Use version dbo-upload-action v0.1.0

feat: Extract generic handler for config with ConfigurationSection

.github/labeler.yml

@@ -0,0 +1,2 @@
+prerelease:
+  - '*'

.github/workflows/dbo_test.yml

@@ -0,0 +1,38 @@
+name: Create Release Version & Publish Package
+
+on:
+  push:
+    branches: [dbo-test]
+
+jobs:
+  dbo_upload_test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download release artifact
+        id: release-artifact
+        uses: dsaltares/fetch-gh-release-asset@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          # version: tags/${{ github.event.inputs.version }}
+          regex: true
+          file: multiverse-core-(.*)\.jar
+          target: 'subdir/'
+
+      - name: Upload to dev.bukkit.org
+        uses: benwoo1110/dbo-upload-action@v0.1.0
+        with:
+          api_token: ${{ secrets.DBO_UPLOAD_API_TOKEN }}
+          project_id: 30765
+          changelog: ${{ steps.release-artifact.outputs.body }}
+          changelog_type: markdown
+          display_name: ${{ steps.release-artifact.outputs.version }}
+          game_versions: 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1
+          project_relations: >
+            [
+              {"slug": "multiverse-portals", "type": "optionalDependency"},
+              {"slug": "multiverse-netherportals", "type": "optionalDependency"},
+              {"slug": "multiverse-signportals", "type": "optionalDependency"},
+              {"slug": "multiverse-inventories", "type": "optionalDependency"}
+            ]
+          file_path: ${{ github.workspace }}/subdir/multiverse-core-${{ steps.release-artifact.outputs.version }}.jar
+          debug: true

.github/workflows/pr_labeler.yml

@@ -0,0 +1,17 @@
+name: "Pull Request Labeler"
+
+on:
+  pull_request_target:
+    types: [opened]
+    branches: [main]
+
+jobs:
+  prerelease_labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v4
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/promote_release.yml

@@ -0,0 +1,90 @@
+name: Manually promote last prerelease to release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to promote'
+        required: true
+      version-bump:
+        description: 'Version bump to apply - should usually match the version bump used for the prerelease since last release'
+        required: true
+        type: choice
+        options:
+          - 'patch'
+          - 'minor'
+          - 'major'
+
+jobs:
+  manually_promote_release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Verify input version is prerelease
+        run: |
+          if [[ "${{ github.event.inputs.version }}" != *"pre"* ]]; then
+              echo "Version must be a prerelease"
+              exit 1
+          fi
+
+      - name: Get release info
+        id: get-release
+        uses: cardinalby/git-get-release-action@v1
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          tag: ${{ github.event.inputs.version }}
+
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ steps.get-release.outputs.tag_name }}
+
+      - uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'adopt'
+          cache: gradle
+
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Remove prerelease tag
+        run: |
+          echo "Removing prerelease tag from version"
+          echo "VERSION=$(echo ${{ steps.get-release.outputs.tag_name }} | sed -E 's/-pre.*//')" >> $GITHUB_ENV
+
+      - name: Build
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: clean build -x test -x checkstyleMain -x checkstyleTest
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_VERSION: ${{ env.VERSION }}
+
+      - name: Create release
+        id: release
+        uses: Multiverse/release-on-push-action@skip_prs
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          bump_version_scheme: ${{ github.event.inputs.version-bump }}
+          tag_prefix: ''
+          release_name: "<RELEASE_VERSION>"
+          use_github_release_notes: true
+          ref: ${{ steps.get-release.outputs.target_commitish }}
+          skip_prs: true
+
+      - name: Publish package
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: publish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_VERSION: ${{ env.VERSION }}
+
+      - name: Upload release artifact
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: build/libs/multiverse-core-${{ env.VERSION }}.jar
+          asset_name: multiverse-core-${{ steps.release.outputs.tag_name }}.jar
+          tag: ${{ steps.release.outputs.tag_name }}

.github/workflows/publish.yml

@@ -1,53 +0,0 @@
-name: Publish package to GitHub Packages
-
-on:
-  release:
-    types: [created]
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: actions/setup-java@v3
-        with:
-          java-version: '11'
-          distribution: 'adopt'
-          cache: gradle
-
-      - name: Get release
-        id: get_release
-        uses: bruceadams/get-release@v1.3.2
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
-
-      - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@v1
-
-      - name: Publish package
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: publish
-        env:
-          GITHUB_VERSION: ${{ steps.get_release.outputs.tag_name }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Fix the upload URL
-        run: |
-          UPLOAD_URL=${{ steps.get_release.outputs.upload_url }}
-          UPLOAD_URL=${UPLOAD_URL//\{?name,label\}}
-          echo "UPLOAD_URL=${UPLOAD_URL}" >> $GITHUB_ENV
-
-      - name: Upload release artifact
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ env.UPLOAD_URL }}
-          asset_path: build/libs/multiverse-core-${{ steps.get_release.outputs.tag_name }}.jar
-          asset_name: multiverse-core-${{ steps.get_release.outputs.tag_name }}.jar
-          asset_content_type: application/java-archive

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Create Release Version
+name: Create Release Version & Publish Package
 
 on:
   push:
@@ -12,7 +12,7 @@ jobs:
 
       - uses: actions/setup-java@v3
         with:
-          java-version: '11'
+          java-version: '17'
           distribution: 'adopt'
           cache: gradle
 
@@ -27,11 +27,38 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Create release
-        uses: rymndhng/release-on-push-action@v0.27.0
+        id: release
+        uses: Multiverse/release-on-push-action@support_prerelease
         env:
-          GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           bump_version_scheme: norelease
           tag_prefix: ''
-          release_name: "Release <RELEASE_VERSION>"
+          release_name: "<RELEASE_VERSION>"
           use_github_release_notes: true
+
+      - name: Modify version scheme
+        run: |
+            if [[ "${{ steps.release.outputs.tag_name }}" == *"pre"* ]]; then
+                echo "Replacing prerelease version scheme with SNAPSHOT"
+                echo "VERSION=$(echo ${{ steps.release.outputs.tag_name }} | sed -E 's/-pre.*/-SNAPSHOT/')" >> $GITHUB_ENV
+            else
+                echo "Using release version scheme"
+                echo "VERSION=${{ steps.release.outputs.tag_name }}" >> $GITHUB_ENV
+            fi
+
+      - name: Publish package
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: publish
+        env:
+          GITHUB_VERSION: ${{ env.VERSION }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Upload release artifact
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: build/libs/multiverse-core-${{ env.VERSION }}.jar
+          asset_name: multiverse-core-${{ steps.release.outputs.tag_name }}.jar
+          tag: ${{ steps.release.outputs.tag_name }}

.github/workflows/require_label.yml

@@ -15,4 +15,4 @@ jobs:
         with:
           mode: exactly
           count: 1
-          labels: "release:major, release:minor, release:patch, no release"
+          labels: "release:major, release:minor, release:patch, no version bump"

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
 
       - uses: actions/setup-java@v3
         with:
-          java-version: '11'
+          java-version: '17'
           distribution: 'adopt'
           cache: gradle
 
@@ -24,6 +24,13 @@ jobs:
       - name: Run unit tests
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: build
+          arguments: build -x checkstyleMain -x checkstyleTest -x javadoc
         env:
+          GITHUB_VERSION: pr${{ github.event.pull_request.number }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Artifact output
+        uses: actions/upload-artifact@v3
+        with:
+          name: multiverse-core-pr${{ github.event.pull_request.number }}
+          path: build/libs/multiverse-core-pr${{ github.event.pull_request.number }}.jar

build.gradle

@@ -5,16 +5,23 @@ plugins {
     id 'maven-publish'
     id 'checkstyle'
     id 'com.github.johnrengelman.shadow' version '7.1.2'
+    id "org.jetbrains.kotlin.jvm" version "1.8.10"
 }
 
 version = System.getenv('GITHUB_VERSION') ?: 'local'
 group = 'com.onarandombox.multiversecore'
 description = 'Multiverse-Core'
 
-java.sourceCompatibility = JavaVersion.VERSION_11
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+}
 
 repositories {
     mavenLocal()
+    mavenCentral()
+
     maven {
         url = uri('https://hub.spigotmc.org/nexus/content/repositories/snapshots/')
     }
@@ -38,35 +45,90 @@ repositories {
     maven {
         url = uri('https://repo.maven.apache.org/maven2/')
     }
+
+    maven {
+        name = 'aikar repo'
+        url = uri('https://repo.aikar.co/content/groups/aikar/')
+    }
+
+    maven {
+        name = 'glaremasters repo'
+        url = 'https://repo.glaremasters.me/repository/towny/'
+    }
+    maven {
+        name = 'PlaceholderAPI'
+        url = 'https://repo.extendedclip.com/content/repositories/placeholderapi/'
+    }
+}
+
+configurations {
+    oldTestImplementation.extendsFrom implementation
+    oldTestRuntime.extendsFrom runtime
+    relocatedApi
+    compileClasspath.extendsFrom relocatedApi
+    runtimeClasspath.extendsFrom relocatedApi
+    testCompileClasspath.extendsFrom relocatedApi
+    testRuntimeClasspath.extendsFrom relocatedApi
+    oldTestCompileClasspath.extendsFrom relocatedApi
+    oldTestRuntimeClasspath.extendsFrom relocatedApi
 }
 
 dependencies {
-    implementation('org.bukkit:bukkit:1.13.2-R0.1-SNAPSHOT') {
-        exclude group: 'junit', module: 'junit'
-    }
+    compileOnly 'org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT'
 
-    implementation('com.github.MilkBowl:VaultAPI:1.7') {
+    // Economy
+    implementation('com.github.MilkBowl:VaultAPI:1.7.1') {
         exclude group: 'org.bukkit', module: 'bukkit'
     }
 
-    api('me.main__.util:SerializationConfig:1.7') {
-        exclude group: 'org.bukkit', module: 'bukkit'
-    }
-    api('com.pneumaticraft.commandhandler:CommandHandler:11') {
-        exclude group: 'org.bukkit', module: 'bukkit'
-        exclude group: 'junit', module: 'junit'
-    }
-    api 'com.dumptruckman.minecraft:buscript:2.0-SNAPSHOT'
-    api 'org.bstats:bstats-bukkit:2.2.1'
-    api('com.dumptruckman.minecraft:Logging:1.1.1') {
-        exclude group: 'junit', module: 'junit'
-    }
-    api 'de.themoep.idconverter:mappings:1.2-SNAPSHOT'
-    api 'org.jetbrains:annotations:16.0.2'
+    // PlaceholderAPI
+    implementation 'me.clip:placeholderapi:2.11.3'
 
-    testImplementation 'junit:junit:4.12'
-    testImplementation 'org.mockito:mockito-core:3.11.2'
-    testImplementation 'commons-io:commons-io:2.4'
+    // Command Framework
+    relocatedApi 'co.aikar:acf-paper:0.5.1-SNAPSHOT'
+
+    // Config
+    relocatedApi('me.main__.util:SerializationConfig:1.7') {
+        exclude group: 'org.bukkit', module: 'bukkit'
+    }
+    relocatedApi('io.github.townyadvanced.commentedconfiguration:CommentedConfiguration:1.0.1') {
+        exclude group: 'org.spigotmc', module: 'spigot-api'
+    }
+
+    // Utils
+    relocatedApi 'io.vavr:vavr:0.10.4'
+    relocatedApi 'org.glassfish.hk2:hk2-locator:3.0.3'
+    relocatedApi('com.dumptruckman.minecraft:Logging:1.1.1') {
+        exclude group: 'junit', module: 'junit'
+    }
+    relocatedApi 'de.themoep.idconverter:mappings:1.2-SNAPSHOT'
+    relocatedApi 'org.bstats:bstats-bukkit:2.2.1'
+    relocatedApi 'net.minidev:json-smart:2.4.8'
+    relocatedApi 'org.jetbrains:annotations:22.0.0'
+    relocatedApi 'io.papermc:paperlib:1.0.8'
+
+    // Tests
+    testImplementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.8.10'
+    testImplementation 'com.github.seeseemelk:MockBukkit-v1.19:2.141.0'
+    testImplementation('com.googlecode.json-simple:json-simple:1.1.1') {
+        exclude group: 'junit', module: 'junit'
+    }
+    testImplementation 'org.jetbrains.kotlin:kotlin-test'
+    testImplementation 'com.natpryce:hamkrest:1.8.0.1'
+    testImplementation 'org.mockito.kotlin:mockito-kotlin:4.1.0'
+
+    // Old Tests
+    oldTestImplementation 'org.spigotmc:spigot-api:1.19.3-R0.1-SNAPSHOT'
+    oldTestImplementation('com.googlecode.json-simple:json-simple:1.1.1') {
+        exclude group: 'junit', module: 'junit'
+    }
+    oldTestImplementation 'junit:junit:4.13.1'
+    oldTestImplementation 'org.mockito:mockito-core:3.11.2'
+    oldTestImplementation 'commons-io:commons-io:2.7'
+
+    // Annotation Processors
+    annotationProcessor 'org.glassfish.hk2:hk2-metadata-generator:3.0.3'
+    testAnnotationProcessor 'org.glassfish.hk2:hk2-metadata-generator:3.0.3'
 }
 
 
@@ -91,6 +153,19 @@ configurations {
     }
 }
 
+
+sourceSets {
+    oldTest {
+        java {
+            compileClasspath += main.output
+            runtimeClasspath += main.output
+            srcDir file('src/old-test/java')
+        }
+        resources.srcDir file('src/old-test/resources')
+    }
+}
+
+
 publishing {
     publications {
         maven(MavenPublication) {
@@ -124,6 +199,19 @@ task prepareSource(type: Sync) {
 compileJava {
     source = prepareSource.outputs
 }
+tasks.withType(JavaCompile) {
+    configure(options) {
+        options.compilerArgs << '-Aorg.glassfish.hk2.metadata.location=META-INF/hk2-locator/Multiverse-Core'
+    }
+}
+
+compileKotlin {
+    // We're not using Kotlin in the plugin itself, just tests!
+    enabled = false
+}
+configurations.findAll { !it.name.startsWith('test') }.each {
+    it.exclude group: 'org.jetbrains.kotlin', module: 'kotlin-stdlib-jdk8'
+}
 
 processResources {
     def props = [version: "${project.version}"]
@@ -155,19 +243,44 @@ javadoc {
 project.configurations.api.canBeResolved = true
 
 shadowJar {
-    relocate 'me.main__.util', 'com.onarandombox.serializationconfig'
-    relocate 'com.pneumaticraft.commandhandler', 'com.onarandombox.commandhandler'
-    relocate 'buscript', 'com.onarandombox.buscript'
-    relocate 'org.bstats', 'com.onarandombox.bstats'
+    relocate 'co.aikar.commands', 'com.onarandombox.acf'
     relocate 'com.dumptruckman.minecraft.util.Logging', 'com.onarandombox.MultiverseCore.utils.CoreLogging'
     relocate 'com.dumptruckman.minecraft.util.DebugLog', 'com.onarandombox.MultiverseCore.utils.DebugFileLogger'
-    relocate 'org.codehaus.jettison', 'com.onarandombox.jettison'
     relocate 'de.themoep.idconverter', 'com.onarandombox.idconverter'
+    relocate 'io.github.townyadvanced.commentedconfiguration', 'com.onarandombox.commentedconfiguration'
+    relocate 'me.main__.util', 'com.onarandombox.serializationconfig'
+    relocate 'org.bstats', 'com.onarandombox.bstats'
+    relocate 'com.sun', 'com.onarandombox.sun'
+    relocate 'net.minidev', 'com.onarandombox.minidev'
+    relocate 'org.objectweb', 'com.onarandombox.objectweb'
+    relocate 'io.vavr', 'com.onarandombox.vavr'
+    relocate 'jakarta', 'com.onarandombox.jakarta'
+    relocate 'javassist', 'com.onarandombox.javassist'
+    relocate 'org.aopalliance', 'com.onarandombox.aopalliance'
+    relocate 'org.glassfish', 'com.onarandombox.glassfish'
+    relocate 'org.jvnet', 'com.onarandombox.jvnet'
+    relocate 'org.intellij', 'com.onarandombox.intellij'
+    relocate 'org.jetbrains', 'com.onarandombox.jetbrains'
+    relocate 'io.papermc.lib', 'com.onarandombox.paperlib'
 
-    configurations = [project.configurations.api]
+    configurations = [project.configurations.api, project.configurations.relocatedApi]
 
     archiveFileName = "$baseName-$version.$extension"
+
+    dependencies {
+        exclude(dependency {
+            it.moduleGroup == 'org.jetbrains.kotlin'
+        })
+    }
 }
 
 build.dependsOn shadowJar
 jar.enabled = false
+
+test {
+    useJUnitPlatform()
+
+    testLogging {
+        exceptionFormat = 'full'
+    }
+}

config/mv_checks.xml

@@ -69,7 +69,7 @@
         <module name="TypeName"/>
         <module name="AvoidStarImport">
             <property name="severity" value="warning"/>
-            <property name="excludes" value="com.onarandombox.MultiverseCore.utils,com.onarandombox.MultiverseCore.configuration,com.onarandombox.MultiverseCore.commands,com.onarandombox.MultiverseCore.destination"/>
+            <property name="excludes" value="com.onarandombox.MultiverseCore.utils,com.onarandombox.MultiverseCore.configuration,com.onarandombox.MultiverseCore.commandsold,com.onarandombox.MultiverseCore.destination"/>
         </module>
         <module name="IllegalImport"/>
         <module name="RedundantImport"/>

src/main/java/co/aikar/commands/OpenBukkitCommandIssuer.java

@@ -0,0 +1,13 @@
+package co.aikar.commands;
+
+import org.bukkit.command.CommandSender;
+
+/**
+ * Exists just so we can extend BukkitCommandIssuer since it has a package-private constructor.
+ */
+public abstract class OpenBukkitCommandIssuer extends BukkitCommandIssuer {
+
+    protected OpenBukkitCommandIssuer(BukkitCommandManager manager, CommandSender sender) {
+        super(manager, sender);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/MultiverseCoreConfiguration.java

@@ -1,385 +0,0 @@
-package com.onarandombox.MultiverseCore;
-
-import java.util.Map;
-
-import com.dumptruckman.minecraft.util.Logging;
-import com.onarandombox.MultiverseCore.api.MultiverseCoreConfig;
-import com.onarandombox.MultiverseCore.event.MVDebugModeEvent;
-import me.main__.util.SerializationConfig.NoSuchPropertyException;
-import me.main__.util.SerializationConfig.Property;
-import me.main__.util.SerializationConfig.SerializationConfig;
-import org.bukkit.Bukkit;
-
-/**
- * Our configuration.
- */
-public class MultiverseCoreConfiguration extends SerializationConfig implements MultiverseCoreConfig {
-    private static MultiverseCoreConfiguration instance;
-
-    /**
-     * Sets the statically saved instance.
-     * @param instance The new instance.
-     */
-    public static void setInstance(MultiverseCoreConfiguration instance) {
-        MultiverseCoreConfiguration.instance = instance;
-    }
-
-    /**
-     * @return True if the static instance of config is set.
-     */
-    public static boolean isSet() {
-        return instance != null;
-    }
-
-    /**
-     * Gets the statically saved instance.
-     * @return The statically saved instance.
-     */
-    public static MultiverseCoreConfiguration getInstance() {
-        if (instance == null)
-            throw new IllegalStateException("The instance wasn't set!");
-        return instance;
-    }
-
-    @Property
-    private volatile boolean enforceaccess;
-    @Property
-    private volatile boolean prefixchat;
-    @Property
-    private volatile String prefixchatformat;
-    @Property
-    private volatile boolean useasyncchat;
-    @Property
-    private volatile boolean teleportintercept;
-    @Property
-    private volatile boolean firstspawnoverride;
-    @Property
-    private volatile boolean displaypermerrors;
-    @Property
-    private volatile boolean enablebuscript;
-    @Property
-    private volatile int globaldebug;
-    @Property
-    private volatile boolean silentstart;
-    @Property
-    private volatile int messagecooldown;
-    @Property
-    private volatile double version;
-    @Property
-    private volatile String firstspawnworld;
-    @Property
-    private volatile int teleportcooldown;
-    @Property
-    private volatile boolean defaultportalsearch;
-    @Property
-    private volatile int portalsearchradius;
-    @Property
-    private volatile boolean autopurge;
-    @Property
-    private volatile boolean idonotwanttodonate;
-
-    public MultiverseCoreConfiguration() {
-        super();
-        MultiverseCoreConfiguration.setInstance(this);
-    }
-
-    public MultiverseCoreConfiguration(Map<String, Object> values) {
-        super(values);
-        MultiverseCoreConfiguration.setInstance(this);
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    protected void setDefaults() {
-        // BEGIN CHECKSTYLE-SUPPRESSION: MagicNumberCheck
-        enforceaccess = false;
-        useasyncchat = true;
-        prefixchat = false;
-        prefixchatformat = "[%world%]%chat%";
-        teleportintercept = true;
-        firstspawnoverride = true;
-        displaypermerrors = true;
-        enablebuscript = true;
-        globaldebug = 0;
-        messagecooldown = 5000;
-        teleportcooldown = 1000;
-        this.version = 2.9;
-        silentstart = false;
-        defaultportalsearch = true;
-        portalsearchradius = 128;
-        autopurge = true;
-        idonotwanttodonate = false;
-        // END CHECKSTYLE-SUPPRESSION: MagicNumberCheck
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean setConfigProperty(String property, String value) {
-        try {
-            return this.setProperty(property, value, true);
-        } catch (NoSuchPropertyException e) {
-            return false;
-        }
-    }
-
-    // And here we go:
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getEnforceAccess() {
-        return this.enforceaccess;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setEnforceAccess(boolean enforceAccess) {
-        this.enforceaccess = enforceAccess;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getPrefixChat() {
-        return this.prefixchat;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setPrefixChat(boolean prefixChat) {
-        this.prefixchat = prefixChat;
-    }
-    
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getPrefixChatFormat() {
-        return this.prefixchatformat;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setPrefixChatFormat(String prefixChatFormat) {
-        this.prefixchatformat = prefixChatFormat;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getTeleportIntercept() {
-        return this.teleportintercept;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setTeleportIntercept(boolean teleportIntercept) {
-        this.teleportintercept = teleportIntercept;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getFirstSpawnOverride() {
-        return this.firstspawnoverride;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setFirstSpawnOverride(boolean firstSpawnOverride) {
-        this.firstspawnoverride = firstSpawnOverride;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getDisplayPermErrors() {
-        return this.displaypermerrors;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean getEnableBuscript() {
-        return this.enablebuscript;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setEnableBuscript(boolean enableBuscript) {
-        this.enablebuscript = enableBuscript;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setDisplayPermErrors(boolean displayPermErrors) {
-        this.displaypermerrors = displayPermErrors;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public int getGlobalDebug() {
-        return this.globaldebug;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setGlobalDebug(int globalDebug) {
-        this.globaldebug = globalDebug;
-        Logging.setDebugLevel(globalDebug);
-        Bukkit.getPluginManager().callEvent(new MVDebugModeEvent(globalDebug));
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public int getMessageCooldown() {
-        return this.messagecooldown;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setMessageCooldown(int messageCooldown) {
-        this.messagecooldown = messageCooldown;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public double getVersion() {
-        return this.version;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setVersion(int version) {
-        this.version = version;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getFirstSpawnWorld() {
-        return this.firstspawnworld;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setFirstSpawnWorld(String firstSpawnWorld) {
-        this.firstspawnworld = firstSpawnWorld;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public int getTeleportCooldown() {
-        return this.teleportcooldown;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setTeleportCooldown(int teleportCooldown) {
-        this.teleportcooldown = teleportCooldown;
-    }
-
-    @Override
-    public void setUseAsyncChat(boolean useAsyncChat) {
-        this.useasyncchat = useAsyncChat;
-    }
-
-    @Override
-    public boolean getUseAsyncChat() {
-        return this.useasyncchat;
-    }
-
-    @Override
-    public void setSilentStart(boolean silentStart) {
-        Logging.setShowingConfig(!silentStart);
-        this.silentstart = silentStart;
-    }
-
-    @Override
-    public boolean getSilentStart() {
-        return silentstart;
-    }
-
-    @Override
-    public void setUseDefaultPortalSearch(boolean useDefaultPortalSearch) {
-        defaultportalsearch = useDefaultPortalSearch;
-    }
-
-    @Override
-    public boolean isUsingDefaultPortalSearch() {
-        return defaultportalsearch;
-    }
-
-    @Override
-    public void setPortalSearchRadius(int searchRadius) {
-        this.portalsearchradius = searchRadius;
-    }
-
-    @Override
-    public int getPortalSearchRadius() {
-        return portalsearchradius;
-    }
-
-    @Override
-    public boolean isAutoPurgeEnabled() {
-        return autopurge;
-    }
-
-    @Override
-    public void setAutoPurgeEnabled(boolean autopurge) {
-        this.autopurge = autopurge;
-    }
-
-    @Override
-    public boolean isShowingDonateMessage() {
-        return !idonotwanttodonate;
-    }
-
-    @Override
-    public void setShowDonateMessage(boolean showDonateMessage) {
-        this.idonotwanttodonate = !showDonateMessage;
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/MultiverseCorePluginBinder.java

@@ -0,0 +1,18 @@
+package com.onarandombox.MultiverseCore;
+
+import com.onarandombox.MultiverseCore.api.MVCore;
+import com.onarandombox.MultiverseCore.inject.binder.JavaPluginBinder;
+import org.glassfish.hk2.utilities.binding.ScopedBindingBuilder;
+import org.jetbrains.annotations.NotNull;
+
+class MultiverseCorePluginBinder extends JavaPluginBinder<MultiverseCore> {
+
+    protected MultiverseCorePluginBinder(@NotNull MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Override
+    protected ScopedBindingBuilder<MultiverseCore> bindPluginClass(ScopedBindingBuilder<MultiverseCore> bindingBuilder) {
+        return super.bindPluginClass(bindingBuilder).to(MVCore.class).to(MultiverseCore.class);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/anchor/AnchorManager.java

@@ -5,15 +5,20 @@
  * with this project.                                                         *
  ******************************************************************************/
 
-package com.onarandombox.MultiverseCore.utils;
+package com.onarandombox.MultiverseCore.anchor;
 
 import com.dumptruckman.minecraft.util.Logging;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.LocationManipulation;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import jakarta.inject.Inject;
 import org.bukkit.Location;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.jvnet.hk2.annotations.Service;
 
 import java.io.File;
 import java.io.IOException;
@@ -22,18 +27,29 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
-import java.util.logging.Level;
 
 /**
  * Manages anchors.
  */
+@Service
 public class AnchorManager {
-    private MultiverseCore plugin;
     private Map<String, Location> anchors;
     private FileConfiguration anchorConfig;
 
-    public AnchorManager(MultiverseCore plugin) {
+    private final Plugin plugin;
+    private final LocationManipulation locationManipulation;
+    private final MVCoreConfig config;
+
+    @Inject
+    public AnchorManager(
+            MultiverseCore plugin,
+            LocationManipulation locationManipulation,
+            MVCoreConfig config
+    ) {
         this.plugin = plugin;
+        this.locationManipulation = locationManipulation;
+        this.config = config;
+
         this.anchors = new HashMap<String, Location>();
     }
 
@@ -48,7 +64,7 @@ public class AnchorManager {
         Set<String> anchorKeys = anchorsSection.getKeys(false);
         for (String key : anchorKeys) {
             //world:x,y,z:pitch:yaw
-            Location anchorLocation = plugin.getLocationManipulation().stringToLocation(anchorsSection.getString(key, ""));
+            Location anchorLocation = this.locationManipulation.stringToLocation(anchorsSection.getString(key, ""));
             if (anchorLocation != null) {
                 Logging.config("Loading anchor:  '%s'...", key);
                 this.anchors.put(key, anchorLocation);
@@ -98,7 +114,7 @@ public class AnchorManager {
      * @return True if the anchor was successfully saved.
      */
     public boolean saveAnchorLocation(String anchor, String location) {
-        Location parsed = plugin.getLocationManipulation().stringToLocation(location);
+        Location parsed = this.locationManipulation.stringToLocation(location);
         return parsed != null && this.saveAnchorLocation(anchor, parsed);
     }
 
@@ -112,7 +128,7 @@ public class AnchorManager {
         if (l == null) {
             return false;
         }
-        this.anchorConfig.set("anchors." + anchor, plugin.getLocationManipulation().locationToString(l));
+        this.anchorConfig.set("anchors." + anchor, this.locationManipulation.locationToString(l));
         this.anchors.put(anchor, l);
         return this.saveAnchors();
     }
@@ -144,8 +160,8 @@ public class AnchorManager {
             // Add to the list if we're not enforcing access
             // OR
             // We are enforcing access and the user has the permission.
-            if (!this.plugin.getMVConfig().getEnforceAccess() ||
-                    (this.plugin.getMVConfig().getEnforceAccess() && p.hasPermission(worldPerm))) {
+            if (!config.getEnforceAccess() ||
+                    (config.getEnforceAccess() && p.hasPermission(worldPerm))) {
                 myAnchors.add(anchor);
             } else {
                 Logging.finer(String.format("Not adding anchor %s to the list, user %s doesn't have the %s " +

src/main/java/com/onarandombox/MultiverseCore/anchor/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * this package contains the classes that are used for the anchor system.
+ */
+package com.onarandombox.MultiverseCore.anchor;

src/main/java/com/onarandombox/MultiverseCore/api/BlockSafety.java

@@ -4,10 +4,12 @@ import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.entity.Minecart;
 import org.bukkit.entity.Vehicle;
+import org.jvnet.hk2.annotations.Contract;
 
 /**
  * Used to get block/location-related information.
  */
+@Contract
 public interface BlockSafety {
     /**
      * This function checks whether the block at the given coordinates are above air or not.

src/main/java/com/onarandombox/MultiverseCore/api/Core.java

@@ -1,245 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.api;
-
-import buscript.Buscript;
-import com.onarandombox.MultiverseCore.commandtools.queue.CommandQueueManager;
-import com.onarandombox.MultiverseCore.destination.DestinationFactory;
-import com.onarandombox.MultiverseCore.utils.AnchorManager;
-import com.onarandombox.MultiverseCore.utils.MVEconomist;
-import com.onarandombox.MultiverseCore.utils.MVPermissions;
-import com.onarandombox.MultiverseCore.utils.MVPlayerSession;
-import com.onarandombox.MultiverseCore.utils.SimpleBlockSafety;
-import com.onarandombox.MultiverseCore.utils.SimpleLocationManipulation;
-import com.onarandombox.MultiverseCore.utils.SimpleSafeTTeleporter;
-import com.onarandombox.MultiverseCore.utils.VaultHandler;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.bukkit.entity.Player;
-
-/**
- * Multiverse 2 Core API
- * <p>
- * This API contains a bunch of useful things you can get out of Multiverse in general!
- */
-public interface Core {
-
-    /**
-     * Returns the Vault handler used by Multiverse.  The returned object will have all methods necessary for
-     * interfacing with Vault.
-     *
-     * @return the Vault handler for Multiverse.
-     * @deprecated we are now using {@link #getEconomist()} for all economy needs.
-     */
-    @Deprecated
-    VaultHandler getVaultHandler();
-
-    /**
-     * Retrieves Multiverse's friendly economist. The economist can be used for dealing with economies without
-     * worrying about any of the messy details.
-     *
-     * @return the economy manager for Multiverse.
-     */
-    MVEconomist getEconomist();
-
-    /**
-     * Reloads the Multiverse Configuration files:
-     * worlds.yml and config.yml.
-     */
-    void loadConfigs();
-
-    /**
-     * Gets the Multiverse message system. This allows you to send messages
-     * to users at specified intervals.
-     *
-     * @return The loaded {@link MultiverseMessaging}.
-     */
-    MultiverseMessaging getMessaging();
-
-    /**
-     * Gets the {@link MVPlayerSession} for the given player.
-     * This will also create a player session if one does not exist
-     * for a player.
-     *
-     * @param player The player's session to grab.
-     *
-     * @return The corresponding {@link MVPlayerSession}.
-     */
-    MVPlayerSession getPlayerSession(Player player);
-
-    /**
-     * Multiverse uses an advanced permissions setup, this object
-     * simplifies getting/setting permissions.
-     *
-     * @return A non-null {@link MVPermissions}.
-     */
-    MVPermissions getMVPerms();
-
-    /**
-     * Multiverse uses {@link CommandHandler} to make adding and using commands
-     * a piece of cake.
-     *
-     * @return A non-null {@link CommandHandler}.
-     */
-    CommandHandler getCommandHandler();
-
-    /**
-     * Manager for command that requires /mv confirm before execution.
-     *
-     * @return A non-null {@link CommandQueueManager}.
-     * @deprecated To be moved to new command manager in 5.0.0
-     */
-    @Deprecated
-    CommandQueueManager getCommandQueueManager();
-
-    /**
-     * Gets the factory class responsible for loading many different destinations
-     * on demand.
-     *
-     * @return A valid {@link DestinationFactory}.
-     */
-    DestinationFactory getDestFactory();
-
-    /**
-     * Gets the primary class responsible for managing Multiverse Worlds.
-     *
-     * @return {@link MVWorldManager}.
-     */
-    MVWorldManager getMVWorldManager();
-
-    /**
-     * Saves all configs.
-     *
-     * @return Whether the config was successfully saved
-     */
-    boolean saveMVConfigs();
-
-    /**
-     * Gets the {@link AnchorManager}.
-     *
-     * @return The {@link AnchorManager}
-     */
-    AnchorManager getAnchorManager();
-
-    /**
-     * Previously used by queued commands to regenerate a world on a delay.
-     * Do not use api method for any other purpose.
-     *
-     * @param name          Name of the world to regenerate
-     * @param useNewSeed    If a new seed should be used
-     * @param randomSeed    If the new seed should be random
-     * @param seed          The seed of the world.
-     *
-     * @return True if success, false if fail.
-     *
-     * @deprecated Use {@link MVWorldManager#regenWorld(String, boolean, boolean, String, boolean)} instead.
-     */
-    @Deprecated
-    Boolean regenWorld(String name, Boolean useNewSeed, Boolean randomSeed, String seed);
-
-    /**
-     * Used by queued commands to regenerate a world on a delay.
-     * Do not use api method for any other purpose.
-     *
-     * @param name          Name of the world to regenerate
-     * @param useNewSeed    If a new seed should be used
-     * @param randomSeed    If the new seed should be random
-     * @param seed          The seed of the world.
-     * @param keepGameRules If GameRules should be kept on world regen.
-     *
-     * @return True if success, false if fail.
-     *
-     * @deprecated Use {@link MVWorldManager#regenWorld(String, boolean, boolean, String, boolean)} instead.
-     */
-    @Deprecated
-    Boolean regenWorld(String name, Boolean useNewSeed, Boolean randomSeed, String seed, Boolean keepGameRules);
-
-    /**
-     * Decrements the number of plugins that have specifically hooked into core.
-     */
-    void decrementPluginCount();
-
-    /**
-     * Increments the number of plugins that have specifically hooked into core.
-     */
-    void incrementPluginCount();
-
-    /**
-     * Returns the number of plugins that have specifically hooked into core.
-     *
-     * @return The number if plugins that have hooked into core.
-     */
-    int getPluginCount();
-
-    /**
-     * Parse the Authors Array into a readable String with ',' and 'and'.
-     *
-     * @return The readable authors-{@link String}
-     */
-    String getAuthors();
-
-    /**
-     * Gets the {@link BlockSafety} this {@link Core} is using.
-     * @return The {@link BlockSafety} this {@link Core} is using.
-     * @see BlockSafety
-     * @see SimpleBlockSafety
-     */
-    BlockSafety getBlockSafety();
-
-    /**
-     * Sets the {@link BlockSafety} this {@link Core} is using.
-     * @param blockSafety The new {@link BlockSafety}.
-     * @see BlockSafety
-     * @see SimpleBlockSafety
-     */
-    void setBlockSafety(BlockSafety blockSafety);
-
-    /**
-     * Gets the {@link LocationManipulation} this {@link Core} is using.
-     * @return The {@link LocationManipulation} this {@link Core} is using.
-     * @see LocationManipulation
-     * @see SimpleLocationManipulation
-     */
-    LocationManipulation getLocationManipulation();
-
-    /**
-     * Sets the {@link LocationManipulation} this {@link Core} is using.
-     * @param locationManipulation The new {@link LocationManipulation}.
-     * @see LocationManipulation
-     * @see SimpleLocationManipulation
-     */
-    void setLocationManipulation(LocationManipulation locationManipulation);
-
-    /**
-     * Gets the {@link SafeTTeleporter} this {@link Core} is using.
-     * @return The {@link SafeTTeleporter} this {@link Core} is using.
-     * @see SafeTTeleporter
-     * @see SimpleSafeTTeleporter
-     */
-    SafeTTeleporter getSafeTTeleporter();
-
-    /**
-     * Sets the {@link SafeTTeleporter} this {@link Core} is using.
-     * @param safeTTeleporter The new {@link SafeTTeleporter}.
-     * @see SafeTTeleporter
-     * @see SimpleSafeTTeleporter
-     */
-    void setSafeTTeleporter(SafeTTeleporter safeTTeleporter);
-
-    /**
-     * Gets the {@link MultiverseCoreConfig}.
-     * @return The configuration.
-     */
-    MultiverseCoreConfig getMVConfig();
-
-    /**
-     * Gets the buscript object for Multiverse.  This is what handles Javascript processing.
-     *
-     * @return The Multiverse buscript object.
-     */
-    Buscript getScriptAPI();
-}

