valid suggestion, suggest nothing.
+                return Set.of();
+            }
+
+            // Suggest all options while unformed.
+            Set<String> set = new HashSet<>();
+            PseudoJson enchant = new PseudoJson(getName());
+            set.add(enchant.asString());
+            enchant.put("type", "");
+            set.add(enchant.asString());
+            enchant.put("level", "");
+            set.add(enchant.asString());
+            enchant.remove("type");
+            set.add(enchant.asString());
+            return set;
+        }
+
+        Collection<String> enchantments = null;
+        Integer enchantLevel = null;
+        for (Map.Entry<String, String> entry : pseudoJson.getMappings().entrySet()) {
+            if (entry.getValue().isBlank()) {
+                continue;
+            }
+            if (entry.getKey().indexOf('l') >= 0) {
+                try {
+                    enchantLevel = Integer.parseInt(entry.getValue());
+                } catch (NumberFormatException e) {
+                    // Level is present but cannot be parsed. Default 0.
+                    enchantLevel = 0;
+                }
+            }
+            if (entry.getKey().indexOf('t') >= 0) {
+                Enchantment enchant = StringConverters.toEnchant(entry.getValue());
+                if (enchant == null) {
+                    // Enchantment is specified but can't be parsed, tab complete.
+                    enchantments = TabCompleter.completeKeyed(entry.getValue(), Enchantment.values());
+                } else {
+                    enchantments = Set.of(entry.getValue());
+                }
+            }
+        }
+
+        PseudoJson enchant = new PseudoJson(getName());
+        if (enchantLevel != null) {
+            enchant.put("level", String.valueOf(enchantLevel));
+        }
+
+        if (enchantments == null) {
+            return Set.of(enchant.asString());
+        }
+
+        return enchantments.stream().map(enchantment -> {
+            // Reuse is fine, single-threaded.
+            enchant.put("type", enchantment);
+            return enchant;
+        }).map(PseudoJson::asString).collect(Collectors.toSet());
+    }
+
+    @Override
+    public boolean isUnique() {
+        return false;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/ItemTypeOption.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.github.jikoo.planarwrappers.util.StringConverters;
+import com.lishid.openinv.search.match.ItemMatchables;
+import com.lishid.openinv.search.match.MatchableItem;
+import com.lishid.openinv.util.PseudoJson;
+import com.lishid.openinv.util.TabCompleter;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.bukkit.Material;
+import org.bukkit.command.CommandSender;
+import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ItemTypeOption implements CompletableOption<MatchableItem> {
+
+    @Override
+    public @NotNull String getName() {
+        return "type";
+    }
+
+    @Override
+    public @Nullable PseudoOption<MatchableItem> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        String typeName = pseudoJson.getMappings().entrySet().stream().findFirst().map(Map.Entry::getValue).orElse(null);
+        Material material = StringConverters.toMaterial(typeName);
+        if (material == null) {
+            // Invalid material, warn about matcher spec.
+            return null;
+        }
+        return new PseudoOption<>(pseudoJson, ItemMatchables.isType(material));
+    }
+
+    @Override
+    public @NotNull Collection<String> suggestOptions(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        if (!pseudoJson.getIdentifier().equals(getName())) {
+            // Suggest name while unformed.
+            if (StringUtil.startsWithIgnoreCase(getName(), pseudoJson.getIdentifier())) {
+                return Set.of(getName() + ":");
+            }
+            // If name is not a valid suggestion, suggest nothing.
+            return Set.of();
+        }
+
+        String typeName = pseudoJson.getMappings().entrySet().stream().findFirst().map(Map.Entry::getValue).orElse("");
+
+        // Find and suggest matching types in full pseudojson.
+        return TabCompleter.completeMaterial(typeName).stream().map(match -> {
+            PseudoJson type = new PseudoJson(getName());
+            type.put(getName(), match);
+            return type;
+        }).map(PseudoJson::asString).collect(Collectors.toSet());
+    }
+
+    @Override
+    public boolean isUnique() {
+        return true;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/PlayerSearchOption.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.search.bucket.PlayerBucket;
+import com.lishid.openinv.search.bucket.SearchBucket;
+import com.lishid.openinv.util.Permissions;
+import com.lishid.openinv.util.PseudoJson;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class PlayerSearchOption implements CompletableOption<SearchBucket> {
+
+    private final OpenInv plugin;
+
+    public PlayerSearchOption(OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public @NotNull String getName() {
+        return "player";
+    }
+
+    @Override
+    public boolean matches(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        return CompletableOption.super.matches(sender, pseudoJson)
+                && Permissions.SEARCH_PLAYERS_ONLINE.hasPermission(sender);
+    }
+
+    @Override
+    public @Nullable PseudoOption<SearchBucket> parse(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        Optional<Boolean> optional = pseudoJson.getMappings().entrySet().stream()
+                .filter(entry -> entry.getKey().contains("offline"))
+                .findFirst()
+                .map(Map.Entry::getValue)
+                .map(Boolean::parseBoolean);
+
+        return new PseudoOption<>(
+                pseudoJson, new PlayerBucket(plugin,
+                !(optional.orElse(false) && Permissions.SEARCH_PLAYERS_OFFLINE.hasPermission(sender))));
+    }
+
+    @Override
+    public @NotNull Collection<String> suggestOptions(@NotNull CommandSender sender, @NotNull PseudoJson pseudoJson) {
+        // TODO
+        return Set.of();
+    }
+
+    @Override
+    public boolean isUnique() {
+        return true;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/commands/search/PseudoOption.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.commands.search;
+
+import com.lishid.openinv.util.PseudoJson;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Data holder for completable options.
+ *
+ * @param <T> the type of data
+ */
+public record PseudoOption<T>(@NotNull PseudoJson pseudoJson, @NotNull T option) {}

plugin/src/main/java/com/lishid/openinv/internal/IPlayerDataManager.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+import org.bukkit.OfflinePlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public interface IPlayerDataManager {
+
+    /**
+     * Loads a Player for an OfflinePlayer.
+     * </p>
+     * This method is potentially blocking, and should not be called on the main thread.
+     *
+     * @param offline the OfflinePlayer
+     * @return the Player loaded
+     */
+    @Nullable Player loadPlayer(@NotNull OfflinePlayer offline);
+
+    /**
+     * Creates a new Player from an existing one that will function slightly better offline.
+     *
+     * @return the Player
+     */
+    @NotNull Player inject(@NotNull Player player);
+
+    /**
+     * Opens an ISpecialInventory for a Player.
+     *
+     * @param player the Player opening the ISpecialInventory
+     * @param inventory the Inventory
+     *`
+     * @return the InventoryView opened
+     */
+    @Nullable InventoryView openInventory(@NotNull Player player, @NotNull ISpecialInventory inventory);
+
+    /**
+     * Convert a raw slot number into a player inventory slot number.
+     *
+     * <p>Note that this method is specifically for converting an ISpecialPlayerInventory slot number into a regular
+     * player inventory slot number.
+     *
+     * @param view the open inventory view
+     * @param rawSlot the raw slot in the view
+     * @return the converted slot number
+     */
+    int convertToPlayerSlot(InventoryView view, int rawSlot);
+
+}

plugin/src/main/java/com/lishid/openinv/internal/OpenInventoryView.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.internal;
+
+import com.lishid.openinv.OpenInv;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+
+public class OpenInventoryView extends InventoryView {
+
+    private final Player player;
+    private final ISpecialInventory inventory;
+    private final String titleKey;
+    private final String titleDefaultSuffix;
+    private String title;
+
+    public OpenInventoryView(Player player, ISpecialInventory inventory, String titleKey, String titleDefaultSuffix) {
+        this.player = player;
+        this.inventory = inventory;
+        this.titleKey = titleKey;
+        this.titleDefaultSuffix = titleDefaultSuffix;
+    }
+
+    @Override
+    public @NotNull Inventory getTopInventory() {
+        return inventory.getBukkitInventory();
+    }
+
+    @Override
+    public @NotNull Inventory getBottomInventory() {
+        return getPlayer().getInventory();
+    }
+
+    @Override
+    public @NotNull HumanEntity getPlayer() {
+        return player;
+    }
+
+    @Override
+    public @NotNull InventoryType getType() {
+        return inventory.getBukkitInventory().getType();
+    }
+
+    @Override
+    public @NotNull String getTitle() {
+        if (title == null) {
+            HumanEntity owner = inventory.getPlayer();
+
+            String localTitle = OpenInv.getPlugin(OpenInv.class)
+                    .getLocalizedMessage(
+                            owner,
+                            titleKey,
+                            "%player%",
+                            owner.getName());
+            if (localTitle != null) {
+                title = localTitle;
+            } else  {
+                title = owner.getName() + titleDefaultSuffix;
+            }
+        }
+
+        return title;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/listeners/InventoryListener.java