src/main/java/com/onarandombox/MultiverseCore/api/Destination.java

@@ -0,0 +1,58 @@
+package com.onarandombox.MultiverseCore.api;
+
+import java.util.Collection;
+
+import co.aikar.commands.BukkitCommandIssuer;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jvnet.hk2.annotations.Contract;
+
+@Contract
+public interface Destination<T extends DestinationInstance> {
+    /**
+     * Returns the identifier or prefix that is required for this destination.
+     *
+     * <p>Portals have a prefix of "p" for example and OpenWarp (third party plugin) uses "ow". This is derived from a
+     * hash and cannot have duplicate values. Read that as your plugin cannot use 'p' because it's already used.
+     * Please check the wiki when adding a custom destination!</p>
+     *
+     * @return The identifier or prefix that is required for this destination.
+     */
+    @NotNull String getIdentifier();
+
+    /**
+     * Returns the destination instance for the given destination parameters.
+     *
+     * @param destinationParams The destination parameters. ex: p:MyPortal:nw
+     * @return The destination instance, or null if the destination parameters are invalid.
+     */
+    @Nullable T getDestinationInstance(@Nullable String destinationParams);
+
+    /**
+     * Returns a list of possible destinations for the given destination parameters.
+     *
+     * @param issuer            The command issuer.
+     * @param destinationParams The destination parameters. ex: p:MyPortal:nw
+     * @return A list of possible destinations.
+     */
+    @NotNull Collection<String> suggestDestinations(@NotNull BukkitCommandIssuer issuer, @Nullable String destinationParams);
+
+    /**
+     * Should the Multiverse SafeTeleporter be used?
+     *
+     * <p>If not, MV will blindly take people to the location specified.</p>
+     *
+     * @return True if the SafeTeleporter will be used, false if not.
+     */
+    boolean checkTeleportSafety();
+
+    /**
+     * Returns the teleporter to use for this destination.
+     *
+     * <p>By default, Multiverse will automatically use SafeTeleporter. If you want to use a different teleporter, you can
+     * override this method.</p>
+     *
+     * @return The custom teleporter to use for this destination. Return null to use the default teleporter.
+     */
+    @Nullable Teleporter getTeleporter();
+}

src/main/java/com/onarandombox/MultiverseCore/api/DestinationInstance.java

@@ -0,0 +1,45 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.Location;
+import org.bukkit.entity.Entity;
+import org.bukkit.util.Vector;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public interface DestinationInstance {
+    /**
+     * Gets the exact location to teleport an entity to.
+     *
+     * @param teleportee The entity to teleport.
+     * @return The location to teleport to.
+     */
+    @Nullable Location getLocation(@NotNull Entity teleportee);
+
+    /**
+     * Gets the velocity to apply to an entity after teleporting.
+     *
+     * @param teleportee The entity to teleport.
+     * @return A vector representing the speed/direction the player should travel when arriving at the destination.
+     */
+    @Nullable Vector getVelocity(@NotNull Entity teleportee);
+
+    /**
+     * Gets the permission suffix to check for when teleporting to this destination.
+     * This is used for finer per world/player permissions, such as "multiverse.teleport.self.worldname".
+     *
+     * <p>For example, if the destination is "w:world", the permission suffix is "world".</p>
+     *
+     * @return The permission suffix.
+     */
+    @Nullable String getFinerPermissionSuffix();
+
+    /**
+     * Serialises the destination instance to a savable string.
+     *
+     * <p>This is used when plugins save destinations to configuration,
+     * and when the destination is displayed to the user.</p>
+     *
+     * @return The serialised destination instance.
+     */
+    @NotNull String serialise();
+}

src/main/java/com/onarandombox/MultiverseCore/api/FancyText.java

@@ -1,20 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.api;
-
-/**
- * A fancy text.
- */
-public interface FancyText {
-    /**
-     * Gets the {@link String}-representation of this {@link FancyText}.
-     *
-     * @return The {@link String}-representation of this {@link FancyText}.
-     */
-    String getFancyText();
-}

src/main/java/com/onarandombox/MultiverseCore/api/LocationManipulation.java

@@ -3,10 +3,12 @@ package com.onarandombox.MultiverseCore.api;
 import org.bukkit.Location;
 import org.bukkit.entity.Vehicle;
 import org.bukkit.util.Vector;
+import org.jvnet.hk2.annotations.Contract;
 
 /**
  * Used to manipulate locations.
  */
+@Contract
 public interface LocationManipulation {
     /**
      * Convert a Location into a Colon separated string to allow us to store it in text.

src/main/java/com/onarandombox/MultiverseCore/api/LoggablePlugin.java

@@ -1,36 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.api;
-
-import com.dumptruckman.minecraft.util.Logging;
-import org.bukkit.Server;
-
-import java.util.logging.Level;
-
-/**
- * A simple API to require plugins to have a log method.
- *
- * @deprecated Replaced by {@link Logging}.
- * */
-@Deprecated
-public interface LoggablePlugin {
-    /**
-     * Logs a message at the specified level.
-     *
-     * @param level The Log-{@link Level}.
-     * @param msg   The message to log.
-     */
-    void log(Level level, String msg);
-
-    /**
-     * Gets the server instance that this plugin is attached to.
-     *
-     * @return A {@link Server} instance.
-     */
-    Server getServer();
-}

src/main/java/com/onarandombox/MultiverseCore/api/MVConfig.java

@@ -1,114 +1,93 @@
 package com.onarandombox.MultiverseCore.api;
 
-import org.bukkit.configuration.serialization.ConfigurationSerializable;
+import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
+import com.onarandombox.MultiverseCore.placeholders.MultiverseCorePlaceholders;
+import io.vavr.control.Try;
+import org.jvnet.hk2.annotations.Contract;
 
-/**
- * The configuration of MultiverseCore.
- */
-public interface MultiverseCoreConfig extends ConfigurationSerializable {
-    /**
-     * Sets a property using a {@link String}.
-     * @param property The name of the property.
-     * @param value The value.
-     * @return True on success, false if the operation failed.
-     */
-    boolean setConfigProperty(String property, String value);
+@Contract
+public interface MVConfig {
 
     /**
-     * Sets portalCooldown.
-     * @param portalCooldown The new value.
+     * Loads the config from disk.
+     * @return True if the config was loaded successfully.
      */
-    void setTeleportCooldown(int portalCooldown);
+    boolean load();
 
     /**
-     * Gets portalCooldown.
-     * @return portalCooldown.
+     * Whether the config has been loaded.
+     * @return True if the config has been loaded.
      */
-    int getTeleportCooldown();
+    boolean isLoaded();
 
     /**
-     * Sets firstSpawnWorld.
-     * @param firstSpawnWorld The new value.
+     * Saves the config to disk.
      */
-    void setFirstSpawnWorld(String firstSpawnWorld);
+    boolean save();
 
     /**
-     * Gets firstSpawnWorld.
-     * @return firstSpawnWorld.
+     * Gets the nodes for the config.
+     *
+     * @return The nodes for the config.
      */
-    String getFirstSpawnWorld();
+    NodeGroup getNodes();
 
     /**
-     * Sets version.
-     * @param version The new value.
+     * Gets a property from the config.
+     *
+     * @param name The name of the property.
+     * @return A {@link Try} with the value of the property, otherwise a {@link Try.Failure} if there is no property by
+     * that name.
      */
-    void setVersion(int version);
+    Try<Object> getProperty(String name);
 
     /**
-     * Gets version.
-     * @return version.
+     * Sets a property in the config.
+     *
+     * @param name  The name of the property.
+     * @param value The value of the property.
+     * @return An empty {@link Try} if the property was set successfully, otherwise a {@link Try.Failure} with the
+     * exception explaining why the property could not be set.
      */
-    double getVersion();
+    Try<Void> setProperty(String name, Object value);
 
     /**
-     * Sets messageCooldown.
-     * @param messageCooldown The new value.
+     * Sets world access permissions should be enforced.
+     * @param enforceAccess The new value.
      */
-    void setMessageCooldown(int messageCooldown);
+    void setEnforceAccess(boolean enforceAccess);
 
     /**
-     * Gets messageCooldown.
-     * @return messageCooldown.
+     * Gets enforceAccess.
+     * @return enforceAccess.
      */
-    int getMessageCooldown();
+    boolean getEnforceAccess();
 
     /**
-     * Sets globalDebug.
-     * @param globalDebug The new value.
+     * Sets whether the game mode should be enforced.
+     * @param enforceGameMode The new value.
      */
-    void setGlobalDebug(int globalDebug);
+    void setEnforceGameMode(boolean enforceGameMode);
 
     /**
-     * Gets globalDebug.
-     * @return globalDebug.
+     * Gets enforceGameMode value.
+     * @return True if game mode should be enforced.
      */
-    int getGlobalDebug();
+    boolean getEnforceGameMode();
 
     /**
-     * Sets displayPermErrors.
-     * @param displayPermErrors The new value.
+     * Sets whether or not the automatic purge of entities is enabled.
+     *
+     * @param autopurge True if automatic purge should be enabled.
      */
-    void setDisplayPermErrors(boolean displayPermErrors);
+    void setAutoPurgeEntities(boolean autopurge);
 
     /**
-     * Gets displayPermErrors.
-     * @return displayPermErrors.
+     * Gets whether or not the automatic purge of entities is enabled.
+     *
+     * @return True if automatic purge is enabled.
      */
-    boolean getDisplayPermErrors();
-
-    /**
-     * Sets enableBuscript.
-     * @param enableBuscript The new value.
-     */
-    void setEnableBuscript(boolean enableBuscript);
-
-    /**
-     * Gets enableBuscript.
-     * @return enableBuscript.
-     */
-    boolean getEnableBuscript();
-
-    /**
-     * Sets firstSpawnOverride.
-     * @param firstSpawnOverride The new value.
-     */
-    void setFirstSpawnOverride(boolean firstSpawnOverride);
-
-    /**
-     * Gets firstSpawnOverride.
-     * @return firstSpawnOverride.
-     */
-    boolean getFirstSpawnOverride();
+    boolean isAutoPurgeEntities();
 
     /**
      * Sets teleportIntercept.
@@ -122,18 +101,70 @@ public interface MultiverseCoreConfig extends ConfigurationSerializable {
      */
     boolean getTeleportIntercept();
 
+    /**
+     * Sets firstSpawnOverride.
+     * @param firstSpawnOverride The new value.
+     */
+    void setFirstSpawnOverride(boolean firstSpawnOverride);
+
+    /**
+     * Gets firstSpawnOverride.
+     * @return firstSpawnOverride.
+     */
+    boolean getFirstSpawnOverride();
+
+    /**
+     * Sets firstSpawnWorld.
+     * @param firstSpawnWorld The new value.
+     */
+    void setFirstSpawnLocation(String firstSpawnWorld);
+
+    /**
+     * Gets firstSpawnWorld.
+     * @return firstSpawnWorld.
+     */
+    String getFirstSpawnLocation();
+
+    /**
+     * Sets whether or not to let Bukkit determine portal search radius on its own or if Multiverse should give input.
+     *
+     * @param useDefaultPortalSearch True to let Bukkit determine portal search radius on its own.
+     */
+    void setUseCustomPortalSearch(boolean useDefaultPortalSearch);
+
+    /**
+     * Gets whether or not Bukkit will be determining portal search radius on its own or if Multiverse should help.
+     *
+     * @return True means Bukkit will use its own default values.
+     */
+    boolean isUsingCustomPortalSearch();
+
+    /**
+     * Sets the radius at which vanilla style portals will be searched for to connect to worlds together.
+     *
+     * @param searchRadius The portal search radius.
+     */
+    void setCustomPortalSearchRadius(int searchRadius);
+
+    /**
+     * Gets the radius at which vanilla style portals will be searched for to connect to worlds together.
+     *
+     * @return The portal search radius.
+     */
+    int getCustomPortalSearchRadius();
+
     /**
      * Sets prefixChat.
      * @param prefixChat The new value.
      */
-    void setPrefixChat(boolean prefixChat);
+    void setEnablePrefixChat(boolean prefixChat);
 
     /**
      * Gets prefixChat.
      * @return prefixChat.
      */
-    boolean getPrefixChat();
-    
+    boolean isEnablePrefixChat();
+
     /**
      * Sets prefixChatFormat.
      * @param prefixChatFormat The new value.
@@ -147,28 +178,28 @@ public interface MultiverseCoreConfig extends ConfigurationSerializable {
     String getPrefixChatFormat();
 
     /**
-     * Sets enforceAccess.
-     * @param enforceAccess The new value.
+     * Sets whether to register the {@link MultiverseCorePlaceholders} class with PlaceholderAPI plugin.
+     * @param registerPapiHook The new value.
      */
-    void setEnforceAccess(boolean enforceAccess);
+    void setRegisterPapiHook(boolean registerPapiHook);
 
     /**
-     * Gets enforceAccess.
-     * @return enforceAccess.
+     * Gets whether to register the {@link MultiverseCorePlaceholders} class with PlaceholderAPI plugin.
+     * @return registerPapiHook.
      */
-    boolean getEnforceAccess();
+    boolean isRegisterPapiHook();
 
     /**
-     * Sets useasyncchat.
-     * @param useAsyncChat The new value.
+     * Sets globalDebug.
+     * @param globalDebug The new value.
      */
-    void setUseAsyncChat(boolean useAsyncChat);
+    void setGlobalDebug(int globalDebug);
 
     /**
-     * Gets useasyncchat.
-     * @return useasyncchat.
+     * Gets globalDebug.
+     * @return globalDebug.
      */
-    boolean getUseAsyncChat();
+    int getGlobalDebug();
 
     /**
      * Sets whether to suppress startup messages.
@@ -185,46 +216,11 @@ public interface MultiverseCoreConfig extends ConfigurationSerializable {
     boolean getSilentStart();
 
     /**
-     * Sets whether or not to let Bukkit determine portal search radius on its own or if Multiverse should give input.
+     * Sets whether or not the donation/patreon messages are shown.
      *
-     * @param useDefaultPortalSearch True to let Bukkit determine portal search radius on its own.
+     * @param idonotwanttodonate True if donation/patreon messages should be shown.
      */
-    void setUseDefaultPortalSearch(boolean useDefaultPortalSearch);
-
-    /**
-     * Gets whether or not Bukkit will be determining portal search radius on its own or if Multiverse should help.
-     *
-     * @return True means Bukkit will use its own default values.
-     */
-    boolean isUsingDefaultPortalSearch();
-
-    /**
-     * Sets the radius at which vanilla style portals will be searched for to connect to worlds together.
-     *
-     * @param searchRadius The portal search radius.
-     */
-    void setPortalSearchRadius(int searchRadius);
-
-    /**
-     * Gets the radius at which vanilla style portals will be searched for to connect to worlds together.
-     *
-     * @return The portal search radius.
-     */
-    int getPortalSearchRadius();
-
-    /**
-     * Gets whether or not the automatic purge of entities is enabled.
-     *
-     * @return True if automatic purge is enabled.
-     */
-    boolean isAutoPurgeEnabled();
-
-    /**
-     * Sets whether or not the automatic purge of entities is enabled.
-     *
-     * @param autopurge True if automatic purge should be enabled.
-     */
-    void setAutoPurgeEnabled(boolean autopurge);
+    void setShowDonateMessage(boolean idonotwanttodonate);
 
     /**
      * Gets whether or not the donation/patreon messages are shown.
@@ -232,11 +228,4 @@ public interface MultiverseCoreConfig extends ConfigurationSerializable {
      * @return True if donation/patreon messages should be shown.
      */
     boolean isShowingDonateMessage();
-
-    /**
-     * Sets whether or not the donation/patreon messages are shown.
-     *
-     * @param idonotwanttodonate True if donation/patreon messages should be shown.
-     */
-    void setShowDonateMessage(boolean idonotwanttodonate);
 }

src/main/java/com/onarandombox/MultiverseCore/api/MVCore.java

@@ -0,0 +1,40 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.api;
+
+/**
+ * Multiverse 2 Core API
+ * <p>
+ * This API contains a bunch of useful things you can get out of Multiverse in general!
+ */
+public interface MVCore extends MVPlugin {
+
+    /**
+     * Saves all configs.
+     *
+     * @return Whether the config was successfully saved
+     */
+    boolean saveAllConfigs();
+
+    /**
+     * Decrements the number of plugins that have specifically hooked into core.
+     */
+    void decrementPluginCount();
+
+    /**
+     * Increments the number of plugins that have specifically hooked into core.
+     */
+    void incrementPluginCount();
+
+    /**
+     * Returns the number of plugins that have specifically hooked into core.
+     *
+     * @return The number if plugins that have hooked into core.
+     */
+    int getPluginCount();
+}

src/main/java/com/onarandombox/MultiverseCore/api/MVDestination.java

@@ -16,6 +16,7 @@ import org.bukkit.util.Vector;
  * A destination API for Multiverse
  * Any plugin can add these to MV and when they are, any action that uses them (portals, MVTP, etc.) can use them!
  */
+@Deprecated
 public interface MVDestination {
     /**
      * Returns the identifier or prefix that is required for this destination.

src/main/java/com/onarandombox/MultiverseCore/api/MVPlugin.java

@@ -7,39 +7,16 @@
 
 package com.onarandombox.MultiverseCore.api;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.event.MVVersionEvent;
-
 /**
  * This interface is implemented by every official Multiverse-plugin.
  */
-public interface MVPlugin extends LoggablePlugin {
-    /**
-     * Adds This plugin's version information to the buffer and returns the new string.
-     *
-     * @param buffer The string that contains Core and all other MV plugins' versions.
-     *
-     * @return A modified buffer that contains this MVPlugin's version information.
-     *
-     * @deprecated This is now deprecated, nobody needs it any longer.
-     * All version info-dumping is now done with {@link MVVersionEvent}.
-     */
-    @Deprecated
-    String dumpVersionInfo(String buffer);
-
+public interface MVPlugin {
     /**
      * Gets the reference to MultiverseCore.
      *
      * @return A valid {@link com.onarandombox.MultiverseCore}.
      */
-    MultiverseCore getCore();
-
-    /**
-     * Sets the reference to MultiverseCore.
-     *
-     * @param core A valid {@link com.onarandombox.MultiverseCore}.
-     */
-    void setCore(MultiverseCore core);
+    MVCore getCore();
 
     /**
      * Allows Multiverse or a plugin to query another Multiverse plugin to see what version its protocol is. This
@@ -49,4 +26,11 @@ public interface MVPlugin extends LoggablePlugin {
      * @return The Integer protocol version.
      */
     int getProtocolVersion();
+
+    /**
+     * Parse the Authors Array into a readable String with ',' and 'and'.
+     *
+     * @return The readable authors-{@link String}
+     */
+    String getAuthors();
 }

src/main/java/com/onarandombox/MultiverseCore/api/MVWorld.java

@@ -7,8 +7,12 @@
 
 package com.onarandombox.MultiverseCore.api;
 
-import com.onarandombox.MultiverseCore.enums.AllowedPortalType;
+import java.util.List;
+
 import com.onarandombox.MultiverseCore.exceptions.PropertyDoesNotExistException;
+import com.onarandombox.MultiverseCore.world.configuration.AddProperties;
+import com.onarandombox.MultiverseCore.world.configuration.AllowedPortalType;
+import com.onarandombox.MultiverseCore.world.configuration.EnglishChatColor;
 import org.bukkit.ChatColor;
 import org.bukkit.Difficulty;
 import org.bukkit.GameMode;
@@ -16,16 +20,13 @@ import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.WorldType;
-import org.bukkit.command.CommandSender;
 import org.bukkit.permissions.Permission;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.List;
-
 /**
  * The API for a Multiverse Handled World.
  */
-public interface MultiverseWorld {
+public interface MVWorld {
     /**
      * Returns the Bukkit world object that this world describes.
      *
@@ -156,9 +157,9 @@ public interface MultiverseWorld {
     boolean setPropertyValue(String property, String value) throws PropertyDoesNotExistException;
 
     /**
-     * Adds a value to the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     * Adds a value to the given property. The property must be a {@link AddProperties}.
      *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to add a value to.
+     * @param property The name of a {@link AddProperties} to add a value to.
      * @param value    A value in string representation, it will be parsed to the correct type.
      * @return True if the value was added, false if not.
      * @deprecated We changed the entire world-config-system. This is not compatible any more.
@@ -167,9 +168,9 @@ public interface MultiverseWorld {
     boolean addToVariable(String property, String value);
 
     /**
-     * Removes a value from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     * Removes a value from the given property. The property must be a {@link AddProperties}.
      *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to remove a value
+     * @param property The name of a {@link AddProperties} to remove a value
      *                 from.
      * @param value    A value in string representation, it will be parsed to the correct type.
      * @return True if the value was removed, false if not.
@@ -179,9 +180,9 @@ public interface MultiverseWorld {
     boolean removeFromVariable(String property, String value);
 
     /**
-     * Removes all values from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     * Removes all values from the given property. The property must be a {@link AddProperties}.
      *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to clear.
+     * @param property The name of a {@link AddProperties} to clear.
      * @return True if it was cleared, false if not.
      * @deprecated We changed the entire world-config-system. This is not compatible any more.
      */
@@ -279,7 +280,7 @@ public interface MultiverseWorld {
      * @param color A string that may translate to a color.
      * @return True if it is a color, false if not.
      *
-     * @deprecated This has been moved: {@link com.onarandombox.MultiverseCore.enums.EnglishChatColor#isValidAliasColor(String)}
+     * @deprecated This has been moved: {@link EnglishChatColor#isValidAliasColor(String)}
      */
     @Deprecated
     boolean isValidAliasColor(String color);

src/main/java/com/onarandombox/MultiverseCore/api/MVWorldManager.java

@@ -7,17 +7,15 @@
 
 package com.onarandombox.MultiverseCore.api;
 
-import com.onarandombox.MultiverseCore.utils.PurgeWorlds;
-import com.onarandombox.MultiverseCore.utils.SimpleWorldPurger;
+import java.util.Collection;
+import java.util.List;
+
 import org.bukkit.World;
 import org.bukkit.World.Environment;
 import org.bukkit.WorldType;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.generator.ChunkGenerator;
-
-import java.io.File;
-import java.util.Collection;
-import java.util.List;
+import org.jvnet.hk2.annotations.Contract;
 
 /**
  * Multiverse 2 World Manager API
@@ -25,6 +23,7 @@ import java.util.List;
  * This API contains all of the world managing
  * functions that your heart desires!
  */
+@Contract
 public interface MVWorldManager {
     /**
      * Add a new World to the Multiverse Setup.
@@ -59,18 +58,6 @@ public interface MVWorldManager {
     boolean addWorld(String name, Environment env, String seedString, WorldType type, Boolean generateStructures,
                      String generator, boolean useSpawnAdjust);
 
-    /**
-     * Make a copy of a world.
-     *
-     * @param oldName            Name of world to be copied
-     * @param newName            Name of world to be created
-     * @param generator          The Custom generator plugin to use. Ignored.
-     * @return True if the world is copied successfully, false if not.
-     * @deprecated Use {@link #cloneWorld(String, String)} instead.
-     */
-    @Deprecated
-    boolean cloneWorld(String oldName, String newName, String generator);
-
     /**
      * Make a copy of a world.
      *
@@ -160,40 +147,40 @@ public interface MVWorldManager {
     /**
      * Returns a list of all the worlds Multiverse knows about.
      *
-     * @return A list of {@link MultiverseWorld}.
+     * @return A list of {@link MVWorld}.
      */
-    Collection<MultiverseWorld> getMVWorlds();
+    Collection<MVWorld> getMVWorlds();
 
 
     /**
-     * Returns a {@link MultiverseWorld} if it exists, and null if it does not.
+     * Returns a {@link MVWorld} if it exists, and null if it does not.
      * This will search name AND alias.
      *
      * @param name The name or alias of the world to get.
-     * @return A {@link MultiverseWorld} or null.
+     * @return A {@link MVWorld} or null.
      */
-    MultiverseWorld getMVWorld(String name);
+    MVWorld getMVWorld(String name);
 
     /**
-     * Returns a {@link MultiverseWorld} if the world with name given exists, and null if it does not.
+     * Returns a {@link MVWorld} if the world with name given exists, and null if it does not.
      * This will search optionally for alias names.
      *
      * @param name          The name or optionally the alias of the world to get.
      * @param checkAliases  Indicates whether to check for world alias name.
-     * @return A {@link MultiverseWorld} or null.
+     * @return A {@link MVWorld} or null.
      */
-    MultiverseWorld getMVWorld(String name, boolean checkAliases);
+    MVWorld getMVWorld(String name, boolean checkAliases);
 
     /**
-     * Returns a {@link MultiverseWorld} if it exists, and null if it does not.
+     * Returns a {@link MVWorld} if it exists, and null if it does not.
      *
      * @param world The Bukkit world to check.
-     * @return A {@link MultiverseWorld} or null.
+     * @return A {@link MVWorld} or null.
      */
-    MultiverseWorld getMVWorld(World world);
+    MVWorld getMVWorld(World world);
 
     /**
-     * Checks to see if the given name is a valid {@link MultiverseWorld}
+     * Checks to see if the given name is a valid {@link MVWorld}
      * Searches based on world name AND alias.
      *
      * @param name The name or alias of the world to check.
@@ -202,7 +189,7 @@ public interface MVWorldManager {
     boolean isMVWorld(String name);
 
     /**
-     * Checks to see if the given name is a valid {@link MultiverseWorld}.
+     * Checks to see if the given name is a valid {@link MVWorld}.
      * Optionally searches by alias is specified.
      *
      * @param name          The name or alias of the world to check.
@@ -212,7 +199,7 @@ public interface MVWorldManager {
     boolean isMVWorld(String name, boolean checkAliases);
 
     /**
-     * Checks to see if the given world is a valid {@link MultiverseWorld}.
+     * Checks to see if the given world is a valid {@link MVWorld}.
      *
      * @param world The Bukkit world to check.
      * @return True if the world has been loaded into MV2, false if not.
@@ -234,32 +221,13 @@ public interface MVWorldManager {
      */
     void loadDefaultWorlds();
 
-    /**
-     * Return the World Purger.
-     *
-     * @return A valid {@link PurgeWorlds}.
-     * @deprecated {@link PurgeWorlds} is deprecated!
-     */
-    @Deprecated
-    PurgeWorlds getWorldPurger();
-
-    /**
-     * Gets the {@link WorldPurger}.
-     * <p>
-     * TODO: Remove {@link #getWorldPurger()} and replace it with this method.
-     * @return The {@link WorldPurger} this {@link MVWorldManager} is using.
-     * @see WorldPurger
-     * @see SimpleWorldPurger
-     */
-    WorldPurger getTheWorldPurger();
-
     /**
      * Gets the world players will spawn in on first join.
      * Currently this always returns worlds.get(0) from Bukkit.
      *
      * @return A Multiverse world that players will spawn in or null if no MV world has been set.
      */
-    MultiverseWorld getSpawnWorld();
+    MVWorld getSpawnWorld();
 
     /**
      * Gets the list of worlds in the config, but unloaded.
@@ -276,10 +244,9 @@ public interface MVWorldManager {
     /**
      * Load the config from a file.
      *
-     * @param file The file to load.
      * @return A loaded configuration.
      */
-    FileConfiguration loadWorldConfig(File file);
+    FileConfiguration loadWorldsConfig();
 
     /**
      * Saves the world config to disk.
@@ -306,9 +273,9 @@ public interface MVWorldManager {
     /**
      * Gets the world players should spawn in first.
      *
-     * @return The {@link MultiverseWorld} new players should spawn in.
+     * @return The {@link MVWorld} new players should spawn in.
      */
-    MultiverseWorld getFirstSpawnWorld();
+    MVWorld getFirstSpawnWorld();
 
     /**
      * Regenerates a world.

src/main/java/com/onarandombox/MultiverseCore/api/MultiverseMessaging.java

@@ -1,56 +0,0 @@
-package com.onarandombox.MultiverseCore.api;
-
-import java.util.Collection;
-
-import org.bukkit.command.CommandSender;
-
-/**
- * Multiverse-messaging.
- */
-public interface MultiverseMessaging {
-    /**
-     * Sets the message-cooldown.
-     * @param milliseconds The new message-cooldown in milliseconds.
-     */
-    void setCooldown(int milliseconds);
-
-    /**
-     * Sends a message to the specified sender if the cooldown has passed.
-     *
-     * @param sender         The person/console to send the message to.
-     * @param message        The message to send.
-     * @param ignoreCooldown If true this message will always be sent. Useful for things like menus
-     * @return true if the message was sent, false if not.
-     */
-    boolean sendMessage(CommandSender sender, String message, boolean ignoreCooldown);
-
-    /**
-     * Sends a group of messages to the specified sender if the cooldown has passed.
-     * This method is needed, since sending many messages in quick succession would violate
-     * the cooldown.
-     *
-     * @param sender         The person/console to send the message to.
-     * @param messages       The messages to send.
-     * @param ignoreCooldown If true these messages will always be sent. Useful for things like menus
-     * @return true if the message was sent, false if not.
-     */
-    boolean sendMessages(CommandSender sender, String[] messages, boolean ignoreCooldown);
-
-    /**
-     * Sends a group of messages to the specified sender if the cooldown has passed.
-     * This method is needed, since sending many messages in quick succession would violate
-     * the cooldown.
-     *
-     * @param sender         The person/console to send the message to.
-     * @param messages       The messages to send.
-     * @param ignoreCooldown If true these messages will always be sent. Useful for things like menus
-     * @return true if the message was sent, false if not.
-     */
-    boolean sendMessages(CommandSender sender, Collection<String> messages, boolean ignoreCooldown);
-
-    /**
-     * Gets the message-cooldown.
-     * @return The message-cooldown.
-     */
-    int getCooldown();
-}

src/main/java/com/onarandombox/MultiverseCore/api/MultiversePlugin.java

@@ -1,161 +0,0 @@
-package com.onarandombox.MultiverseCore.api;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.logging.Level;
-
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.plugin.java.JavaPlugin;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.utils.DebugLog;
-import com.pneumaticraft.commandhandler.CommandHandler;
-
-/**
- * Make things easier for MV-Plugins!
- */
-public abstract class MultiversePlugin extends JavaPlugin implements MVPlugin {
-    private MultiverseCore core;
-    /**
-     * Prefix for standard log entrys.
-     */
-    protected String logTag;
-    private DebugLog debugLog;
-
-    /**
-     * {@inheritDoc}
-     *
-     * Note: You can't override this, use {@link #onPluginEnable()} instead!
-     * @see #onPluginEnable()
-     */
-    @Override
-    public final void onEnable() {
-        MultiverseCore theCore = (MultiverseCore) this.getServer().getPluginManager().getPlugin("Multiverse-Core");
-        if (theCore == null) {
-            this.getLogger().severe("Core not found! The plugin dev needs to add a dependency!");
-            this.getLogger().severe("Disabling!");
-            this.getServer().getPluginManager().disablePlugin(this);
-            return;
-        }
-        if (theCore.getProtocolVersion() < this.getProtocolVersion()) {
-            this.getLogger().severe("You need a newer version of Multiverse-Core!");
-            this.getLogger().severe("Disabling!");
-            this.getServer().getPluginManager().disablePlugin(this);
-            return;
-        }
-        this.setCore(theCore);
-
-        this.getServer().getLogger().info(String.format("%s - Version %s enabled - By %s",
-                this.getDescription().getName(), this.getDescription().getVersion(), getAuthors()));
-        getDataFolder().mkdirs();
-        File debugLogFile = new File(getDataFolder(), "debug.log");
-        try {
-            debugLogFile.createNewFile();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        debugLog = new DebugLog(this.getDescription().getName(), getDataFolder() + File.separator + "debug.log");
-        debugLog.setTag(String.format("[%s-Debug]", this.getDescription().getName()));
-
-        this.onPluginEnable();
-    }
-
-    /**
-     * Parse the Authors Array into a readable String with ',' and 'and'.
-     *
-     * @return The readable authors-{@link String}
-     */
-    protected String getAuthors() {
-        String authors = "";
-        List<String> auths = this.getDescription().getAuthors();
-        if (auths.size() == 0) {
-            return "";
-        }
-
-        if (auths.size() == 1) {
-            return auths.get(0);
-        }
-
-        for (int i = 0; i < auths.size(); i++) {
-            if (i == this.getDescription().getAuthors().size() - 1) {
-                authors += " and " + this.getDescription().getAuthors().get(i);
-            } else {
-                authors += ", " + this.getDescription().getAuthors().get(i);
-            }
-        }
-        return authors.substring(2);
-    }
-
-    /**
-     * Called when the plugin is enabled.
-     * @see #onEnable()
-     */
-    protected abstract void onPluginEnable();
-
-    /**
-     * You can register commands here.
-     * @param handler The CommandHandler.
-     */
-    protected abstract void registerCommands(CommandHandler handler);
-
-    @Override
-    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!this.isEnabled()) {
-            sender.sendMessage("This plugin is Disabled!");
-            return true;
-        }
-
-        ArrayList<String> allArgs = new ArrayList<String>(args.length + 1);
-        allArgs.add(command.getName());
-        allArgs.addAll(Arrays.asList(args));
-        return this.getCore().getCommandHandler().locateAndRunCommand(sender, allArgs);
-    }
-
-    @Override
-    public void log(Level level, String msg) {
-        int debugLevel = this.getCore().getMVConfig().getGlobalDebug();
-        if ((level == Level.FINE && debugLevel >= 1) || (level == Level.FINER && debugLevel >= 2)
-                || (level == Level.FINEST && debugLevel >= 3)) {
-            debugLog.log(level, msg);
-        } else if (level != Level.FINE && level != Level.FINER && level != Level.FINEST) {
-            String message = new StringBuilder(getLogTag()).append(msg).toString();
-            this.getServer().getLogger().log(level, message);
-            debugLog.log(level, message);
-        }
-    }
-
-    private String getLogTag() {
-        if (logTag == null)
-            logTag = String.format("[%s]", this.getDescription().getName());
-        return logTag;
-    }
-
-    /**
-     * Sets the debug log-tag.
-     * @param tag The new tag.
-     */
-    protected final void setDebugLogTag(String tag) {
-        this.debugLog.setTag(tag);
-    }
-
-    @Override
-    public final String dumpVersionInfo(String buffer) {
-        throw new UnsupportedOperationException("This is gone.");
-    }
-
-    @Override
-    public final MultiverseCore getCore() {
-        if (this.core == null)
-            throw new IllegalStateException("Core is null!");
-        return this.core;
-    }
-
-    @Override
-    public final void setCore(MultiverseCore core) {
-        this.core = core;
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/api/SafeTTeleporter.java

@@ -1,14 +1,19 @@
 package com.onarandombox.MultiverseCore.api;
 
+import java.util.concurrent.CompletableFuture;
+
+import co.aikar.commands.BukkitCommandIssuer;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import com.onarandombox.MultiverseCore.teleportation.TeleportResult;
 import org.bukkit.Location;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Entity;
-
-import com.onarandombox.MultiverseCore.enums.TeleportResult;
+import org.jvnet.hk2.annotations.Contract;
 