@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.listeners;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import com.lishid.openinv.util.InventoryAccess;
+import com.lishid.openinv.util.Permissions;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.bukkit.GameMode;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.inventory.InventoryAction;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryCloseEvent;
+import org.bukkit.event.inventory.InventoryDragEvent;
+import org.bukkit.event.inventory.InventoryInteractEvent;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Listener for inventory-related events to prevent modification of inventories where not allowed.
+ *
+ * @author Jikoo
+ */
+public class InventoryListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public InventoryListener(final OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler
+    public void onInventoryClose(@NotNull final InventoryCloseEvent event) {
+        if (!(event.getPlayer() instanceof Player)) {
+            return;
+        }
+
+        Player player = (Player) event.getPlayer();
+
+        if (this.plugin.getPlayerSilentChestStatus(player)) {
+            this.plugin.getAnySilentContainer().deactivateContainer(player);
+        }
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onInventoryClick(@NotNull final InventoryClickEvent event) {
+        if (handleInventoryInteract(event)) {
+            return;
+        }
+
+        // Safe cast - has to be a player to be the holder of a special player inventory.
+        Player player = (Player) event.getWhoClicked();
+
+        if (event.getAction() != InventoryAction.MOVE_TO_OTHER_INVENTORY) {
+            // All own-inventory interactions require updates to display properly.
+            // Update in same tick after event completion.
+            this.plugin.getServer().getScheduler().runTask(this.plugin, player::updateInventory);
+            return;
+        }
+
+        // Extra handling for MOVE_TO_OTHER_INVENTORY - apparently Mojang no longer removes the item from the target
+        // inventory prior to adding it to existing stacks.
+        ItemStack currentItem = event.getCurrentItem();
+        if (currentItem == null) {
+            // Other plugin doing some sort of handling (would be NOTHING for null item otherwise), ignore.
+            return;
+        }
+
+        ItemStack clone = currentItem.clone();
+        event.setCurrentItem(null);
+
+        // Complete add action in same tick after event completion.
+        this.plugin.getServer().getScheduler().runTask(this.plugin, () -> {
+            player.getInventory().addItem(clone);
+            player.updateInventory();
+        });
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onInventoryDrag(@NotNull final InventoryDragEvent event) {
+        if (handleInventoryInteract(event)) {
+            return;
+        }
+
+        InventoryView view = event.getView();
+        int topSize = view.getTopInventory().getSize();
+
+        // Get bottom inventory active slots as player inventory slots.
+        Set<Integer> slots = event.getRawSlots().stream()
+                .filter(slot -> slot >= topSize)
+                .map(slot -> plugin.convertToPlayerSlot(view, slot)).collect(Collectors.toSet());
+
+        int overlapLosses = 0;
+
+        // Count overlapping slots.
+        for (Map.Entry<Integer, ItemStack> newItem : event.getNewItems().entrySet()) {
+            int rawSlot = newItem.getKey();
+
+            // Skip bottom inventory slots.
+            if (rawSlot >= topSize) {
+                continue;
+            }
+
+            int convertedSlot = plugin.convertToPlayerSlot(view, rawSlot);
+
+            if (slots.contains(convertedSlot)) {
+                overlapLosses += getCountDiff(view.getItem(rawSlot), newItem.getValue());
+            }
+        }
+
+        // Allow no overlap to proceed as usual.
+        if (overlapLosses < 1) {
+            return;
+        }
+
+        ItemStack cursor = event.getCursor();
+        if (cursor != null) {
+            cursor.setAmount(cursor.getAmount() + overlapLosses);
+        } else {
+            cursor = event.getOldCursor().clone();
+            cursor.setAmount(overlapLosses);
+        }
+
+        event.setCursor(cursor);
+    }
+
+    private int getCountDiff(@Nullable ItemStack original, @NotNull ItemStack result) {
+        if (original == null || original.getType() != result.getType()) {
+            return result.getAmount();
+        }
+
+        return result.getAmount() - original.getAmount();
+    }
+
+    /**
+     * Handle common InventoryInteractEvent functions.
+     *
+     * @param event the InventoryInteractEvent
+     * @return true unless the top inventory is the holder's own inventory
+     */
+    private boolean handleInventoryInteract(@NotNull final InventoryInteractEvent event) {
+        HumanEntity entity = event.getWhoClicked();
+
+        // Un-cancel spectator interactions.
+        if (Permissions.SPECTATE.hasPermission(entity) && entity.getGameMode() == GameMode.SPECTATOR) {
+            event.setCancelled(false);
+        }
+
+        if (event.isCancelled()) {
+            return true;
+        }
+
+        Inventory inventory = event.getView().getTopInventory();
+
+        // Is the inventory a special ender chest?
+        if (InventoryAccess.isEnderChest(inventory)) {
+            // Disallow ender chest interaction for users without edit permission.
+            if (!Permissions.EDITENDER.hasPermission(entity)) {
+                event.setCancelled(true);
+            }
+            return true;
+        }
+
+        ISpecialPlayerInventory playerInventory = InventoryAccess.getPlayerInventory(inventory);
+
+        // Ignore inventories other than special player inventories.
+        if (playerInventory == null) {
+            return true;
+        }
+
+        // Disallow player inventory interaction for users without edit permission.
+        if (!Permissions.EDITINV.hasPermission(entity)) {
+            event.setCancelled(true);
+            return true;
+        }
+
+        // Only specially handle actions in the player's own inventory.
+        return !event.getWhoClicked().equals(playerInventory.getPlayer());
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/listeners/PlayerListener.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.listeners;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.util.Permissions;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event.Result;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerChangedWorldEvent;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+
+public class PlayerListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public PlayerListener(OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerJoin(final PlayerJoinEvent event) {
+        plugin.setPlayerOnline(event.getPlayer());
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onPlayerQuit(PlayerQuitEvent event) {
+        plugin.setPlayerOffline(event.getPlayer());
+    }
+
+    @EventHandler
+    public void onWorldChange(PlayerChangedWorldEvent event) {
+        plugin.changeWorld(event.getPlayer());
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
+    public void onPlayerInteract(PlayerInteractEvent event) {
+
+        // Do not cancel 3rd party plugins' custom events
+        if (!PlayerInteractEvent.class.equals(event.getClass())) {
+            return;
+        }
+
+        if (event.getAction() != Action.RIGHT_CLICK_BLOCK || event.getPlayer().isSneaking()
+                || event.useInteractedBlock() == Result.DENY || event.getClickedBlock() == null
+                || !plugin.getAnySilentContainer().isAnySilentContainer(event.getClickedBlock())) {
+            return;
+        }
+
+        Player player = event.getPlayer();
+        boolean any = Permissions.ANYCHEST.hasPermission(player) && plugin.getPlayerAnyChestStatus(player);
+        boolean needsAny = plugin.getAnySilentContainer().isAnyContainerNeeded(player, event.getClickedBlock());
+
+        if (!any && needsAny) {
+            return;
+        }
+
+        boolean silent = Permissions.SILENT.hasPermission(player) && plugin.getPlayerSilentChestStatus(player);
+
+        // If anycontainer or silentcontainer is active
+        if (any || silent) {
+            if (plugin.getAnySilentContainer().activateContainer(player, silent, event.getClickedBlock())) {
+                if (silent && plugin.notifySilentChest() && needsAny && plugin.notifyAnyChest()) {
+                    plugin.sendSystemMessage(player, "messages.info.containerBlockedSilent");
+                } else if (needsAny && plugin.notifyAnyChest()) {
+                    plugin.sendSystemMessage(player, "messages.info.containerBlocked");
+                } else if (silent && plugin.notifySilentChest()) {
+                    plugin.sendSystemMessage(player, "messages.info.containerSilent");
+                }
+            }
+            event.setCancelled(true);
+        }
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/listeners/PluginListener.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.listeners;
+
+import com.lishid.openinv.OpenInv;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.server.PluginDisableEvent;
+
+/**
+ * Listener for plugin-related events.
+ *
+ * @author Jikoo
+ */
+public class PluginListener implements Listener {
+
+    private final OpenInv plugin;
+
+    public PluginListener(OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    @EventHandler
+    public void onPluginDisable(PluginDisableEvent event) {
+        plugin.releaseAllPlayers(event.getPlugin());
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/Search.java

@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.search.bucket.SearchBucket;
+import com.lishid.openinv.search.match.ItemMatcher;
+import com.lishid.openinv.search.match.MatchResult;
+import com.lishid.openinv.search.match.Matchable;
+import com.lishid.openinv.util.MessagePart;
+import java.text.DecimalFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.stream.Collectors;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A search function.
+ */
+public class Search {
+
+    public static final BaseComponent SEPARATOR = new TextComponent(", ");
+
+    private final Set<MessagePart> matches = new HashSet<>();
+    private final ItemMatcher matcher;
+    private final double totalMatchables;
+    private final Iterator<SearchBucket> bucketIterator;
+    private final Runnable callback;
+    private SearchBucket current = null;
+    private int polls = 0;
+
+    public Search(
+            @NotNull ItemMatcher matcher,
+            @NotNull Collection<@NotNull SearchBucket> buckets,
+            @Nullable Runnable callback) {
+        // Just in case, copy contents to new set.
+        Set<SearchBucket> bucketSet = new HashSet<>(buckets);
+        this.matcher = matcher;
+        this.totalMatchables = bucketSet.stream().mapToInt(SearchBucket::size).sum();
+        this.bucketIterator = bucketSet.iterator();
+        this.callback = callback;
+    }
+
+    private boolean isComplete(OpenInv plugin) {
+        if (matches.size() >= plugin.getSearchResultsMax()) {
+            return true;
+        }
+        if (current != null && current.hasNext()) {
+            return false;
+        }
+        while (bucketIterator.hasNext()) {
+            current = bucketIterator.next();
+            if (current.hasNext()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Search the configured amount of Matchables.
+     *
+     * <p>Matchables are assembled asynchronously, then
+     *
+     * @param plugin the OpenInv instance
+     */
+    private void poll(OpenInv plugin) {
+        Collection<Matchable> syncMatchables = new ArrayList<>();
+        // Assemble matchables async, then search synchronously.
+        for (int i = 0; !isComplete(plugin) && i < plugin.getSearchPollsPerTick(); ++i) {
+            ++polls;
+            // Calling #isComplete will advance to next InventoryProvider as necessary.
+            // Bucket matchables for searching synchronously.
+            syncMatchables.add(current.next());
+        }
+
+        Future<Boolean> future = plugin.getServer().getScheduler().callSyncMethod(plugin, () -> {
+            for (Matchable matchable : syncMatchables) {
+                MatchResult match = matchable.match(matcher);
+                if (match.isMatch()) {
+                    matches.addAll(Arrays.asList(match.getMatch()));
+                }
+            }
+            return true;
+        });
+
+        try {
+            future.get();
+        } catch (InterruptedException | ExecutionException e) {
+            // Eat exception to prevent spam.
+        }
+    }
+
+    private void sendProgress(CommandSender sender, OpenInv plugin) {
+        if (!(sender instanceof Player) || polls % (10 * plugin.getSearchPollsPerTick()) != 1) {
+            return;
+        }
+        double progress = 100 * Math.min(polls, totalMatchables) / totalMatchables;
+        DecimalFormat percent = new DecimalFormat("00.0");
+        plugin.sendSystemMessage((Player) sender, "messages.info.search.progress",
+                "%progress%", percent.format(progress),
+                "%matches%", String.valueOf(matches.size()));
+    }
+
+    private void sendResults(CommandSender sender, OpenInv plugin) {
+        if (matches.isEmpty()) {
+            String localizedMessage = plugin.getLocalizedMessage(sender, "messages.info.search.noMatches");
+            if (localizedMessage == null) {
+                localizedMessage = "No items found with search parameters.";
+            }
+            sender.sendMessage(localizedMessage);
+            return;
+        }
+
+        String prefix = plugin.getLocalizedMessage(sender, "messages.info.search.matches");
+        if (prefix == null) {
+            prefix = "Locations of items matching parameters:";
+        }
+
+        if (sender instanceof Player) {
+            TextComponent textComponent = new TextComponent(prefix);
+            Iterator<MessagePart> iterator = matches.iterator();
+
+            int total = 0;
+            int searchResultsMax = plugin.getSearchResultsMax();
+            while (iterator.hasNext()) {
+                textComponent.addExtra(iterator.next().forPlayer());
+
+                ++total;
+                if (total >= searchResultsMax) {
+                    break;
+                }
+
+                 if (iterator.hasNext()) {
+                     textComponent.addExtra(SEPARATOR);
+                 }
+            }
+
+            // Paper deprecated Spigot's message API.
+            // This is a risky deprecation ignore - Spigot may eventually do the sane thing
+            // and just add a method accepting components to the player directly.
+            //noinspection deprecation
+            sender.spigot().sendMessage(textComponent);
+            return;
+        }
+
+        String message = matches.stream()
+                .limit(plugin.getSearchResultsMax())
+                .map(MessagePart::forConsole)
+                .collect(Collectors.joining(", ", prefix, ""));
+        sender.sendMessage(message);
+    }
+
+    public void schedule(CommandSender sender, OpenInv plugin) {
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                // Scheduler struggles to cancel async tasks with high frequency.
+                if (isCancelled()) {
+                    return;
+                }
+
+                poll(plugin);
+
+                if (isComplete(plugin)) {
+                    if (isCancelled()) {
+                        return;
+                    }
+
+                    sendResults(sender, plugin);
+                    cancel();
+
+                    if (callback != null) {
+                        callback.run();
+                    }
+                    return;
+                }
+
+                sendProgress(sender, plugin);
+            }
+        }.runTaskTimerAsynchronously(plugin, 0L, 1L);
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/bucket/ChunkBucket.java