 /**
  * Used to safely teleport people.
  */
+@Contract
 public interface SafeTTeleporter extends Teleporter {
 
     /**
@@ -31,12 +36,24 @@ public interface SafeTTeleporter extends Teleporter {
      * Safely teleport the entity to the MVDestination. This will perform checks to see if the place is safe, and if
      * it's not, will adjust the final destination accordingly.
      *
-     * @param teleporter Person who performed the teleport command.
-     * @param teleportee Entity to teleport
-     * @param d          Destination to teleport them to
+     * @param teleporter    Person who performed the teleport command.
+     * @param teleportee    Entity to teleport
+     * @param destination   Destination to teleport them to
      * @return true for success, false for failure
      */
-    TeleportResult safelyTeleport(CommandSender teleporter, Entity teleportee, MVDestination d);
+    @Deprecated
+    TeleportResult safelyTeleport(BukkitCommandIssuer teleporter, Entity teleportee, ParsedDestination<?> destination);
+
+    /**
+     * Safely teleport the entity to the MVDestination. This will perform checks to see if the place is safe, and if
+     * it's not, will adjust the final destination accordingly.
+     *
+     * @param teleporter    Person who performed the teleport command.
+     * @param teleportee    Entity to teleport
+     * @param destination   Destination to teleport them to
+     * @return true for success, false for failure
+     */
+    CompletableFuture<TeleportResult> safelyTeleportAsync(BukkitCommandIssuer teleporter, Entity teleportee, ParsedDestination<?> destination);
 
     /**
      * Safely teleport the entity to the Location. This may perform checks to
@@ -55,11 +72,11 @@ public interface SafeTTeleporter extends Teleporter {
     /**
      * Returns a safe location for the entity to spawn at.
      *
-     * @param e The entity to spawn
-     * @param d The MVDestination to take the entity to.
+     * @param entity        The entity to spawn
+     * @param destination   The MVDestination to take the entity to.
      * @return A new location to spawn the entity at.
      */
-    Location getSafeLocation(Entity e, MVDestination d);
+    Location getSafeLocation(Entity entity, DestinationInstance destination);
 
     /**
      * Finds a portal-block next to the specified {@link Location}.
@@ -67,5 +84,4 @@ public interface SafeTTeleporter extends Teleporter {
      * @return The next portal-block's {@link Location}.
      */
     Location findPortalBlockNextTo(Location l);
-
 }

src/main/java/com/onarandombox/MultiverseCore/api/Teleporter.java

@@ -1,10 +1,33 @@
 package com.onarandombox.MultiverseCore.api;
 
-import com.onarandombox.MultiverseCore.api.MVDestination;
-import com.onarandombox.MultiverseCore.enums.TeleportResult;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
+import java.util.concurrent.CompletableFuture;
 
+import co.aikar.commands.BukkitCommandIssuer;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import com.onarandombox.MultiverseCore.teleportation.TeleportResult;
+import org.bukkit.entity.Entity;
+import org.jvnet.hk2.annotations.Contract;
+
+@Contract
 public interface Teleporter {
-    TeleportResult teleport(CommandSender teleporter, Player teleportee, MVDestination destination);
+    /**
+     * Teleport the entity to the Multiverse Destination.
+     *
+     * @param teleporter    Person who performed the teleport command.
+     * @param teleportee    Entity to teleport
+     * @param destination   Destination to teleport them to
+     * @return true for success, false for failure
+     */
+    @Deprecated
+    TeleportResult teleport(BukkitCommandIssuer teleporter, Entity teleportee, ParsedDestination<?> destination);
+
+    /**
+     * Teleport the entity to the Multiverse Destination.
+     *
+     * @param teleporter    Person who performed the teleport command.
+     * @param teleportee    Entity to teleport
+     * @param destination   Destination to teleport them to
+     * @return true for success, false for failure
+     */
+    CompletableFuture<TeleportResult> teleportAsync(BukkitCommandIssuer teleporter, Entity teleportee, ParsedDestination<?> destination);
 }

src/main/java/com/onarandombox/MultiverseCore/api/WorldPurger.java

@@ -4,47 +4,49 @@ import java.util.List;
 
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Entity;
+import org.jvnet.hk2.annotations.Contract;
 
 /**
  * Used to remove animals from worlds that don't belong there.
  */
+@Contract
 public interface WorldPurger {
     /**
      * Synchronizes the given worlds with their settings.
      *
-     * @param worlds A list of {@link MultiverseWorld}
+     * @param worlds A list of {@link MVWorld}
      */
-    void purgeWorlds(List<MultiverseWorld> worlds);
+    void purgeWorlds(List<MVWorld> worlds);
 
     /**
-     * Convenience method for {@link #purgeWorld(MultiverseWorld, java.util.List, boolean, boolean)} that takes the settings from the world-config.
+     * Convenience method for {@link #purgeWorld(MVWorld, java.util.List, boolean, boolean)} that takes the settings from the world-config.
      *
-     * @param world The {@link MultiverseWorld}.
+     * @param world The {@link MVWorld}.
      */
-    void purgeWorld(MultiverseWorld world);
+    void purgeWorld(MVWorld world);
 
     /**
      * Clear all animals/monsters that do not belong to a world according to the config.
      *
-     * @param mvworld The {@link MultiverseWorld}.
+     * @param mvworld The {@link MVWorld}.
      * @param thingsToKill A {@link List} of animals/monsters to be killed.
      * @param negateAnimals Whether the monsters in the list should be negated.
      * @param negateMonsters Whether the animals in the list should be negated.
      */
-    void purgeWorld(MultiverseWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
-            boolean negateMonsters);
+    void purgeWorld(MVWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
+                    boolean negateMonsters);
 
     /**
      * Clear all animals/monsters that do not belong to a world according to the config.
      *
-     * @param mvworld The {@link MultiverseWorld}.
+     * @param mvworld The {@link MVWorld}.
      * @param thingsToKill A {@link List} of animals/monsters to be killed.
      * @param negateAnimals Whether the monsters in the list should be negated.
      * @param negateMonsters Whether the animals in the list should be negated.
      * @param sender The {@link CommandSender} that initiated the action. He will/should be notified.
      */
-    void purgeWorld(MultiverseWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
-            boolean negateMonsters, CommandSender sender);
+    void purgeWorld(MVWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
+                    boolean negateMonsters, CommandSender sender);
 
     /**
      * Determines whether the specified creature should be killed.
@@ -64,5 +66,5 @@ public interface WorldPurger {
      * @param e The creature.
      * @return {@code true} if the creature should be killed, otherwise {@code false}.
      */
-    boolean shouldWeKillThisCreature(MultiverseWorld w, Entity e);
+    boolean shouldWeKillThisCreature(MVWorld w, Entity e);
 }

src/main/java/com/onarandombox/MultiverseCore/commands/AnchorCommand.java

@@ -1,162 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Allows management of Anchor Destinations.
- */
-public class AnchorCommand extends PaginatedCoreCommand<String> {
-
-    public AnchorCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Create, Delete and Manage Anchor Destinations.");
-        this.setCommandUsage("/mv anchor " + ChatColor.GREEN + "{name}" + ChatColor.GOLD + " [-d]");
-        this.setArgRange(0, 2);
-        this.addKey("mv anchor");
-        this.addKey("mv anchors");
-        this.addKey("mvanchor");
-        this.addKey("mvanchors");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "awesomething");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "otherthing");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "awesomething " + ChatColor.RED + "-d");
-        this.addCommandExample("/mv anchors ");
-        this.setPermission("multiverse.core.anchor.list", "Allows a player to list all anchors.", PermissionDefault.OP);
-        this.addAdditonalPermission(new Permission("multiverse.core.anchor.create",
-                "Allows a player to create anchors.", PermissionDefault.OP));
-        this.addAdditonalPermission(new Permission("multiverse.core.anchor.delete",
-                "Allows a player to delete anchors.", PermissionDefault.OP));
-        this.setItemsPerPage(8); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-    }
-
-    private List<String> getFancyAnchorList(Player p) {
-        List<String> anchorList = new ArrayList<String>();
-        ChatColor color = ChatColor.GREEN;
-        for (String anchor : this.plugin.getAnchorManager().getAnchors(p)) {
-            anchorList.add(color + anchor);
-            color = (color == ChatColor.GREEN) ? ChatColor.GOLD : ChatColor.GREEN;
-        }
-        return anchorList;
-    }
-
-    private void showList(CommandSender sender, List<String> args) {
-        if (!this.plugin.getMVPerms().hasPermission(sender, "multiverse.core.anchor.list", true)) {
-            sender.sendMessage(ChatColor.RED + "You don't have the permission to list anchors!");
-            return;
-        }
-
-        sender.sendMessage(ChatColor.LIGHT_PURPLE + "====[ Multiverse Anchor List ]====");
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-
-        FilterObject filterObject = this.getPageAndFilter(args);
-
-        List<String> availableAnchors = new ArrayList<String>(this.getFancyAnchorList(p));
-        if (filterObject.getFilter().length() > 0) {
-            availableAnchors = this.getFilteredItems(availableAnchors, filterObject.getFilter());
-            if (availableAnchors.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE
-                        + "No anchors matched your filter: " + ChatColor.AQUA + filterObject.getFilter());
-                return;
-            }
-        } else {
-            if (availableAnchors.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE + "No anchors were defined.");
-                return;
-            }
-        }
-
-
-        if (!(sender instanceof Player)) {
-            for (String c : availableAnchors) {
-                sender.sendMessage(c);
-            }
-            return;
-        }
-
-        int totalPages = (int) Math.ceil(availableAnchors.size() / (this.itemsPerPage + 0.0));
-
-        if (filterObject.getPage() > totalPages) {
-            filterObject.setPage(totalPages);
-        } else if (filterObject.getPage() < 1) {
-            filterObject.setPage(1);
-        }
-
-        sender.sendMessage(ChatColor.AQUA + " Page " + filterObject.getPage() + " of " + totalPages);
-
-        this.showPage(filterObject.getPage(), sender, availableAnchors);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() == 0) {
-            this.showList(sender, args);
-            return;
-        }
-        if (args.size() == 1 && (this.getPageAndFilter(args).getPage() != 1 || args.get(0).equals("1"))) {
-            this.showList(sender, args);
-            return;
-        }
-        if (args.size() == 2 && args.get(1).equalsIgnoreCase("-d")) {
-            if (!this.plugin.getMVPerms().hasPermission(sender, "multiverse.core.anchor.delete", true)) {
-                sender.sendMessage(ChatColor.RED + "You don't have the permission to delete anchors!");
-            } else {
-                if (this.plugin.getAnchorManager().deleteAnchor(args.get(0))) {
-                    sender.sendMessage("Anchor '" + args.get(0) + "' was successfully " + ChatColor.RED + "deleted!");
-                } else {
-                    sender.sendMessage("Anchor '" + args.get(0) + "' was " + ChatColor.RED + " NOT " + ChatColor.WHITE + "deleted!");
-                }
-            }
-            return;
-        }
-
-        if (!(sender instanceof Player)) {
-            sender.sendMessage("You must be a player to create Anchors.");
-            return;
-        }
-
-        if (!this.plugin.getMVPerms().hasPermission(sender, "multiverse.core.anchor.create", true)) {
-            sender.sendMessage(ChatColor.RED + "You don't have the permission to create anchors!");
-        } else {
-            Player player = (Player) sender;
-            if (this.plugin.getAnchorManager().saveAnchorLocation(args.get(0), player.getLocation())) {
-                sender.sendMessage("Anchor '" + args.get(0) + "' was successfully " + ChatColor.GREEN + "created!");
-            } else {
-                sender.sendMessage("Anchor '" + args.get(0) + "' was " + ChatColor.RED + " NOT " + ChatColor.WHITE + "created!");
-            }
-        }
-    }
-
-    @Override
-    protected List<String> getFilteredItems(List<String> availableItems, String filter) {
-        List<String> filtered = new ArrayList<String>();
-        for (String s : availableItems) {
-            if (s.matches("(?i).*" + filter + ".*")) {
-                filtered.add(s);
-            }
-        }
-        return filtered;
-    }
-
-    @Override
-    protected String getItemText(String item) {
-        return item;
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/CheckCommand.java

@@ -1,58 +1,53 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVDestination;
-import com.onarandombox.MultiverseCore.destination.InvalidDestination;
-import com.onarandombox.MultiverseCore.utils.MVPermissions;
-import com.onarandombox.MultiverseCore.utils.PlayerFinder;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.destination.DestinationsProvider;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-/**
- * Checks to see if a player can go to a destination.
- */
+@Service
+@CommandAlias("mv")
 public class CheckCommand extends MultiverseCommand {
 
-    public CheckCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Help you validate your multiverse settings");
-        this.setCommandUsage("/mv check " + ChatColor.GREEN + "{PLAYER} {DESTINATION}");
-        this.setArgRange(2, 2);
-        this.addKey("mv check");
-        this.addKey("mvcheck");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "fernferret " + ChatColor.LIGHT_PURPLE + "w:MyWorld");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "Rigby90 " + ChatColor.LIGHT_PURPLE + "p:MyPortal");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "lithium3141 " + ChatColor.LIGHT_PURPLE + "ow:WarpName");
-        this.setPermission("multiverse.core.debug", "Checks to see if a player can go to a destination. Prints debug if false.", PermissionDefault.OP);
+    private final DestinationsProvider destinationsProvider;
+
+    @Inject
+    public CheckCommand(@NotNull MVCommandManager commandManager, @NotNull DestinationsProvider destinationsProvider) {
+        super(commandManager);
+        this.destinationsProvider = destinationsProvider;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = PlayerFinder.get(args.get(0), sender);
-        if (p == null) {
-            sender.sendMessage("Could not find player " + ChatColor.GREEN + args.get(0));
-            sender.sendMessage("Are they online?");
-            return;
-        }
-        MVDestination dest = this.plugin.getDestFactory().getDestination(args.get(1));
-        if (dest instanceof InvalidDestination) {
-            sender.sendMessage(String.format("You asked if '%s' could go to %s%s%s,",
-                    args.get(0), ChatColor.GREEN, args.get(0), ChatColor.WHITE));
-            sender.sendMessage("but I couldn't find a Destination of that name? Did you type it correctly?");
-            return;
-        }
+    @Subcommand("check")
+    @CommandPermission("multiverse.core.check")
+    @CommandCompletion("@players @destinations|@mvworlds")
+    @Syntax("<player> <destination>")
+    @Description("{@@mv-core.check.description}")
+    public void onCheckCommand(BukkitCommandIssuer issuer,
 
-        MVPermissions perms = this.plugin.getMVPerms();
-        perms.tellMeWhyICantDoThis(sender, p, dest);
+                               @Syntax("<player>")
+                               @Description("{@@mv-core.check.player.description}")
+                               Player player,
+
+                               @Syntax("<destination>")
+                               @Description("{@@mv-core.check.destination.description}")
+                               ParsedDestination<?> destination
+    ) {
+        issuer.sendInfo(MVCorei18n.CHECK_CHECKING,
+                "{player}", player.getName(),
+                "{destination}", destination.toString());
+        //TODO More detailed output on permissions required.
+        this.destinationsProvider.checkTeleportPermissions(issuer, player, destination);
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/CloneCommand.java

@@ -1,55 +1,61 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import java.util.List;
-
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-/**
- * Creates a clone of a world.
- */
+@Service
+@CommandAlias("mv")
 public class CloneCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
 
-    public CloneCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Clone World");
-        this.setCommandUsage("/mv clone" + ChatColor.GREEN + " {TARGET} {NAME}" + ChatColor.GOLD + " -g [GENERATOR[:ID]]");
-        this.setArgRange(2, 4); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-        this.addKey("mvclone");
-        this.addKey("mvcl");
-        this.addKey("mv cl");
-        this.addKey("mv clone");
-        this.addCommandExample("/mv clone " + ChatColor.GOLD + "world" + ChatColor.GREEN + " world_backup");
-        this.addCommandExample("/mv clone " + ChatColor.GOLD + "skyblock_pristine" + ChatColor.GREEN + " skyblock");
-        this.setPermission("multiverse.core.clone", "Clones a world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public CloneCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String oldName = args.get(0);
-	    if (!this.worldManager.hasUnloadedWorld(oldName, true)) {
-            // If no world was found, we can't clone.
-            sender.sendMessage("Sorry, Multiverse doesn't know about world " + oldName + ", so we can't clone it!");
-            sender.sendMessage("Check the " + ChatColor.GREEN + "/mv list" + ChatColor.WHITE + " command to verify it is listed.");
+    @Subcommand("clone")
+    @CommandPermission("multiverse.core.clone")
+    @CommandCompletion("@mvworlds:scope=both @empty")
+    @Syntax("<world> <new world name>")
+    @Description("{@@mv-core.clone.description}")
+    public void onCloneCommand(CommandIssuer issuer,
+
+                               @Conditions("validWorldName:scope=both")
+                               @Syntax("<world>")
+                               @Description("{@@mv-core.clone.world.description}")
+                               String worldName,
+
+                               @Single
+                               @Conditions("validWorldName:scope=new")
+                               @Syntax("<new world name>")
+                               @Description("{@@mv-core.clone.newWorld.description}")
+                               String newWorldName
+    ) {
+        issuer.sendInfo(MVCorei18n.CLONE_CLONING,
+                "{world}", worldName,
+                "{newWorld}", newWorldName);
+
+        if (!this.worldManager.cloneWorld(worldName, newWorldName)) {
+            issuer.sendError(MVCorei18n.CLONE_FAILED);
             return;
         }
-        if (this.plugin.getMVWorldManager().cloneWorld(oldName, args.get(1))) {
-            sender.sendMessage(ChatColor.GREEN + "World cloned!");
-        } else {
-            sender.sendMessage(ChatColor.RED + "World could NOT be cloned!");
-        }
+        issuer.sendInfo(MVCorei18n.CLONE_SUCCESS,
+                "{world}", newWorldName);
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/ConfigCommand.java

@@ -1,72 +1,73 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandIssuer;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.commandtools.context.MVConfigValue;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.exceptions.MultiverseException;
+import io.vavr.control.Option;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-import java.util.Map;
-
-/**
- * Allows you to set Global MV Variables.
- */
+@Service
+@CommandAlias("mv")
 public class ConfigCommand extends MultiverseCommand {
-    public ConfigCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Configuration");
-        this.setCommandUsage("/mv config " + ChatColor.GREEN + "{PROPERTY} {VALUE}");
-        this.setArgRange(1, 2);
-        this.addKey("mv config");
-        this.addKey("mvconfig");
-        this.addKey("mv conf");
-        this.addKey("mvconf");
-        this.addCommandExample("/mv config show");
-        this.addCommandExample("/mv config " + ChatColor.GREEN + "debug" + ChatColor.AQUA + " 3");
-        this.addCommandExample("/mv config " + ChatColor.GREEN + "enforceaccess" + ChatColor.AQUA + " false");
-        this.setPermission("multiverse.core.config", "Allows you to set Global MV Variables.", PermissionDefault.OP);
+
+    private final MVCoreConfig config;
+
+    @Inject
+    public ConfigCommand(@NotNull MVCommandManager commandManager, @NotNull MVCoreConfig config) {
+        super(commandManager);
+        this.config = config;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() <= 1) {
-            StringBuilder builder = new StringBuilder();
-            Map<String, Object> serializedConfig = this.plugin.getMVConfig().serialize();
-            for (Map.Entry<String, Object> entry : serializedConfig.entrySet()) {
-                builder.append(ChatColor.GREEN);
-                builder.append(entry.getKey());
-                builder.append(ChatColor.WHITE).append(" = ").append(ChatColor.GOLD);
-                builder.append(entry.getValue().toString());
-                builder.append(ChatColor.WHITE).append(", ");
-            }
-            String message = builder.toString();
-            message = message.substring(0, message.length() - 2);
-            sender.sendMessage(message);
-            return;
-        }
-        if (!this.plugin.getMVConfig().setConfigProperty(args.get(0).toLowerCase(), args.get(1))) {
-            sender.sendMessage(String.format("%sSetting '%s' to '%s' failed!", ChatColor.RED, args.get(0).toLowerCase(), args.get(1)));
+    @Subcommand("config")
+    @CommandPermission("multiverse.core.config")
+    @CommandCompletion("@mvconfigs")
+    @Syntax("<name> [new-value]")
+    @Description("") //TODO
+    public void onConfigCommand(MVCommandIssuer issuer,
+
+                                @Syntax("<name>")
+                                @Description("") //TODO
+                                String name,
+
+                                @Optional
+                                @Single
+                                @Syntax("[new-value]")
+                                @Description("") //TODO
+                                MVConfigValue value
+    ) {
+        if (value == null) {
+            showConfigValue(issuer, name);
             return;
         }
+        updateConfigValue(issuer, name, value.getValue());
+    }
 
-        // special rule
-        if (args.get(0).equalsIgnoreCase("firstspawnworld")) {
-            // Don't forget to set the world!
-            this.plugin.getMVWorldManager().setFirstSpawnWorld(args.get(1));
-        }
+    private void showConfigValue(MVCommandIssuer issuer, String name) {
+        config.getProperty(name)
+                .onSuccess(value -> issuer.sendMessage(name + "is currently set to " + value))
+                .onFailure(e -> issuer.sendMessage(e.getMessage()));
+    }
 
-        if (this.plugin.saveMVConfigs()) {
-            sender.sendMessage(ChatColor.GREEN + "SUCCESS!" + ChatColor.WHITE + " Values were updated successfully!");
-            this.plugin.loadConfigs();
-        } else {
-            sender.sendMessage(ChatColor.RED + "FAIL!" + ChatColor.WHITE + " Check your console for details!");
-        }
+    private void updateConfigValue(MVCommandIssuer issuer, String name, Object value) {
+        config.setProperty(name, value)
+                .onSuccess(ignore -> {
+                    config.save();
+                    issuer.sendMessage("Successfully set " + name + " to " + value);
+                })
+                .onFailure(ignore -> issuer.sendMessage("Unable to set " + name + " to " + value + "."))
+                .onFailure(MultiverseException.class, e -> Option.of(e.getMVMessage()).peek(issuer::sendError));
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/ConfirmCommand.java

@@ -1,39 +1,29 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Confirms actions.
- */
+@Service
+@CommandAlias("mv")
 public class ConfirmCommand extends MultiverseCommand {
 
-    public ConfirmCommand(MultiverseCore plugin) {
-        super(plugin);
-        // Any command that is dangerous should require op
-        this.setName("Confirms a command that could destroy life, the universe and everything.");
-        this.setCommandUsage("/mv confirm");
-        this.setArgRange(0, 0);
-        this.addKey("mvconfirm");
-        this.addKey("mv confirm");
-        this.addCommandExample("/mv confirm");
-        this.setPermission("multiverse.core.confirm", "If you have not been prompted to use this, it will not do anything.", PermissionDefault.OP);
-
+    @Inject
+    public ConfirmCommand(@NotNull MVCommandManager commandManager) {
+        super(commandManager);
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        this.plugin.getCommandQueueManager().runQueuedCommand(sender);
+    @Subcommand("confirm")
+    @CommandPermission("multiverse.core.confirm")
+    @Description("{@@mv-core.confirm.description}")
+    public void onConfirmCommand(@NotNull BukkitCommandIssuer issuer) {
+        this.commandManager.getCommandQueueManager().runQueuedCommand(issuer.getIssuer());
     }
-
 }

src/main/java/com/onarandombox/MultiverseCore/commands/CoordCommand.java

@@ -1,70 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.text.DecimalFormat;
-import java.util.List;
-
-/**
- * Returns detailed information on the Players where abouts.
- */
-public class CoordCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public CoordCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Coordinates");
-        this.setCommandUsage("/mv coord");
-        this.setArgRange(0, 0);
-        this.addKey("mv coord");
-        this.addKey("mvcoord");
-        this.addKey("mvco");
-        this.addCommandExample("/mv coord");
-        this.setPermission("multiverse.core.coord", "Returns detailed information on the Players where abouts.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        if (sender instanceof Player) {
-            Player p = (Player) sender;
-            World world = p.getWorld();
-
-            if (!this.worldManager.isMVWorld(world.getName())) {
-                this.plugin.showNotMVWorldMessage(sender, world.getName());
-                return;
-            }
-
-            MultiverseWorld mvworld = this.worldManager.getMVWorld(world.getName());
-
-            p.sendMessage(ChatColor.AQUA + "--- Location Information ---");
-            p.sendMessage(ChatColor.AQUA + "World: " + ChatColor.WHITE + world.getName());
-            p.sendMessage(ChatColor.AQUA + "Alias: " + mvworld.getColoredWorldString());
-            p.sendMessage(ChatColor.AQUA + "World Scale: " + ChatColor.WHITE + mvworld.getScaling());
-            DecimalFormat df = new DecimalFormat();
-            df.setMinimumFractionDigits(0);
-            df.setMaximumFractionDigits(2);
-            p.sendMessage(ChatColor.AQUA + "Coordinates: " + ChatColor.WHITE + plugin.getLocationManipulation().strCoords(p.getLocation()));
-            p.sendMessage(ChatColor.AQUA + "Direction: " + ChatColor.WHITE + plugin.getLocationManipulation().getDirection(p.getLocation()));
-            p.sendMessage(ChatColor.AQUA + "Block: " + ChatColor.WHITE + world.getBlockAt(p.getLocation()).getType());
-        } else {
-            sender.sendMessage("This command needs to be used from a Player.");
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/CreateCommand.java

@@ -1,131 +1,143 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.bukkit.ChatColor;
-import org.bukkit.World.Environment;
-import org.bukkit.WorldType;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
+import java.util.Random;
+import java.util.stream.Collectors;
 
-/**
- * Creates a new world and loads it.
- */
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandValueFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.ParsedCommandFlags;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import com.onarandombox.MultiverseCore.utils.UnsafeCallWrapper;
+import jakarta.inject.Inject;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.bukkit.WorldType;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+@CommandAlias("mv")
 public class CreateCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
 
-    public CreateCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Create World");
-        this.setCommandUsage(String.format("/mv create %s{NAME} {ENV} %s-s [SEED] -g [GENERATOR[:ID]] -t [WORLDTYPE] [-n] -a [true|false]",
-                ChatColor.GREEN, ChatColor.GOLD));
-        this.setArgRange(2, 11); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-        this.addKey("mvcreate");
-        this.addKey("mvc");
-        this.addKey("mv create");
-        this.setPermission("multiverse.core.create", "Creates a new world and loads it.", PermissionDefault.OP);
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "world" + ChatColor.GREEN + " normal");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "lavaland" + ChatColor.RED + " nether");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "starwars" + ChatColor.AQUA + " end");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "flatroom" + ChatColor.GREEN + " normal" + ChatColor.AQUA + " -t flat");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "gargamel" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " -s gargamel");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "moonworld" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " -g BukkitFullOfMoon");
-        this.worldManager = this.plugin.getMVWorldManager();
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public CreateCommand(
+            @NotNull MVCommandManager commandManager,
+            @NotNull MVWorldManager worldManager,
+            @NotNull UnsafeCallWrapper unsafeCallWrapper
+    ) {
+        super(commandManager);
+
+        this.worldManager = worldManager;
+
+        registerFlagGroup(CommandFlagGroup.builder("mvcreate")
+                .add(CommandValueFlag.builder("--seed", String.class)
+                        .addAlias("-s")
+                        .completion(() -> Collections.singleton(String.valueOf(new Random().nextLong())))
+                        .build())
+                .add(CommandValueFlag.builder("--generator", String.class)
+                        .addAlias("-g")
+                        .completion(() -> Arrays.stream(Bukkit.getServer().getPluginManager().getPlugins())
+                                .filter(Plugin::isEnabled)
+                                .filter(genplugin -> unsafeCallWrapper.wrap(
+                                        () -> genplugin.getDefaultWorldGenerator("world", ""),
+                                        genplugin.getName(),
+                                        "Get generator"
+                                ) != null)
+                                .map(genplugin -> genplugin.getDescription().getName())
+                                .collect(Collectors.toList()))
+                        .build())
+                .add(CommandValueFlag.builder("--world-type", WorldType.class)
+                        .addAlias("-t")
+                        .context((value) -> {
+                            try {
+                                return WorldType.valueOf(value.toUpperCase());
+                            } catch (IllegalArgumentException e) {
+                                throw new InvalidCommandArgument("Invalid world type: " + value);
+                            }
+                        })
+                        .completion(() -> {
+                            List<String> types = new ArrayList<>();
+                            for (WorldType type : WorldType.values()) {
+                                types.add(type.name().toLowerCase());
+                            }
+                            return types;
+                        })
+                        .build())
+                .add(CommandFlag.builder("--adjust-spawn")
+                        .addAlias("-n")
+                        .build())
+                .add(CommandFlag.builder("--no-structures")
+                        .addAlias("-a")
+                        .build())
+                .build());
     }
-	
-	private String trimWorldName(String userInput) {
-        // Removes relative paths.
-        return userInput.replaceAll("^[./\\\\]+", "");
+
+    @Subcommand("create")
+    @CommandPermission("multiverse.core.create")
+    @CommandCompletion("@empty  @flags:groupName=mvcreate")
+    @Syntax("<name> <environment> --seed [seed] --generator [generator[:id]] --world-type [worldtype] --adjust-spawn --no-structures")
+    @Description("{@@mv-core.create.description}")
+    public void onCreateCommand(BukkitCommandIssuer issuer,
+
+                                @Conditions("validWorldName:scope=new")
+                                @Syntax("<name>")
+                                @Description("{@@mv-core.create.name.description}")
+                                String worldName,
+
+                                @Syntax("<environment>")
+                                @Description("{@@mv-core.create.environment.description}")
+                                World.Environment environment,
+
+                                @Optional
+                                @Syntax("--seed [seed] --generator [generator[:id]] --world-type [worldtype] --adjust-spawn --no-structures")
+                                @Description("{@@mv-core.create.flags.description}")
+                                String[] flags
+    ) {
+        ParsedCommandFlags parsedFlags = parseFlags(flags);
+
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES, "{worldName}", worldName);
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_ENVIRONMENT, "{environment}", environment.name());
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_SEED, "{seed}", parsedFlags.flagValue("--seed", "RANDOM", String.class));
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_WORLDTYPE, "{worldType}", parsedFlags.flagValue("--world-type", WorldType.NORMAL, WorldType.class).name());
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_ADJUSTSPAWN, "{adjustSpawn}", String.valueOf(parsedFlags.hasFlag("--adjust-spawn")));
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_GENERATOR, "{generator}", parsedFlags.flagValue("--generator", "null", String.class));
+        issuer.sendInfo(MVCorei18n.CREATE_PROPERTIES_STRUCTURES, "{structures}", String.valueOf(!parsedFlags.hasFlag("--no-structures")));
+
+        issuer.sendInfo(MVCorei18n.CREATE_LOADING);
+
+        if (!worldManager.addWorld(
+                worldName,
+                environment,
+                parsedFlags.flagValue("--seed", String.class),
+                parsedFlags.flagValue("--world-type", WorldType.NORMAL, WorldType.class),
+                parsedFlags.hasFlag("--adjust-spawn"),
+                parsedFlags.flagValue("--generator", String.class),
+                parsedFlags.hasFlag("--no-structures")
+        )) {
+            issuer.sendError(MVCorei18n.CREATE_FAILED, "{worldName}", worldName);
+            return;
+        }
+        issuer.sendInfo(MVCorei18n.CREATE_SUCCESS, "{worldName}", worldName);
     }
-	
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = trimWorldName(args.get(0));
-        File worldFile = new File(this.plugin.getServer().getWorldContainer(), worldName);
-        String env = args.get(1);
-        String seed = CommandHandler.getFlag("-s", args);
-        String generator = CommandHandler.getFlag("-g", args);
-        boolean allowStructures = true;
-        String structureString = CommandHandler.getFlag("-a", args);
-        if (structureString != null) {
-            allowStructures = Boolean.parseBoolean(structureString);
-        }
-        String typeString = CommandHandler.getFlag("-t", args);
-        boolean useSpawnAdjust = true;
-        for (String s : args) {
-            if (s.equalsIgnoreCase("-n")) {
-                useSpawnAdjust = false;
-            }
-        }
-		
-		// Make sure the world name doesn't contain the words 'plugins' and '.dat'
-		if(worldName.contains("plugins")||worldName.contains(".dat")){
-			sender.sendMessage(ChatColor.RED + "Multiverse cannot create a world that contains 'plugins' or '.dat'");
-            return;
-		}
-		
-        if (this.worldManager.isMVWorld(worldName)) {
-            sender.sendMessage(ChatColor.RED + "Multiverse cannot create " + ChatColor.GOLD + ChatColor.UNDERLINE
-                    + "another" + ChatColor.RESET + ChatColor.RED + " world named " + worldName);
-            return;
-        }
-
-        if (worldFile.exists()) {
-            sender.sendMessage(ChatColor.RED + "A Folder/World already exists with this name!");
-            sender.sendMessage(ChatColor.RED + "If you are confident it is a world you can import with /mvimport");
-            return;
-        }
-
-        Environment environment = EnvironmentCommand.getEnvFromString(env);
-        if (environment == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid environment.");
-            EnvironmentCommand.showEnvironments(sender);
-            return;
-        }
-
-        // If they didn't specify a type, default to NORMAL
-        if (typeString == null) {
-            typeString = "NORMAL";
-        }
-        WorldType type = EnvironmentCommand.getWorldTypeFromString(typeString);
-        if (type == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid World Type.");
-            EnvironmentCommand.showWorldTypes(sender);
-            return;
-        }
-        // Determine if the generator is valid. #918
-        if (generator != null) {
-            List<String> genarray = new ArrayList<String>(Arrays.asList(generator.split(":")));
-            if (genarray.size() < 2) {
-                // If there was only one arg specified, pad with another empty one.
-                genarray.add("");
-            }
-            if (this.worldManager.getChunkGenerator(genarray.get(0), genarray.get(1), "test") == null) {
-                // We have an invalid generator.
-                sender.sendMessage("Invalid generator! '" + generator + "'. " + ChatColor.RED + "Aborting world creation.");
-                return;
-            }
-        }
-        Command.broadcastCommandMessage(sender, "Starting creation of world '" + worldName + "'...");
-
-        if (this.worldManager.addWorld(worldName, environment, seed, type, allowStructures, generator, useSpawnAdjust)) {
-            Command.broadcastCommandMessage(sender, "Complete!");
-        } else {
-            Command.broadcastCommandMessage(sender, "FAILED.");
-        }
-    }
-}
+}

src/main/java/com/onarandombox/MultiverseCore/commands/DebugCommand.java

@@ -1,67 +1,63 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.dumptruckman.minecraft.util.Logging;
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-import java.util.logging.Level;
-
-/**
- * Enables debug-information.
- */
+@Service
+@CommandAlias("mv")
 public class DebugCommand extends MultiverseCommand {
 
-    public DebugCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Turn Debug on/off?");
-        this.setCommandUsage("/mv debug" + ChatColor.GOLD + " [1|2|3|off|silent]");
-        this.setArgRange(0, 1);
-        this.addKey("mv debug");
-        this.addKey("mv d");
-        this.addKey("mvdebug");
-        this.addCommandExample("/mv debug " + ChatColor.GOLD + "2");
-        this.setPermission("multiverse.core.debug", "Spams the console a bunch.", PermissionDefault.OP);
+    private final MVCoreConfig config;
+
+    @Inject
+    public DebugCommand(@NotNull MVCommandManager commandManager, @NotNull MVCoreConfig config) {
+        super(commandManager);
+        this.config = config;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() == 1) {
-            if (args.get(0).equalsIgnoreCase("off")) {
-                plugin.getMVConfig().setGlobalDebug(0);
-            } else {
-                try {
-                    int debugLevel = Integer.parseInt(args.get(0));
-                    if (debugLevel > 3 || debugLevel < 0) {
-                        throw new NumberFormatException();
-                    }
-                    plugin.getMVConfig().setGlobalDebug(debugLevel);
-                } catch (NumberFormatException e) {
-                    sender.sendMessage(ChatColor.RED + "Error" + ChatColor.WHITE
-                            + " setting debug level. Please use a number 0-3 " + ChatColor.AQUA + "(3 being many many messages!)");
-                }
-            }
-            plugin.saveMVConfigs();
-        }
-        this.displayDebugMode(sender);
+    @Subcommand("debug")
+    @CommandPermission("multiverse.core.debug")
+    @Description("{@@mv-core.debug.info.description}")
+    public void onShowDebugCommand(BukkitCommandIssuer issuer) {
+        this.displayDebugMode(issuer);
     }
 
-    private void displayDebugMode(CommandSender sender) {
-        final int debugLevel = plugin.getMVConfig().getGlobalDebug();
+    @Subcommand("debug")
+    @CommandPermission("multiverse.core.debug")
+    @CommandCompletion("@range:3")
+    @Syntax("<{@@mv-core.debug.change.syntax}>")
+    @Description("{@@mv-core.debug.change.description}")
+    public void onChangeDebugCommand(BukkitCommandIssuer issuer,
+
+                                     @Syntax("<{@@mv-core.debug.change.syntax}>")
+                                     @Description("{@@mv-core.debug.change.level.description}")
+                                     int level) {
+
+        config.setGlobalDebug(level);
+        config.save();
+        this.displayDebugMode(issuer);
+    }
+
+    private void displayDebugMode(BukkitCommandIssuer issuer) {
+        final int debugLevel = config.getGlobalDebug();
         if (debugLevel == 0) {
-            sender.sendMessage("Multiverse Debug mode is " + ChatColor.RED + "OFF");
-        } else {
-            sender.sendMessage("Multiverse Debug mode is " + ChatColor.GREEN + debugLevel);
-            Logging.fine("Multiverse Debug ENABLED");
+            issuer.sendInfo(MVCorei18n.DEBUG_INFO_OFF);
+            return;
         }
+        issuer.sendInfo(MVCorei18n.DEBUG_INFO_ON, "{level}", String.valueOf(debugLevel));
+        Logging.fine("Multiverse Debug ENABLED.");
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/DeleteCommand.java

@@ -1,60 +1,67 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.MessageType;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
 import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
 import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Deletes worlds.
- */
+@Service
+@CommandAlias("mv")
 public class DeleteCommand extends MultiverseCommand {
 
-    public DeleteCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Delete World");
-        this.setCommandUsage("/mv delete" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvdelete");
-        this.addKey("mv delete");
-        this.addCommandExample("/mv delete " + ChatColor.GOLD + "MyWorld");
-        this.setPermission("multiverse.core.delete", "Deletes a world on your server. " + ChatColor.RED + "PERMANENTLY.", PermissionDefault.OP);
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public DeleteCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = args.get(0);
+    @Subcommand("delete")
+    @CommandPermission("multiverse.core.delete")
+    @CommandCompletion("@mvworlds:scope=both")
+    @Syntax("<world>")
+    @Description("{@@mv-core.delete.description}")
+    public void onDeleteCommand(BukkitCommandIssuer issuer,
 
-        this.plugin.getCommandQueueManager().addToQueue(new QueuedCommand(
-                sender,
-                deleteRunnable(sender, worldName),
-                String.format("Are you sure you want to delete world '%s'? You cannot undo this action.", worldName)
+                                @Single
+                                @Conditions("validWorldName:scope=both")
+                                @Syntax("<world>")
+                                @Description("The world you want to delete.")
+                                String worldName
+    ) {
+        this.commandManager.getCommandQueueManager().addToQueue(new QueuedCommand(
+                issuer.getIssuer(),
+                () -> {
+                    issuer.sendInfo(MVCorei18n.DELETE_DELETING,
+                            "{world}", worldName);
+                    if (!this.worldManager.deleteWorld(worldName)) {
+                        issuer.sendError(MVCorei18n.DELETE_FAILED,
+                                "{world}", worldName);
+                        return;
+                    }
+                    issuer.sendInfo(MVCorei18n.DELETE_SUCCESS,
+                            "{world}", worldName);
+                },
+                this.commandManager.formatMessage(
+                        issuer,
+                        MessageType.INFO,
+                        MVCorei18n.DELETE_PROMPT,
+                        "{world}", worldName)
         ));
     }
-
-    private Runnable deleteRunnable(@NotNull CommandSender sender,
-                                    @NotNull String worldName) {
-
-        return () -> {
-            sender.sendMessage(String.format("Deleting world '%s'...", worldName));
-            if (this.plugin.getMVWorldManager().deleteWorld(worldName)) {
-                sender.sendMessage(String.format("%sWorld %s was deleted!", ChatColor.GREEN, worldName));
-                return;
-            }
-            sender.sendMessage(String.format("%sThere was an issue deleting '%s'! Please check console for errors.",
-                    ChatColor.RED, worldName));
-        };
-    }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/EnvironmentCommand.java

@@ -1,118 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.World;
-import org.bukkit.WorldType;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Lists valid known environments.
- */
-public class EnvironmentCommand extends MultiverseCommand {
-
-    public EnvironmentCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("List Environments");
-        this.setCommandUsage("/mv env");
-        this.setArgRange(0, 0);
-        this.addKey("mvenv");
-        this.addKey("mv env");
-        this.addKey("mv type");
-        this.addKey("mv environment");
-        this.addKey("mv environments");
-        this.addCommandExample("/mv env");
-        this.setPermission("multiverse.core.list.environments", "Lists valid known environments/world types.", PermissionDefault.OP);
-    }
-
-    /**
-     * Shows all valid known environments to a {@link CommandSender}.
-     *
-     * @param sender The {@link CommandSender}.
-     */
-    public static void showEnvironments(CommandSender sender) {
-        sender.sendMessage(ChatColor.YELLOW + "Valid Environments are:");
-        sender.sendMessage(ChatColor.GREEN + "NORMAL");
-        sender.sendMessage(ChatColor.RED + "NETHER");
-        sender.sendMessage(ChatColor.AQUA + "END");
-    }
-    /**
-     * Shows all valid known world types to a {@link CommandSender}.
-     *
-     * @param sender The {@link CommandSender}.
-     */
-    public static void showWorldTypes(CommandSender sender) {
-        sender.sendMessage(ChatColor.YELLOW + "Valid World Types are:");
-        sender.sendMessage(String.format("%sNORMAL%s, %sFLAT, %sLARGEBIOMES %sor %sVERSION_1_1",
-                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, ChatColor.RED, ChatColor.WHITE, ChatColor.GOLD));
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        EnvironmentCommand.showEnvironments(sender);
-        EnvironmentCommand.showWorldTypes(sender);
-    }
-
-    /**
-     * Converts a {@link String} into a {@link WorldType}.
-     *
-     * @param type The WorldType as a {@link String}
-     * @return The WorldType as a {@link WorldType}
-     */
-    public static WorldType getWorldTypeFromString(String type) {
-        // Don't reference the enum directly as there aren't that many, and we can be more forgiving to users this way
-        if (type.equalsIgnoreCase("normal")) {
-            type = "NORMAL";
-        } else if (type.equalsIgnoreCase("flat")) {
-            type = "FLAT";
-        } else if (type.equalsIgnoreCase("largebiomes")) {
-            type = "LARGE_BIOMES";
-        } else if (type.equalsIgnoreCase("amplified")) {
-            type = "AMPLIFIED";
-        }
-        try {
-            // Now that we've converted a potentially unfriendly value
-            // to a friendly one, get it from the ENUM!
-            return WorldType.valueOf(type);
-        } catch (IllegalArgumentException e) {
-            return null;
-        }
-    }
-
-    /**
-     * Converts a {@link String} into an {@link org.bukkit.World.Environment}.
-     *
-     * @param env The environment as {@link String}
-     * @return The environment as {@link org.bukkit.World.Environment}
-     */
-    public static World.Environment getEnvFromString(String env) {
-        env = env.toUpperCase();
-        // Don't reference the enum directly as there aren't that many, and we can be more forgiving to users this way
-        if (env.equalsIgnoreCase("HELL") || env.equalsIgnoreCase("NETHER"))
-            env = "NETHER";
-
-        if (env.equalsIgnoreCase("END") || env.equalsIgnoreCase("THEEND") || env.equalsIgnoreCase("STARWARS"))
-            env = "THE_END";
-
-        if (env.equalsIgnoreCase("NORMAL") || env.equalsIgnoreCase("WORLD"))
-            env = "NORMAL";
-
-        try {
-            // Now that we've converted a potentially unfriendly value
-            // to a friendly one, get it from the ENUM!
-            return World.Environment.valueOf(env);
-        } catch (IllegalArgumentException e) {
-            return null;
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/GameruleCommand.java

@@ -1,116 +1,79 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorld;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.commandtools.context.GameRuleValue;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
 import org.bukkit.GameRule;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Allows management of Anchor Destinations.
- */
+@Service
+@CommandAlias("mv")
 public class GameruleCommand extends MultiverseCommand {
 
-    public GameruleCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Set a Minecraft Game Rule for a World.");
-        this.setCommandUsage("/mv gamerule " + ChatColor.GREEN + "{RULE} {VALUE}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(2, 3);
-        this.addKey("mv gamerule");
-        this.addKey("mv rule");
-        this.addKey("mvgamerule");
-        this.addKey("mvrule");
-        this.addCommandExample("/mv gamerule " + ChatColor.GREEN + "doMobLoot false");
-        this.addCommandExample("/mvrule " + ChatColor.GREEN + "keepInventory true " + ChatColor.RED + "world_nether");
-        this.setPermission("multiverse.core.gamerule.set", "Allows a player to set a gamerule.", PermissionDefault.OP);
+    @Inject
+    public GameruleCommand(@NotNull MVCommandManager commandManager) {
+        super(commandManager);
     }
 
+    @Subcommand("gamerule")
+    @CommandPermission("multiverse.core.gamerule")
+    @CommandCompletion("@gamerules true|false|@range:1-10 @mvworlds:multiple|*")
+    @Syntax("<Gamerule> <Gamerule value> [World or *]")
+    @Description("{@@mv-core.gamerule.description}")
+    public void onGameruleCommand(BukkitCommandIssuer issuer,
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        final Player p;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        } else {
-            p = null;
-        }
+                                  @Syntax("<Gamerule>")
+                                  @Description("{@@mv-core.gamerule.gamerule.description}")
+                                  GameRule gamerule,
 
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage("From the command line, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
+                                  @Syntax("<Value>")
+                                  @Description("{@@mv-core.gamerule.value.description}")
+                                  GameRuleValue gameRuleValue,
 
-        final GameRule gameRule = GameRule.getByName(args.get(0));
-        final String value = args.get(1);
-        final World world;
-        if (args.size() == 2) {
-            world = p.getWorld();
-        } else {
-            world = Bukkit.getWorld(args.get(2));
-            if (world == null) {
-                sender.sendMessage(ChatColor.RED + "Failure!" + ChatColor.WHITE + " World " + ChatColor.AQUA + args.get(2)
-                        + ChatColor.WHITE + " does not exist.");
-                return;
+                                  @Flags("resolve=issuerAware")
+                                  @Syntax("[World or *]")
+                                  @Description("{@@mv-core.gamerule.world.description}")
+                                  MVWorld[] worlds
+    ) {
+        Object value = gameRuleValue.getValue();
+        boolean success = true;
+        for(MVWorld world : worlds) {
+            // Set gamerules and add false to list if it fails
+            if (!world.getCBWorld().setGameRule(gamerule, value)) {
+                issuer.sendError(MVCorei18n.GAMERULE_FAILED,
+                        "{gamerule}", gamerule.getName(),
+                        "{value}", value.toString(),
+                        "{world}", world.getName(),
+                        "{type}", gamerule.getType().getName());
+                success = false;
             }
         }
-
-        if (gameRule == null) {
-            sender.sendMessage(ChatColor.RED + "Failure! " + ChatColor.AQUA + args.get(0) + ChatColor.WHITE
-                    + " is not a valid gamerule.");
-        } else {
-            if (gameRule.getType() == Boolean.class) {
-                boolean booleanValue;
-                if (value.equalsIgnoreCase("true")) {
-                    booleanValue = true;
-                } else if (value.equalsIgnoreCase("false")) {
-                    booleanValue = false;
-                } else {
-                    sender.sendMessage(getErrorMessage(gameRule.getName(), value) + "it can only be set to true or false.");
-                    return;
-                }
-
-                if (!world.setGameRule(gameRule, booleanValue)) {
-                    sender.sendMessage(getErrorMessage(gameRule.getName(), value) + "something went wrong.");
-                    return;
-                }
-            } else if (gameRule.getType() == Integer.class) {
-                try {
-                    if (!world.setGameRule(gameRule, Integer.parseInt(value))) {
-                        throw new NumberFormatException();
-                    }
-                } catch (NumberFormatException e) {
-                    sender.sendMessage(getErrorMessage(gameRule.getName(), value) + "it can only be set to a positive integer.");
-                    return;
-                }
-            } else {
-                sender.sendMessage(ChatColor.RED + "Failure!" + ChatColor.WHITE + " Gamerule " + ChatColor.AQUA + gameRule.getName()
-                        + ChatColor.WHITE + " isn't supported yet, please let us know about it.");
-                return;
+        // Tell user if it was successful
+        if (success) {
+            if (worlds.length == 1) {
+                issuer.sendInfo(MVCorei18n.GAMERULE_SUCCESS_SINGLE,
+                        "{gamerule}", gamerule.getName(),
+                        "{value}", value.toString(),
+                        "{world}", worlds[0].getName());
+            }
+            else if (worlds.length > 1) {
+                issuer.sendInfo(MVCorei18n.GAMERULE_SUCCESS_MULTIPLE,
+                        "{gamerule}", gamerule.getName(),
+                        "{value}", value.toString(),
+                        "{count}", String.valueOf(worlds.length));
             }
-
-            sender.sendMessage(ChatColor.GREEN + "Success!" + ChatColor.WHITE + " Gamerule " + ChatColor.AQUA + gameRule.getName()
-                    + ChatColor.WHITE + " was set to " + ChatColor.GREEN + value + ChatColor.WHITE + ".");
         }
     }
-
-    private String getErrorMessage(String gameRule, String value) {
-        return ChatColor.RED + "Failure!" + ChatColor.WHITE + " Gamerule " + ChatColor.AQUA + gameRule
-                + ChatColor.WHITE + " could not be set to " + ChatColor.RED + value + ChatColor.WHITE + ", ";
-    }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/GamerulesCommand.java

@@ -1,95 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.display.ColorAlternator;
-import com.onarandombox.MultiverseCore.display.ContentDisplay;
-import com.onarandombox.MultiverseCore.display.settings.MapDisplaySettings;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.GameRule;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Allows management of Anchor Destinations.
- */
-public class GamerulesCommand extends MultiverseCommand {
-
-    public GamerulesCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("List the Minecraft Game Rules for a World.");
-        this.setCommandUsage("/mv gamerules" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(0, 1);
-        this.addKey("mv gamerules");
-        this.addKey("mv rules");
-        this.addKey("mvgamerules");
-        this.addKey("mvrules");
-        this.addCommandExample("/mv gamerules");
-        this.addCommandExample("/mvrules " + ChatColor.RED + "world_nether");
-        this.setPermission("multiverse.core.gamerule.list", "Allows a player to list gamerules.", PermissionDefault.OP);
-    }
-
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        final Player p;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        } else {
-            p = null;
-        }
-
-        if (args.size() == 0 && p == null) {
-            sender.sendMessage("From the command line, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        final World world;
-        if (args.size() == 0) {
-            world = p.getWorld();
-        } else {
-            world = Bukkit.getWorld(args.get(0));
-            if (world == null) {
-                sender.sendMessage(ChatColor.RED + "Failure!" + ChatColor.WHITE + " World " + ChatColor.AQUA + args.get(0)
-                        + ChatColor.WHITE + " does not exist.");
-                return;
-            }
-        }
-
-        ContentDisplay.forContent(getGameRuleMap(world))
-                .header("=== Gamerules for %s%s%s ===", ChatColor.AQUA, world.getName(), ChatColor.WHITE)
-                .colorTool(ColorAlternator.with(ChatColor.GREEN, ChatColor.GOLD))
-                .setting(MapDisplaySettings.OPERATOR, ": ")
-                .show(sender);
-    }
-
-    private Map<String, Object> getGameRuleMap(World world) {
-        Map<String, Object> gameRuleMap = new HashMap<>();
-        for (GameRule<?> rule : GameRule.values()) {
-            Object value = world.getGameRuleValue(rule);
-            if (value == null) {
-                gameRuleMap.put(rule.getName(), "null");
-                continue;
-            }
-            gameRuleMap.put(rule.getName(), value);
-        }
-        return gameRuleMap;
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/GeneratorCommand.java

@@ -1,60 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.dumptruckman.minecraft.util.Logging;
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-import org.bukkit.plugin.Plugin;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Returns a list of loaded generator plugins.
- */
-public class GeneratorCommand extends MultiverseCommand {
-
-    public GeneratorCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("World Information");
-        this.setCommandUsage("/mv generators");
-        this.setArgRange(0, 0);
-        this.addKey("mv generators");
-        this.addKey("mvgenerators");
-        this.addKey("mv gens");
-        this.addKey("mvgens");
-        this.addCommandExample("/mv generators");
-        this.setPermission("multiverse.core.generator", "Returns a list of Loaded Generator Plugins.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Logging.info("PLEASE IGNORE the 'Plugin X does not contain any generators' message below!");
-        Plugin[] plugins = this.plugin.getServer().getPluginManager().getPlugins();
-        List<String> generators = new ArrayList<String>();
-        for (Plugin p : plugins) {
-            if (p.isEnabled() && p.getDefaultWorldGenerator("world", "") != null) {
-                generators.add(p.getDescription().getName());
-            }
-        }
-        sender.sendMessage(ChatColor.AQUA + "--- Loaded Generator Plugins ---");
-        String loadedGens = "";
-        boolean altColor = false;
-        for (String s : generators) {
-            loadedGens += (altColor ? ChatColor.YELLOW : ChatColor.WHITE) + s + " ";
-            altColor = !altColor;
-        }
-        if (loadedGens.length() == 0) {
-            loadedGens = ChatColor.RED + "No Generator Plugins found.";
-        }
-        sender.sendMessage(loadedGens);
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/HelpCommand.java

@@ -1,98 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Displays a nice help menu.
- */
-public class HelpCommand extends PaginatedCoreCommand<Command> {
-
-    public HelpCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Get Help with Multiverse");
-        this.setCommandUsage("/mv " + ChatColor.GOLD + "[FILTER] [PAGE #]");
-        this.setArgRange(0, 2);
-        this.addKey("mv");
-        this.addKey("mvh");
-        this.addKey("mvhelp");
-        this.addKey("mv help");
-        this.addKey("mvsearch");
-        this.addKey("mv search");
-        this.addCommandExample("/mv help ?");
-        this.setPermission("multiverse.help", "Displays a nice help menu.", PermissionDefault.TRUE);
-        this.setItemsPerPage(7); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-    }
-
-    @Override
-    protected List<Command> getFilteredItems(List<Command> availableItems, String filter) {
-        String expression = "(?i).*" + cleanFilter(filter) + ".*";
-        List<Command> filtered = new ArrayList<Command>();
-
-        for (Command c : availableItems) {
-            if (stitchThisString(c.getKeyStrings()).matches(expression)
-                    || c.getCommandName().matches(expression)
-                    || c.getCommandDesc().matches(expression)
-                    || c.getCommandUsage().matches(expression)
-                    || c.getCommandExamples().stream().anyMatch(eg -> eg.matches(expression))) {
-                filtered.add(c);
-            }
-        }
-        return filtered;
-    }
-
-    @Override
-    protected String getItemText(Command item) {
-        return ChatColor.AQUA + item.getCommandUsage();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        sender.sendMessage(ChatColor.AQUA + "====[ Multiverse Help ]====");
-
-        FilterObject filterObject = this.getPageAndFilter(args);
-
-        List<Command> availableCommands = new ArrayList<Command>(this.plugin.getCommandHandler().getCommands(sender));
-        if (filterObject.getFilter().length() > 0) {
-            availableCommands = this.getFilteredItems(availableCommands, filterObject.getFilter());
-            if (availableCommands.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE
-                        + "No commands matched your filter: " + ChatColor.AQUA + filterObject.getFilter());
-                return;
-            }
-        }
-
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.AQUA + " Add a '" + ChatColor.DARK_PURPLE + "?" + ChatColor.AQUA + "' after a command to see more about it.");
-            for (Command c : availableCommands) {
-                sender.sendMessage(ChatColor.AQUA + c.getCommandUsage());
-            }
-            return;
-        }
-
-        int totalPages = (int) Math.ceil(availableCommands.size() / (this.itemsPerPage + 0.0));
-
-        if (filterObject.getPage() > totalPages) {
-            filterObject.setPage(totalPages);
-        }
-
-        sender.sendMessage(ChatColor.AQUA + " Page " + filterObject.getPage() + " of " + totalPages);
-        sender.sendMessage(ChatColor.AQUA + " Add a '" + ChatColor.DARK_PURPLE + "?" + ChatColor.AQUA + "' after a command to see more about it.");
-
-        this.showPage(filterObject.getPage(), sender, availableCommands);
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ImportCommand.java

@@ -1,137 +1,104 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.utils.WorldNameChecker;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.bukkit.ChatColor;
-import org.bukkit.World.Environment;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandValueFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.ParsedCommandFlags;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import com.onarandombox.MultiverseCore.utils.UnsafeCallWrapper;
+import jakarta.inject.Inject;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.io.File;
-import java.util.Collection;
-import java.util.List;
-
-/**
- * Imports a new world of the specified type.
- */
+@Service
+@CommandAlias("mv")
 public class ImportCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
 
-    public ImportCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Import World");
-        this.setCommandUsage("/mv import" + ChatColor.GREEN + " {NAME} {ENV}" + ChatColor.GOLD + " -g [GENERATOR[:ID]] [-n]");
-        this.setArgRange(1, 5); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-        this.addKey("mvimport");
-        this.addKey("mvim");
-        this.addKey("mv import");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "gargamel" + ChatColor.GREEN + " normal");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "hell_world" + ChatColor.GREEN + " nether");
-        this.addCommandExample("To import a world that uses a generator, you'll need the generator:");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "CleanRoom" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " CleanRoomGenerator");
-        this.setPermission("multiverse.core.import", "Imports a new world of the specified type.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public ImportCommand(
+            @NotNull MVCommandManager commandManager,
+            @NotNull MVWorldManager worldManager,
+            @NotNull UnsafeCallWrapper unsafeCallWrapper
+    ) {
+        super(commandManager);
+        this.worldManager = worldManager;
+
+        registerFlagGroup(CommandFlagGroup.builder("mvimport")
+                .add(CommandValueFlag.builder("--generator", String.class)
+                        .addAlias("-g")
+                        .completion(() -> Arrays.stream(Bukkit.getServer().getPluginManager().getPlugins())
+                                .filter(Plugin::isEnabled)
+                                .filter(genplugin -> unsafeCallWrapper.wrap(
+                                        () -> genplugin.getDefaultWorldGenerator("world", ""),
+                                        genplugin.getName(),
+                                        "Get generator"
+                                ) != null)
+                                .map(genplugin -> genplugin.getDescription().getName())
+                                .collect(Collectors.toList()))
+                        .build())
+                .add(CommandFlag.builder("--adjust-spawn")
+                        .addAlias("-a")
+                        .build())
+                .build());
     }
 
-    private String getPotentialWorldStrings() {
-        final Collection<String> potentialWorlds = this.worldManager.getPotentialWorlds();
-        StringBuilder worldList = new StringBuilder();
-        ChatColor currColor = ChatColor.WHITE;
+    @Subcommand("import")
+    @CommandPermission("multiverse.core.import")
+    @CommandCompletion("@mvworlds:scope=potential  @flags:groupName=mvimport")
+    @Syntax("<name> <env> --generator [generator[:id]] --adjust-spawn")
+    @Description("{@@mv-core.import.description")
+    public void onImportCommand(BukkitCommandIssuer issuer,
 
-        for (String world : potentialWorlds) {
-            worldList.append(currColor).append(world).append(' ');
-            currColor = currColor == ChatColor.WHITE ? ChatColor.YELLOW : ChatColor.WHITE;
+                                @Conditions("validWorldName:scope=new")
+                                @Syntax("<name>")
+                                @Description("{@@mv-core.import.name.description}")
+                                String worldName,
+
+                                @Syntax("<env>")
+                                @Description("{@@mv-core.import.env.description}")
+                                World.Environment environment,
+
+                                @Optional
+                                @Syntax("--generator [generator[:id]] --adjust-spawn")
+                                @Description("{@@mv-core.import.other.description}")
+                                String[] flags) {
+
+        ParsedCommandFlags parsedFlags = parseFlags(flags);
+
+        issuer.sendInfo(MVCorei18n.IMPORT_IMPORTING,
+                "{world}", worldName);
+
+        if (!this.worldManager.addWorld(
+                worldName, environment,
+                null,
+                null,
+                null,
+                parsedFlags.flagValue("--generator", String.class),
+                parsedFlags.hasFlag("--adjust-spawn"))
+        ) {
+            issuer.sendError(MVCorei18n.IMPORT_FAILED);
+            return;
         }
-
-        return worldList.toString();
+        issuer.sendInfo(MVCorei18n.IMPORT_SUCCESS);
     }
-    
-    private String trimWorldName(String userInput) {
-        // Removes relative paths.
-        return userInput.replaceAll("^[./\\\\]+", "");
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = trimWorldName(args.get(0));
-
-        if (worldName.toLowerCase().equals("--list") || worldName.toLowerCase().equals("-l")) {
-            String worldList = this.getPotentialWorldStrings();
-            if (worldList.length() > 2) {
-                sender.sendMessage(ChatColor.AQUA + "====[ These look like worlds ]====");
-                sender.sendMessage(worldList);
-            } else {
-                sender.sendMessage(ChatColor.RED + "No potential worlds found. Sorry!");
-            }
-            return;
-        }
-        // Since we made an exception for the list, we have to make sure they have at least 2 params:
-        // Note the exception is --list, which is covered above.
-        if (args.size() == 1 || worldName.length() < 1) {
-            this.showHelp(sender);
-            return;
-        }
-		
-		// Make sure the world name doesn't contain the words 'plugins' and '.dat'
-		if(worldName.contains("plugins")||worldName.contains(".dat")){
-			sender.sendMessage(ChatColor.RED + "Multiverse cannot create a world that contains 'plugins' or '.dat'");
-            return;
-		}
-
-        // Make sure we don't already know about this world.
-        if (this.worldManager.isMVWorld(worldName)) {
-            sender.sendMessage(ChatColor.GREEN + "Multiverse" + ChatColor.WHITE
-                    + " already knows about '" + ChatColor.AQUA + worldName + ChatColor.WHITE + "'!");
-            return;
-        }
-
-        File worldFile = new File(this.plugin.getServer().getWorldContainer(), worldName);
-
-        String generator = CommandHandler.getFlag("-g", args);
-        boolean useSpawnAdjust = true;
-        for (String s : args) {
-            if (s.equalsIgnoreCase("-n")) {
-                useSpawnAdjust = false;
-            }
-        }
-
-        String env = args.get(1);
-        Environment environment = EnvironmentCommand.getEnvFromString(env);
-        if (environment == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid environment.");
-            EnvironmentCommand.showEnvironments(sender);
-            return;
-        }
-
-        if (!worldFile.exists()) {
-            sender.sendMessage(ChatColor.RED + "FAILED.");
-            String worldList = this.getPotentialWorldStrings();
-            sender.sendMessage("That world folder does not exist. These look like worlds to me:");
-            sender.sendMessage(worldList);
-        } else if (!WorldNameChecker.isValidWorldFolder(worldFile)) {
-            sender.sendMessage(ChatColor.RED + "FAILED.");
-            sender.sendMessage(String.format("'%s' does not appear to be a world. It is lacking a .dat file.",
-                                             worldName));
-        } else if (env == null) {
-            sender.sendMessage(ChatColor.RED + "FAILED.");
-            sender.sendMessage("That world environment did not exist.");
-            sender.sendMessage("For a list of available world types, type: " + ChatColor.AQUA + "/mvenv");
-        } else {
-            Command.broadcastCommandMessage(sender, String.format("Starting import of world '%s'...", worldName));
-            if (this.worldManager.addWorld(worldName, environment, null, null, null, generator, useSpawnAdjust))
-                Command.broadcastCommandMessage(sender, ChatColor.GREEN + "Complete!");
-            else
-                Command.broadcastCommandMessage(sender, ChatColor.RED + "Failed!");
-        }
-    }
-}
+}

src/main/java/com/onarandombox/MultiverseCore/commands/InfoCommand.java

@@ -1,274 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.FancyText;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.FancyColorScheme;
-import com.onarandombox.MultiverseCore.utils.FancyHeader;
-import com.onarandombox.MultiverseCore.utils.FancyMessage;
-import org.bukkit.ChatColor;
-import org.bukkit.Location;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.ArrayList;
-import java.util.List;
-
-// Will use when we can compile with JDK 6
-//import com.sun.xml.internal.ws.util.StringUtils;
-
-/**
- * Returns detailed information about a world.
- */
-public class InfoCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public InfoCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("World Information");
-        this.setCommandUsage("/mv info" + ChatColor.GOLD + " [WORLD] [PAGE]");
-        this.setArgRange(0, 2);
-        this.addKey("mvinfo");
-        this.addKey("mvi");
-        this.addKey("mv info");
-        this.addCommandExample("/mv info " + ChatColor.GOLD + "1");
-        this.addCommandExample("/mv info " + ChatColor.GOLD + "3");
-        this.setPermission("multiverse.core.info", "Returns detailed information on the world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        String worldName = "";
-        int pageNum = 0;
-
-        if (args.size() == 0) {
-            if (sender instanceof Player) {
-                Player p = (Player) sender;
-                worldName = p.getWorld().getName();
-            } else {
-                sender.sendMessage("You must enter a" + ChatColor.LIGHT_PURPLE + " world" + ChatColor.WHITE + " from the console!");
-                return;
-            }
-        } else if (args.size() == 1) {
-            if (this.worldManager.isMVWorld(args.get(0))) {
-                // then we have a world!
-                worldName = args.get(0);
-            } else if (this.worldManager.getUnloadedWorlds().contains(args.get(0))) {
-                sender.sendMessage("That world exists, but it is unloaded!");
-                sender.sendMessage(String.format("You can load it with: %s/mv load %s", ChatColor.AQUA, args.get(0)));
-                return;
-            } else {
-                if (sender instanceof Player) {
-                    Player p = (Player) sender;
-                    worldName = p.getWorld().getName();
-                    try {
-                        pageNum = Integer.parseInt(args.get(0)) - 1;
-                    } catch (NumberFormatException e) {
-                        sender.sendMessage("That world does not exist.");
-                        return;
-                    }
-                } else {
-                    sender.sendMessage("You must enter a" + ChatColor.LIGHT_PURPLE + " world" + ChatColor.WHITE + " from the console!");
-                    return;
-                }
-            }
-        } else if (args.size() == 2) {
-            worldName = args.get(0);
-            try {
-                pageNum = Integer.parseInt(args.get(1)) - 1;
-            } catch (NumberFormatException e) {
-                pageNum = 0;
-            }
-        }
-
-        if (this.worldManager.isMVWorld(worldName)) {
-            Player p = null;
-            if (sender instanceof Player) {
-                p = (Player) sender;
-            }
-            showPage(pageNum, sender, this.buildEntireCommand(this.worldManager.getMVWorld(worldName), p));
-        } else if (this.worldManager.getUnloadedWorlds().contains(worldName)) {
-            sender.sendMessage("That world exists, but it is unloaded!");
-            sender.sendMessage(String.format("You can load it with: %s/mv load %s", ChatColor.AQUA, worldName));
-        } else if (this.plugin.getServer().getWorld(worldName) != null) {
-            sender.sendMessage("That world exists, but Multiverse does not know about it!");
-            sender.sendMessage("You can import it with" + ChatColor.AQUA + "/mv import " + ChatColor.GREEN + worldName + ChatColor.LIGHT_PURPLE + "{ENV}");
-            sender.sendMessage("For available environments type " + ChatColor.GREEN + "/mv env");
-        }
-    }
-
-    private List<List<FancyText>> buildEntireCommand(MultiverseWorld world, Player p) {
-        List<FancyText> message = new ArrayList<FancyText>();
-        List<List<FancyText>> worldInfo = new ArrayList<List<FancyText>>();
-        // Page 1
-        FancyColorScheme colors = new FancyColorScheme(ChatColor.AQUA, ChatColor.AQUA, ChatColor.GOLD, ChatColor.WHITE);
-        message.add(new FancyHeader("General Info", colors));
-        message.add(new FancyMessage("World Name: ", world.getName(), colors));
-        message.add(new FancyMessage("World UID: ", world.getCBWorld().getUID().toString(), colors));
-        message.add(new FancyMessage("World Alias: ", world.getColoredWorldString(), colors));
-        message.add(new FancyMessage("Game Mode: ", world.getGameMode().toString(), colors));
-        message.add(new FancyMessage("Difficulty: ", world.getDifficulty().toString(), colors));
-
-        //message.add(new FancyMessage("Game Mode: ", StringUtils.capitalize(world.getGameMode().toString()), colors));
-        Location spawn = world.getSpawnLocation();
-        message.add(new FancyMessage("Spawn Location: ", plugin.getLocationManipulation().strCoords(spawn), colors));
-        message.add(new FancyMessage("World Scale: ", String.valueOf(world.getScaling()), colors));
-        message.add(new FancyMessage("World Seed: ", String.valueOf(world.getSeed()), colors));
-        if (world.getPrice() > 0) {
-            message.add(new FancyMessage("Price to enter this world: ",
-                    plugin.getEconomist().formatPrice(world.getPrice(), world.getCurrency()),
-                    colors));
-        } else if (world.getPrice() < 0) {
-            message.add(new FancyMessage("Reward for entering this world: ",
-                    plugin.getEconomist().formatPrice(-world.getPrice(), world.getCurrency()),
-                    colors));
-        } else {
-            message.add(new FancyMessage("Price to enter this world: ", ChatColor.GREEN + "FREE!", colors));
-        }
-
-        if (world.getRespawnToWorld() != null) {
-            MultiverseWorld respawn = this.worldManager.getMVWorld(world.getRespawnToWorld());
-            if (respawn != null) {
-                message.add(new FancyMessage("Players will respawn in: ", respawn.getColoredWorldString(), colors));
-            } else {
-                message.add(new FancyMessage("Players will respawn in: ", ChatColor.RED + "!!INVALID!!", colors));
-            }
-
-        }
-
-        worldInfo.add(message);
-        // Page 2
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("More World Settings", colors));
-        message.add(new FancyMessage("World Type: ", world.getWorldType().toString(), colors));
-        message.add(new FancyMessage("Generator: ", world.getGenerator(), colors));
-        message.add(new FancyMessage("Structures: ", world.getCBWorld().canGenerateStructures() + "", colors));
-        message.add(new FancyMessage("Weather: ", world.isWeatherEnabled() + "", colors));
-        message.add(new FancyMessage("Players will get hungry: ", world.getHunger() + "", colors));
-        message.add(new FancyMessage("Keep spawn in memory: ", world.isKeepingSpawnInMemory() + "", colors));
-        message.add(new FancyHeader("PVP Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.isPVPEnabled() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getPVP() + "", colors));
-        worldInfo.add(message);
-        // Page 3
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("Monster Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.canMonstersSpawn() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getAllowMonsters() + "", colors));
-        if (world.getMonsterList().size() > 0) {
-            if (world.canMonstersSpawn()) {
-                message.add(new FancyMessage("Monsters that" + ChatColor.RED + " CAN NOT "
-                        + ChatColor.GREEN + "spawn: ", toCommaSeperated(world.getMonsterList()), colors));
-            } else {
-                message.add(new FancyMessage("Monsters that" + ChatColor.GREEN + " CAN SPAWN: ", toCommaSeperated(world.getMonsterList()), colors));
-            }
-        } else {
-            message.add(new FancyMessage("Monsters that CAN spawn: ", world.canMonstersSpawn() ? "ALL" : "NONE", colors));
-        }
-        worldInfo.add(message);
-
-        // Page 4
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("Animal Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.canAnimalsSpawn() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getAllowAnimals() + "", colors));
-        if (world.getAnimalList().size() > 0) {
-            if (world.canAnimalsSpawn()) {
-                message.add(new FancyMessage("Animals that" + ChatColor.RED + " CAN NOT "
-                        + ChatColor.GREEN + "spawn: ", toCommaSeperated(world.getAnimalList()), colors));
-            } else {
-                message.add(new FancyMessage("Animals that" + ChatColor.GREEN + " CAN SPAWN: ", toCommaSeperated(world.getAnimalList()), colors));
-            }
-        } else {
-            message.add(new FancyMessage("Animals that CAN spawn: ", world.canAnimalsSpawn() ? "ALL" : "NONE", colors));
-        }
-        worldInfo.add(message);
-
-        return worldInfo;
-    }
-
-    private static String toCommaSeperated(List<String> list) {
-        if (list == null || list.size() == 0) {
-            return "";
-        }
-        if (list.size() == 1) {
-            return list.get(0);
-        }
-        String result = list.get(0);
-
-        for (int i = 1; i < list.size() - 1; i++) {
-            result += ", " + list.get(i);
-        }
-        result += " and " + list.get(list.size() - 1);
-        return result;
-    }
-
-    /**
-     * Gets a "positive" or "negative" {@link ChatColor}.
-     *
-     * @param positive Whether this {@link ChatColor} should be "positive".
-     * @return The {@link ChatColor}.
-     */
-    protected ChatColor getChatColor(boolean positive) {
-        return positive ? ChatColor.GREEN : ChatColor.RED;
-    }
-
-    private static void showPage(int page, CommandSender sender, List<List<FancyText>> doc) {
-        page = page < 0 ? 0 : page;
-        page = page > doc.size() - 1 ? doc.size() - 1 : page;
-        boolean altColor = false;
-        boolean appendedPageNum = false;
-        if (sender instanceof Player) {
-            List<FancyText> list = doc.get(page);
-            for (FancyText fancyT : list) {
-                if (fancyT instanceof FancyMessage) {
-                    FancyMessage text = (FancyMessage) fancyT;
-                    text.setAltColor(altColor);
-                    altColor = !altColor;
-                    sender.sendMessage(text.getFancyText());
-                } else if (fancyT instanceof FancyHeader) {
-                    FancyHeader text = (FancyHeader) fancyT;
-                    if (!appendedPageNum) {
-                        text.appendText(ChatColor.DARK_PURPLE + " [ Page " + (page + 1) + " of " + doc.size() + " ]");
-                        appendedPageNum = true;
-                    }
-                    sender.sendMessage(text.getFancyText());
-                    altColor = false;
-                }
-            }
-
-        } else {
-            for (List<FancyText> list : doc) {
-                for (FancyText fancyT : list) {
-                    if (fancyT instanceof FancyMessage) {
-                        FancyMessage text = (FancyMessage) fancyT;
-                        text.setAltColor(altColor);
-                        altColor = !altColor;
-                        sender.sendMessage(text.getFancyText());
-                    } else {
-                        FancyText text = fancyT;
-                        if (appendedPageNum) {
-                            sender.sendMessage(" ");
-                        } else {
-                            appendedPageNum = true;
-                        }
-                        sender.sendMessage(text.getFancyText());
-                        altColor = false;
-                    }
-                }
-            }
-        }
-    }
-
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ListCommand.java