@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+import com.lishid.openinv.search.match.MatchResult;
+import com.lishid.openinv.search.match.Matchable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.function.BiConsumer;
+import org.bukkit.Chunk;
+import org.bukkit.World;
+import org.jetbrains.annotations.NotNull;
+
+public class ChunkBucket implements SearchBucket {
+
+    private final World world;
+    private final boolean load;
+    private final List<ChunkCoord> chunks;
+    protected int index = -1;
+    private Boolean paper = null;
+
+    public ChunkBucket(@NotNull World world, int chunkX, int chunkZ, int radius, boolean load) {
+        this.world = world;
+        this.load = load;
+        this.chunks = new ArrayList<>();
+        // Order chunks based (loosely) on proximity.
+        spiralRectangle(radius, (deltaX, deltaZ) -> chunks.add(new ChunkCoord(chunkX + deltaX, chunkZ + deltaZ)));
+    }
+
+    @Override
+    public @NotNull Matchable next() throws IndexOutOfBoundsException {
+        ChunkCoord chunkCoord = chunks.get(++index);
+
+        if (!world.isChunkGenerated(chunkCoord.x(), chunkCoord.z())) {
+            return Matchable.EMPTY;
+        }
+
+        if (!load && !world.isChunkLoaded(chunkCoord.x(), chunkCoord.z())) {
+            return Matchable.EMPTY;
+        }
+
+        // If async chunk loading is not available, load chunk when checking.
+        if (!isPaper()) {
+            return new MatchableChunk(world, chunkCoord.x(), chunkCoord.z());
+        }
+
+        CompletableFuture<Chunk> chunkAt = world.getChunkAtAsync(chunkCoord.x(), chunkCoord.z());
+
+        Chunk chunk;
+        try {
+            chunk = chunkAt.get();
+        } catch (InterruptedException | ExecutionException e) {
+            return matcher -> MatchResult.NO_MATCH;
+        }
+
+        return new MatchableChunk(chunk);
+    }
+
+    private boolean isPaper() {
+        if (paper == null) {
+            try {
+                // Check for Paper.
+                Class.forName("com.destroystokyo.paper.PaperConfig");
+                paper = true;
+            } catch (ClassNotFoundException e) {
+                paper = false;
+            }
+        }
+
+        return paper;
+    }
+
+    @Override
+    public boolean hasNext() {
+        return index < chunks.size() - 1;
+    }
+
+    @Override
+    public int size() {
+        return chunks.size();
+    }
+
+    /**
+     * Produce a series of integer coordinates starting at 0, 0 that extend outward to form a centered square,
+     * producing closer proximity results sooner than a traditional double for loop from min to max.
+     *
+     * @param radius the radius of the square
+     * @param coordConsumer the method consuming the values produced
+     */
+    private static void spiralRectangle(int radius, BiConsumer<Integer, Integer> coordConsumer) {
+        for (int x = 0; x <= radius; ++x) {
+            for (int z = 0; z <= radius; ++z) {
+                coordConsumer.accept(x, z);
+                if (x != 0) {
+                    coordConsumer.accept(-x, z);
+                    if (z != 0) {
+                        coordConsumer.accept(-x, -z);
+                    }
+                }
+                if (z != 0) {
+                    coordConsumer.accept(x, -z);
+                }
+            }
+        }
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/bucket/ChunkCoord.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+/**
+ * A data holder for chunk coordinates.
+ */
+public record ChunkCoord(int x, int z) {}