@@ -1,119 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.display.ColorAlternator;
-import com.onarandombox.MultiverseCore.display.ContentDisplay;
-import com.onarandombox.MultiverseCore.display.ContentFilter;
-import com.onarandombox.MultiverseCore.display.DisplayHandlers;
-import com.onarandombox.MultiverseCore.display.settings.PagedDisplaySettings;
-import org.bukkit.ChatColor;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.Collection;
-import java.util.List;
-import java.util.stream.Collectors;
-
-/**
- * Displays a listing of all worlds that a player can enter.
- */
-public class ListCommand extends MultiverseCommand {
-
-    public ListCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("World Listing");
-        this.setCommandUsage("/mv list [filter] [page]");
-        this.setArgRange(0, 2);
-        this.addKey("mvlist");
-        this.addKey("mvl");
-        this.addKey("mv list");
-        this.setPermission("multiverse.core.list.worlds", "Displays a listing of all worlds that you can enter.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        ContentFilter filter = ContentFilter.DEFAULT;
-        int page = 1;
-
-        // Either page or filter.
-        if (args.size() == 1) {
-            try {
-                page = Integer.parseInt(args.get(0));
-            } catch (NumberFormatException ignore) {
-                filter = new ContentFilter(args.get(0));
-            }
-        }
-
-        // Filter then page.
-        if (args.size() == 2) {
-            filter = new ContentFilter(args.get(0));
-            try {
-                page = Integer.parseInt(args.get(1));
-            } catch (NumberFormatException ignore) {
-                sender.sendMessage(ChatColor.RED + args.get(1) + " is not valid number!");
-            }
-        }
-
-        ContentDisplay.forContent(getListContents(sender))
-                .header("%s====[ Multiverse World List ]====", ChatColor.GOLD)
-                .displayHandler(DisplayHandlers.PAGE_LIST)
-                .colorTool(ColorAlternator.with(ChatColor.AQUA, ChatColor.GOLD))
-                .filter(filter)
-                .setting(PagedDisplaySettings.SHOW_PAGE, page)
-                .show(sender);
-    }
-
-    private Collection<String> getListContents(@NotNull CommandSender sender) {
-        Player player = (sender instanceof Player) ? (Player) sender : null;
-
-        List<String> worldList = this.plugin.getMVWorldManager().getMVWorlds().stream()
-                .filter(world -> player == null || plugin.getMVPerms().canEnterWorld(player, world))
-                .filter(world -> canSeeWorld(player, world))
-                .map(world -> hiddenText(world) + world.getColoredWorldString() + " - " + parseColouredEnvironment(world.getEnvironment()))
-                .collect(Collectors.toList());
-
-        this.plugin.getMVWorldManager().getUnloadedWorlds().stream()
-                .filter(world -> plugin.getMVPerms().hasPermission(sender, "multiverse.access." + world, true))
-                .map(world -> ChatColor.GRAY + world + " - UNLOADED")
-                .forEach(worldList::add);
-        
-        return worldList;
-    }
-
-    private boolean canSeeWorld(Player player, MultiverseWorld world) {
-        return !world.isHidden()
-                || player == null
-                || this.plugin.getMVPerms().hasPermission(player, "multiverse.core.modify", true);
-    }
-
-    private String hiddenText(MultiverseWorld world) {
-        return (world.isHidden()) ? String.format("%s[H] ", ChatColor.GRAY) : "";
-    }
-
-    private String parseColouredEnvironment(World.Environment env) {
-        ChatColor color = ChatColor.GOLD;
-        switch (env) {
-            case NETHER:
-                color = ChatColor.RED;
-                break;
-            case NORMAL:
-                color = ChatColor.GREEN;
-                break;
-            case THE_END:
-                color = ChatColor.AQUA;
-                break;
-        }
-        return color + env.toString();
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/LoadCommand.java

@@ -1,42 +1,56 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Loads a world into Multiverse.
- */
+@Service
+@CommandAlias("mv")
 public class LoadCommand extends MultiverseCommand {
 
-    public LoadCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Load World");
-        this.setCommandUsage("/mv load" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvload");
-        this.addKey("mv load");
-        this.addCommandExample("/mv load " + ChatColor.GREEN + "MyUnloadedWorld");
-        this.setPermission("multiverse.core.load", "Loads a world into Multiverse.", PermissionDefault.OP);
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public LoadCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().loadWorld(args.get(0))) {
-            Command.broadcastCommandMessage(sender, "Loaded world '" + args.get(0) + "'!");
-        } else {
-            sender.sendMessage("Error trying to load world '" + args.get(0) + "'!");
+    @Subcommand("load")
+    @CommandPermission("multiverse.core.load")
+    @CommandCompletion("@mvworlds:scope=unloaded")
+    @Syntax("<world>")
+    @Description("{@@mv-core.load.description}")
+    public void onLoadCommand(BukkitCommandIssuer issuer,
+
+                              @Single
+                              @Conditions("validWorldName:scope=unloaded")
+                              @Syntax("<world>")
+                              @Description("{@@mv-core.load.world.description}")
+                              String worldName
+    ) {
+        issuer.sendInfo(MVCorei18n.LOAD_LOADING,
+            "{world}", worldName);
+
+        if (!this.worldManager.loadWorld(worldName)) {
+            issuer.sendError(MVCorei18n.LOAD_FAILED,
+                    "{world}", worldName);
+            return;
         }
+        issuer.sendInfo(MVCorei18n.LOAD_SUCCESS,
+                "{world}", worldName);
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/ModifyAddCommand.java

@@ -1,95 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-// This will contain all the properties that support the ADD/REMOVE
-// Anything not in here will only support the SET action
-
-/**
- * Used to modify various aspects of worlds.
- */
-public class ModifyAddCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyAddCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Add a value)");
-        this.setCommandUsage("/mv modify " + ChatColor.GREEN + "add {VALUE} {PROPERTY}" + ChatColor.GOLD + " [WORLD] ");
-        this.setArgRange(2, 3);
-        this.addKey("mvm add");
-        this.addKey("mvmadd");
-        this.addKey("mv modify add");
-        this.addKey("mvmodify add");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "sheep " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "creeper " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "MyWorld " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.add", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(0);
-        String property = args.get(1);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Add, property)) {
-            sender.sendMessage("Sorry, you can't ADD to " + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: https://goo.gl/OMGwzx");
-            return;
-        }
-
-        // TODO fix this
-        if (world.addToVariable(property, value)) {
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA
-                    + value + ChatColor.WHITE + " was " + ChatColor.GREEN + "added to " + ChatColor.GREEN + property);
-            if (!plugin.saveWorldConfig()) {
-                sender.sendMessage(ChatColor.RED + "There was an issue saving worlds.yml!  Your changes will only be temporary!");
-            }
-        } else {
-            sender.sendMessage(value + " could not be added to " + property);
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ModifyClearCommand.java

@@ -1,92 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Removes all values from a world-property.
- */
-public class ModifyClearCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyClearCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Clear a property)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " clear {PROPERTY}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(1, 2);
-        this.addKey("mvm clear");
-        this.addKey("mvmclear");
-        this.addKey("mv modify clear");
-        this.addKey("mvmodify clear");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.clear",
-                "Removes all values from a property. This will work on properties that contain lists.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-        if (args.size() == 1 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String property = args.get(0);
-
-        if (args.size() == 1) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(1));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Clear, property)) {
-            sender.sendMessage("Sorry, you can't use CLEAR with " + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: https://goo.gl/q1h01S");
-            return;
-        }
-        // TODO fix this
-        if (world.clearList(property)) {
-            sender.sendMessage(property + " was cleared. It contains 0 values now.");
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA + property + ChatColor.WHITE + " was "
-                    + ChatColor.GREEN + "CLEARED" + ChatColor.WHITE + ". It contains " + ChatColor.LIGHT_PURPLE + "0" + ChatColor.WHITE + " values now.");
-            if (!plugin.saveWorldConfig()) {
-                sender.sendMessage(ChatColor.RED + "There was an issue saving worlds.yml!  Your changes will only be temporary!");
-            }
-        } else {
-            sender.sendMessage(ChatColor.RED + "Error: " + ChatColor.GOLD + property
-                    + ChatColor.WHITE + " was " + ChatColor.GOLD + "NOT" + ChatColor.WHITE + " cleared.");
-        }
-    }
-
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ModifyCommand.java

@@ -1,76 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.enums.Action;
-import com.onarandombox.MultiverseCore.enums.AddProperties;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Used to modify various aspects of worlds.
- */
-public class ModifyCommand extends MultiverseCommand {
-
-    public ModifyCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " {set|add|remove|clear} ...");
-        this.setArgRange(2, 3);
-        this.addKey("mvm");
-        this.addKey("mvmodify");
-        this.addKey("mv modify");
-        Map<String, Boolean> children = new HashMap<String, Boolean>();
-        children.put("multiverse.core.modify.add", true);
-        children.put("multiverse.core.modify.modify", true);
-        children.put("multiverse.core.modify.clear", true);
-        children.put("multiverse.core.modify.remove", true);
-        Permission modify = new Permission("multiverse.core.modify",
-                "Modify various aspects of worlds. It requires add/set/clear/remove. See the examples below", PermissionDefault.OP, children);
-        this.addCommandExample(ChatColor.AQUA + "/mv modify set ?");
-        this.addCommandExample(ChatColor.GREEN + "/mv modify add ?");
-        this.addCommandExample(ChatColor.BLUE + "/mv modify clear ?");
-        this.addCommandExample(ChatColor.RED + "/mv modify remove ?");
-        this.setPermission(modify);
-    }
-
-    /**
-     * Validates the specified action.
-     *
-     * @param action The {@link Action}.
-     * @param property The property.
-     * @return Whether this action is valid.
-     */
-    protected static boolean validateAction(Action action, String property) {
-        if (action != Action.Set) {
-            try {
-                AddProperties.valueOf(property);
-                return true;
-            } catch (IllegalArgumentException e) {
-                return false;
-            }
-        }
-        return false;
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // This is just a place holder. The real commands are in:
-        // ModifyAddCommand
-        // ModifyRemoveCommand
-        // ModifySetCommand
-        // ModifyClearCommand
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ModifyRemoveCommand.java

@@ -1,97 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Removes values from a world-property.
- */
-public class ModifyRemoveCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyRemoveCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Remove a value)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " remove {PROPERTY} {VALUE}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(2, 3);
-        this.addKey("mvm remove");
-        this.addKey("mvmremove");
-        this.addKey("mv modify remove");
-        this.addKey("mvmodify remove");
-        this.addKey("mvm delete");
-        this.addKey("mvmdelete");
-        this.addKey("mv modify delete");
-        this.addKey("mvmodify delete");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "sheep " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "creeper " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "MyWorld " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.remove", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(0);
-        String property = args.get(1);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Remove, property)) {
-            sender.sendMessage("Sorry, you can't REMOVE anything from" + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: https://goo.gl/OMGwzx");
-            return;
-        }
-        // TODO fix this
-        if (world.removeFromVariable(property, value)) {
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA + value + ChatColor.WHITE
-                    + " was " + ChatColor.RED + "removed from " + ChatColor.GREEN + property);
-            if (!plugin.saveWorldConfig()) {
-                sender.sendMessage(ChatColor.RED + "There was an issue saving worlds.yml!  Your changes will only be temporary!");
-            }
-        } else {
-            sender.sendMessage(ChatColor.RED + "There was an error removing " + ChatColor.GRAY
-                    + value + ChatColor.WHITE + " from " + ChatColor.GOLD + property);
-        }
-    }
-
-}

src/main/java/com/onarandombox/MultiverseCore/commands/ModifySetCommand.java

@@ -1,125 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.EnglishChatColor;
-import com.onarandombox.MultiverseCore.exceptions.PropertyDoesNotExistException;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Used to set world-properties.
- */
-public class ModifySetCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifySetCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.worldManager = this.plugin.getMVWorldManager();
-        this.setName("Modify a World (Set a value)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " set {PROPERTY} {VALUE}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(1, 3);
-        this.addKey("mvm set");
-        this.addKey("mvmset");
-        this.addKey("mv modify set");
-        this.addKey("mvmodify set");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "mode " + ChatColor.RED + "creative");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "animals " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "monsters " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "alias " + ChatColor.RED + "MyWorld");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "color " + ChatColor.RED + "green");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "curr " + ChatColor.RED + "3");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "price " + ChatColor.RED + "5");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "scale " + ChatColor.RED + "1.2");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "memory " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "diff " + ChatColor.RED + "hard");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "hunger " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "hidden " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "pvp " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "heal " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "adjustspawn " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "spawn");
-        this.setPermission("multiverse.core.modify.set", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Special case for spawn:
-        if (args.size() == 1) {
-            if (!(sender instanceof Player)) {
-                sender.sendMessage("You must be a player to set the" + ChatColor.GREEN + " spawn");
-                return;
-            }
-            if (args.get(0).equalsIgnoreCase("spawn")) {
-                SetSpawnCommand c = new SetSpawnCommand(this.plugin);
-                c.setWorldSpawn(sender);
-
-            } else {
-                sender.sendMessage("Spawn is the only param with no" + ChatColor.GREEN + " VALUE");
-                sender.sendMessage("Type " + ChatColor.GREEN + "/mv modify ?" + ChatColor.WHITE + " For help.");
-            }
-            return;
-        }
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage("From the command line, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(1);
-        String property = args.get(0);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if ((property.equalsIgnoreCase("aliascolor") || property.equalsIgnoreCase("color")) && !EnglishChatColor.isValidAliasColor(value)) {
-            sender.sendMessage(value + " is not a valid color. Please pick one of the following:");
-            sender.sendMessage(EnglishChatColor.getAllColors());
-            return;
-        }
-        try {
-            if (world.setPropertyValue(property, value)) {
-                sender.sendMessage(ChatColor.GREEN + "Success!" + ChatColor.WHITE + " Property " + ChatColor.AQUA + property
-                        + ChatColor.WHITE + " was set to " + ChatColor.GREEN + value);
-                if (!plugin.saveWorldConfig()) {
-                    sender.sendMessage(ChatColor.RED + "There was an issue saving worlds.yml!  Your changes will only be temporary!");
-                }
-            } else {
-                sender.sendMessage(ChatColor.RED + world.getPropertyHelp(property));
-            }
-        } catch (PropertyDoesNotExistException e) {
-            sender.sendMessage(ChatColor.RED + "Sorry, You can't set: '" + ChatColor.GRAY + property + ChatColor.RED + "'");
-            sender.sendMessage("Valid world-properties: " + world.getAllPropertyNames());
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/MultiverseCommand.java

@@ -1,40 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MultiverseMessaging;
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.command.CommandSender;
-
-import java.util.List;
-
-/**
- * A generic Multiverse-command.
- */
-public abstract class MultiverseCommand extends Command {
-
-    /**
-     * The reference to the core.
-     */
-    protected MultiverseCore plugin;
-    /**
-     * The reference to {@link MultiverseMessaging}.
-     */
-    protected MultiverseMessaging messaging;
-
-    public MultiverseCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.plugin = plugin;
-        this.messaging = this.plugin.getMessaging();
-    }
-
-    @Override
-    public abstract void runCommand(CommandSender sender, List<String> args);
-
-}

src/main/java/com/onarandombox/MultiverseCore/commands/PaginatedCommand.java

@@ -1,177 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.java.JavaPlugin;
-
-import java.util.List;
-import java.util.regex.Pattern;
-
-/**
- * A generic paginated command.
- * @param <T> The type of items on the page.
- */
-public abstract class PaginatedCommand<T> extends Command {
-    private final Pattern REGEX_SPECIAL_CHARS = Pattern.compile("[.+*?\\[^\\]$(){}=!<>|:-\\\\]");
-    private static final int DEFAULT_ITEMS_PER_PAGE = 9;
-    /**
-     * The number of items per page.
-     */
-    protected int itemsPerPage = DEFAULT_ITEMS_PER_PAGE;
-
-    public PaginatedCommand(JavaPlugin plugin) {
-        super(plugin);
-    }
-
-    /**
-     * Set the number of items per page.
-     *
-     * @param items The new number of items per page.
-     */
-    protected void setItemsPerPage(int items) {
-        itemsPerPage = items;
-    }
-
-    /**
-     * Gets filtered items.
-     *
-     * @param availableItems All available items.
-     * @param filter The filter-{@link String}.
-     * @return A list of items that match the filter.
-     */
-    protected abstract List<T> getFilteredItems(List<T> availableItems, String filter);
-
-    /**
-     * Escape regex special characters from filter
-     *
-     * @param filter The filter-{@link String}.
-     * @return String with regex characters escaped
-     */
-    protected String cleanFilter(String filter) {
-        return REGEX_SPECIAL_CHARS.matcher(filter).replaceAll("\\\\$0");
-    }
-
-    /**
-     * Constructs a single string from a list of strings.
-     *
-     * @param list The {@link List} of strings.
-     * @return A single {@link String}.
-     */
-    protected String stitchThisString(List<String> list) {
-        StringBuilder builder = new StringBuilder();
-        for (String s : list) {
-            builder.append(s);
-            builder.append(' ');
-        }
-        return builder.toString();
-    }
-
-    /**
-     * Shows a page.
-     *
-     * @param page The number of the page to show.
-     * @param sender The {@link CommandSender} that wants to see the page.
-     * @param cmds The items that should be displayed on the page.
-     */
-    protected void showPage(int page, CommandSender sender, List<T> cmds) {
-        // Ensure the page is at least 1.
-        page = (page <= 0) ? 1 : page;
-        int start = (page - 1) * itemsPerPage;
-        int end = start + itemsPerPage;
-
-        for (int i = start; i < end; i++) {
-            // For consistancy, print some extra lines if it's a player:
-            if (i < cmds.size()) {
-                sender.sendMessage(this.getItemText(cmds.get(i)));
-            } else if (sender instanceof Player) {
-                sender.sendMessage(" ");
-            }
-        }
-    }
-
-    /**
-     * Converts an item into a string.
-     *
-     * @param item The item.
-     * @return A {@link String}.
-     */
-    protected abstract String getItemText(T item);
-
-    /**
-     * Constructs a {@link FilterObject} from a {@link List} of arguments.
-     *
-     * @param args The {@link List} of arguments.
-     * @return The {@link FilterObject}.
-     */
-    protected FilterObject getPageAndFilter(List<String> args) {
-        int page = 1;
-
-        String filter = "";
-
-        if (args.size() == 0) {
-            filter = "";
-            page = 1;
-        } else if (args.size() == 1) {
-            try {
-                page = Integer.parseInt(args.get(0));
-            } catch (NumberFormatException ex) {
-                filter = args.get(0);
-                page = 1;
-            }
-        } else if (args.size() == 2) {
-            filter = args.get(0);
-            try {
-                page = Integer.parseInt(args.get(1));
-            } catch (NumberFormatException ex) {
-                page = 1;
-            }
-        }
-        return new FilterObject(page, filter);
-    }
-
-    /**
-     * "Key-Object" containing information about the page and the filter that were requested.
-     */
-    protected class FilterObject {
-        private Integer page;
-        private String filter;
-
-        public FilterObject(Integer page, String filter) {
-            this.page = page;
-            this.filter = filter;
-        }
-
-        /**
-         * Gets the page.
-         * @return The page.
-         */
-        public Integer getPage() {
-            return this.page;
-        }
-
-        /**
-         * Sets the page.
-         *
-         * @param page The new page.
-         */
-        public void setPage(int page) {
-            this.page = page;
-        }
-
-        /**
-         * Gets the filter.
-         * @return The filter.
-         */
-        public String getFilter() {
-            return this.filter;
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/PaginatedCoreCommand.java

@@ -1,26 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-
-/**
- * A generic paginated Multiverse-command.
- * @param <T> The type of items on the page.
- */
-public abstract class PaginatedCoreCommand<T> extends PaginatedCommand<T> {
-    /**
-     * The reference to the core.
-     */
-    protected MultiverseCore plugin;
-
-    public PaginatedCoreCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.plugin = plugin;
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/PurgeCommand.java

@@ -1,92 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.api.WorldPurger;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * Removes a type of mob from a world.
- */
-public class PurgeCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public PurgeCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Purge World of Creatures");
-        this.setCommandUsage("/mv purge" + ChatColor.GOLD + " [WORLD|all] " + ChatColor.GREEN + "{all|animals|monsters|MOBNAME}");
-        this.setArgRange(1, 2);
-        this.addKey("mvpurge");
-        this.addKey("mv purge");
-        this.addCommandExample("/mv purge " + ChatColor.GREEN + "all");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "all " + ChatColor.GREEN + "all");
-        this.addCommandExample("/mv purge " + ChatColor.GREEN + "monsters");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "all " + ChatColor.GREEN + "animals");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "MyWorld " + ChatColor.GREEN + "squid");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "MyWorld_nether " + ChatColor.GREEN + "ghast");
-        this.setPermission("multiverse.core.purge", "Removed the specified type of mob from the specified world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-        if (args.size() == 1 && p == null) {
-            sender.sendMessage("This command requires a WORLD when being run from the console!");
-            sender.sendMessage(this.getCommandUsage());
-            return;
-        }
-        String worldName = null;
-        String deathName = null;
-        if (args.size() == 1) {
-            worldName = p.getWorld().getName();
-            deathName = args.get(0);
-        } else {
-            worldName = args.get(0);
-            deathName = args.get(1);
-        }
-
-        if (!worldName.equalsIgnoreCase("all") && !this.worldManager.isMVWorld(worldName)) {
-            this.plugin.showNotMVWorldMessage(sender, worldName);
-            sender.sendMessage("It cannot be purged.");
-            return;
-        }
-
-        List<MultiverseWorld> worldsToRemoveEntitiesFrom = new ArrayList<MultiverseWorld>();
-        // Handle all case any user who names a world "all" should know better...
-        if (worldName.equalsIgnoreCase("all")) {
-            worldsToRemoveEntitiesFrom.addAll(this.worldManager.getMVWorlds());
-        } else {
-            worldsToRemoveEntitiesFrom.add(this.worldManager.getMVWorld(worldName));
-        }
-
-        WorldPurger purger = this.worldManager.getTheWorldPurger();
-        ArrayList<String> thingsToKill = new ArrayList<String>();
-        if (deathName.equalsIgnoreCase("all") || deathName.equalsIgnoreCase("animals") || deathName.equalsIgnoreCase("monsters")) {
-            thingsToKill.add(deathName.toUpperCase());
-        } else {
-            Collections.addAll(thingsToKill, deathName.toUpperCase().split(","));
-        }
-        for (MultiverseWorld w : worldsToRemoveEntitiesFrom) {
-            purger.purgeWorld(w, thingsToKill, false, false, sender);
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/RegenCommand.java

@@ -1,69 +1,97 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
+import java.util.Collections;
+import java.util.Random;
+
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.MessageType;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandValueFlag;
+import com.onarandombox.MultiverseCore.commandtools.flags.ParsedCommandFlags;
 import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
 import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Regenerates a world.
- */
+@Service
+@CommandAlias("mv")
 public class RegenCommand extends MultiverseCommand {
 
-    public RegenCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Regenerates a World");
-        this.setCommandUsage("/mv regen" + ChatColor.GREEN + " {WORLD}" + ChatColor.GOLD + " [-s [SEED]] [--keep-gamerules]");
-        this.setArgRange(1, 4);
-        this.addKey("mvregen");
-        this.addKey("mv regen");
-        this.addCommandExample("You can use the -s with no args to get a new seed:");
-        this.addCommandExample("/mv regen " + ChatColor.GREEN + "MyWorld" + ChatColor.GOLD + " -s");
-        this.addCommandExample("or specifiy a seed to get that one:");
-        this.addCommandExample("/mv regen " + ChatColor.GREEN + "MyWorld" + ChatColor.GOLD + " -s" + ChatColor.AQUA + " gargamel");
-        this.setPermission("multiverse.core.regen", "Regenerates a world on your server. The previous state will be lost "
-                + ChatColor.RED + "PERMANENTLY.", PermissionDefault.OP);
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public RegenCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
+
+        registerFlagGroup(CommandFlagGroup.builder("mvregen")
+                .add(CommandValueFlag.builder("--seed", String.class)
+                        .addAlias("-s")
+                        .completion(() -> Collections.singleton(String.valueOf(new Random().nextLong())))
+                        .optional()
+                        .build())
+                .add(CommandFlag.builder("--keep-gamerules")
+                        .addAlias("-k")
+                        .build())
+                .build());
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = args.get(0);
-        boolean useseed = (!(args.size() == 1));
-        boolean randomseed = (args.size() == 2 && args.get(1).equalsIgnoreCase("-s"));
-        String seed = (args.size() == 3) ? args.get(2) : "";
-        boolean keepGamerules = CommandHandler.hasFlag("--keep-gamerules", args);
-        this.plugin.getCommandQueueManager().addToQueue(new QueuedCommand(
-                sender,
-                doWorldRegen(sender, worldName, useseed, randomseed, seed, keepGamerules),
-                String.format("Are you sure you want to regen '%s'? You cannot undo this action.", worldName)
+    @Subcommand("regen")
+    @CommandPermission("multiverse.core.regen")
+    @CommandCompletion("@mvworlds:scope=both @flags:groupName=mvregen")
+    @Syntax("<world> --seed [seed] --keep-gamerules")
+    @Description("{@@mv-core.regen.description}")
+    public void onRegenCommand(BukkitCommandIssuer issuer,
+
+                               @Conditions("validWorldName:scope=both")
+                               @Syntax("<world>")
+                               @Description("{@@mv-core.regen.world.description}")
+                               String worldName,
+
+                               @Optional
+                               @Syntax("--seed [seed] --keep-gamerules")
+                               @Description("{@@mv-core.regen.other.description}")
+                               String[] flags
+    ) {
+        ParsedCommandFlags parsedFlags = parseFlags(flags);
+
+        this.commandManager.getCommandQueueManager().addToQueue(new QueuedCommand(
+                issuer.getIssuer(),
+                () -> {
+                    issuer.sendInfo(MVCorei18n.REGEN_REGENERATING,
+                            "{world}", worldName);
+                    if (!this.worldManager.regenWorld(
+                            worldName,
+                            parsedFlags.hasFlag("--seed"),
+                            !parsedFlags.hasFlagValue("--seed"),
+                            parsedFlags.flagValue("--seed", String.class),
+                            parsedFlags.hasFlag("--keep-gamerules")
+                    )) {
+                        issuer.sendError(MVCorei18n.REGEN_FAILED,
+                                "{world}", worldName);
+                        return;
+                    }
+                    issuer.sendInfo(MVCorei18n.REGEN_SUCCESS,
+                            "{world}", worldName);
+                },
+                this.commandManager.formatMessage(
+                        issuer,
+                        MessageType.INFO,
+                        MVCorei18n.REGEN_PROMPT,
+                        "{world}", worldName)
         ));
     }
-
-    private Runnable doWorldRegen(@NotNull CommandSender sender,
-                                  @NotNull String worldName,
-                                  boolean useSeed,
-                                  boolean randomSeed,
-                                  @NotNull String seed,
-                                  boolean keepGamerules) {
-
-        return () -> {
-            if (this.plugin.getMVWorldManager().regenWorld(worldName, useSeed, randomSeed, seed, keepGamerules)) {
-                sender.sendMessage(ChatColor.GREEN + "World Regenerated!");
-                return;
-            }
-            sender.sendMessage(ChatColor.RED + "World could NOT be regenerated!");
-        };
-    }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/ReloadCommand.java

@@ -1,58 +1,71 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.event.MVConfigReloadEvent;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-
 import java.util.ArrayList;
 import java.util.List;
 
-/**
- * Reloads worlds.yml and config.yml.
- */
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.anchor.AnchorManager;
+import com.onarandombox.MultiverseCore.api.MVCore;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.event.MVConfigReloadEvent;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.bukkit.plugin.PluginManager;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+@CommandAlias("mv")
 public class ReloadCommand extends MultiverseCommand {
 
-    public ReloadCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Reload Configs");
-        this.setCommandUsage("/mv reload");
-        this.setArgRange(0, 0);
-        this.addKey("mvreload");
-        this.addKey("mvr");
-        this.addKey("mv reload");
-        this.addCommandExample("/mv reload");
-        this.setPermission("multiverse.core.reload", "Reloads worlds.yml and config.yml.", PermissionDefault.OP);
+    private final MVCoreConfig config;
+    private final AnchorManager anchorManager;
+    private final MVWorldManager worldManager;
+    private final PluginManager pluginManager;
+
+    @Inject
+    public ReloadCommand(
+            @NotNull MVCommandManager commandManager,
+            @NotNull MVCoreConfig config,
+            @NotNull AnchorManager anchorManager,
+            @NotNull MVWorldManager worldManager,
+            @NotNull PluginManager pluginManager
+    ) {
+        super(commandManager);
+        this.config = config;
+        this.anchorManager = anchorManager;
+        this.worldManager = worldManager;
+        this.pluginManager = pluginManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        sender.sendMessage(ChatColor.GOLD + "Reloading all Multiverse Plugin configs...");
-        this.plugin.loadConfigs();
-        this.plugin.getAnchorManager().loadAnchors();
-        this.plugin.getMVWorldManager().loadWorlds(true);
+    @Subcommand("reload")
+    @CommandPermission("multiverse.core.reload")
+    @Description("{@@mv-core.reload.description}")
+    public void onReloadCommand(@NotNull BukkitCommandIssuer issuer) {
+        issuer.sendInfo(MVCorei18n.RELOAD_RELOADING);
+        this.config.load();
+        this.worldManager.loadWorldsConfig();
+        this.worldManager.loadWorlds(true);
+        this.anchorManager.loadAnchors();
 
-        List<String> configsLoaded = new ArrayList<String>();
+        List<String> configsLoaded = new ArrayList<>();
         configsLoaded.add("Multiverse-Core - config.yml");
         configsLoaded.add("Multiverse-Core - worlds.yml");
         configsLoaded.add("Multiverse-Core - anchors.yml");
-        // Create the event
+
         MVConfigReloadEvent configReload = new MVConfigReloadEvent(configsLoaded);
-        // Fire it off
-        this.plugin.getServer().getPluginManager().callEvent(configReload);
-        for (String s : configReload.getAllConfigsLoaded()) {
-            sender.sendMessage(s);
-        }
+        this.pluginManager.callEvent(configReload);
 
-        sender.sendMessage(ChatColor.GREEN + "Reload Complete!");
+        // @TODO: replace this sendMessage and format the configsLoaded above, maybe?
+        configReload.getAllConfigsLoaded().forEach(issuer::sendMessage);
+        issuer.sendInfo(MVCorei18n.RELOAD_SUCCESS);
     }
-
 }

src/main/java/com/onarandombox/MultiverseCore/commands/RemoveCommand.java

@@ -1,42 +1,52 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Unloads a world and removes it from the config.
- */
+@Service
+@CommandAlias("mv")
 public class RemoveCommand extends MultiverseCommand {
 
-    public RemoveCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Remove World");
-        this.setCommandUsage("/mv remove" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvremove");
-        this.addKey("mv remove");
-        this.addCommandExample("/mv remove " + ChatColor.GREEN + "MyWorld");
-        this.setPermission("multiverse.core.remove",
-                "Unloads a world from Multiverse and removes it from worlds.yml, this does NOT DELETE the world folder.", PermissionDefault.OP);
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public RemoveCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().removeWorldFromConfig(args.get(0))) {
-            sender.sendMessage("World removed from config!");
-        } else {
-            sender.sendMessage("Error trying to remove world from config!");
+    @Subcommand("remove")
+    @CommandPermission("multiverse.core.remove")
+    @CommandCompletion("@mvworlds:scope=both")
+    @Syntax("<world>")
+    @Description("{@@mv-core.remove.description}")
+    public void onRemoveCommand(BukkitCommandIssuer issuer,
+
+                                @Single
+                                @Conditions("mvworlds:scope=both")
+                                @Syntax("<world>")
+                                @Description("{@@mv-core.remove.world.description}")
+                                String worldName
+    ) {
+        if (!this.worldManager.removeWorldFromConfig(worldName)) {
+            issuer.sendError(MVCorei18n.REMOVE_FAILED);
+            return;
         }
+        issuer.sendInfo(MVCorei18n.REMOVE_SUCCESS,
+                "{world}", worldName);
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/RootCommand.java

@@ -0,0 +1,34 @@
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginDescriptionFile;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+public class RootCommand extends MultiverseCommand {
+
+    private final Plugin plugin;
+
+    @Inject
+    public RootCommand(@NotNull MVCommandManager commandManager, @NotNull MultiverseCore plugin) {
+        super(commandManager);
+        this.plugin = plugin;
+    }
+
+    @CommandAlias("mv")
+    public void onRootCommand(CommandIssuer issuer) {
+        PluginDescriptionFile description = this.plugin.getDescription();
+        issuer.sendInfo(MVCorei18n.ROOT_TITLE,
+                "{name}", description.getName(),
+                "{version}", description.getVersion());
+        issuer.sendInfo(MVCorei18n.ROOT_HELP);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commands/ScriptCommand.java