plugin/src/main/java/com/lishid/openinv/search/bucket/MatchableChunk.java

@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+import com.lishid.openinv.search.match.ItemMatcher;
+import com.lishid.openinv.search.match.MatchResult;
+import com.lishid.openinv.search.match.Matchable;
+import com.lishid.openinv.util.MessagePart;
+import java.util.ArrayList;
+import java.util.List;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.HoverEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.chat.hover.content.Text;
+import org.bukkit.Chunk;
+import org.bukkit.World;
+import org.bukkit.block.BlockState;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryHolder;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+class MatchableChunk implements Matchable {
+
+    private Chunk chunk;
+    private World world;
+    private int chunkX;
+    private int chunkZ;
+
+    MatchableChunk(@NotNull Chunk chunk) {
+        this.chunk = chunk;
+    }
+
+    MatchableChunk(@NotNull World world, int chunkX, int chunkZ) {
+        this.world = world;
+        this.chunkX = chunkX;
+        this.chunkZ = chunkZ;
+    }
+
+    private Chunk getChunk() {
+        if (chunk == null) {
+            chunk = world.getChunkAt(chunkX, chunkZ);
+        }
+        return chunk;
+    }
+
+    @Override
+    public @NotNull MatchResult match(@NotNull ItemMatcher matcher) {
+        List<BlockState> blocks = new ArrayList<>();
+
+        for (BlockState tileEntity : getChunk().getTileEntities()) {
+            if (!(tileEntity instanceof InventoryHolder)) {
+                continue;
+            }
+
+            Inventory inventory = ((InventoryHolder) tileEntity).getInventory();
+
+            for (ItemStack content : inventory.getContents()) {
+                if (matcher.matches(content)) {
+                    blocks.add(tileEntity);
+                    break;
+                }
+            }
+        }
+
+        if (blocks.isEmpty()) {
+            return MatchResult.NO_MATCH;
+        }
+
+        MessagePart[] matches = new MessagePart[blocks.size()];
+        for (int i = 0; i < matches.length; ++i) {
+            BlockState state = blocks.get(i);
+            matches[i] = new MessagePart(() -> getComponent(state), () -> getString(state));
+        }
+
+        return new MatchResult(matches);
+    }
+
+    private static BaseComponent getComponent(BlockState state) {
+        TextComponent component = new TextComponent(state.getType().name());
+
+        String command = String.format(
+                "/execute in %s minecraft:tp %s %s %s",
+                state.getWorld().getName(),
+                state.getX(),
+                state.getY() + 1,
+                state.getZ());
+        component.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, command));
+
+        String hover = String.format(
+                "%s{world:%s,x:%s,y:%s,z:%s}\n\nClick to teleport.",
+                state.getType().getKey(),
+                state.getWorld().getName(),
+                state.getX(),
+                state.getY(),
+                state.getZ());
+        Text hoverText = new Text(new BaseComponent[] { new TextComponent(hover)});
+        component.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, hoverText));
+
+        return component;
+    }
+
+    private static String getString(BlockState state) {
+        return String.format(
+                "%s{world:%s,x:%s,y:%s,z:%s}",
+                state.getType().getKey(),
+                state.getWorld().getName(),
+                state.getX(),
+                state.getY(),
+                state.getZ());
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/bucket/MatchablePlayer.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.search.match.ItemMatcher;
+import com.lishid.openinv.search.match.MatchResult;
+import com.lishid.openinv.search.match.Matchable;
+import com.lishid.openinv.util.MessagePart;
+import java.util.UUID;
+import java.util.function.Supplier;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.HoverEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.chat.hover.content.Text;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.inventory.InventoryView;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.PlayerInventory;
+import org.jetbrains.annotations.NotNull;
+
+public class MatchablePlayer implements Matchable {
+
+    private final OpenInv plugin;
+    private final OfflinePlayer offlinePlayer;
+
+    public MatchablePlayer(OpenInv plugin, OfflinePlayer offlinePlayer) {
+        this.plugin = plugin;
+        this.offlinePlayer = offlinePlayer;
+    }
+
+    @Override
+    public @NotNull MatchResult match(@NotNull ItemMatcher matcher) {
+
+        Player player;
+        if (offlinePlayer instanceof Player) {
+            player = (Player) offlinePlayer;
+        } else {
+            player = plugin.loadPlayer(offlinePlayer);
+        }
+
+        if (player == null) {
+            return MatchResult.NO_MATCH;
+        }
+
+        boolean matchInv = false;
+        boolean matchEnder = false;
+
+        PlayerInventory playerInventory = player.getInventory();
+
+        // Check inventory. Modern implementations include armor and off hand in contents.
+        for (ItemStack content : playerInventory.getContents()) {
+            if (matcher.matches(content)) {
+                matchInv = true;
+                break;
+            }
+        }
+
+        InventoryView openInventory = player.getOpenInventory();
+
+        // If no matches are found yet, check cursor.
+        if (!matchInv && matcher.matches(openInventory.getCursor())) {
+            matchInv = true;
+        }
+
+        // Check player crafting inventory.
+        if (!matchInv && openInventory.getType() == InventoryType.CRAFTING) {
+            for (ItemStack content : openInventory.getTopInventory().getContents()) {
+                if (matcher.matches(content)) {
+                    matchInv = true;
+                    break;
+                }
+            }
+        }
+
+        // Check ender chest.
+        for (ItemStack content : player.getEnderChest().getContents()) {
+            if (matcher.matches(content)) {
+                matchEnder = true;
+                break;
+            }
+        }
+
+        if (!matchInv && !matchEnder) {
+            return MatchResult.NO_MATCH;
+        }
+
+        String name = player.getName();
+        UUID uuid = player.getUniqueId();
+
+        if (matchInv && matchEnder) {
+            return new MatchResult(new MessagePart[] {
+                    new MessagePart(() -> getBoth(name, uuid), () -> name + " (inv, ender)")
+            });
+        }
+
+        Supplier<BaseComponent> componentSupplier;
+        Supplier<String> stringSupplier;
+
+        if (matchInv) {
+            componentSupplier = () -> getSingle(name, () -> getInvClick(uuid), () -> getInvHover(name));
+            stringSupplier = () -> name + " (inv)";
+        } else {
+            componentSupplier = () -> getSingle(name, () -> getEnderClick(uuid), () -> getEnderHover(name));
+            stringSupplier = () -> name + " (ender)";
+        }
+
+        return new MatchResult(new MessagePart[] { new MessagePart(componentSupplier, stringSupplier) });
+    }
+
+    private static BaseComponent getBoth(String name, UUID uuid) {
+        BaseComponent component = new TextComponent(name + " (inv,");
+        component.setClickEvent(getInvClick(uuid));
+        component.setHoverEvent(getInvHover(name));
+
+        BaseComponent enderComponent = new TextComponent(" ender)");
+        enderComponent.setClickEvent(getEnderClick(uuid));
+        enderComponent.setHoverEvent(getEnderHover(name));
+
+        component.addExtra(enderComponent);
+        return component;
+    }
+
+    private static BaseComponent getSingle(String name, Supplier<ClickEvent> click, Supplier<HoverEvent> hover) {
+        BaseComponent component = new TextComponent(name);
+        component.setClickEvent(click.get());
+        component.setHoverEvent(hover.get());
+        return component;
+    }
+
+    private static ClickEvent getInvClick(UUID uuid) {
+        return getClick("/openinv:openinv ", uuid);
+    }
+
+    private static HoverEvent getInvHover(String name) {
+        return getHover("/openinv ", name);
+    }
+
+    private static ClickEvent getEnderClick(UUID uuid) {
+        return getClick("/openinv:openender ", uuid);
+    }
+
+    private static HoverEvent getEnderHover(String name) {
+        return getHover("/openender ", name);
+    }
+
+    private static ClickEvent getClick(String command, UUID uuid) {
+        // Actual command run is not exposed to user, so there's no reason not to use UUID and be precise.
+        return new ClickEvent(ClickEvent.Action.RUN_COMMAND, command + uuid);
+    }
+
+    private static HoverEvent getHover(String command, String name) {
+        BaseComponent[] text = new BaseComponent[] { new TextComponent(command + name) };
+        return new HoverEvent(HoverEvent.Action.SHOW_TEXT, new Text(text));
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/bucket/PlayerBucket.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+import com.lishid.openinv.OpenInv;
+import com.lishid.openinv.search.match.Matchable;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+public class PlayerBucket implements SearchBucket {
+
+    private final OpenInv plugin;
+    private final OfflinePlayer[] players;
+    private int index = -1;
+
+    public PlayerBucket(OpenInv plugin, boolean online) {
+        this.plugin = plugin;
+        if (online) {
+            this.players = Bukkit.getOnlinePlayers().toArray(new Player[0]);
+        } else {
+            this.players = Bukkit.getOfflinePlayers();
+        }
+    }
+
+    @Override
+    public boolean hasNext() {
+        return index < players.length - 1;
+    }
+
+    @Override
+    public @NotNull Matchable next() {
+        return new MatchablePlayer(plugin, players[++index]);
+    }
+
+    @Override
+    public int size() {
+        return 1;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/bucket/SearchBucket.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.bucket;
+
+import com.lishid.openinv.search.match.Matchable;
+import org.jetbrains.annotations.NotNull;
+
+public interface SearchBucket {
+
+    boolean hasNext();
+
+    @NotNull Matchable next() throws IndexOutOfBoundsException;
+
+    int size();
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/ItemMatchables.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ItemMatchables {
+
+    public static MatchableItem isType(@NotNull Material material) {
+        return itemStack -> itemStack.getType() == material;
+    }
+
+    public static MatchableItem hasAmount(int minAmount) {
+        return itemStack -> itemStack.getAmount() >= minAmount;
+    }
+
+    public static MatchableMeta hasEnchant(@Nullable Enchantment enchantment, @Nullable Integer minLevel) {
+        return itemMeta -> {
+            if (minLevel == null) {
+                if (enchantment == null) {
+                    // Level and enchantment not specified, any enchantment of any level matches.
+                    return !itemMeta.getEnchants().isEmpty();
+                }
+
+                // Level not specified, any level of enchantment matches.
+                return itemMeta.hasEnchant(enchantment);
+            }
+
+            if (enchantment != null) {
+                // Level and enchantment are specified, enchantment must meet or exceed level.
+                return itemMeta.getEnchantLevel(enchantment) >= minLevel;
+            }
+
+            // Enchantment not specified, any enchantment that meets or exceeds level matches.
+            for (int enchantLevel : itemMeta.getEnchants().values()) {
+                if (enchantLevel >= minLevel) {
+                    return true;
+                }
+            }
+
+            return false;
+        };
+    }
+
+    private ItemMatchables() {}
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/ItemMatcher.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import java.util.Collection;
+import java.util.HashSet;
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A collection of multiple filters used to match items.
+ */
+public class ItemMatcher {
+
+    private final Collection<MatchableItem> baseOptions;
+    private final Collection<MatchableMeta> metaOptions;
+
+    public ItemMatcher(
+            Collection<MatchableItem> baseOptions,
+            Collection<MatchableMeta> metaOptions) {
+        this.baseOptions = new HashSet<>(baseOptions);
+        this.metaOptions = new HashSet<>(metaOptions);
+    }
+
+    public boolean matches(@Nullable ItemStack other) {
+        // Ensure item exists.
+        if (other == null || other.getType() == Material.AIR) {
+            return false;
+        }
+
+        // Match options against base item.
+        for (MatchableItem baseOption : baseOptions) {
+            if (!baseOption.matches(other)) {
+                return false;
+            }
+        }
+
+        // If no meta options exist, item matches.
+        if (metaOptions.isEmpty()) {
+            return true;
+        }
+
+        // Require item meta for meta options.
+        ItemMeta meta;
+        if (!other.hasItemMeta() || (meta = other.getItemMeta()) == null) {
+            return false;
+        }
+
+        // Match meta-based options.
+        for (MatchableMeta metaOption : metaOptions) {
+            if (!metaOption.matches(meta)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public boolean isEmpty() {
+        return baseOptions.isEmpty() && metaOptions.isEmpty();
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/MatchResult.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import com.lishid.openinv.util.MessagePart;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class MatchResult {
+
+    public static final MatchResult NO_MATCH = new MatchResult();
+
+    private final MessagePart[] result;
+
+    private MatchResult() {
+        result = null;
+    }
+
+    public MatchResult(MessagePart @NotNull [] result) {
+        this.result = result;
+    }
+
+    public boolean isMatch() {
+        return result != null;
+    }
+
+    public MessagePart @Nullable [] getMatch() {
+        return result;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/Matchable.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import org.jetbrains.annotations.NotNull;
+
+public interface Matchable {
+
+    Matchable EMPTY = matcher -> MatchResult.NO_MATCH;
+
+    @NotNull MatchResult match(@NotNull ItemMatcher matcher);
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/MatchableItem.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+public interface MatchableItem {
+
+    boolean matches(@NotNull ItemStack itemStack);
+
+}

plugin/src/main/java/com/lishid/openinv/search/match/MatchableMeta.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.search.match;
+
+import org.bukkit.inventory.meta.ItemMeta;
+import org.jetbrains.annotations.NotNull;
+
+public interface MatchableMeta {
+
+    boolean matches(@NotNull ItemMeta itemMeta);
+
+}

plugin/src/main/java/com/lishid/openinv/util/Cache.java

@@ -1,16 +1,35 @@
-package com.lishid.openinv.util;
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
 
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Map;
+package com.lishid.openinv.util;
 
 import com.google.common.collect.Multimap;
 import com.google.common.collect.TreeMultimap;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
 
 /**
- * A minimal time-based cache implementation backed by a HashMap and TreeMultimap.
- * 
+ * A minimal thread-safe time-based cache implementation backed by a HashMap and TreeMultimap.
+ *
  * @author Jikoo
  */
 public class Cache<K, V> {
@@ -18,30 +37,20 @@ public class Cache<K, V> {
     private final Map<K, V> internal;
     private final Multimap<Long, K> expiry;
     private final long retention;
-    private final Function<V> inUseCheck, postRemoval;
+    private final Predicate<V> inUseCheck;
+    private final Consumer<V> postRemoval;
 
     /**
      * Constructs a Cache with the specified retention duration, in use function, and post-removal function.
-     * 
+     *
      * @param retention duration after which keys are automatically invalidated if not in use
-     * @param inUseCheck Function used to check if a key is considered in use
-     * @param postRemoval Function used to perform any operations required when a key is invalidated
+     * @param inUseCheck Predicate used to check if a key is considered in use
+     * @param postRemoval Consumer used to perform any operations required when a key is invalidated
      */
-    public Cache(long retention, Function<V> inUseCheck, Function<V> postRemoval) {
-        this.internal = new HashMap<K, V>();
+    public Cache(final long retention, final Predicate<V> inUseCheck, final Consumer<V> postRemoval) {
+        this.internal = new HashMap<>();
 
-        this.expiry = TreeMultimap.create(new Comparator<Long>() {
-                    @Override
-                    public int compare(Long long1, Long long2) {
-                        return long1.compareTo(long2);
-                    }
-                },
-                new Comparator<K>() {
-                    @Override
-                    public int compare(K k1, K k2) {
-                        return 0;
-                    }
-                });
+        this.expiry = TreeMultimap.create(Long::compareTo, (k1, k2) -> Objects.equals(k1, k2) ? 0 : 1);
 
         this.retention = retention;
         this.inUseCheck = inUseCheck;
@@ -51,66 +60,74 @@ public class Cache<K, V> {
     /**
      * Set a key and value pair. Keys are unique. Using an existing key will cause the old value to
      * be overwritten and the expiration timer to be reset.
-     * 
+     *
      * @param key key with which the specified value is to be associated
      * @param value value to be associated with the specified key
      */
-    public void put(K key, V value) {
+    public void put(final K key, final V value) {
         // Invalidate key - runs lazy check and ensures value won't be cleaned up early
-        invalidate(key);
+        this.invalidate(key);
 
-        internal.put(key, value);
-        expiry.put(System.currentTimeMillis() + retention, key);
+        synchronized (this.internal) {
+            this.internal.put(key, value);
+            this.expiry.put(System.currentTimeMillis() + this.retention, key);
+        }
     }
 
     /**
      * Returns the value to which the specified key is mapped, or null if no value is mapped for the key.
-     * 
+     *
      * @param key the key whose associated value is to be returned
      * @return the value to which the specified key is mapped, or null if no value is mapped for the key
      */
-    public V get(K key) {
+    public V get(final K key) {
         // Run lazy check to clean cache
-        lazyCheck();
+        this.lazyCheck();
 
-        return internal.get(key);
+        synchronized (this.internal) {
+            return this.internal.get(key);
+        }
     }
 
     /**
      * Returns true if the specified key is mapped to a value.
-     * 
+     *
      * @param key key to check if a mapping exists for
      * @return true if a mapping exists for the specified key
      */
-    public boolean containsKey(K key) {
+    public boolean containsKey(final K key) {
         // Run lazy check to clean cache
-        lazyCheck();
+        this.lazyCheck();
 
-        return internal.containsKey(key);
+        synchronized (this.internal) {
+            return this.internal.containsKey(key);
+        }
     }
 
     /**
      * Forcibly invalidates a key, even if it is considered to be in use.
-     * 
+     *
      * @param key key to invalidate
      */
-    public void invalidate(K key) {
+    public void invalidate(final K key) {
         // Run lazy check to clean cache
-        lazyCheck();
+        this.lazyCheck();
 
-        if (!internal.containsKey(key)) {
-            // Value either not present or cleaned by lazy check. Either way, we're good
-            return;
-        }
+        synchronized (this.internal) {
+            if (!this.internal.containsKey(key)) {
+                // Value either not present or cleaned by lazy check. Either way, we're good
+                return;
+            }
 
-        // Remove stored object
-        internal.remove(key);
+            // Remove stored object
+            this.internal.remove(key);
 
-        // Remove expiration entry - prevents more work later, plus prevents issues with values invalidating early
-        for (Iterator<Map.Entry<Long, K>> iterator = expiry.entries().iterator(); iterator.hasNext();) {
-            if (key.equals(iterator.next().getValue())) {
-                iterator.remove();
-                break;
+            // Remove expiration entry - prevents more work later, plus prevents issues with values invalidating early
+            for (Iterator<Map.Entry<Long, K>> iterator = this.expiry.entries().iterator(); iterator.hasNext();) {
+                if (key.equals(iterator.next().getValue())) {
+                    iterator.remove();
+                    break;
+                }
             }
         }
     }
@@ -119,11 +136,13 @@ public class Cache<K, V> {
      * Forcibly invalidates all keys, even if they are considered to be in use.
      */
     public void invalidateAll() {
-        for (V value : internal.values()) {
-            postRemoval.run(value);
+        synchronized (this.internal) {
+            for (V value : this.internal.values()) {
+                this.postRemoval.accept(value);
+            }
+            this.expiry.clear();
+            this.internal.clear();
         }
-        expiry.clear();
-        internal.clear();
     }
 
     /**
@@ -132,28 +151,36 @@ public class Cache<K, V> {
      */
     private void lazyCheck() {
         long now = System.currentTimeMillis();
-        long nextExpiry = now + retention;
-        for (Iterator<Map.Entry<Long, K>> iterator = expiry.entries().iterator(); iterator.hasNext();) {
-            Map.Entry<Long, K> entry = iterator.next();
+        synchronized (this.internal) {
+            List<K> inUse = new ArrayList<>();
+            for (Iterator<Map.Entry<Long, K>> iterator = this.expiry.entries().iterator(); iterator
+                    .hasNext();) {
+                Map.Entry<Long, K> entry = iterator.next();
 
-            if (entry.getKey() > now) {
-                break;
+                if (entry.getKey() > now) {
+                    break;
+                }
+
+                iterator.remove();
+
+                if (this.inUseCheck.test(this.internal.get(entry.getValue()))) {
+                    inUse.add(entry.getValue());
+                    continue;
+                }
+
+                V value = this.internal.remove(entry.getValue());
+
+                if (value == null) {
+                    continue;
+                }
+
+                this.postRemoval.accept(value);
             }
 
-            iterator.remove();
-
-            if (inUseCheck.run(internal.get(entry.getValue()))) {
-                expiry.put(nextExpiry, entry.getValue());
-                continue;
+            long nextExpiry = now + this.retention;
+            for (K value : inUse) {
+                this.expiry.put(nextExpiry, value);
             }
-
-            V value = internal.remove(entry.getValue());
-
-            if (value == null) {
-                continue;
-            }
-
-            postRemoval.run(value);
         }
     }
 

plugin/src/main/java/com/lishid/openinv/util/ConfigUpdater.java

@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import com.lishid.openinv.OpenInv;
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.configuration.ConfigurationSection;
+
+public class ConfigUpdater {
+
+    private final OpenInv plugin;
+
+    public ConfigUpdater(OpenInv plugin) {
+        this.plugin = plugin;
+    }
+
+    public void checkForUpdates() {
+        final int version = plugin.getConfig().getInt("config-version", 1);
+        ConfigurationSection defaults = plugin.getConfig().getDefaults();
+        if (defaults == null || version >= defaults.getInt("config-version")) {
+            return;
+        }
+
+        plugin.getLogger().info("Configuration update found! Performing update...");
+
+        // Backup the old config file
+        try {
+            plugin.getConfig().save(new File(plugin.getDataFolder(), "config_old.yml"));
+            plugin.getLogger().info("Backed up config.yml to config_old.yml before updating.");
+        } catch (IOException e) {
+            plugin.getLogger().warning("Could not back up config.yml before updating!");
+        }
+
+        plugin.getServer().getScheduler().runTaskAsynchronously(plugin, () -> {
+            if (version < 2) {
+                updateConfig1To2();
+            }
+            if (version < 3) {
+                updateConfig2To3();
+            }
+            if (version < 4) {
+                updateConfig3To4();
+            }
+            if (version < 5) {
+                updateConfig4To5();
+            }
+
+            plugin.getServer().getScheduler().runTask(plugin, () -> {
+                plugin.saveConfig();
+                plugin.getLogger().info("Configuration update complete!");
+            });
+        });
+    }
+
+    private void updateConfig4To5() {
+        plugin.getServer().getScheduler().runTask(plugin, () -> {
+            plugin.getConfig().set("settings.search.polls-per-tick", 5);
+            plugin.getConfig().set("settings.search.max-results", 40);
+            plugin.getConfig().set("config-version", 5);
+        });
+    }
+
+    private void updateConfig3To4() {
+        plugin.getServer().getScheduler().runTask(plugin, () -> {
+            plugin.getConfig().set("notify", null);
+            plugin.getConfig().set("settings.locale", "en_US");
+            plugin.getConfig().set("config-version", 4);
+        });
+    }
+
+    private void updateConfig2To3() {
+        plugin.getServer().getScheduler().runTask(plugin, () -> {
+            plugin.getConfig().set("config-version", 3);
+            plugin.getConfig().set("items.open-inv", null);
+            plugin.getConfig().set("ItemOpenInv", null);
+            plugin.getConfig().set("toggles.items.open-inv", null);
+            plugin.getConfig().set("settings.disable-saving",
+                    plugin.getConfig().getBoolean("DisableSaving", false));
+            plugin.getConfig().set("DisableSaving", null);
+        });
+    }
+
+    private void updateConfig1To2() {
+        plugin.getServer().getScheduler().runTask(plugin, () -> {
+            // Get the old config settings
+            boolean notifySilentChest = plugin.getConfig().getBoolean("NotifySilentChest", true);
+            boolean notifyAnyChest = plugin.getConfig().getBoolean("NotifyAnyChest", true);
+            plugin.getConfig().set("ItemOpenInvItemID", null);
+            plugin.getConfig().set("NotifySilentChest", null);
+            plugin.getConfig().set("NotifyAnyChest", null);
+            plugin.getConfig().set("config-version", 2);
+            plugin.getConfig().set("notify.any-chest", notifyAnyChest);
+            plugin.getConfig().set("notify.silent-chest", notifySilentChest);
+        });
+
+        updateToggles("AnyChest", "toggles.any-chest");
+        updateToggles("SilentChest", "toggles.silent-chest");
+    }
+
+    private void updateToggles(final String sectionName, final String newSectionName) {
+        ConfigurationSection section = plugin.getConfig().getConfigurationSection(sectionName);
+        // Ensure section exists
+        if (section == null) {
+            return;
+        }
+
+        Set<String> keys = section.getKeys(false);
+
+        // Ensure section has content
+        if (keys.isEmpty()) {
+            return;
+        }
+
+        final Map<String, Boolean> toggles = new HashMap<>();
+
+        for (String playerName : keys) {
+            OfflinePlayer player = plugin.matchPlayer(playerName);
+            if (player != null) {
+                toggles.put(plugin.getPlayerID(player), section.getBoolean(playerName + ".toggle", false));
+            }
+        }
+
+        plugin.getServer().getScheduler().runTask(plugin, () -> {
+            // Wipe old ConfigurationSection
+            plugin.getConfig().set(sectionName, null);
+
+            // Prepare new ConfigurationSection
+            ConfigurationSection newSection = plugin.getConfig().getConfigurationSection(newSectionName);
+            if (newSection == null) {
+                newSection = plugin.getConfig().createSection(newSectionName);
+            }
+            // Set new values
+            for (Map.Entry<String, Boolean> entry : toggles.entrySet()) {
+                newSection.set(entry.getKey(), entry.getValue());
+            }
+        });
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/Function.java