@@ -1,58 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.io.File;
-import java.util.List;
-
-/**
- * States who is in what world.
- */
-public class ScriptCommand extends MultiverseCommand {
-
-    public ScriptCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Runs a script.");
-        this.setCommandUsage("/mv script" + ChatColor.GOLD + " {script} [target]");
-        this.setArgRange(1, 2);
-        this.addKey("mv script");
-        this.addKey("mvscript");
-        this.addCommandExample(String.format("/mv script %sscript.txt", ChatColor.GOLD));
-        this.addCommandExample(String.format("/mv script %stest.txt %ssomeplayer", ChatColor.GOLD, ChatColor.GREEN));
-        this.setPermission("multiverse.core.script", "Runs a script.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (plugin.getScriptAPI() == null) {
-            sender.sendMessage("Buscript failed to load while the server was starting. Scripts cannot be run.");
-            return;
-        }
-        File file = new File(plugin.getScriptAPI().getScriptFolder(), args.get(0));
-        if (!file.exists()) {
-            sender.sendMessage("That script file does not exist in the Multiverse-Core scripts directory!");
-            return;
-        }
-        Player player = null;
-        if (sender instanceof Player) {
-            player = (Player) sender;
-        }
-        String target = null;
-        if (args.size() == 2) {
-            target = args.get(1);
-        }
-        plugin.getScriptAPI().executeScript(file, target, player);
-        sender.sendMessage(String.format("Script '%s%s%s' finished!", ChatColor.GOLD, file.getName(), ChatColor.WHITE));
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/SetSpawnCommand.java

@@ -1,148 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.BlockSafety;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import org.bukkit.ChatColor;
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-import org.bukkit.Bukkit;
-
-/**
- * Sets the spawn for a world.
- */
-public class SetSpawnCommand extends MultiverseCommand {
-    public SetSpawnCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Set World Spawn");
-        this.setCommandUsage("/mv setspawn");
-        this.setArgRange(0, 6);
-        this.addKey("mvsetspawn");
-        this.addKey("mvsets");
-        this.addKey("mvss");
-        this.addKey("mv set spawn");
-        this.addKey("mv setspawn");
-        this.addKey("mvset spawn");
-        this.addCommandExample("/mv set spawn");
-        this.setPermission("multiverse.core.spawn.set", "Sets the spawn for the current world.", PermissionDefault.OP);
-    }
-
-    /**
-     * Dispatches the user's command depending on the number of parameters
-     * @param sender The player who executes the command, may be console as well.
-     * @param args Command line parameters
-     */
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.isEmpty()) {
-            setWorldSpawn(sender);
-        } else if (args.size() == 4) {
-            setWorldSpawn(sender, args.get(0), args.get(1), args.get(2), args.get(3));
-        } else if (args.size() == 6) {
-            setWorldSpawn(sender, args.get(0), args.get(1), args.get(2), args.get(3), args.get(4), args.get(5));
-        } else {
-            sender.sendMessage("Use no arguments for your current location, or world/x/y/z, or world/x/y/z/yaw/pitch!");
-        }
-    }
-
-    /**
-     * Set the world spawn when no parameters are given
-     * @param sender The {@link CommandSender} who executes the command. 
-     *               Everything not a {@link Player}, e.g. console, gets rejected, as we can't get coordinates from there.
-     */
-    protected void setWorldSpawn(CommandSender sender) {
-        if (sender instanceof Player) {
-            Player p = (Player) sender;
-            Location l = p.getLocation();
-            World w = p.getWorld();
-            setWorldSpawn(sender, w, l);
-        } else {
-            sender.sendMessage("You need to give coordinates to use this command from the console!");
-        }
-    }
-    
-    /**
-     * Set the world spawn when 4 parameters are given
-     * @param sender The {@link CommandSender} who executes the command
-     * @param world The world to set the spawn in
-     * @param x X-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     * @param y Y-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     * @param z Z-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     */
-    protected void setWorldSpawn(CommandSender sender, String world, String x, String y, String z) {
-        setWorldSpawn(sender, world, x, y, z, "0", "0");
-    }
-
-    /**
-     * Set the world spawn when 6 parameters are given
-     * @param sender The {@link CommandSender} who executes the command
-     * @param world The world to set the spawn in
-     * @param x X-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     * @param y Y-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     * @param z Z-coordinate to set the spawn to (as a {@link String} as it's from the command line, gets parsed into a double)
-     * @param yaw Yaw a newly spawned player should look at (as a {@link String} as it's from the command line, gets parsed into a float)
-     * @param pitch Pitch a newly spawned player should look at (as a {@link String} as it's from the command line, gets parsed into a float)
-     */
-    protected void setWorldSpawn(CommandSender sender, String world, String x, String y, String z, String yaw, String pitch) {
-        double dx, dy, dz;
-        float fpitch, fyaw;
-        World bukkitWorld = Bukkit.getWorld(world);
-        if (bukkitWorld == null) {
-            sender.sendMessage("World " + world + " is unknown!");
-            return;
-        }
-        try {
-            dx = Double.parseDouble(x);
-            dy = Double.parseDouble(y);
-            dz = Double.parseDouble(z);
-            fpitch = Float.parseFloat(pitch);
-            fyaw = Float.parseFloat(yaw);
-        } catch (NumberFormatException ex) {
-            sender.sendMessage("All coordinates must be numeric");
-            return;
-        }
-        Location l = new Location(bukkitWorld, dx, dy, dz, fyaw, fpitch);
-        setWorldSpawn(sender, bukkitWorld, l);
-    }
-
-    /**
-     * Does the actual spawn-setting-work.
-     *
-     * @param sender The {@link CommandSender} that's setting the spawn.
-     * @param w The {@link World} to set the spawn in
-     * @param l The {@link Location} to set the spawn to
-     */
-    private void setWorldSpawn(CommandSender sender, World w, Location l) {
-        MultiverseWorld foundWorld = this.plugin.getMVWorldManager().getMVWorld(w.getName());
-        if (foundWorld != null) {
-            foundWorld.setSpawnLocation(l);
-            BlockSafety bs = this.plugin.getBlockSafety();
-            if (!bs.playerCanSpawnHereSafely(l) && foundWorld.getAdjustSpawn()) {
-                sender.sendMessage("It looks like that location would normally be unsafe. But I trust you.");
-                sender.sendMessage("I'm turning off the Safe-T-Teleporter for spawns to this world.");
-                sender.sendMessage("If you want this turned back on just do:");
-                sender.sendMessage(ChatColor.AQUA + "/mvm set adjustspawn true " + foundWorld.getAlias());
-                foundWorld.setAdjustSpawn(false);
-            }
-            sender.sendMessage("Spawn was set to: " + plugin.getLocationManipulation().strCoords(l));
-            if (!plugin.saveWorldConfig()) {
-                sender.sendMessage(ChatColor.RED + "There was an issue saving worlds.yml!  Your changes will only be temporary!");
-            }
-        } else {
-            w.setSpawnLocation(l.getBlockX(), l.getBlockY(), l.getBlockZ());
-            sender.sendMessage("Multiverse does not know about this world, only X,Y and Z set. Please import it to set the spawn fully (Pitch/Yaws).");
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/SilentCommand.java

@@ -1,52 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Enables debug-information.
- */
-public class SilentCommand extends MultiverseCommand {
-
-    public SilentCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Turn silent mode on/off?");
-        this.setCommandUsage("/mv silent" + ChatColor.GOLD + " [true|false|on|off]");
-        this.setArgRange(0, 1);
-        this.addKey("mv silent");
-        this.addKey("mvsilent");
-        this.addCommandExample("/mv silent " + ChatColor.GOLD + "true");
-        this.setPermission("multiverse.core.silent", "Reduces the amount of startup messages.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() == 1) {
-            if (args.get(0).equalsIgnoreCase("on")) {
-                args.set(0, "true");
-            }
-            plugin.getMVConfig().setSilentStart(Boolean.valueOf(args.get(0)));
-            plugin.saveMVConfigs();
-        }
-        this.displaySilentMode(sender);
-    }
-
-    private void displaySilentMode(CommandSender sender) {
-        if (plugin.getMVConfig().getSilentStart()) {
-            sender.sendMessage("Multiverse Silent Start mode is " + ChatColor.GREEN + "ON");
-        } else {
-            sender.sendMessage("Multiverse Silent Start mode is " + ChatColor.RED + "OFF");
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/SleepCommand.java

@@ -1,42 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Takes the player to the latest bed he's slept in.
- */
-public class SleepCommand extends MultiverseCommand {
-
-    public SleepCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Go to Sleep");
-        this.setCommandUsage("/mv sleep");
-        this.setArgRange(0, 0);
-        this.addKey("mv sleep");
-        this.setPermission("multiverse.core.sleep", "Takes you the latest bed you've slept in (Currently BROKEN).", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (p == null) {
-            return;
-        }
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/SpawnCommand.java

@@ -1,91 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.PlayerFinder;
-import org.bukkit.ChatColor;
-import org.bukkit.Location;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Teleports a player to the spawn.
- */
-public class SpawnCommand extends MultiverseCommand {
-
-    public SpawnCommand(MultiverseCore plugin) {
-        super(plugin);
-        Permission otherPerm = new Permission("multiverse.core.spawn.other",
-                "Teleports another player to the spawn of the world they are in.", PermissionDefault.OP);
-        this.setName("Spawn");
-        this.setCommandUsage("/mv spawn" + ChatColor.GOLD + " [PLAYER]");
-        this.setArgRange(0, 1);
-        this.addKey("mvspawn");
-        this.addKey("mv spawn");
-        this.addKey("mvs");
-        this.setPermission("multiverse.core.spawn.self", "Teleports you to the Spawn Point of the world you are in.", PermissionDefault.OP);
-        this.addAdditonalPermission(otherPerm);
-
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player player = null;
-        if (sender instanceof Player) {
-            player = (Player) sender;
-        }
-        // If a persons name was passed in, you must be A. the console, or B have permissions
-        if (args.size() == 1) {
-            if (player != null && !this.plugin.getMVPerms().hasPermission(player, "multiverse.core.spawn.other", true)) {
-                sender.sendMessage("You don't have permission to teleport another player to spawn. (multiverse.core.spawn.other)");
-                return;
-            }
-            Player target = PlayerFinder.get(args.get(0), sender);
-            if (target != null) {
-                target.sendMessage("Teleporting to this world's spawn...");
-                spawnAccurately(target);
-
-                if (player != null) {
-                    target.sendMessage("You were teleported by: " + ChatColor.YELLOW + player.getName());
-                } else {
-                    target.sendMessage("You were teleported by: " + ChatColor.LIGHT_PURPLE + "the console");
-                }
-            } else {
-                sender.sendMessage(args.get(0) + " is not logged on right now!");
-            }
-        } else {
-            if (player != null && !this.plugin.getMVPerms().hasPermission(player, "multiverse.core.spawn.self", true)) {
-                sender.sendMessage("You don't have permission to teleport yourself to spawn. (multiverse.core.spawn.self)");
-                return;
-            }
-            if (player != null) {
-                player.sendMessage("Teleporting to this world's spawn...");
-                spawnAccurately(player);
-            } else {
-                sender.sendMessage("From the console, you must provide a PLAYER.");
-            }
-        }
-    }
-
-    private void spawnAccurately(Player player) {
-        MultiverseWorld world = this.plugin.getMVWorldManager().getMVWorld(player.getWorld().getName());
-        Location spawnLocation;
-        if (world != null) {
-            spawnLocation = world.getSpawnLocation();
-        } else {
-            spawnLocation = player.getWorld().getSpawnLocation();
-        }
-        this.plugin.getSafeTTeleporter().safelyTeleport(player, player, spawnLocation, false);
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/TeleportCommand.java

@@ -1,199 +1,69 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.dumptruckman.minecraft.util.Logging;
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.Teleporter;
-import com.onarandombox.MultiverseCore.api.MVDestination;
-import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
-import com.onarandombox.MultiverseCore.destination.CustomTeleporterDestination;
-import com.onarandombox.MultiverseCore.destination.DestinationFactory;
-import com.onarandombox.MultiverseCore.destination.InvalidDestination;
-import com.onarandombox.MultiverseCore.destination.WorldDestination;
-import com.onarandombox.MultiverseCore.enums.TeleportResult;
-import com.onarandombox.MultiverseCore.event.MVTeleportEvent;
-import com.onarandombox.MultiverseCore.api.SafeTTeleporter;
-import com.onarandombox.MultiverseCore.utils.PlayerFinder;
-import org.bukkit.ChatColor;
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
+import java.util.Arrays;
+import java.util.concurrent.CompletableFuture;
+
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.destination.DestinationsProvider;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Used to teleport players.
- */
+@Service
+@CommandAlias("mv")
 public class TeleportCommand extends MultiverseCommand {
-    private SafeTTeleporter playerTeleporter;
 
-    public TeleportCommand(MultiverseCore plugin) {
-        super(plugin);
-        Permission menu = new Permission("multiverse.teleport.*", "Allows you to display the teleport menu.", PermissionDefault.OP);
+    private final DestinationsProvider destinationsProvider;
 
-        this.setName("Teleport");
-        this.setCommandUsage("/mv tp " + ChatColor.GOLD + "[PLAYER]" + ChatColor.GREEN + " {DESTINATION}");
-        this.setArgRange(1, 2);
-        this.addKey("mvtp");
-        this.addKey("mv tp");
-        this.playerTeleporter = this.plugin.getSafeTTeleporter();
-        this.setPermission(menu);
+    @Inject
+    public TeleportCommand(MVCommandManager commandManager, DestinationsProvider destinationsProvider) {
+        super(commandManager);
+        this.destinationsProvider = destinationsProvider;
     }
 
-    private static final int UNSAFE_TELEPORT_EXPIRE_DELAY = 15;
+    @Subcommand("teleport|tp")
+    @CommandCompletion("@players|@mvworlds:playerOnly|@destinations:playerOnly @mvworlds|@destinations")
+    @Syntax("[player] <destination>")
+    @Description("{@@mv-core.teleport.description}")
+    public void onTeleportCommand(BukkitCommandIssuer issuer,
+
+                                  @Flags("resolve=issuerAware")
+                                  @Syntax("[player]")
+                                  @Description("{@@mv-core.teleport.player.description}")
+                                  Player[] players,
+
+                                  @Syntax("<destination>")
+                                  @Description("{@@mv-core.teleport.destination.description}")
+                                  ParsedDestination<?> destination
+    ) {
+        // TODO Add warning if teleporting too many players at once.
+
+        CompletableFuture.allOf(Arrays.stream(players)
+                        .map(player -> this.destinationsProvider.playerTeleportAsync(issuer, player, destination))
+                        .toArray(CompletableFuture[]::new))
+                .thenRun(() -> {
+                    String playerName = players.length == 1
+                            ? issuer.getPlayer() == players[0] ? "you" : players[0].getName()
+                            : players.length + " players";
+
+                    issuer.sendInfo(MVCorei18n.TELEPORT_SUCCESS,
+                            "{player}", playerName, "{destination}", destination.toString());
+                });
+    }
 
     @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        CommandSender teleporter = sender;
-        Player teleportee = null;
-
-        String destinationName;
-
-        if (args.size() == 2) {
-            teleportee = PlayerFinder.get(args.get(0), sender);
-            if (teleportee == null) {
-                this.messaging.sendMessage(sender, String.format("Sorry, I couldn't find player: %s%s",
-                        ChatColor.GOLD, args.get(0)), false);
-                return;
-            }
-            destinationName = args.get(1);
-
-        } else {
-            destinationName = args.get(0);
-            if (!(sender instanceof Player)) {
-                this.messaging.sendMessage(sender, String.format("From the console, you must specify a player to teleport"), false);
-                return;
-            }
-            teleportee = (Player) sender;
-        }
-
-        DestinationFactory df = this.plugin.getDestFactory();
-        MVDestination d = df.getPlayerAwareDestination(teleportee, destinationName);
-
-        MVTeleportEvent teleportEvent = new MVTeleportEvent(d, teleportee, teleporter, true);
-        this.plugin.getServer().getPluginManager().callEvent(teleportEvent);
-        if (teleportEvent.isCancelled()) {
-            Logging.fine("Someone else cancelled the MVTeleport Event!!!");
-            return;
-        }
-
-        if (d != null && d instanceof InvalidDestination) {
-            this.messaging.sendMessage(sender, String.format("Multiverse does not know how to take you to %s%s",
-                    ChatColor.RED, destinationName), false);
-            return;
-        }
-
-        if (!this.checkSendPermissions(teleporter, teleportee, d)) {
-            return;
-        }
-
-        if (plugin.getMVConfig().getEnforceAccess() && teleporter != null && !this.plugin.getMVPerms().canEnterDestination(teleporter, d)) {
-            if (teleportee.equals(teleporter)) {
-                teleporter.sendMessage("Doesn't look like you're allowed to go " + ChatColor.RED + "there...");
-            } else {
-                teleporter.sendMessage("Doesn't look like you're allowed to send " + ChatColor.GOLD
-                        + teleportee.getName() + ChatColor.WHITE + " to " + ChatColor.RED + "there...");
-            }
-            return;
-        } else if (teleporter != null && !this.plugin.getMVPerms().canTravelFromLocation(teleporter, d.getLocation(teleportee))) {
-            if (teleportee.equals(teleporter)) {
-                this.messaging.sendMessage(teleporter, String.format("DOH! Doesn't look like you can get to %s%s %sfrom where you are...",
-                        ChatColor.GREEN, d.toString(), ChatColor.WHITE), false);
-            } else {
-                this.messaging.sendMessage(teleporter, String.format("DOH! Doesn't look like %s%s %scan get to %sTHERE from where they are...",
-                        ChatColor.GREEN, ((Player) teleporter).getWorld().getName(), ChatColor.WHITE, ChatColor.RED), false);
-            }
-            return;
-        }
-
-        // Special check to verify if players are tryint to teleport to the same
-        // WORLDDestination as the world they're in, that they ALSO have multiverse.core.spawn.self
-
-        if (d instanceof WorldDestination) {
-            World w = d.getLocation(teleportee).getWorld();
-            if (teleportee.getWorld().equals(w)) {
-                if (teleporter.equals(teleportee)) {
-                    if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.self", true)) {
-                        this.messaging.sendMessages(teleporter, new String[]{
-                                String.format("Sorry you don't have permission to go to the world spawn!"),
-                                String.format("%s  (multiverse.core.spawn.self)",
-                                        ChatColor.RED) }, false);
-                        return;
-                    }
-                } else {
-                    if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.other", true)) {
-                        this.messaging.sendMessages(teleporter, new String[]{
-                                String.format("Sorry you don't have permission to send %s to the world spawn!",
-                                        teleportee.getDisplayName()),
-                                String.format("%s  (multiverse.core.spawn.other)",
-                                        ChatColor.RED) }, false);
-                        return;
-                    }
-                }
-            }
-        }
-
-        if (d.getLocation(teleportee) == null) {
-            this.messaging.sendMessage(teleporter, "Sorry Boss, I tried everything, but just couldn't teleport ya there!", false);
-            return;
-        }
-        Teleporter teleportObject = (d instanceof CustomTeleporterDestination) ?
-                ((CustomTeleporterDestination)d).getTeleporter() : this.playerTeleporter;
-        TeleportResult result = teleportObject.teleport(teleporter, teleportee, d);
-        if (result == TeleportResult.FAIL_UNSAFE) {
-            Logging.fine("Could not teleport " + teleportee.getName()
-                    + " to " + plugin.getLocationManipulation().strCoordsRaw(d.getLocation(teleportee)));
-
-            String player = "you";
-            if (!teleportee.equals(teleporter)) {
-                player = teleportee.getName();
-            }
-
-            this.plugin.getCommandQueueManager().addToQueue(new QueuedCommand(
-                    sender,
-                    doUnsafeTeleport(teleporter, teleportee, d.getLocation(teleportee)),
-                    String.format("%sMultiverse %sdid not teleport %s%s %sto %s%s %sbecause it was unsafe. Would you like to try anyway?",
-                            ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, player, ChatColor.WHITE, ChatColor.DARK_AQUA, d.getName(), ChatColor.WHITE),
-                    UNSAFE_TELEPORT_EXPIRE_DELAY
-            ));
-        }
-        // else: Player was teleported successfully (or the tp event was fired I should say)
-    }
-
-    private Runnable doUnsafeTeleport(CommandSender teleporter, Player player, Location location) {
-        return () -> this.plugin.getSafeTTeleporter().safelyTeleport(teleporter, player, location, false);
-    }
-
-    private boolean checkSendPermissions(CommandSender teleporter, Player teleportee, MVDestination destination) {
-        if (teleporter.equals(teleportee)) {
-            if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.teleport.self." + destination.getIdentifier(), true)) {
-                this.messaging.sendMessages(teleporter, new String[]{
-                        String.format("%sYou don't have permission to teleport %syourself %sto a %s%s %sDestination",
-                                ChatColor.WHITE, ChatColor.AQUA, ChatColor.WHITE, ChatColor.RED, destination.getType(), ChatColor.WHITE),
-                        String.format("%s   (multiverse.teleport.self.%s)",
-                                ChatColor.RED, destination.getIdentifier()) }, false);
-                return false;
-            }
-        } else {
-            if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.teleport.other." + destination.getIdentifier(), true)) {
-                this.messaging.sendMessages(teleporter, new String[]{
-                        String.format("You don't have permission to teleport another player to a %s%s Destination.",
-                                ChatColor.GREEN, destination.getType()),
-                        String.format("%s(multiverse.teleport.other.%s)",
-                                ChatColor.RED, destination.getIdentifier()) }, false);
-                return false;
-            }
-        }
-        return true;
+    public boolean hasPermission(CommandIssuer issuer) {
+        return this.destinationsProvider.hasAnyTeleportPermission(issuer);
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/UnloadCommand.java

@@ -1,42 +1,54 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
 package com.onarandombox.MultiverseCore.commands;
 
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.api.MVWorld;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import com.onarandombox.MultiverseCore.utils.MVCorei18n;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
 
-import java.util.List;
-
-/**
- * Unloads worlds from Multiverse.
- */
+@Service
+@CommandAlias("mv")
 public class UnloadCommand extends MultiverseCommand {
 
-    public UnloadCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Unload World");
-        this.setCommandUsage("/mv unload" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvunload");
-        this.addKey("mv unload");
-        this.setPermission("multiverse.core.unload",
-                "Unloads a world from Multiverse. This does NOT remove the world folder. This does NOT remove it from the config file.", PermissionDefault.OP);
+    private final MVWorldManager worldManager;
+
+    @Inject
+    public UnloadCommand(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        super(commandManager);
+        this.worldManager = worldManager;
     }
 
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().unloadWorld(args.get(0))) {
-            Command.broadcastCommandMessage(sender, "Unloaded world '" + args.get(0) + "'!");
-        } else {
-            sender.sendMessage("Error trying to unload world '" + args.get(0) + "'!");
+    @Subcommand("unload")
+    @CommandPermission("multiverse.core.unload")
+    @CommandCompletion("@mvworlds")
+    @Syntax("<world>")
+    @Description("{@@mv-core.unload.description}")
+    public void onUnloadCommand(BukkitCommandIssuer issuer,
+
+                                @Syntax("<world>")
+                                @Description("{@@mv-core.unload.world.description}")
+                                MVWorld world
+    ) {
+        issuer.sendInfo(MVCorei18n.UNLOAD_UNLOADING,
+                "{world}", world.getColoredWorldString());
+
+        //TODO API: Should be able to use MVWorld object directly
+        if (!this.worldManager.unloadWorld(world.getName())) {
+            issuer.sendError(MVCorei18n.UNLOAD_FAILURE,
+                    "{world}", world.getColoredWorldString());
+            return;
         }
+        issuer.sendInfo(MVCorei18n.UNLOAD_SUCCESS,
+                "{world}", world.getColoredWorldString());
     }
 }

src/main/java/com/onarandombox/MultiverseCore/commands/UsageCommand.java

@@ -0,0 +1,39 @@
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.CommandHelp;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.HelpCommand;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;
+import jakarta.inject.Inject;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+@CommandAlias("mv")
+public class UsageCommand extends MultiverseCommand {
+
+    @Inject
+    public UsageCommand(@NotNull MVCommandManager commandManager) {
+        super(commandManager);
+    }
+
+    @HelpCommand
+    @Subcommand("help")
+    @CommandPermission("multiverse.core.help")
+    @CommandCompletion("@commands:mv")
+    @Syntax("[filter] [page]")
+    @Description("{@@mv-core.usage.description}")
+    public void onUsageCommand(CommandHelp help) {
+        if (help.getIssuer().isPlayer()) {
+            // Prevent flooding the chat
+            help.setPerPage(4);
+        }
+        this.commandManager.showUsage(help);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commands/VersionCommand.java

@@ -1,225 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.dumptruckman.minecraft.util.Logging;
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.event.MVVersionEvent;
-import com.onarandombox.MultiverseCore.utils.webpaste.PasteFailedException;
-import com.onarandombox.MultiverseCore.utils.webpaste.PasteService;
-import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceFactory;
-import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceType;
-import com.onarandombox.MultiverseCore.utils.webpaste.URLShortener;
-import com.onarandombox.MultiverseCore.utils.webpaste.URLShortenerFactory;
-import com.onarandombox.MultiverseCore.utils.webpaste.URLShortenerType;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.apache.commons.lang.StringUtils;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.command.ConsoleCommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-import org.bukkit.scheduler.BukkitRunnable;
-
-import java.io.File;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Dumps version info to the console.
- */
-public class VersionCommand extends MultiverseCommand {
-    private static final URLShortener SHORTENER = URLShortenerFactory.getService(URLShortenerType.BITLY);
-
-    public VersionCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Multiverse Version");
-        this.setCommandUsage("/mv version " + ChatColor.GOLD + "[-b|-h|-p] [--include-plugin-list]");
-        this.setArgRange(0, 2);
-        this.addKey("mv version");
-        this.addKey("mvver");
-        this.addKey("mvv");
-        this.addKey("mvversion");
-        this.setPermission(
-                "multiverse.core.version",
-                "Dumps version info to the console, optionally to pastebin.com with -b, to hastebin.com using -h, or to paste.gg with -p.",
-                PermissionDefault.OP)
-        ;
-    }
-
-    private String getLegacyString() {
-        return "[Multiverse-Core] Multiverse-Core Version: " + this.plugin.getDescription().getVersion() + '\n'
-                + "[Multiverse-Core] Bukkit Version: " + this.plugin.getServer().getVersion() + '\n'
-                + "[Multiverse-Core] Loaded Worlds: " + this.plugin.getMVWorldManager().getMVWorlds() + '\n'
-                + "[Multiverse-Core] Multiverse Plugins Loaded: " + this.plugin.getPluginCount() + '\n'
-                +"[Multiverse-Core] Economy being used: " + plugin.getEconomist().getEconomyName() + '\n'
-                + "[Multiverse-Core] Permissions Plugin: " + this.plugin.getMVPerms().getType() + '\n'
-                + "[Multiverse-Core] Dumping Config Values: (version " + this.plugin.getMVConfig().getVersion() + ")" + '\n'
-                + "[Multiverse-Core]   enforceaccess: " + plugin.getMVConfig().getEnforceAccess() + '\n'
-                + "[Multiverse-Core]   prefixchat: " + plugin.getMVConfig().getPrefixChat() + '\n'
-                + "[Multiverse-Core]   prefixchatformat: " + plugin.getMVConfig().getPrefixChatFormat() + '\n'
-                + "[Multiverse-Core]   useasyncchat: " + plugin.getMVConfig().getUseAsyncChat() + '\n'
-                + "[Multiverse-Core]   teleportintercept: " + plugin.getMVConfig().getTeleportIntercept() + '\n'
-                + "[Multiverse-Core]   firstspawnoverride: " + plugin.getMVConfig().getFirstSpawnOverride() + '\n'
-                + "[Multiverse-Core]   displaypermerrors: " + plugin.getMVConfig().getDisplayPermErrors() + '\n'
-                + "[Multiverse-Core]   enablebuscript: " + plugin.getMVConfig().getEnableBuscript() + '\n'
-                + "[Multiverse-Core]   globaldebug: " + plugin.getMVConfig().getGlobalDebug() + '\n'
-                + "[Multiverse-Core]   silentstart: " + plugin.getMVConfig().getSilentStart() + '\n'
-                + "[Multiverse-Core]   messagecooldown: " + plugin.getMessaging().getCooldown() + '\n'
-                + "[Multiverse-Core]   version: " + plugin.getMVConfig().getVersion() + '\n'
-                + "[Multiverse-Core]   firstspawnworld: " + plugin.getMVConfig().getFirstSpawnWorld() + '\n'
-                + "[Multiverse-Core]   teleportcooldown: " + plugin.getMVConfig().getTeleportCooldown() + '\n'
-                + "[Multiverse-Core]   defaultportalsearch: " + plugin.getMVConfig().isUsingDefaultPortalSearch() + '\n'
-                + "[Multiverse-Core]   portalsearchradius: " + plugin.getMVConfig().getPortalSearchRadius() + '\n'
-                + "[Multiverse-Core]   autopurge: " + plugin.getMVConfig().isAutoPurgeEnabled() + '\n'
-                + "[Multiverse-Core] Special Code: FRN002" + '\n';
-    }
-
-    private String getMarkdownString() {
-        return "# Multiverse-Core" + '\n'
-                + "## Overview" + '\n'
-                + "| Name | Value |" + '\n'
-                + "| --- | --- |" + '\n'
-                + "| Multiverse-Core Version | `" + this.plugin.getDescription().getVersion() + "` |" + '\n'
-                + "| Bukkit Version | `" + this.plugin.getServer().getVersion() + "` |" + '\n'
-                + "| Loaded Worlds | `" + this.plugin.getMVWorldManager().getMVWorlds() + "` |" + '\n'
-                + "| Multiverse Plugins Loaded | `" + this.plugin.getPluginCount() + "` |" + '\n'
-                + "| Economy being used | `" + plugin.getEconomist().getEconomyName() + "` |" + '\n'
-                + "| Permissions Plugin | `" + this.plugin.getMVPerms().getType() + "` |" + '\n'
-                + "## Parsed Config" + '\n'
-                + "These are what Multiverse thought the in-memory values of the config were." + "\n\n"
-                + "| Config Key  | Value |" + '\n'
-                + "| --- | --- |" + '\n'
-                + "| version | `" + this.plugin.getMVConfig().getVersion() + "` |" + '\n'
-                + "| messagecooldown | `" + plugin.getMessaging().getCooldown() + "` |" + '\n'
-                + "| teleportcooldown | `" + plugin.getMVConfig().getTeleportCooldown() + "` |" + '\n'
-                + "| worldnameprefix | `" + plugin.getMVConfig().getPrefixChat() + "` |" + '\n'
-                + "| worldnameprefixFormat | `" + plugin.getMVConfig().getPrefixChatFormat() + "` |" + '\n'
-                + "| enforceaccess | `" + plugin.getMVConfig().getEnforceAccess() + "` |" + '\n'
-                + "| displaypermerrors | `" + plugin.getMVConfig().getDisplayPermErrors() + "` |" + '\n'
-                + "| teleportintercept | `" + plugin.getMVConfig().getTeleportIntercept() + "` |" + '\n'
-                + "| firstspawnoverride | `" + plugin.getMVConfig().getFirstSpawnOverride() + "` |" + '\n'
-                + "| firstspawnworld | `" + plugin.getMVConfig().getFirstSpawnWorld() + "` |" + '\n'
-                + "| debug | `" + plugin.getMVConfig().getGlobalDebug() + "` |" + '\n';
-    }
-
-    private void addVersionInfoToEvent(MVVersionEvent event) {
-        // add the legacy version info
-        event.appendVersionInfo(this.getLegacyString());
-
-        // add the legacy file, but as markdown so it's readable
-        // TODO Readd this in 5.0.0
-        // event.putDetailedVersionInfo("version.md", this.getMarkdownString());
-
-        // add config.yml
-        File configFile = new File(this.plugin.getDataFolder(), "config.yml");
-        event.putDetailedVersionInfo("multiverse-core/config.yml", configFile);
-
-        // add worlds.yml
-        File worldsFile = new File(this.plugin.getDataFolder(), "worlds.yml");
-        event.putDetailedVersionInfo("multiverse-core/worlds.yml", worldsFile);
-    }
-
-    @Override
-    public void runCommand(final CommandSender sender, final List<String> args) {
-        // Check if the command was sent from a Player.
-        if (sender instanceof Player) {
-            sender.sendMessage("Version info dumped to console. Please check your server logs.");
-        }
-
-        MVVersionEvent versionEvent = new MVVersionEvent();
-
-        this.addVersionInfoToEvent(versionEvent);
-        this.plugin.getServer().getPluginManager().callEvent(versionEvent);
-
-        if (CommandHandler.hasFlag("--include-plugin-list", args)) {
-            versionEvent.appendVersionInfo('\n' + "Plugins: " + getPluginList());
-            versionEvent.putDetailedVersionInfo("plugins.txt", "Plugins: " + getPluginList());
-        }
-
-        final String versionInfo = versionEvent.getVersionInfo();
-        versionEvent.putDetailedVersionInfo("version.txt", versionInfo);
-
-        final Map<String, String> files = versionEvent.getDetailedVersionInfo();
-
-        // log to console
-        String[] lines = versionInfo.split("\\r?\\n");
-        for (String line : lines) {
-            if (!line.isEmpty()) {
-                this.plugin.getServer().getLogger().info(line);
-            }
-        }
-
-        BukkitRunnable logPoster = new BukkitRunnable() {
-            @Override
-            public void run() {
-                if (args.size() > 0) {
-                    String pasteUrl;
-                    if (CommandHandler.hasFlag("-b", args)) {
-                        // private post to pastebin
-                        pasteUrl = postToService(PasteServiceType.PASTEBIN, true, versionInfo, files);
-                    } else if (CommandHandler.hasFlag("-g", args)) {
-                        // private post to github
-                        pasteUrl = postToService(PasteServiceType.GITHUB, true, versionInfo, files);
-                    } else if (CommandHandler.hasFlag("-h", args)) {
-                        // private post to hastebin
-                        pasteUrl = postToService(PasteServiceType.HASTEBIN, true, versionInfo, files);
-                    } else if (CommandHandler.hasFlag("-p", args)) {
-                        // private post to paste.gg
-                        pasteUrl = postToService(PasteServiceType.PASTEGG, true, versionInfo, files);
-                    } else {
-                        return;
-                    }
-
-                    if (!(sender instanceof ConsoleCommandSender)) {
-                        sender.sendMessage("Version info dumped here: " + ChatColor.GREEN + pasteUrl);
-                    }
-                    Logging.info("Version info dumped here: %s", pasteUrl);
-                }
-            }
-        };
-
-        // Run the log posting operation asynchronously, since we don't know how long it will take.
-        logPoster.runTaskAsynchronously(this.plugin);
-    }
-
-    /**
-     * Send the current contents of this.pasteBinBuffer to a web service.
-     *
-     * @param type       Service type to send paste data to.
-     * @param isPrivate  Should the paste be marked as private.
-     * @param pasteData  Legacy string only data to post to a service.
-     * @param pasteFiles Map of filenames/contents of debug info.
-     * @return URL of visible paste
-     */
-    private static String postToService(PasteServiceType type, boolean isPrivate, String pasteData, Map<String, String> pasteFiles) {
-        PasteService ps = PasteServiceFactory.getService(type, isPrivate);
-
-        try {
-            String result;
-            if (ps.supportsMultiFile()) {
-                result = ps.postData(pasteFiles);
-            } else {
-                result = ps.postData(pasteData);
-            }
-
-            if (SHORTENER != null) return SHORTENER.shorten(result);
-            return result;
-        } catch (PasteFailedException e) {
-            e.printStackTrace();
-            return "Error posting to service.";
-        } catch (NullPointerException e) {
-            e.printStackTrace();
-            return "That service isn't supported yet.";
-        }
-    }
-
-    private String getPluginList() {
-        return StringUtils.join(plugin.getServer().getPluginManager().getPlugins(), ", ");
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/WhoCommand.java

@@ -1,118 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.List;
-
-/**
- * States who is in what world.
- */
-public class WhoCommand extends MultiverseCommand {
-
-    private MVWorldManager worldManager;
-
-    public WhoCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Who?");
-        this.setCommandUsage("/mv who" + ChatColor.GOLD + " [WORLD|--all]");
-        this.setArgRange(0, 1);
-        this.addKey("mv who");
-        this.addKey("mvw");
-        this.addKey("mvwho");
-        this.addCommandExample("/mv who");
-        this.addCommandExample(String.format("/mv who %s--all", ChatColor.GREEN));
-        this.addCommandExample(String.format("/mv who %smyworld", ChatColor.GOLD));
-        this.setPermission("multiverse.core.list.who", "States who is in what world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // If this command was sent from a Player then we need to check Permissions
-        Player p = null;
-        // By default, show all from the console
-        boolean showAll = true;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-            showAll = false;
-        }
-
-        final Collection onlinePlayers = plugin.getServer().getOnlinePlayers();
-        final Collection<Player> visiblePlayers = new HashSet<Player>(onlinePlayers.size());
-        for (final Object player : onlinePlayers) {
-            if (player instanceof Player && (p == null || p.canSee((Player) player))) {
-                visiblePlayers.add((Player) player);
-            }
-        }
-
-        if (args.size()  == 1) {
-            if (args.get(0).equalsIgnoreCase("--all") || args.get(0).equalsIgnoreCase("-a")) {
-                showAll = true;
-            } else {
-                // single world mode
-                MultiverseWorld world = this.worldManager.getMVWorld(args.get(0));
-                if (world == null) {
-                    sender.sendMessage(ChatColor.RED + "That world does not exist.");
-                    return;
-                }
-
-                if (!this.plugin.getMVPerms().canEnterWorld(p, world)) {
-                    sender.sendMessage(ChatColor.RED + "You aren't allowed to access to this world!");
-                    return;
-                }
-
-                sender.sendMessage(String.format("%s--- Players in %s%s ---", ChatColor.AQUA,
-                        world.getColoredWorldString(), ChatColor.AQUA));
-                sender.sendMessage(this.buildPlayerString(world, p, visiblePlayers));
-                return;
-            }
-        }
-
-        // multiworld mode
-        sender.sendMessage(ChatColor.AQUA + "--- Worlds and their players --- "
-                + visiblePlayers.size() + "/" + plugin.getServer().getMaxPlayers());
-        boolean shownOne = false;
-        for (MultiverseWorld world : this.worldManager.getMVWorlds()) {
-            if (this.plugin.getMVPerms().canEnterWorld(p, world)) { // only show world if the player can access it
-                if (showAll || !world.getCBWorld().getPlayers().isEmpty()) { // either show all or show if the world is not empty
-                    sender.sendMessage(String.format("%s%s - %s", world.getColoredWorldString(), ChatColor.WHITE, buildPlayerString(world, p, visiblePlayers)));
-                    shownOne = true;
-                }
-            }
-        }
-        if (!shownOne) {
-            sender.sendMessage("No worlds found.");
-        }
-        return;
-    }
-
-    private static String buildPlayerString(MultiverseWorld world, Player viewer, final Collection<Player> visiblePlayers) {
-        // Retrieve the players in this world
-        List<Player> players = world.getCBWorld().getPlayers();
-        StringBuilder playerBuilder = new StringBuilder();
-        for (Player player : players) {
-            // If the viewer is the console or the viewier is allowed to see the player, show them.
-            // Make sure we're also ONLY showing online players.
-            // Since we already checked visible players, we'll just make sure who we're about to show is in that.
-            if (visiblePlayers.contains(player))
-                playerBuilder.append(player.getDisplayName()).append(", ");
-        }
-        String bString = playerBuilder.toString();
-        return (bString.length() == 0) ? "No players found." : bString.substring(0, bString.length() - 2);
-    }
-}

src/main/java/com/onarandombox/MultiverseCore/commands/package-info.java

@@ -1,4 +1,4 @@
 /**
- * This package contains all Commands.
+ * This package contains all the commands for Multiverse-Core.
  */
 package com.onarandombox.MultiverseCore.commands;

src/main/java/com/onarandombox/MultiverseCore/commandtools/MVCommandCompletions.java

@@ -0,0 +1,146 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import co.aikar.commands.BukkitCommandCompletionContext;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.PaperCommandCompletions;
+import co.aikar.commands.RegisteredCommand;
+import co.aikar.commands.RootCommand;
+import com.google.common.collect.Sets;
+import com.onarandombox.MultiverseCore.api.MVWorld;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.destination.DestinationsProvider;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import jakarta.inject.Inject;
+import org.bukkit.GameRule;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+public class MVCommandCompletions extends PaperCommandCompletions {
+
+    protected final MVCommandManager commandManager;
+    private final MVWorldManager worldManager;
+    private final DestinationsProvider destinationsProvider;
+
+    @Inject
+    public MVCommandCompletions(
+            @NotNull MVCommandManager mvCommandManager,
+            @NotNull MVWorldManager worldManager,
+            @NotNull DestinationsProvider destinationsProvider,
+            @NotNull MVCoreConfig config
+            ) {
+        super(mvCommandManager);
+        this.commandManager = mvCommandManager;
+        this.worldManager = worldManager;
+        this.destinationsProvider = destinationsProvider;
+
+        registerAsyncCompletion("commands", this::suggestCommands);
+        registerAsyncCompletion("destinations", this::suggestDestinations);
+        registerAsyncCompletion("flags", this::suggestFlags);
+        registerStaticCompletion("gamerules", this::suggestGamerules);
+        registerStaticCompletion("mvconfigs", config.getNodes().getNames());
+        registerAsyncCompletion("mvworlds", this::suggestMVWorlds);
+
+        setDefaultCompletion("destinations", ParsedDestination.class);
+        setDefaultCompletion("flags", String[].class);
+        setDefaultCompletion("gamerules", GameRule.class);
+        setDefaultCompletion("mvworlds", MVWorld.class);
+    }
+
+    private Collection<String> suggestCommands(BukkitCommandCompletionContext context) {
+        String rootCmdName = context.getConfig();
+        if (rootCmdName == null) {
+            return Collections.emptyList();
+        }
+
+        RootCommand rootCommand = this.commandManager.getRegisteredRootCommands().stream()
+                .unordered()
+                .filter(c -> c.getCommandName().equals(rootCmdName))
+                .findFirst()
+                .orElse(null);
+
+        if (rootCommand == null) {
+            return Collections.emptyList();
+        }
+
+        return rootCommand.getSubCommands().entries().stream()
+                .filter(entry -> checkPerms(context.getIssuer(), entry.getValue()))
+                .map(Map.Entry::getKey)
+                .filter(cmdName -> !cmdName.startsWith("__"))
+                .collect(Collectors.toList());
+    }
+
+    private boolean checkPerms(CommandIssuer issuer, RegisteredCommand<?> command) {
+        return this.commandManager.hasPermission(issuer, command.getRequiredPermissions());
+    }
+
+    private Collection<String> suggestDestinations(BukkitCommandCompletionContext context) {
+        if (context.hasConfig("playerOnly") && !context.getIssuer().isPlayer()) {
+            return Collections.emptyList();
+        }
+
+        return this.destinationsProvider
+                .suggestDestinations((BukkitCommandIssuer)context.getIssuer(), context.getInput());
+    }
+
+    private Collection<String> suggestFlags(@NotNull BukkitCommandCompletionContext context) {
+        return this.commandManager.getFlagsManager().suggest(
+                context.getConfig("groupName", ""), context.getContextValue(String[].class));
+    }
+
+    private Collection<String> suggestGamerules() {
+        return Arrays.stream(GameRule.values()).map(GameRule::getName).collect(Collectors.toList());
+    }
+
+    private Collection<String> suggestMVWorlds(BukkitCommandCompletionContext context) {
+        if (context.hasConfig("playerOnly") && !context.getIssuer().isPlayer()) {
+            return Collections.emptyList();
+        }
+
+        if (!context.hasConfig("multiple")) {
+            return getMVWorldNames(context);
+        }
+
+        String input = context.getInput();
+        int lastComma = input.lastIndexOf(',');
+        String currentWorldsString = input.substring(0, lastComma + 1);
+        Set<String> currentWorlds = Sets.newHashSet(input.split(","));
+        return getMVWorldNames(context).stream()
+                .filter(world -> !currentWorlds.contains(world))
+                .map(world -> currentWorldsString + world)
+                .collect(Collectors.toList());
+    }
+
+    private List<String> getMVWorldNames(BukkitCommandCompletionContext context) {
+        String scope = context.getConfig("scope", "loaded");
+        List<String> worlds = new ArrayList<>();
+        switch (scope) {
+            case "both":
+                worlds.addAll(worldManager.getUnloadedWorlds());
+            case "loaded":
+                worldManager.getMVWorlds()
+                        .stream()
+                        .map(MVWorld::getName)
+                        .forEach(worlds::add);
+                break;
+            case "unloaded":
+                worlds.addAll(worldManager.getUnloadedWorlds());
+                break;
+            case "potential":
+                worlds.addAll(worldManager.getPotentialWorlds());
+                break;
+        }
+        return worlds;
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/MVCommandConditions.java

@@ -0,0 +1,80 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BukkitCommandExecutionContext;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.BukkitConditionContext;
+import co.aikar.commands.CommandConditions;
+import co.aikar.commands.ConditionContext;
+import co.aikar.commands.ConditionFailedException;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.world.WorldNameChecker;
+import jakarta.annotation.PostConstruct;
+import org.jetbrains.annotations.NotNull;
+
+public class MVCommandConditions {
+    static void load(MVCommandManager commandManager, MVWorldManager worldManager) {
+        new MVCommandConditions(commandManager, worldManager);
+    }
+
+    private final MVWorldManager worldManager;
+    private final MVCommandManager commandManager;
+
+    private MVCommandConditions(@NotNull MVCommandManager commandManager, @NotNull MVWorldManager worldManager) {
+        this.worldManager = worldManager;
+        this.commandManager = commandManager;
+    }
+
+    @PostConstruct
+    private void registerConditions() {
+        CommandConditions<BukkitCommandIssuer, BukkitCommandExecutionContext, BukkitConditionContext> conditions
+                = commandManager.getCommandConditions();
+
+        conditions.addCondition(String.class, "validWorldName", this::checkValidWorldName);
+    }
+
+    private void checkValidWorldName(ConditionContext<BukkitCommandIssuer> context,
+                                     BukkitCommandExecutionContext executionContext,
+                                     String worldName
+    ) {
+        String scope = context.getConfigValue("scope", "loaded");
+
+        switch (scope) {
+            // Worlds that are loaded
+            case "loaded":
+                if (!this.worldManager.isMVWorld(worldName)) {
+                    throw new ConditionFailedException("World with name '" + worldName + "' does not exist or is not loaded!");
+                }
+                break;
+            // Worlds that are unloaded
+            case "unloaded":
+                if (!this.worldManager.hasUnloadedWorld(worldName, false)) {
+                    if (this.worldManager.isMVWorld(worldName)) {
+                        throw new ConditionFailedException("World with name '" + worldName + "' is loaded already!");
+                    }
+                    throw new ConditionFailedException("World with name '" + worldName + "' does not exist!");
+                }
+                break;
+            // World that are loaded or unloaded
+            case "both":
+                if (!this.worldManager.hasUnloadedWorld(worldName, true)) {
+                    throw new ConditionFailedException("World with name '" + worldName + "' does not exist!");
+                }
+                break;
+            // World that are does not exist
+            case "new":
+                if (this.worldManager.hasUnloadedWorld(worldName, true)) {
+                    throw new ConditionFailedException("World with name '" + worldName + "' already exists!");
+                }
+                switch (WorldNameChecker.checkName(worldName)) {
+                    case INVALID_CHARS:
+                        throw new ConditionFailedException("World name '" + worldName + "' contains invalid characters!");
+                    case BLACKLISTED:
+                        throw new ConditionFailedException("World name '" + worldName + "' is used for critical server operations and is blacklisted!");
+                }
+                break;
+            // Probably a typo happened here
+            default:
+                throw new ConditionFailedException("Unknown scope '" + scope + "'!");
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/MVCommandContexts.java

@@ -0,0 +1,356 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Set;
+
+import co.aikar.commands.BukkitCommandExecutionContext;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.PaperCommandContexts;
+import co.aikar.commands.contexts.ContextResolver;
+import com.google.common.base.Strings;
+import com.onarandombox.MultiverseCore.api.MVWorld;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.context.GameRuleValue;
+import com.onarandombox.MultiverseCore.commandtools.context.MVConfigValue;
+import com.onarandombox.MultiverseCore.config.MVCoreConfig;
+import com.onarandombox.MultiverseCore.configuration.node.Node;
+import com.onarandombox.MultiverseCore.configuration.node.ValueNode;
+import com.onarandombox.MultiverseCore.destination.DestinationsProvider;
+import com.onarandombox.MultiverseCore.destination.ParsedDestination;
+import com.onarandombox.MultiverseCore.display.filters.ContentFilter;
+import com.onarandombox.MultiverseCore.display.filters.DefaultContentFilter;
+import com.onarandombox.MultiverseCore.display.filters.RegexContentFilter;
+import com.onarandombox.MultiverseCore.utils.PlayerFinder;
+import io.vavr.control.Option;
+import jakarta.inject.Inject;
+import org.bukkit.GameRule;
+import org.bukkit.entity.Player;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+public class MVCommandContexts extends PaperCommandContexts {
+
+    private final MVCommandManager mvCommandManager;
+    private final DestinationsProvider destinationsProvider;
+    private final MVWorldManager worldManager;
+    private final MVCoreConfig config;
+
+    @Inject
+    public MVCommandContexts(
+            MVCommandManager mvCommandManager,
+            DestinationsProvider destinationsProvider,
+            MVWorldManager worldManager,
+            MVCoreConfig config
+    ) {
+        super(mvCommandManager);
+        this.mvCommandManager = mvCommandManager;
+        this.destinationsProvider = destinationsProvider;
+        this.worldManager = worldManager;
+        this.config = config;
+
+        registerIssuerOnlyContext(BukkitCommandIssuer.class, BukkitCommandExecutionContext::getIssuer);
+        registerIssuerOnlyContext(MVCommandIssuer.class, this::parseMVCommandIssuer);
+        registerOptionalContext(ContentFilter.class, this::parseContentFilter);
+        registerContext(ParsedDestination.class, this::parseDestination);
+        registerContext(GameRule.class, this::parseGameRule);
+        registerContext(GameRuleValue.class, this::parseGameRuleValue);
+        registerContext(MVConfigValue.class, this::parseMVConfigValue);
+        registerIssuerAwareContext(MVWorld.class, this::parseMVWorld);
+        registerIssuerAwareContext(MVWorld[].class, this::parseMVWorldArray);
+        registerIssuerAwareContext(Player.class, this::parsePlayer);
+        registerIssuerAwareContext(Player[].class, this::parsePlayerArray);
+    }
+
+    private MVCommandIssuer parseMVCommandIssuer(BukkitCommandExecutionContext context) {
+        if (context.getIssuer() instanceof MVCommandIssuer) {
+            return (MVCommandIssuer) context.getIssuer();
+        }
+        return mvCommandManager.getCommandIssuer(context.getSender());
+    }
+
+    private ContentFilter parseContentFilter(BukkitCommandExecutionContext context) {
+        if (Strings.isNullOrEmpty(context.getFirstArg())) {
+            return DefaultContentFilter.get();
+        }
+        String filterString = context.popFirstArg();
+        return RegexContentFilter.fromString(filterString);
+    }
+
+    private ParsedDestination<?> parseDestination(BukkitCommandExecutionContext context) {
+        String destination = context.popFirstArg();
+        if (Strings.isNullOrEmpty(destination)) {
+            throw new InvalidCommandArgument("No destination specified.");
+        }
+
+        ParsedDestination<?> parsedDestination = destinationsProvider.parseDestination(destination);
+        if (parsedDestination == null) {
+            throw new InvalidCommandArgument("The destination " + destination + " is not valid.");
+        }
+
+        return parsedDestination;
+    }
+
+    private GameRule<?> parseGameRule(BukkitCommandExecutionContext context) {
+        String gameRuleName = context.popFirstArg();
+        if (Strings.isNullOrEmpty(gameRuleName)) {
+            throw new InvalidCommandArgument("No game rule specified.");
+        }
+
+        GameRule<?> gameRule = GameRule.getByName(gameRuleName);
+        if (gameRule == null) {
+            throw new InvalidCommandArgument("The game rule " + gameRuleName + " is not valid.");
+        }
+
+        return gameRule;
+    }
+
+    private GameRuleValue parseGameRuleValue(BukkitCommandExecutionContext context) {
+        GameRule<?> gameRule = (GameRule<?>) context.getResolvedArg(GameRule.class);
+        if (gameRule == null) {
+            throw new InvalidCommandArgument("No game rule specified.");
+        }
+        String valueString = context.getFirstArg();
+        if (Strings.isNullOrEmpty(valueString)) {
+            throw new InvalidCommandArgument("No game rule value specified.");
+        }
+
+        ContextResolver<?, BukkitCommandExecutionContext> resolver = getResolver(gameRule.getType());
+        if (resolver == null) {
+            return new GameRuleValue(valueString);
+        }
+
+        Object resolvedValue = resolver.getContext(context);
+        if (resolvedValue == null) {
+            throw new InvalidCommandArgument("The game rule value " + valueString + " is not valid for game rule " + gameRule.getName() + ".");
+        }
+
+        return new GameRuleValue(resolvedValue);
+    }
+
+    private MVConfigValue parseMVConfigValue(BukkitCommandExecutionContext context) {
+        String configName = (String) context.getResolvedArg(String.class);
+        if (Strings.isNullOrEmpty(configName)) {
+            throw new InvalidCommandArgument("No config name specified.");
+        }
+        Option<Node> node = config.getNodes().findNode(configName);
+        if (node.isEmpty()) {
+            throw new InvalidCommandArgument("The config " + configName + " is not valid.");
+        }
+
+        String valueString = context.getFirstArg();
+        if (Strings.isNullOrEmpty(valueString)) {
+            throw new InvalidCommandArgument("No config value specified.");
+        }
+
+        if (!(node.get() instanceof ValueNode)) {
+            context.popFirstArg();
+            return new MVConfigValue(valueString);
+        }
+
+        ContextResolver<?, BukkitCommandExecutionContext> resolver = getResolver(((ValueNode<?>) node.get()).getType());
+        if (resolver == null) {
+            context.popFirstArg();
+            return new MVConfigValue(valueString);
+        }
+
+        Object resolvedValue = resolver.getContext(context);
+        if (resolvedValue == null) {
+            throw new InvalidCommandArgument("The config value " + valueString + " is not valid for config " + configName + ".");
+        }
+        return new MVConfigValue(resolvedValue);
+    }
+
+    private MVWorld parseMVWorld(BukkitCommandExecutionContext context) {
+        String resolve = context.getFlagValue("resolve", "");
+
+        // Get world based on sender only
+        if (resolve.equals("issuerOnly")) {
+            if (context.getIssuer().isPlayer()) {
+                return worldManager.getMVWorld(context.getIssuer().getPlayer().getWorld());
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("This command can only be used by a player in a Multiverse World.");
+        }
+
+        String worldName = context.getFirstArg();
+        MVWorld world = worldManager.getMVWorld(worldName);
+
+        // Get world based on input, fallback to sender if input is not a world
+        if (resolve.equals("issuerAware")) {
+            if (world != null) {
+                context.popFirstArg();
+                return world;
+            }
+            if (context.getIssuer().isPlayer()) {
+                return worldManager.getMVWorld(context.getIssuer().getPlayer().getWorld());
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("Player is not in a Multiverse World.");
+        }
+
+        // Get world based on input only
+        if (world != null) {
+            context.popFirstArg();
+            return world;
+        }
+        if (!context.isOptional()) {
+            return null;
+        }
+        throw new InvalidCommandArgument("World " + worldName + " is not a loaded multiverse world.");
+    }
+
+    private MVWorld[] parseMVWorldArray(BukkitCommandExecutionContext context) {
+        String resolve = context.getFlagValue("resolve", "");
+
+        MVWorld playerWorld = null;
+        if (context.getIssuer().isPlayer()) {
+            playerWorld = worldManager.getMVWorld(context.getIssuer().getPlayer().getWorld());
+        }
+
+        // Get world based on sender only
+        if (resolve.equals("issuerOnly")) {
+            if (playerWorld != null) {
+                return new MVWorld[]{playerWorld};
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("This command can only be used by a player in a Multiverse World.");
+        }
+
+        String worldStrings = context.getFirstArg();
+        String[] worldNames = worldStrings.split(",");
+        Set<MVWorld> worlds = new HashSet<>(worldNames.length);
+        for (String worldName : worldNames) {
+            if ("*".equals(worldName)) {
+                worlds.addAll(worldManager.getMVWorlds());
+                break;
+            }
+            MVWorld world = worldManager.getMVWorld(worldName);
+            if (world == null) {
+                throw new InvalidCommandArgument("World " + worldName + " is not a loaded multiverse world.");
+            }
+            worlds.add(world);
+        }
+
+        // Get world based on input, fallback to sender if input is not a world
+        if (resolve.equals("issuerAware")) {
+            if (!worlds.isEmpty()) {
+                context.popFirstArg();
+                return worlds.toArray(new MVWorld[0]);
+            }
+            if (playerWorld != null) {
+                return new MVWorld[]{playerWorld};
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("Player is not in a Multiverse World.");
+        }
+
+        // Get world based on input only
+        if (!worlds.isEmpty()) {
+            context.popFirstArg();
+            return worlds.toArray(new MVWorld[0]);
+        }
+        if (!context.isOptional()) {
+            return null;
+        }
+        throw new InvalidCommandArgument("World " + worldStrings + " is not a loaded multiverse world.");
+    }
+
+    private Player parsePlayer(BukkitCommandExecutionContext context) {
+        String resolve = context.getFlagValue("resolve", "");
+
+        // Get player based on sender only
+        if (resolve.equals("issuerOnly")) {
+            if (context.getIssuer().isPlayer()) {
+                return context.getIssuer().getPlayer();
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("This command can only be used by a player.");
+        }
+
+        String playerIdentifier = context.getFirstArg();
+        Player player = PlayerFinder.get(playerIdentifier, context.getSender());
+
+        // Get player based on input, fallback to sender if input is not a player
+        if (resolve.equals("issuerAware")) {
+            if (player != null) {
+                context.popFirstArg();
+                return player;
+            }
+            if (context.getIssuer().isPlayer()) {
+                return context.getIssuer().getPlayer();
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("Invalid player: " + playerIdentifier
+                    + ". Either specify an online player or use this command as a player.");
+        }
+
+        // Get player based on input only
+        if (player != null) {
+            context.popFirstArg();
+            return player;
+        }
+        if (!context.isOptional()) {
+            return null;
+        }
+        throw new InvalidCommandArgument("Player " + playerIdentifier + " not found.");
+    }
+
+
+    private Player[] parsePlayerArray(BukkitCommandExecutionContext context) {
+        String resolve = context.getFlagValue("resolve", "");
+
+        // Get player based on sender only
+        if (resolve.equals("issuerOnly")) {
+            if (context.getIssuer().isPlayer()) {
+                return new Player[]{context.getIssuer().getPlayer()};
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("This command can only be used by a player.");
+        }
+
+        String playerIdentifier = context.getFirstArg();
+        Player[] players = PlayerFinder.getMulti(playerIdentifier, context.getSender()).toArray(new Player[0]);
+
+        // Get player based on input, fallback to sender if input is not a player
+        if (resolve.equals("issuerAware")) {
+            if (players.length > 0) {
+                context.popFirstArg();
+                return players;
+            }
+            if (context.getIssuer().isPlayer()) {
+                return new Player[]{context.getIssuer().getPlayer()};
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("Invalid player: " + playerIdentifier
+                    + ". Either specify an online player or use this command as a player.");
+        }
+
+        // Get player based on input only
+        if (players.length > 0) {
+            context.popFirstArg();
+            return players;
+        }
+        if (!context.isOptional()) {
+            return null;
+        }
+        throw new InvalidCommandArgument("Player " + playerIdentifier + " not found.");
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/MVCommandIssuer.java

@@ -0,0 +1,48 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.MessageType;
+import co.aikar.commands.OpenBukkitCommandIssuer;
+import co.aikar.locales.MessageKeyProvider;
+import com.onarandombox.MultiverseCore.utils.message.Message;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class MVCommandIssuer extends OpenBukkitCommandIssuer {
+
+    private final MVCommandManager commandManager;
+
+    MVCommandIssuer(@NotNull MVCommandManager commandManager, @NotNull CommandSender sender) {
+        super(commandManager, sender);
+        this.commandManager = commandManager;
+    }
+
+    @Override
+    public MVCommandManager getManager() {
+        return commandManager;
+    }
+
+    public void sendError(Message message) {
+        sendMessage(MessageType.ERROR, message);
+    }
+
+    public void sendSyntax(Message message) {
+        sendMessage(MessageType.SYNTAX, message);
+    }
+
+    public void sendInfo(Message message) {
+        sendMessage(MessageType.INFO, message);
+    }
+
+    private void sendMessage(MessageType messageType, Message message) {
+        if (message instanceof MessageKeyProvider) {
+            sendMessage(messageType, (MessageKeyProvider) message, message.getReplacements());
+        } else {
+            var formatter = getManager().getFormat(messageType);
+            if (formatter != null) {
+                sendMessage(formatter.format(message.formatted()));
+            } else {
+                sendMessage(message.formatted());
+            }
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/MVCommandManager.java

@@ -0,0 +1,136 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import java.util.List;
+
+import co.aikar.commands.BukkitCommandCompletionContext;
+import co.aikar.commands.BukkitCommandExecutionContext;
+import co.aikar.commands.BukkitLocales;
+import co.aikar.commands.CommandCompletions;
+import co.aikar.commands.CommandContexts;
+import co.aikar.commands.CommandHelp;
+import co.aikar.commands.HelpEntry;
+import co.aikar.commands.PaperCommandManager;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagsManager;
+import com.onarandombox.MultiverseCore.commandtools.queue.CommandQueueManager;
+import jakarta.inject.Inject;
+import jakarta.inject.Provider;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+/**
+ * Main class to manage permissions.
+ */
+@Service
+public class MVCommandManager extends PaperCommandManager {
+
+    private final CommandFlagsManager flagsManager;
+    private final CommandQueueManager commandQueueManager;
+    private final Provider<MVCommandContexts> commandContextsProvider;
+    private final Provider<MVCommandCompletions> commandCompletionsProvider;
+
+    @Inject
+    public MVCommandManager(
+            @NotNull MultiverseCore plugin,
+            @NotNull CommandFlagsManager flagsManager,
+            @NotNull CommandQueueManager commandQueueManager,
+            @NotNull Provider<MVCommandContexts> commandContextsProvider,
+            @NotNull Provider<MVCommandCompletions> commandCompletionsProvider,
+            @NotNull MVWorldManager worldManager
+    ) {
+        super(plugin);
+        this.flagsManager = flagsManager;
+        this.commandQueueManager = commandQueueManager;
+        this.commandContextsProvider = commandContextsProvider;
+        this.commandCompletionsProvider = commandCompletionsProvider;
+
+        MVCommandConditions.load(this, worldManager);
+        this.enableUnstableAPI("help");
+    }
+
+    void loadLanguages(PluginLocales locales) {
+        if (this.locales == null) {
+            this.locales = locales;
+            this.locales.loadLanguages();
+        }
+    }
+
+    @Override
+    public BukkitLocales getLocales() {
+        return this.locales;
+    }
+
+    /**
+     * Gets class responsible for flag handling.
+     *
+     * @return A not-null {@link CommandFlagsManager}.
+     */
+    public synchronized @NotNull CommandFlagsManager getFlagsManager() {
+        return flagsManager;
+    }
+
+    /**
+     * Manager for command that requires /mv confirm before execution.
+     *
+     * @return A non-null {@link CommandQueueManager}.
+     */
+    public synchronized @NotNull CommandQueueManager getCommandQueueManager() {
+        return commandQueueManager;
+    }
+
+    /**
+     * Gets class responsible for parsing string args into objects.
+     *
+     * @return A not-null {@link CommandContexts}.
+     */
+    @Override
+    public synchronized @NotNull CommandContexts<BukkitCommandExecutionContext> getCommandContexts() {
+        if (this.contexts == null) {
+            this.contexts = commandContextsProvider.get();
+        }
+        return this.contexts;
+    }
+
+    /**
+     * Gets class responsible for tab-completion handling.
+     *
+     * @return A not-null {@link CommandCompletions}.
+     */
+    @Override
+    public synchronized @NotNull CommandCompletions<BukkitCommandCompletionContext> getCommandCompletions() {
+        if (this.completions == null) {
+            this.completions = commandCompletionsProvider.get();
+        }
+        return this.completions;
+    }
+
+    /**
+     * Standardise usage command formatting for all mv modules.
+     *
+     * @param help The target {@link CommandHelp}.
+     */
+    public void showUsage(@NotNull CommandHelp help) {
+        List<HelpEntry> entries = help.getHelpEntries();
+        if (entries.size() == 1) {
+            getHelpFormatter().showDetailedHelp(help, entries.get(0));
+            return;
+        }
+        help.showHelp();
+    }
+
+    public @NotNull MVCommandIssuer getConsoleCommandIssuer() {
+        return getCommandIssuer(Bukkit.getConsoleSender());
+    }
+
+    @Override
+    public @NotNull MVCommandIssuer getCommandIssuer(Object issuer) {
+        if (!(issuer instanceof CommandSender)) {
+            throw new IllegalArgumentException(issuer.getClass().getName() + " is not a Command Issuer.");
+        } else {
+            return new MVCommandIssuer(this, (CommandSender)issuer);
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/MultiverseCommand.java

@@ -0,0 +1,35 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BaseCommand;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flags.CommandFlagsManager;
+import com.onarandombox.MultiverseCore.commandtools.flags.ParsedCommandFlags;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Contract;
+
+@Contract
+public abstract class MultiverseCommand extends BaseCommand {
+
+    protected final MVCommandManager commandManager;
+    private String flagGroupName;
+
+    protected MultiverseCommand(@NotNull MVCommandManager commandManager) {
+        this.commandManager = commandManager;
+    }
+
+    protected CommandFlagsManager getFlagsManager() {
+        return commandManager.getFlagsManager();
+    }
+
+    protected void registerFlagGroup(@NotNull CommandFlagGroup flagGroup) {
+        if (flagGroupName != null) {
+            throw new IllegalStateException("Flag group already registered! (name: " + flagGroupName + ")");
+        }
+        getFlagsManager().registerFlagGroup(flagGroup);
+        flagGroupName = flagGroup.getName();
+    }
+
+    protected @NotNull ParsedCommandFlags parseFlags(@NotNull String[] flags) {
+        return getFlagsManager().parse(flagGroupName, flags);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/PluginLocales.java

@@ -0,0 +1,49 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BukkitLocales;
+import com.onarandombox.MultiverseCore.utils.file.FileResClassLoader;
+import jakarta.inject.Inject;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+/**
+ * Locale manager with additional methods for loading locales from plugin's locales folder.
+ */
+@Service
+public class PluginLocales extends BukkitLocales {
+
+    private static final String DEFAULT_LOCALE_FOLDER_PATH = "locales";
+
+    /**
+     * Creates a new instance of {@link PluginLocales}.
+     *
+     * @param manager   The command manager.
+     */
+    @Inject
+    public PluginLocales(MVCommandManager manager) {
+        super(manager);
+        manager.loadLanguages(this);
+    }
+
+    /**
+     * Adds a {@link FileResClassLoader} to the list of class loaders to load locales data from.
+     *
+     * @param plugin    The plugin.
+     * @return True if the class loader was added successfully.
+     */
+    public boolean addFileResClassLoader(@NotNull Plugin plugin) {
+        return this.addBundleClassLoader(new FileResClassLoader(plugin, DEFAULT_LOCALE_FOLDER_PATH));
+    }
+
+    /**
+     * Adds a {@link FileResClassLoader} to the list of class loaders to load locales data from.
+     *
+     * @param plugin            The plugin.
+     * @param localesFolderPath The path to the folder containing the locales.
+     * @return True if the class loader was added successfully.
+     */
+    public boolean addFileResClassLoader(@NotNull Plugin plugin, @NotNull String localesFolderPath) {
+        return this.addBundleClassLoader(new FileResClassLoader(plugin, localesFolderPath));
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/context/GameRuleValue.java

@@ -0,0 +1,13 @@
+package com.onarandombox.MultiverseCore.commandtools.context;
+
+public class GameRuleValue {
+    private final Object value;
+
+    public GameRuleValue(Object value) {
+        this.value = value;
+    }
+
+    public Object getValue() {
+        return value;
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/context/MVConfigValue.java

@@ -0,0 +1,13 @@
+package com.onarandombox.MultiverseCore.commandtools.context;
+
+public class MVConfigValue {
+    private final Object value;
+
+    public MVConfigValue(Object value) {
+        this.value = value;
+    }
+
+    public Object getValue() {
+        return value;
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/CommandFlag.java

@@ -0,0 +1,93 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents a flag.
+ */
+public class CommandFlag {
+    /**
+     * A builder for a flag.
+     *
+     * @param key The key for the new flag.
+     * @return The builder.
+     */
+    public static @NotNull Builder<?> builder(@NotNull String key){
+        return new Builder<>(key);
+    }
+
+    private final String key;
+    private final List<String> aliases;
+
+    /**
+     * Creates a new flag.
+     *
+     * @param builder The builder.
+     */
+    protected CommandFlag(@NotNull Builder<?> builder) {
+        key = builder.key;
+        aliases = builder.aliases;
+    }
+
+    /**
+     * Get the key of this flag.
+     *
+     * @return The key of this flag.
+     */
+    public @NotNull String getKey() {
+        return key;
+    }
+
+    /**
+     * Get the aliases of this flag.
+     *
+     * @return The aliases of this flag.
+     */
+    public @NotNull List<String> getAliases() {
+        return aliases;
+    }
+
+    /**
+     * A builder for a flag.
+     *
+     * @param <S> The type of the builder.
+     */
+    public static class Builder<S extends Builder<?>> {
+        private final String key;
+        private final List<String> aliases;
+
+        /**
+         * Create a new builder.
+         *
+         * @param key The key for the new flag.
+         */
+        public Builder(@NotNull String key) {
+            this.key = key;
+            aliases = new ArrayList<>();
+        }
+
+        /**
+         * Add one or more alias to the flag.
+         *
+         * @param alias The alias to add.
+         * @return The builder.
+         */
+        public @NotNull S addAlias(@NotNull String...alias){
+            Collections.addAll(this.aliases, alias);
+            return (S) this;
+        }
+
+        /**
+         * Build the flag.
+         *
+         * @return The flag.
+         */
+        public @NotNull CommandFlag build(){
+            return new CommandFlag(this);
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/CommandFlagGroup.java

@@ -0,0 +1,129 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A group of flags.
+ */
+public class CommandFlagGroup {
+    /**
+     * A builder for a flag group.
+     *
+     * @param name The name of the group.
+     * @return The builder.
+     */
+    public static @NotNull Builder builder(@NotNull String name) {
+        return new Builder(name);
+    }
+
+    private final String name;
+    private final List<String> keys;
+    private final Map<String, CommandFlag> keysFlagMap;
+
+    /**
+     * Creates a new flag group.
+     *
+     * @param builder The builder.
+     */
+    protected CommandFlagGroup(@NotNull Builder builder) {
+        name = builder.name;
+        keys = builder.keys;
+        keysFlagMap = builder.keysFlagMap;
+    }
+
+    /**
+     * Get the name of this group.
+     *
+     * @return The name of this group.
+     */
+    public @NotNull String getName() {
+        return name;
+    }
+
+    /**
+     * Check if this group contains a flag with the given key. Works with alias keys.
+     *
+     * @param key The key to check.
+     * @return True if the group contains a flag with the given key, false otherwise.
+     */
+    public boolean hasKey(@Nullable String key) {
+        return keysFlagMap.containsKey(key);
+    }
+
+    /**
+     * Get the remaining keys after the given flags have been removed. Works with alias keys.
+     *
+     * @param flags The flags to remove.
+     * @return The remaining keys.
+     */
+    public @NotNull Set<String> getRemainingKeys(@NotNull String[] flags) {
+        Set<String> keysRemaining = new HashSet<>(this.keys);
+        for (String flag : flags) {
+            CommandFlag mvFlag = this.getFlagByKey(flag);
+            if (mvFlag != null) {
+                keysRemaining.remove(mvFlag.getKey());
+            }
+        }
+        return keysRemaining;
+    }
+
+    /**
+     * Get a flag by its key. Alias keys are supported as well.
+     *
+     * @param key The key of the flag.
+     * @return The flag if found, null otherwise.
+     */
+    public @Nullable CommandFlag getFlagByKey(String key) {
+        return keysFlagMap.get(key);
+    }
+
+    /**
+     * A builder for {@link CommandFlagGroup}.
+     */
+    public static class Builder {
+        private final String name;
+        private final List<String> keys;
+        private final Map<String, CommandFlag> keysFlagMap;
+
+        /**
+         * Creates a new builder.
+         *
+         * @param name The name of the flag group.
+         */
+        public Builder(@NotNull String name) {
+            this.name = name;
+            this.keys = new ArrayList<>();
+            this.keysFlagMap = new HashMap<>();
+        }
+
+        /**
+         * Adds a flag to the group.
+         *
+         * @param flag The flag to add.
+         * @return The builder.
+         */
+        public @NotNull Builder add(CommandFlag flag) {
+            keys.add(flag.getKey());
+            keysFlagMap.put(flag.getKey(), flag);
+            flag.getAliases().forEach((alias) -> keysFlagMap.put(alias, flag));
+            return this;
+        }
+
+        /**
+         * Builds the flag group.
+         *
+         * @return The flag group.
+         */
+        public @NotNull CommandFlagGroup build() {
+            return new CommandFlagGroup(this);
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/CommandFlagsManager.java