@@ -1,12 +0,0 @@
-package com.lishid.openinv.util;
-
-/**
- * Abstraction for some simple cache calls.
- * 
- * @author Jikoo
- */
-public abstract class Function<V> {
-
-    public abstract boolean run(V value);
-
-}

plugin/src/main/java/com/lishid/openinv/util/InternalAccessor.java

@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import com.lishid.openinv.internal.IAnySilentContainer;
+import com.lishid.openinv.internal.IPlayerDataManager;
+import com.lishid.openinv.internal.ISpecialEnderChest;
+import com.lishid.openinv.internal.ISpecialPlayerInventory;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+public class InternalAccessor {
+
+    private final Plugin plugin;
+    private final String version;
+    private boolean supported = false;
+    private IPlayerDataManager playerDataManager;
+    private IAnySilentContainer anySilentContainer;
+
+    public InternalAccessor(final Plugin plugin) {
+        this.plugin = plugin;
+
+        String packageName = plugin.getServer().getClass().getPackage().getName();
+        this.version = packageName.substring(packageName.lastIndexOf('.') + 1);
+
+        try {
+            Class.forName("com.lishid.openinv.internal." + this.version + ".SpecialPlayerInventory");
+            Class.forName("com.lishid.openinv.internal." + this.version + ".SpecialEnderChest");
+            this.playerDataManager = this.createObject(IPlayerDataManager.class, "PlayerDataManager");
+            this.anySilentContainer = this.createObject(IAnySilentContainer.class, "AnySilentContainer");
+            this.supported = InventoryAccess.isUsable();
+        } catch (Exception ignored) {}
+    }
+
+    public String getReleasesLink() {
+        switch (version) {
+            case "1_4_5":
+            case "1_4_6":
+            case "v1_4_R1":
+            case "v1_5_R2":
+            case "v1_5_R3":
+            case "v1_6_R1":
+            case "v1_6_R2":
+            case "v1_6_R3":
+            case "v1_7_R1":
+            case "v1_7_R2":
+            case "v1_7_R3":
+            case "v1_7_R4":
+            case "v1_8_R1":
+            case "v1_8_R2":
+            case "v1_9_R1":
+            case "v1_9_R2":
+            case "v1_10_R1":
+            case "v1_11_R1":
+            case "v1_12_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.0 (OpenInv-legacy)";
+            case "v1_13_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.0";
+            case "v1_13_R2":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.0.7";
+            case "v1_14_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.1";
+            case "v1_16_R1":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.4";
+            case "v1_8_R3":
+            case "v1_15_R1":
+            case "v1_16_R2":
+                return "https://github.com/lishid/OpenInv/releases/tag/4.1.5";
+            case "v1_16_R3":
+                return "https://github.com/Jikoo/OpenInv/releases/tag/4.1.8";
+            case "v1_17_R1":
+            default:
+                return "https://github.com/Jikoo/OpenInv/releases";
+        }
+    }
+
+    private <T> T createObject(final Class<? extends T> assignableClass, final String className,
+            final Object... params) throws ClassCastException, ClassNotFoundException,
+            InstantiationException, IllegalAccessException, IllegalArgumentException,
+            InvocationTargetException, NoSuchMethodException, SecurityException {
+        // Fetch internal class if it exists.
+        Class<?> internalClass = Class.forName("com.lishid.openinv.internal." + this.version + "." + className);
+        if (!assignableClass.isAssignableFrom(internalClass)) {
+            String message = String.format("Found class %s but cannot cast to %s!", internalClass.getName(), assignableClass.getName());
+            this.plugin.getLogger().warning(message);
+            throw new IllegalStateException(message);
+        }
+
+        // Quick return: no parameters, no need to fiddle about finding the correct constructor.
+        if (params.length == 0) {
+            return assignableClass.cast(internalClass.getConstructor().newInstance());
+        }
+
+        // Search constructors for one matching the given parameters
+        nextConstructor: for (Constructor<?> constructor : internalClass.getConstructors()) {
+            Class<?>[] requiredClasses = constructor.getParameterTypes();
+            if (requiredClasses.length != params.length) {
+                continue;
+            }
+            for (int i = 0; i < params.length; ++i) {
+                if (!requiredClasses[i].isAssignableFrom(params[i].getClass())) {
+                    continue nextConstructor;
+                }
+            }
+            return assignableClass.cast(constructor.newInstance(params));
+        }
+
+        StringBuilder builder = new StringBuilder("Found class ").append(internalClass.getName())
+                .append(" but cannot find any matching constructors for [");
+        for (Object object : params) {
+            builder.append(object.getClass().getName()).append(", ");
+        }
+        builder.delete(builder.length() - 2, builder.length());
+
+        String message = builder.append(']').toString();
+        this.plugin.getLogger().warning(message);
+
+        throw new IllegalArgumentException(message);
+    }
+
+    /**
+     * Creates an instance of the IAnySilentContainer implementation for the current server version.
+     *
+     * @return the IAnySilentContainer
+     * @throws IllegalStateException if server version is unsupported
+     */
+    public IAnySilentContainer getAnySilentContainer() {
+        if (!this.supported) {
+            throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
+        }
+        return this.anySilentContainer;
+    }
+
+    /**
+     * Creates an instance of the IPlayerDataManager implementation for the current server version.
+     *
+     * @return the IPlayerDataManager
+     * @throws IllegalStateException if server version is unsupported
+     */
+    public IPlayerDataManager getPlayerDataManager() {
+        if (!this.supported) {
+            throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
+        }
+        return this.playerDataManager;
+    }
+
+    /**
+     * Gets the server implementation version. If not initialized, returns the string "null"
+     * instead.
+     *
+     * @return the version, or "null"
+     */
+    public String getVersion() {
+        return this.version != null ? this.version : "null";
+    }
+
+    /**
+     * Checks if the server implementation is supported.
+     *
+     * @return true if initialized for a supported server version
+     */
+    public boolean isSupported() {
+        return this.supported;
+    }
+
+    /**
+     * Creates an instance of the ISpecialEnderChest implementation for the given Player, or
+     * null if the current version is unsupported.
+     *
+     * @param player the Player
+     * @param online true if the Player is online
+     * @return the ISpecialEnderChest created
+     * @throws InstantiationException if the ISpecialEnderChest could not be instantiated
+     */
+    public ISpecialEnderChest newSpecialEnderChest(final Player player, final boolean online) throws InstantiationException {
+        if (!this.supported) {
+            throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
+        }
+        try {
+            return this.createObject(ISpecialEnderChest.class, "SpecialEnderChest", player, online);
+        } catch (Exception e) {
+            throw new InstantiationException(String.format("Unable to create a new ISpecialEnderChest: %s", e.getMessage()));
+        }
+    }
+
+    /**
+     * Creates an instance of the ISpecialPlayerInventory implementation for the given Player..
+     *
+     * @param player the Player
+     * @param online true if the Player is online
+     * @return the ISpecialPlayerInventory created
+     * @throws InstantiationException if the ISpecialPlayerInventory could not be instantiated
+     */
+    public ISpecialPlayerInventory newSpecialPlayerInventory(final Player player, final boolean online) throws InstantiationException {
+        if (!this.supported) {
+            throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
+        }
+        try {
+            return this.createObject(ISpecialPlayerInventory.class, "SpecialPlayerInventory", player, online);
+        } catch (Exception e) {
+            throw new InstantiationException(String.format("Unable to create a new ISpecialPlayerInventory: %s", e.getMessage()));
+        }
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/LanguageManager.java

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import com.lishid.openinv.OpenInv;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.logging.Level;
+import org.bukkit.ChatColor;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A simple language manager supporting both custom and bundled languages.
+ *
+ * @author Jikoo
+ */
+public class LanguageManager {
+
+	private final OpenInv plugin;
+	private final String defaultLocale;
+	private final Map<String, YamlConfiguration> locales;
+
+	public LanguageManager(@NotNull OpenInv plugin, @NotNull String defaultLocale) {
+		this.plugin = plugin;
+		this.defaultLocale = defaultLocale;
+		this.locales = new HashMap<>();
+		getOrLoadLocale(defaultLocale);
+	}
+
+	private YamlConfiguration getOrLoadLocale(@NotNull String locale) {
+		YamlConfiguration loaded = locales.get(locale);
+		if (loaded != null) {
+			return loaded;
+		}
+
+		InputStream resourceStream = plugin.getResource(locale + ".yml");
+		YamlConfiguration localeConfigDefaults;
+		if (resourceStream == null) {
+			localeConfigDefaults = new YamlConfiguration();
+		} else {
+			try (BufferedReader reader = new BufferedReader(new InputStreamReader(resourceStream))) {
+				localeConfigDefaults = YamlConfiguration.loadConfiguration(reader);
+			} catch (IOException e) {
+				plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to load resource " + locale + ".yml", e);
+				localeConfigDefaults = new YamlConfiguration();
+			}
+		}
+
+		File file = new File(plugin.getDataFolder(), locale + ".yml");
+		YamlConfiguration localeConfig;
+
+		if (!file.exists()) {
+			localeConfig = localeConfigDefaults;
+			try {
+				localeConfigDefaults.save(file);
+			} catch (IOException e) {
+				plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
+			}
+		} else {
+			localeConfig = YamlConfiguration.loadConfiguration(file);
+
+			// Add new language keys
+			List<String> newKeys = new ArrayList<>();
+			for (String key : localeConfigDefaults.getKeys(true)) {
+				if (localeConfigDefaults.isConfigurationSection(key)) {
+					continue;
+				}
+
+				if (localeConfig.isSet(key)) {
+					continue;
+				}
+
+				localeConfig.set(key, localeConfigDefaults.get(key));
+				newKeys.add(key);
+			}
+
+			if (!newKeys.isEmpty()) {
+				plugin.getLogger().info("[LanguageManager] Added new language keys: " + String.join(", ", newKeys));
+				try {
+					localeConfig.save(file);
+				} catch (IOException e) {
+					plugin.getLogger().log(Level.WARNING, "[LanguageManager] Unable to save resource " + locale + ".yml", e);
+				}
+			}
+		}
+
+		if (!locale.equals(defaultLocale)) {
+			localeConfigDefaults = locales.get(defaultLocale);
+
+			// Check for missing keys
+			List<String> newKeys = new ArrayList<>();
+			for (String key : localeConfigDefaults.getKeys(true)) {
+				if (localeConfigDefaults.isConfigurationSection(key)) {
+					continue;
+				}
+
+				if (localeConfig.isSet(key)) {
+					continue;
+				}
+
+				newKeys.add(key);
+			}
+
+			if (!newKeys.isEmpty()) {
+				plugin.getLogger().info("[LanguageManager] Missing translations from " + locale + ".yml: " + String.join(", ", newKeys));
+			}
+
+			// Fall through to default locale
+			localeConfig.setDefaults(localeConfigDefaults);
+		}
+
+		locales.put(locale, localeConfig);
+		return localeConfig;
+	}
+
+	@Nullable
+	public String getValue(@NotNull String key, @Nullable String locale) {
+		String value = getOrLoadLocale(locale == null ? defaultLocale : locale.toLowerCase()).getString(key);
+		if (value == null || value.isEmpty()) {
+			return null;
+		}
+
+		value = ChatColor.translateAlternateColorCodes('&', value);
+
+		return value;
+	}
+
+	@Nullable
+	public String getValue(@NotNull String key, @Nullable String locale, @NotNull String... replacements) {
+		if (replacements.length % 2 != 0) {
+			plugin.getLogger().log(Level.WARNING, "[LanguageManager] Replacement data is uneven", new Exception());
+		}
+
+		String value = getValue(key, locale);
+
+		if (value == null) {
+			return null;
+		}
+
+		for (int i = 0; i < replacements.length; i += 2) {
+			value = value.replace(replacements[i], replacements[i + 1]);
+		}
+
+		return value;
+	}
+
+}

plugin/src/main/java/com/lishid/openinv/util/MessagePart.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import java.util.List;
+import java.util.function.Supplier;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class MessagePart {
+
+    private final Supplier<BaseComponent> playerProvider;
+    private final Supplier<String> consoleProvider;
+    private @Nullable BaseComponent playerComponent;
+    private @Nullable String consoleComponent;
+
+    public MessagePart(@NotNull Supplier<@NotNull BaseComponent> playerProvider) {
+        this(playerProvider, () -> unwrapComponent(playerProvider.get()));
+    }
+
+    public MessagePart(
+            @NotNull Supplier<@NotNull BaseComponent> playerProvider,
+            @NotNull Supplier<@NotNull String> consoleProvider) {
+        this.playerProvider = playerProvider;
+        this.consoleProvider = consoleProvider;
+    }
+
+    public BaseComponent forPlayer() {
+        if (this.playerComponent == null) {
+            this.playerComponent = playerProvider.get();
+        }
+        return this.playerComponent;
+    }
+
+    public String forConsole() {
+        if (consoleComponent == null) {
+            consoleComponent = consoleProvider.get();
+        }
+        return consoleComponent;
+    }
+
+    private static String unwrapComponent(BaseComponent component) {
+        StringBuilder builder = new StringBuilder();
+        ClickEvent clickEvent = component.getClickEvent();
+
+        if (clickEvent != null) {
+            // Prefer click events, i.e. "Check out our GitHub" with a link -> raw link
+            builder.append(clickEvent.getValue());
+        } else if (component instanceof TextComponent) {
+            builder.append(((TextComponent) component).getText());
+        }
+
+        List<BaseComponent> extra = component.getExtra();
+        if (extra != null) {
+            for (BaseComponent extraComponent : extra) {
+                builder.append(unwrapComponent(extraComponent));
+            }
+        }
+
+        return builder.toString();
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/Permissions.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import org.bukkit.permissions.Permissible;
+
+public enum Permissions {
+
+    OPENINV("openinv"),
+    OVERRIDE("override"),
+    EXEMPT("exempt"),
+    CROSSWORLD("crossworld"),
+    SILENT("silent"),
+    SILENT_DEFAULT("silent.default", true),
+    ANYCHEST("anychest"),
+    ANY_DEFAULT("any.default", true),
+    ENDERCHEST("openender"),
+    ENDERCHEST_ALL("openenderall"),
+    SEARCH("search"),
+    SEARCH_PLAYERS_ONLINE("search.players.online"),
+    SEARCH_PLAYERS_OFFLINE("search.players.offline"),
+    SEARCH_CHUNKS_LOADED("search.chunks.loaded"),
+    SEARCH_CHUNKS_UNLOADED("search.chunks.unloaded"),
+    EDITINV("editinv"),
+    EDITENDER("editender"),
+    OPENSELF("openself"),
+    OPENONLINE("openonline"),
+    OPENOFFLINE("openoffline"),
+    SPECTATE("spectate");
+
+    private final String permission;
+    private final boolean uninheritable;
+
+    Permissions(String permission) {
+        this(permission, false);
+    }
+
+    Permissions(String permission, boolean uninheritable) {
+        this.permission = "OpenInv." + permission;
+        this.uninheritable = uninheritable;
+    }
+
+    public boolean hasPermission(Permissible permissible) {
+
+        boolean hasPermission = permissible.hasPermission(permission);
+        if (uninheritable || hasPermission || permissible.isPermissionSet(permission)) {
+            return hasPermission;
+        }
+
+        StringBuilder permissionDestroyer = new StringBuilder(permission);
+        for (int lastPeriod = permissionDestroyer.lastIndexOf("."); lastPeriod > 0;
+                lastPeriod = permissionDestroyer.lastIndexOf(".")) {
+            permissionDestroyer.delete(lastPeriod + 1, permissionDestroyer.length()).append('*');
+
+            hasPermission = permissible.hasPermission(permissionDestroyer.toString());
+            if (hasPermission || permissible.isPermissionSet(permissionDestroyer.toString())) {
+                return hasPermission;
+            }
+
+            permissionDestroyer.delete(lastPeriod, permissionDestroyer.length());
+
+        }
+
+        return permissible.hasPermission("*");
+
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/PseudoJson.java

@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * A data container for JSON-esque expressions.
+ *
+ * <p>Ex: A ChunkBucket can be expressed <code>chunks{world:world_name,x:0,z:0,radius:10,load:true}</code>. The
+ * starting "chunks" identifies it as a ChunkBucket and the content in braces contains the construction detail.
+ * However, a simpler detail, such as a MatchableItem, may be specified <code>type:IRON_SWORD</code> where "type"
+ * is both the identifier of the MatchableItem and the key of the sole value.
+ *
+ * <p>A best-effort will be made to match other start and finish demarcation techniques.
+ */
+public class PseudoJson {
+
+    private static final char[] BRACE_OPEN = new char[] { '{', '[', '(' };
+    private static final char[] BRACE_CLOSE = new char[] { '}', ']', ')' };
+    private static final Set<Character> RESERVED_CHARACTERS = new HashSet<>();
+
+    static {
+        for (char brace : BRACE_OPEN) {
+            RESERVED_CHARACTERS.add(brace);
+        }
+        for (char brace : BRACE_CLOSE) {
+            RESERVED_CHARACTERS.add(brace);
+        }
+        RESERVED_CHARACTERS.add(',');
+        RESERVED_CHARACTERS.add(':');
+    }
+
+    private final String identifier;
+    private final Map<String, String> mappings;
+
+    public PseudoJson(@NotNull String identifier) {
+        this(identifier, new HashMap<>());
+    }
+
+    public PseudoJson(@NotNull String identifier, @NotNull Map<String, String> mappings) {
+        this.identifier = identifier;
+        mappings.forEach(PseudoJson::validate);
+        this.mappings = mappings;
+    }
+
+    public @NotNull String getIdentifier() {
+        return identifier;
+    }
+
+    public @NotNull Optional<String> put(@NotNull String key, @NotNull String value) {
+        validate(key, value);
+
+        return Optional.ofNullable(this.mappings.put(key, value));
+    }
+
+    public @NotNull Optional<String> get(@NotNull String key) {
+        return Optional.ofNullable(this.mappings.get(key));
+    }
+
+    public @NotNull Map<String, String> getMappings() {
+        return Collections.unmodifiableMap(mappings);
+    }
+
+    public Optional<String> remove(@NotNull String key) {
+        return Optional.ofNullable(this.mappings.get(key));
+    }
+
+    public String asString() {
+        StringBuilder builder = new StringBuilder(identifier);
+
+        builder.append('{');
+
+        for (Iterator<Map.Entry<String, String>> iterator = mappings.entrySet().iterator(); iterator.hasNext();) {
+            Map.Entry<String, String> entry = iterator.next();
+            builder.append(entry.getKey()).append(':').append(entry.getValue());
+            if (iterator.hasNext()) {
+                builder.append(',');
+            }
+        }
+
+        builder.append('}');
+
+        return builder.toString();
+    }
+
+    @Override
+    public String toString() {
+        return asString();
+    }
+
+    private static void validate(String key, String value) {
+        if (RESERVED_CHARACTERS.stream().anyMatch(character -> key.indexOf(character) >= 0 || value.indexOf(character) >= 0)) {
+            throw new IllegalArgumentException(String.format("Primitive pseudo-JSON reserves characters %s", RESERVED_CHARACTERS));
+        }
+    }
+
+    public static PseudoJson fromString(String pseudoJson) {
+        int open = -1;
+        for (char brace : BRACE_OPEN) {
+            open = pseudoJson.indexOf(brace);
+            if (open >= 0) {
+                break;
+            }
+        }
+
+        String identifier = getIdentifier(pseudoJson, open);
+
+        int close = -1;
+        for (char brace : BRACE_CLOSE) {
+            close = pseudoJson.lastIndexOf(brace);
+            if (close >= 0) {
+                break;
+            }
+        }
+
+        if (open >= 0) {
+            if (close <= open) {
+                // Ignore bad ending brace.
+                pseudoJson = pseudoJson.substring(open + 1);
+            } else {
+                // Use only bracketed content
+                pseudoJson = pseudoJson.substring(open + 1, close);
+            }
+        }
+
+        return new PseudoJson(identifier, getMappings(pseudoJson));
+    }
+
+    private static String getIdentifier(String pseudoJson, int braceOpen) {
+        int identifierEnd;
+        if (braceOpen >= 0) {
+            identifierEnd = braceOpen;
+        } else {
+            // No quote, use first mapping.
+            identifierEnd = pseudoJson.indexOf(':');
+            if (identifierEnd == -1) {
+                // No mappings, use whole string.
+                return pseudoJson;
+            }
+        }
+
+        return pseudoJson.substring(0, identifierEnd);
+    }
+
+    private static Map<String, String> getMappings(String pseudoJson) {
+        String[] mappings = pseudoJson.split(",");
+
+        Map<String, String> data = new HashMap<>();
+        for (String mapping : mappings) {
+            String[] datum = mapping.split(":");
+            if (datum.length >= 2) {
+                data.put(datum[0], datum[1]);
+            }
+        }
+
+        return data;
+    }
+
+}

plugin/src/main/java/com/lishid/openinv/util/TabCompleter.java

@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2011-2021 lishid. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.lishid.openinv.util;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+import java.util.function.Function;
+import org.bukkit.Bukkit;
+import org.bukkit.Keyed;
+import org.bukkit.Material;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.util.StringUtil;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Utility class for common tab completions.
+ */
+public class TabCompleter {
+
+    /**
+     * Offer tab completions for whole numbers.
+     *
+     * @param argument the argument to complete
+     * @return integer options
+     */
+    public static List<String> completeInteger(@NotNull String argument) {
+        // Ensure existing argument is actually a number
+        if (!argument.isEmpty()) {
+            try {
+                Integer.parseInt(argument);
+            } catch (NumberFormatException e) {
+                return Collections.emptyList();
+            }
+        }
+
+        List<String> completions = new ArrayList<>(10);
+        for (int i = 0; i < 10; ++i) {
+            completions.add(argument + i);
+        }
+
+        return completions;
+    }
+
+    /**
+     * Offer tab completions for a given Enum.
+     *
+     * @param argument the argument to complete
+     * @param enumClazz the Enum to complete for
+     * @return the matching Enum values
+     */
+    public static List<String> completeEnum(@NotNull String argument, @NotNull Class<? extends Enum<?>> enumClazz) {
+        return completeObject(argument, Enum::name, enumClazz.getEnumConstants());
+    }
+
+    /**
+     * Offer tab completions for {@link Material Materials}.
+     *
+     * @param argument the argument to complete
+     * @return the matching {@code Material} keys
+     */
+    public static List<String> completeMaterial(@NotNull String argument) {
+        argument = argument.toLowerCase(Locale.ENGLISH);
+        List<String> completions = new ArrayList<>();
+
+        for (Material material : Material.values()) {
+            if (material.name().toLowerCase(Locale.ENGLISH).startsWith(argument)
+                    || material.getKey().toString().startsWith(argument)
+                    || material.getKey().getKey().startsWith(argument)) {
+                completions.add(material.getKey().toString());
+            }
+        }
+
+        return completions;
+    }
+
+    /**
+     * Offer tab completions for {@link Keyed} values.
+     *
+     * @param argument the argument to complete
+     * @param options the {@code Keyed} values
+     * @return the matching keys
+     */
+    public static List<String> completeKeyed(@NotNull String argument, @NotNull Keyed @NotNull [] options) {
+        argument = argument.toLowerCase(Locale.ENGLISH);
+        List<String> completions = new ArrayList<>();
+
+        for (Keyed keyed : options) {
+            if (keyed.getKey().toString().startsWith(argument)
+                    || keyed.getKey().getKey().startsWith(argument)) {
+                completions.add(keyed.getKey().toString());
+            }
+        }
+
+        return completions;
+    }
+
+    /**
+     * Offer tab completions for a given array of Strings.
+     *
+     * @param argument the argument to complete
+     * @param options the Strings which may be completed
+     * @return the matching Strings
+     */
+    public static List<String> completeString(@NotNull String argument, @NotNull String @NotNull [] options) {
+        argument = argument.toLowerCase(Locale.ENGLISH);
+        List<String> completions = new ArrayList<>();
+
+        for (String option : options) {
+            if (option.startsWith(argument)) {
+                completions.add(option);
+            }
+        }
+
+        return completions;
+    }
+
+    /**
+     * Offer tab completions for visible online Players' names.
+     *
+     * @param sender the command's sender
+     * @param argument the argument to complete
+     * @return the matching Players' names
+     */
+    public static List<String> completeOnlinePlayer(@NotNull CommandSender sender, String argument) {
+        List<String> completions = new ArrayList<>();
+        Player senderPlayer = sender instanceof Player ? (Player) sender : null;
+
+        for (Player player : Bukkit.getOnlinePlayers()) {
+            if (senderPlayer != null && !senderPlayer.canSee(player)) {
+                continue;
+            }
+
+            if (StringUtil.startsWithIgnoreCase(player.getName(), argument)) {
+                completions.add(player.getName());
+            }
+        }
+
+        return completions;
+    }
+
+    /**
+     * Offer tab completions for a given array of Objects.
+     *
+     * @param argument the argument to complete
+     * @param converter the Function for converting the Object into a comparable String
+     * @param options the Objects which may be completed
+     * @return the matching Strings
+     */
+    public static <T> List<String> completeObject(@NotNull String argument, @NotNull Function<T, String> converter, @NotNull T @NotNull [] options) {
+        argument = argument.toLowerCase(Locale.ENGLISH);
+        List<String> completions = new ArrayList<>();
+
+        for (T option : options) {
+            String optionString = converter.apply(option).toLowerCase(Locale.ENGLISH);
+            if (optionString.startsWith(argument)) {
+                completions.add(optionString);
+            }
+        }
+
+        return completions;
+    }
+
+    private TabCompleter() {}
+
+}

plugin/src/main/resources/config.yml

@@ -0,0 +1,7 @@
+config-version: 5
+settings:
+  search:
+    polls-per-tick: 5
+    max-results: 40
+  disable-saving: false
+  locale: 'en_us'

plugin/src/main/resources/de_de.yml

@@ -0,0 +1,30 @@
+messages:
+  error:
+    consoleUnsupported: 'Du kannst diesen Befehl nicht von der Konsole ausführen.'
+    lootNotGenerated: '&cBeute noch nicht erstellt! Bitte schalte &b/silentcontainer&c aus.'
+    invalidMaterial: '&cUngültiges Material: "%target%"'
+    invalidNumber: '&cUngültige Nummer: "%target%"'
+    invalidPlayer: '&cSpieler nicht gefunden.'
+    permissionOpenSelf: '&cDu darfst dein eigenes Inventar nicht öffnen.'
+    permissionEnderAll: '&cDu darfst die Endertruhen von anderen Spielern nicht öffnen.'
+    permissionExempt: '&c%target%''s Inventar ist geschützt.'
+    permissionCrossWorld: '&c%target% ist nicht in der selben Welt wie du.'
+    permissionPlayerOnline: '&cDu darfst keine Inventare von Spielern öffnen, die online sind.'
+    permissionPlayerOffline: '&cDu darfst keine Inventare von Spielern öffnen, die offline sind.'
+    commandException: '&cAn error occurred. Please check console for details.'
+  info:
+    containerBlocked: 'Du öffnest einen gesperrten Container.'
+    containerBlockedSilent: 'Du öffnest einen gesperrten Container lautlos.'
+    containerSilent: 'Du öffnest einen Container lautlos.'
+    settingState: '%setting%: %state%'
+    player:
+      noMatches: 'Keine Spieler mit %target% gefunden.'
+      matches: 'Spieler hält %target%: %detail%'
+    container:
+      noMatches: 'Keine Container mit %target% gefunden.'
+      matches: 'Container hat %target%: %detail%'
+    on: 'an'
+    off: 'aus'
+container:
+  player: '%player%''s Inventar'
+  enderchest: '%player%''s Endertruhe'