@@ -0,0 +1,95 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import co.aikar.commands.InvalidCommandArgument;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jvnet.hk2.annotations.Service;
+
+/**
+ * Manages all the flag groups and parsing.
+ */
+@Service
+public class CommandFlagsManager {
+    private final Map<String, CommandFlagGroup> flagGroupMap;
+
+    /**
+     * Creates a new FlagsManager.
+     */
+    public CommandFlagsManager() {
+        flagGroupMap = new HashMap<>();
+    }
+
+    /**
+     * Registers a flag group.
+     *
+     * @param flagGroup The target flag group to register.
+     */
+    public void registerFlagGroup(@NotNull CommandFlagGroup flagGroup) {
+        flagGroupMap.put(flagGroup.getName(), flagGroup);
+    }
+
+    /**
+     *  Get a flag group by name.
+     *
+     * @param groupName The target flag group name.
+     * @return The flag group if found, null otherwise.
+     */
+    public @Nullable CommandFlagGroup getFlagGroup(@Nullable String groupName) {
+        return this.flagGroupMap.get(groupName);
+    }
+
+    /**
+     * Autocompletes suggestions for flags.
+     *
+     * @param groupName The target flag group name.
+     * @param flags The current flags so far.
+     * @return The list of suggestions.
+     */
+    public @NotNull Collection<String> suggest(@Nullable String groupName, @NotNull String[] flags) {
+        CommandFlagGroup flagGroup = this.getFlagGroup(groupName);
+        if (flagGroup == null) {
+            return Collections.emptyList();
+        }
+
+        Collection<String> suggestions = new ArrayList<>();
+        CommandFlag currentFlag = (flags.length <= 1) ? null : flagGroup.getFlagByKey(flags[flags.length - 2]);
+
+        if (currentFlag instanceof CommandValueFlag) {
+            CommandValueFlag<?> valueFlag = (CommandValueFlag<?>) currentFlag;
+            if (valueFlag.getCompletion() != null) {
+                suggestions.addAll(valueFlag.getCompletion().get());
+            }
+            if (valueFlag.isOptional()) {
+                suggestions.addAll(flagGroup.getRemainingKeys(flags));
+            }
+        } else {
+            suggestions.addAll(flagGroup.getRemainingKeys(flags));
+        }
+
+        return suggestions;
+    }
+
+    /**
+     * Parses the flags.
+     *
+     * @param groupName The target flag group name.
+     * @param flags The flags to parse.
+     * @return The parsed flags.
+     *
+     * @throws InvalidCommandArgument If the flags are invalid.
+     */
+    public @NotNull ParsedCommandFlags parse(@Nullable String groupName, @NotNull String[] flags) {
+        CommandFlagGroup flagGroup = this.getFlagGroup(groupName);
+        if (flagGroup == null) {
+            return ParsedCommandFlags.EMPTY;
+        }
+
+        return new CommandFlagsParser(this.getFlagGroup(groupName), flags).parse();
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/CommandFlagsParser.java

@@ -0,0 +1,118 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import co.aikar.commands.InvalidCommandArgument;
+
+/**
+ * Parses flags from a string array. Each parser should only be used once.
+ */
+public class CommandFlagsParser {
+    private final CommandFlagGroup flagGroup;
+    private final String[] flags;
+
+    private ParsedCommandFlags parsedFlags;
+    private boolean nextArgMayBeKey;
+    private boolean nextArgMayBeValue;
+    private CommandFlag currentFlag;
+
+    /**
+     * Creates a new CommandFlagsParser.
+     *
+     * @param flagGroup The flag group to parse flags for.
+     * @param flags The flags to parse.
+     */
+    public CommandFlagsParser(CommandFlagGroup flagGroup, String[] flags) {
+        this.flagGroup = flagGroup;
+        this.flags = flags;
+    }
+
+    /**
+     * Parses the flags.
+     *
+     * @return The parsed flags.
+     */
+    public ParsedCommandFlags parse() {
+        parsedFlags = new ParsedCommandFlags();
+
+        // First argument is always a key
+        this.nextArgMayBeKey = true;
+        this.nextArgMayBeValue = false;
+
+        for (String flag : flags) {
+            if (this.nextArgMayBeKey) {
+                if (parseKey(flag)) continue;
+            }
+            if (this.nextArgMayBeValue) {
+                if (parseValue(flag)) continue;
+            }
+            throw new InvalidCommandArgument(flag + " is not a valid flag.");
+        }
+
+        if (!this.nextArgMayBeKey && this.nextArgMayBeValue) {
+            throw new InvalidCommandArgument(currentFlag.getKey() + " requires a value!");
+        }
+
+        return parsedFlags;
+    }
+
+    /**
+     * Parses a key.
+     *
+     * @param flag The flag to parse.
+     * @return True if the flag was parsed as a key, false otherwise.
+     */
+    private boolean parseKey(String flag) {
+        CommandFlag potentialFlag = flagGroup.getFlagByKey(flag);
+        if (potentialFlag == null) {
+            return false;
+        }
+
+        this.currentFlag = potentialFlag;
+
+        if (this.currentFlag instanceof CommandValueFlag) {
+            CommandValueFlag<?> valueFlag = (CommandValueFlag<?>) this.currentFlag;
+
+            if (valueFlag.isOptional()) {
+                parsedFlags.addFlagResult(valueFlag.getKey(), valueFlag.getDefaultValue());
+                this.nextArgMayBeKey = true;
+                this.nextArgMayBeValue = true;
+                return true;
+            }
+
+            this.nextArgMayBeKey = false;
+            this.nextArgMayBeValue = true;
+            return true;
+        }
+
+        parsedFlags.addFlagResult(this.currentFlag.getKey(), null);
+        this.nextArgMayBeKey = true;
+        this.nextArgMayBeValue = false;
+
+        return true;
+    }
+
+    /**
+     * Parses a value.
+     *
+     * @param flag The flag to parse.
+     * @return True if the flag was parsed as a value, false otherwise.
+     */
+    private boolean parseValue(String flag) {
+        if (this.currentFlag == null) {
+            throw new InvalidCommandArgument("Some flag logic error occurred at " + flag + "");
+        }
+        if (flagGroup.hasKey(flag)) {
+            throw new InvalidCommandArgument(currentFlag.getKey() + " requires a value!");
+        }
+
+        Object flagValue;
+        CommandValueFlag<?> valueFlag = (CommandValueFlag<?>) this.currentFlag;
+        flagValue = valueFlag.getContext() != null ? valueFlag.getContext().apply(flag) : flag;
+        parsedFlags.addFlagResult(valueFlag.getKey(), flagValue);
+
+        // After a value, the next argument must be a key
+        this.nextArgMayBeKey = true;
+        this.nextArgMayBeValue = false;
+        this.currentFlag = null;
+        return true;
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/CommandValueFlag.java

@@ -0,0 +1,172 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import java.util.Collection;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Represents a flag with a value.
+ *
+ * @param <T> The type of the value.
+ */
+public class CommandValueFlag<T> extends CommandFlag {
+    /**
+     * A builder for a flag.
+     *
+     * @param key  The key for the new flag.
+     * @param type The type of the value.
+     * @return The builder.
+     */
+    public static @NotNull <T> Builder<T, ?> builder(@NotNull String key, @NotNull Class<T> type) {
+        return new Builder<>(key, type);
+    }
+
+    private final Class<T> type;
+    private final boolean optional;
+    private final T defaultValue;
+    private final Function<String, T> context;
+    private final Supplier<Collection<String>> completion;
+
+    /**
+     * Creates a new flag.
+     *
+     * @param builder The builder.
+     */
+    protected CommandValueFlag(@NotNull Builder<T, ?> builder) {
+        super(builder);
+        type = builder.type;
+        optional = builder.optional;
+        defaultValue = builder.defaultValue;
+        context = builder.context;
+        completion = builder.completion;
+    }
+
+    /**
+     * Get the type of the value.
+     *
+     * @return The type of the value.
+     */
+    public @NotNull Class<T> getType() {
+        return type;
+    }
+
+    /**
+     * Check if it is optional for users to specify a value.
+     *
+     * @return True if the value is optional, false otherwise.
+     */
+    public boolean isOptional() {
+        return optional;
+    }
+
+    /**
+     * Get the default value. May be null.
+     *
+     * @return The default value.
+     */
+    public @Nullable T getDefaultValue() {
+        return defaultValue;
+    }
+
+    /**
+     * Get the context. May be null for {@link String} value type.
+     *
+     * @return The context.
+     */
+    public @Nullable Function<String, T> getContext() {
+        return context;
+    }
+
+    /**
+     * Get the completion. May be null.
+     *
+     * @return The completion.
+     */
+    public @Nullable Supplier<Collection<String>> getCompletion() {
+        return completion;
+    }
+
+    /**
+     * A builder for a flag.
+     *
+     * @param <T> The type of the value.
+     * @param <S> The type of the builder.
+     */
+    public static class Builder<T, S extends Builder<T, S>> extends CommandFlag.Builder<S> {
+        private final Class<T> type;
+        private boolean optional = false;
+        private T defaultValue = null;
+        private Function<String, T> context = null;
+        private Supplier<Collection<String>> completion = null;
+
+        /**
+         * Create a new builder.
+         *
+         * @param key  The key for the new flag.
+         * @param type The type of the value.
+         */
+        public Builder(@NotNull String key, @NotNull Class<T> type) {
+            super(key);
+            this.type = type;
+        }
+
+        /**
+         * Set the flag as optional for users to specify a value.
+         *
+         * @return The builder.
+         */
+        public @NotNull S optional() {
+            this.optional = true;
+            return (S) this;
+        }
+
+        /**
+         * Set the default value. Used if optional is true and user does not specify a value.
+         *
+         * @param defaultValue The default value.
+         * @return The builder.
+         */
+        public @NotNull S defaultValue(@NotNull T defaultValue) {
+            this.defaultValue = defaultValue;
+            return (S) this;
+        }
+
+        /**
+         * Set the context callback for parsing string into value type.
+         *
+         * @param context The context.
+         * @return The builder.
+         */
+        public @NotNull S context(@NotNull Function<String, T> context) {
+            this.context = context;
+            return (S) this;
+        }
+
+        /**
+         * Set the completion callback for autocomplete.
+         *
+         * @param completion The completion.
+         * @return The builder.
+         */
+        public @NotNull S completion(@NotNull Supplier<Collection<String>> completion) {
+            this.completion = completion;
+            return (S) this;
+        }
+
+        /**
+         * Build the flag.
+         *
+         * @return The flag.
+         */
+        @Override
+        public @NotNull CommandFlag build() {
+            if (context == null && !String.class.equals(type)) {
+                throw new IllegalStateException("Context is required for none-string value flags");
+            }
+            return new CommandValueFlag<>(this);
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/ParsedCommandFlags.java

@@ -0,0 +1,61 @@
+package com.onarandombox.MultiverseCore.commandtools.flags;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Object to contain the results of the flags present and its values.
+ */
+public class ParsedCommandFlags
+{
+    public static final ParsedCommandFlags EMPTY = new ParsedCommandFlags();
+
+    private final Map<String, Object> flagValues;
+
+    public ParsedCommandFlags() {
+        flagValues = new HashMap<>();
+    }
+
+    /**
+     * Add a flag result to the parsed flags.
+     *
+     * @param key   The key of the flag.
+     * @param value The value of the flag.
+     */
+    void addFlagResult(@NotNull String key, @Nullable Object value) {
+        flagValues.put(key, value);
+    }
+
+    /**
+     * Check if a flag is present.
+     *
+     * @param key The key of the flag.
+     * @return True if the flag is present, false otherwise.
+     */
+    public boolean hasFlag(@Nullable String key) {
+        return this.flagValues.containsKey(key);
+    }
+
+    public boolean hasFlagValue(@Nullable String key) {
+        return flagValue(key, Object.class) != null;
+    }
+
+    /**
+     * Get the value of a flag.
+     *
+     * @param key The key of the flag.
+     * @return The value of the flag, null if flag does not exist or no value.
+     */
+    public @Nullable <T> T flagValue(@Nullable String key, @NotNull Class<T> type) {
+        Object value = this.flagValues.get(key);
+        return (T) value;
+    }
+
+    public @NotNull <T> T flagValue(@Nullable String key, @NotNull T defaultValue, @NotNull Class<T> type) {
+        T value = flagValue(key, type);
+        return value != null ? value : defaultValue;
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/commandtools/flags/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * This package contains all the flags parsing classes.
+ *
+ */
+package com.onarandombox.MultiverseCore.commandtools.flags;

src/main/java/com/onarandombox/MultiverseCore/commandtools/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * This package contains the classes that manages command handling.
+ */
+package com.onarandombox.MultiverseCore.commandtools;

src/main/java/com/onarandombox/MultiverseCore/commandtools/queue/CommandQueueManager.java

@@ -7,18 +7,21 @@
 
 package com.onarandombox.MultiverseCore.commandtools.queue;
 
+import java.util.Map;
+import java.util.WeakHashMap;
+
 import com.dumptruckman.minecraft.util.Logging;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import jakarta.inject.Inject;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.block.data.type.CommandBlock;
 import org.bukkit.command.BlockCommandSender;
 import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.scheduler.BukkitTask;
 import org.jetbrains.annotations.NotNull;
-
-import java.util.Map;
-import java.util.WeakHashMap;
+import org.jvnet.hk2.annotations.Service;
 
 /**
  * <p>Manages the queuing of dangerous commands that require {@code /mv confirm} before executing.</p>
@@ -26,14 +29,16 @@ import java.util.WeakHashMap;
  * <p>Each sender can only have one command in queue at any given time. When a queued command is added
  * for a sender that already has a command in queue, it will replace the old queued command.</p>
  */
+@Service
 public class CommandQueueManager {
 
     private static final long TICKS_PER_SECOND = 20;
     private static final DummyCommandBlockSender COMMAND_BLOCK = new DummyCommandBlockSender();
 
-    private final MultiverseCore plugin;
+    private final Plugin plugin;
     private final Map<CommandSender, QueuedCommand> queuedCommandMap;
 
+    @Inject
     public CommandQueueManager(@NotNull MultiverseCore plugin) {
         this.plugin = plugin;
         this.queuedCommandMap = new WeakHashMap<>();
@@ -50,7 +55,7 @@ public class CommandQueueManager {
         // Since only one command is stored in queue per sender, we remove the old one.
         this.removeFromQueue(targetSender);
 
-        Logging.finer("Add new command to queue for sender %s.", targetSender);
+        Logging.finer("Add new command to queue for sender %s.", targetSender.getName());
         this.queuedCommandMap.put(targetSender, queuedCommand);
         queuedCommand.setExpireTask(runExpireLater(queuedCommand));
 
@@ -140,7 +145,7 @@ public class CommandQueueManager {
      */
     @NotNull
     private CommandSender parseSender(@NotNull CommandSender sender) {
-        Logging.fine(sender.getClass().getName());
+        Logging.finer("Sender is of class %s.", sender.getClass().getName());
         if (isCommandBlock(sender)) {
             Logging.finer("Is command block.");
             return COMMAND_BLOCK;

src/main/java/com/onarandombox/MultiverseCore/commandtools/queue/DummyCommandBlockSender.java

@@ -11,6 +11,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Set;
+import java.util.UUID;
 
 /**
  * Used by {@link CommandQueueManager}, so different commands block can be recognised as one.
@@ -27,6 +28,16 @@ class DummyCommandBlockSender implements CommandSender {
         throw new UnsupportedOperationException();
     }
 
+    @Override
+    public void sendMessage(@Nullable UUID uuid, @NotNull String s) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void sendMessage(@Nullable UUID uuid, @NotNull String[] strings) {
+        throw new UnsupportedOperationException();
+    }
+
     @Override
     public @NotNull Server getServer() {
         return Bukkit.getServer();
@@ -37,6 +48,12 @@ class DummyCommandBlockSender implements CommandSender {
         return "DummyCommandBlockSender";
     }
 
+    @NotNull
+    @Override
+    public Spigot spigot() {
+        throw new UnsupportedOperationException();
+    }
+
     @Override
     public boolean isPermissionSet(@NotNull String name) {
         throw new UnsupportedOperationException();

src/main/java/com/onarandombox/MultiverseCore/commandtools/queue/QueuedCommand.java

@@ -7,6 +7,7 @@
 
 package com.onarandombox.MultiverseCore.commandtools.queue;
 
+import co.aikar.commands.BukkitCommandIssuer;
 import org.bukkit.command.CommandSender;
 import org.bukkit.scheduler.BukkitTask;
 import org.jetbrains.annotations.NotNull;
@@ -26,6 +27,18 @@ public class QueuedCommand {
     private final int validDuration;
     private BukkitTask expireTask;
 
+    public QueuedCommand(BukkitCommandIssuer issuer, Runnable action) {
+        this(issuer.getIssuer(), action, DEFAULT_PROMPT_MESSAGE, DEFAULT_VALID_TIME);
+    }
+
+    public QueuedCommand(BukkitCommandIssuer issuer, Runnable action, String prompt) {
+        this(issuer.getIssuer(), action, prompt, DEFAULT_VALID_TIME);
+    }
+
+    public QueuedCommand(BukkitCommandIssuer issuer, Runnable action, int validDuration) {
+        this(issuer.getIssuer(), action, DEFAULT_PROMPT_MESSAGE, validDuration);
+    }
+
     public QueuedCommand(CommandSender sender, Runnable action) {
         this(sender, action, DEFAULT_PROMPT_MESSAGE, DEFAULT_VALID_TIME);
     }

src/main/java/com/onarandombox/MultiverseCore/config/MVCoreConfig.java

@@ -0,0 +1,262 @@
+package com.onarandombox.MultiverseCore.config;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MVConfig;
+import com.onarandombox.MultiverseCore.configuration.handle.CommentedYamlConfigHandle;
+import com.onarandombox.MultiverseCore.configuration.migration.BooleanMigratorAction;
+import com.onarandombox.MultiverseCore.configuration.migration.ConfigMigrator;
+import com.onarandombox.MultiverseCore.configuration.migration.IntegerMigratorAction;
+import com.onarandombox.MultiverseCore.configuration.migration.InvertBoolMigratorAction;
+import com.onarandombox.MultiverseCore.configuration.migration.MoveMigratorAction;
+import com.onarandombox.MultiverseCore.configuration.migration.VersionMigrator;
+import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
+import io.vavr.control.Try;
+import jakarta.inject.Inject;
+import org.bukkit.plugin.PluginManager;
+import org.jetbrains.annotations.NotNull;
+import org.jvnet.hk2.annotations.Service;
+
+@Service
+public class MVCoreConfig implements MVConfig {
+    public static final String CONFIG_FILENAME = "config.yml";
+    public static final double CONFIG_VERSION = 5.0;
+
+    private final Path configPath;
+    private final MVCoreConfigNodes configNodes;
+    private final CommentedYamlConfigHandle configHandle;
+
+    @Inject
+    MVCoreConfig(@NotNull MultiverseCore core, @NotNull PluginManager pluginManager) {
+        this.configPath = Path.of(core.getDataFolder().getPath(), CONFIG_FILENAME);
+        this.configNodes = new MVCoreConfigNodes(pluginManager);
+        this.configHandle = CommentedYamlConfigHandle.builder(configPath)
+                .logger(Logging.getLogger())
+                .nodes(configNodes.getNodes())
+                .migrator(ConfigMigrator.builder(configNodes.VERSION)
+                        .addVersionMigrator(VersionMigrator.builder(5.0)
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.enforceaccess", "world.enforce-access"))
+                                .addAction(BooleanMigratorAction.of("world.enforce-access"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.prefixchat", "messaging.enable-chat-prefix"))
+                                .addAction(BooleanMigratorAction.of("messaging.enable-chat-prefix"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.prefixchatformat", "messaging.chat-prefix-format"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.teleportintercept", "world.teleport-intercept"))
+                                .addAction(BooleanMigratorAction.of("world.teleport-intercept"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.firstspawnoverride", "spawn.first-spawn-override"))
+                                .addAction(BooleanMigratorAction.of("spawn.first-spawn-override"))
+                                //.addAction(MoveMigratorAction.of("multiverse-configuration.displaypermerrors", ""))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.globaldebug", "misc.global-debug"))
+                                .addAction(IntegerMigratorAction.of("misc.global-debug"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.silentstart", "misc.silent-start"))
+                                .addAction(BooleanMigratorAction.of("misc.silent-start"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.firstspawnworld", "spawn.first-spawn-location"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.defaultportalsearch", "portal.use-custom-portal-search"))
+                                .addAction(BooleanMigratorAction.of("portal.use-custom-portal-search"))
+                                .addAction(InvertBoolMigratorAction.of("portal.use-custom-portal-search"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.portalsearchradius", "portal.custom-portal-search-radius"))
+                                .addAction(IntegerMigratorAction.of("portal.custom-portal-search-radius"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.autopurge", "world.auto-purge-entities"))
+                                .addAction(BooleanMigratorAction.of("world.auto-purge-entities"))
+                                .addAction(MoveMigratorAction.of("multiverse-configuration.idonotwanttodonate", "misc.show-donation-message"))
+                                .addAction(BooleanMigratorAction.of("misc.show-donation-message"))
+                                .addAction(InvertBoolMigratorAction.of("misc.show-donation-message"))
+                                .build())
+                        .build())
+                .build();
+
+        load();
+        save();
+    }
+
+    private void migrateFromOldConfigFile() {
+        String content;
+        try {
+            content = Files.readString(configPath);
+        } catch (IOException e) {
+            return;
+        }
+        // Remove the old config section if it is still in the old ConfigurationSerializable.
+        content = content.replace("==: com.onarandombox.MultiverseCore.MultiverseCoreConfiguration", "");
+        try {
+            Files.writeString(configPath, content);
+        } catch (IOException e) {
+            // ignore
+        }
+    }
+
+    @Override
+    public boolean load() {
+        migrateFromOldConfigFile();
+        return configHandle.load();
+    }
+
+    @Override
+    public boolean isLoaded() {
+        return configHandle.isLoaded();
+    }
+
+    @Override
+    public boolean save() {
+        configHandle.save();
+        return true;
+    }
+
+    @Override
+    public NodeGroup getNodes() {
+        return configNodes.getNodes();
+    }
+
+    @Override
+    public Try<Object> getProperty(String name) {
+        return configHandle.get(name);
+    }
+
+    @Override
+    public Try<Void> setProperty(String name, Object value) {
+        return configHandle.set(name, value);
+    }
+
+    @Override
+    public void setEnforceAccess(boolean enforceAccess) {
+        configHandle.set(configNodes.ENFORCE_ACCESS, enforceAccess);
+    }
+
+    @Override
+    public boolean getEnforceAccess() {
+        return configHandle.get(configNodes.ENFORCE_ACCESS);
+    }
+
+    @Override
+    public void setEnforceGameMode(boolean enforceGameMode) {
+        configHandle.set(configNodes.ENFORCE_GAMEMODE, enforceGameMode);
+    }
+
+    @Override
+    public boolean getEnforceGameMode() {
+        return configHandle.get(configNodes.ENFORCE_GAMEMODE);
+    }
+
+    @Override
+    public void setAutoPurgeEntities(boolean autopurge) {
+        configHandle.set(configNodes.AUTO_PURGE_ENTITIES, autopurge);
+    }
+
+    @Override
+    public boolean isAutoPurgeEntities() {
+        return configHandle.get(configNodes.AUTO_PURGE_ENTITIES);
+    }
+
+    @Override
+    public void setTeleportIntercept(boolean teleportIntercept) {
+        configHandle.set(configNodes.TELEPORT_INTERCEPT, teleportIntercept);
+    }
+
+    @Override
+    public boolean getTeleportIntercept() {
+        return configHandle.get(configNodes.TELEPORT_INTERCEPT);
+    }
+
+    @Override
+    public void setFirstSpawnOverride(boolean firstSpawnOverride) {
+        configHandle.set(configNodes.FIRST_SPAWN_OVERRIDE, firstSpawnOverride);
+    }
+
+    @Override
+    public boolean getFirstSpawnOverride() {
+        return configHandle.get(configNodes.FIRST_SPAWN_OVERRIDE);
+    }
+
+    @Override
+    public void setFirstSpawnLocation(String firstSpawnWorld) {
+        configHandle.set(configNodes.FIRST_SPAWN_LOCATION, firstSpawnWorld);
+    }
+
+    @Override
+    public String getFirstSpawnLocation() {
+        return configHandle.get(configNodes.FIRST_SPAWN_LOCATION);
+    }
+
+    @Override
+    public void setUseCustomPortalSearch(boolean useDefaultPortalSearch) {
+        configHandle.set(configNodes.USE_CUSTOM_PORTAL_SEARCH, useDefaultPortalSearch);
+    }
+
+    @Override
+    public boolean isUsingCustomPortalSearch() {
+        return configHandle.get(configNodes.USE_CUSTOM_PORTAL_SEARCH);
+    }
+
+    @Override
+    public void setCustomPortalSearchRadius(int searchRadius) {
+        configHandle.set(configNodes.CUSTOM_PORTAL_SEARCH_RADIUS, searchRadius);
+    }
+
+    @Override
+    public int getCustomPortalSearchRadius() {
+        return configHandle.get(configNodes.CUSTOM_PORTAL_SEARCH_RADIUS);
+    }
+
+    @Override
+    public void setEnablePrefixChat(boolean prefixChat) {
+        configHandle.set(configNodes.ENABLE_CHAT_PREFIX, prefixChat);
+    }
+
+    @Override
+    public boolean isEnablePrefixChat() {
+        return configHandle.get(configNodes.ENABLE_CHAT_PREFIX);
+    }
+
+    @Override
+    public void setPrefixChatFormat(String prefixChatFormat) {
+        configHandle.set(configNodes.CHAT_PREFIX_FORMAT, prefixChatFormat);
+    }
+
+    @Override
+    public String getPrefixChatFormat() {
+        return configHandle.get(configNodes.CHAT_PREFIX_FORMAT);
+    }
+
+    @Override
+    public void setRegisterPapiHook(boolean registerPapiHook) {
+        configHandle.set(configNodes.REGISTER_PAPI_HOOK, registerPapiHook);
+    }
+
+    @Override
+    public boolean isRegisterPapiHook() {
+        return configHandle.get(configNodes.REGISTER_PAPI_HOOK);
+    }
+
+    @Override
+    public void setGlobalDebug(int globalDebug) {
+        configHandle.set(configNodes.GLOBAL_DEBUG, globalDebug);
+    }
+
+    @Override
+    public int getGlobalDebug() {
+        return configHandle.get(configNodes.GLOBAL_DEBUG);
+    }
+
+    @Override
+    public void setSilentStart(boolean silentStart) {
+        configHandle.set(configNodes.SILENT_START, silentStart);
+    }
+
+    @Override
+    public boolean getSilentStart() {
+        return configHandle.get(configNodes.SILENT_START);
+    }
+
+    @Override
+    public void setShowDonateMessage(boolean showDonateMessage) {
+        configHandle.set(configNodes.SHOW_DONATION_MESSAGE, showDonateMessage);
+    }
+
+    @Override
+    public boolean isShowingDonateMessage() {
+        return configHandle.get(configNodes.SHOW_DONATION_MESSAGE);
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/config/MVCoreConfigNodes.java

@@ -0,0 +1,216 @@
+package com.onarandombox.MultiverseCore.config;
+
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.configuration.node.ConfigHeaderNode;
+import com.onarandombox.MultiverseCore.configuration.node.ConfigNode;
+import com.onarandombox.MultiverseCore.configuration.node.Node;
+import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
+import com.onarandombox.MultiverseCore.event.MVDebugModeEvent;
+import com.onarandombox.MultiverseCore.exceptions.MultiverseException;
+import io.github.townyadvanced.commentedconfiguration.setting.CommentedNode;
+import io.vavr.control.Try;
+import org.bukkit.plugin.PluginManager;
+
+class MVCoreConfigNodes {
+
+    private final NodeGroup nodes = new NodeGroup();
+    private PluginManager pluginManager;
+
+    MVCoreConfigNodes(PluginManager pluginManager) {
+        this.pluginManager = pluginManager;
+    }
+
+    public NodeGroup getNodes() {
+        return nodes;
+    }
+
+    private <N extends Node> N node(N node) {
+        nodes.add(node);
+        return node;
+    }
+
+    private final ConfigHeaderNode HEADER = node(ConfigHeaderNode.builder("world") // TODO hacky way to get the header to the top of the file
+            .comment("####################################################################################################")
+            .comment("#                                                                                                  #")
+            .comment("#                    █▀▄▀█ █░█ █░░ ▀█▀ █ █░█ █▀▀ █▀█ █▀ █▀▀   █▀▀ █▀█ █▀█ █▀▀                      #")
+            .comment("#                    █░▀░█ █▄█ █▄▄ ░█░ █ ▀▄▀ ██▄ █▀▄ ▄█ ██▄   █▄▄ █▄█ █▀▄ ██▄                      #")
+            .comment("#                                                                                                  #")
+            .comment("#                                                                                                  #")
+            .comment("#    WIKI:        https://github.com/Multiverse/Multiverse-Core/wiki                               #")
+            .comment("#    DISCORD:     https://discord.gg/NZtfKky                                                       #")
+            .comment("#    BUG REPORTS: https://github.com/Multiverse/Multiverse-Core/issues                             #")
+            .comment("#                                                                                                  #")
+            .comment("#                                                                                                  #")
+            .comment("#    Each option in this file is documented and explained here:                                    #")
+            .comment("#     ==>  https://github.com/Multiverse/Multiverse-Core/wiki/config.yml                           #")
+            .comment("#                                                                                                  #")
+            .comment("#                                                                                                  #")
+            .comment("#    New options are added to this file automatically. If you manually made changes                #")
+            .comment("#    to this file while your server is running, please run `/mv reload` command.                   #")
+            .comment("#                                                                                                  #")
+            .comment("####################################################################################################")
+            .comment("")
+            .comment("")
+            .build());
+
+//    private final ConfigHeaderNode WORLD_HEADER = node(ConfigHeaderNode.builder("world")
+//            .comment("")
+//            .comment("")
+//            .build());
+
+    public final ConfigNode<Boolean> ENFORCE_ACCESS = node(ConfigNode.builder("world.enforce-access", Boolean.class)
+            .comment("This setting will prevent players from entering worlds they don't have access to.")
+            .comment("If this is set to false, players will be able to enter any world they want.")
+            .comment("If this is set to true, players will only be able to enter worlds they have")
+            .comment("the `mv.access.<worldname>` permission.")
+            .defaultValue(false)
+            .name("enforce-access")
+            .build());
+
+    public final ConfigNode<Boolean> ENFORCE_GAMEMODE = node(ConfigNode.builder("world.enforce-gamemode", Boolean.class)
+            .comment("")
+            .comment("Sets whether Multiverse will should enforce gamemode on world change.")
+            .comment("If enabled, players will be forced into the gamemode of the world they are entering, unless they have")
+            .comment("the `mv.bypass.gamemode.<worldname>` permission.")
+            .defaultValue(true)
+            .name("enforce-gamemode")
+            .build());
+
+    public final ConfigNode<Boolean> AUTO_PURGE_ENTITIES = node(ConfigNode.builder("world.auto-purge-entities", Boolean.class)
+            .comment("")
+            .comment("Sets whether Multiverse will purge mobs and entities with be automatically.")
+            .defaultValue(false)
+            .name("auto-purge-entities")
+            .build());
+
+    public final ConfigNode<Boolean> TELEPORT_INTERCEPT = node(ConfigNode.builder("world.teleport-intercept", Boolean.class)
+            .comment("")
+            .comment("If this is set to true, Multiverse will enforce access permissions for all teleportation,")
+            .comment("including teleportation from other plugins.")
+            .defaultValue(true)
+            .name("teleport-intercept")
+            .build());
+
+    private final ConfigHeaderNode SPAWN_HEADER = node(ConfigHeaderNode.builder("spawn")
+            .comment("")
+            .comment("")
+            .build());
+
+    public final ConfigNode<Boolean> FIRST_SPAWN_OVERRIDE = node(ConfigNode.builder("spawn.first-spawn-override", Boolean.class)
+            .comment("Sets whether Multiverse will override the first spawn location of a world.")
+            .comment("If enabled, Multiverse will set the first spawn location of a world to the spawn location of the world.")
+            .comment("If disabled, it will default to server.properties settings.")
+            .defaultValue(true)
+            .name("first-spawn-override")
+            .build());
+
+    public final ConfigNode<String> FIRST_SPAWN_LOCATION = node(ConfigNode.builder("spawn.first-spawn-location", String.class)
+            .comment("")
+            .comment("Sets the world that Multiverse will use as the location for players that first join the server.")
+            .comment("This only applies if first-spawn-override is set to true.")
+            .defaultValue("")
+            .name("first-spawn-location")
+            .build());
+
+    private final ConfigHeaderNode PORTAL_HEADER = node(ConfigHeaderNode.builder("portal")
+            .comment("")
+            .comment("")
+            .build());
+
+    public final ConfigNode<Boolean> USE_CUSTOM_PORTAL_SEARCH = node(ConfigNode.builder("portal.use-custom-portal-search", Boolean.class)
+            .comment("This config option defines whether or not Multiverse should interfere with's Bukkit's default portal search radius.")
+            .comment("Setting it to false would mean you want to simply let Bukkit decides the search radius itself.")
+            .defaultValue(false)
+            .name("use-custom-portal-search")
+            .build());
+
+    public final ConfigNode<Integer> CUSTOM_PORTAL_SEARCH_RADIUS = node(ConfigNode.builder("portal.custom-portal-search-radius", Integer.class)
+            .comment("")
+            .comment("This config option defines the search radius Multiverse should use when searching for a portal.")
+            .comment("This only applies if use-custom-portal-search is set to true.")
+            .defaultValue(128)
+            .name("custom-portal-search-radius")
+            .validator(value -> value < 0
+                    ? Try.failure(new MultiverseException("The value must be greater than or equal to 0.", null))
+                    : Try.success(null))
+            .build());
+
+    private final ConfigHeaderNode MESSAGING_HEADER = node(ConfigHeaderNode.builder("messaging")
+            .comment("")
+            .comment("")
+            .build());
+
+    public final ConfigNode<Boolean> ENABLE_CHAT_PREFIX = node(ConfigNode.builder("messaging.enable-chat-prefix", Boolean.class)
+            .comment("This config option defines whether or not Multiverse should prefix the chat with the world name.")
+            .comment("This only applies if use-custom-portal-search is set to true.")
+            .defaultValue(false)
+            .name("enable-chat-prefix")
+            .build());
+
+    public final ConfigNode<String> CHAT_PREFIX_FORMAT = node(ConfigNode.builder("messaging.chat-prefix-format", String.class)
+            .comment("")
+            .comment("This config option defines the format Multiverse should use when prefixing the chat with the world name.")
+            .comment("This only applies if enable-chat-prefix is set to true.")
+            .defaultValue("[%world%]%chat%")
+            .name("chat-prefix-format")
+            .build());
+
+    public final ConfigNode<Boolean> REGISTER_PAPI_HOOK = node(ConfigNode.builder("messaging.register-papi-hook", Boolean.class)
+            .comment("")
+            .comment("This config option defines whether or not Multiverse should register the PlaceholderAPI hook.")
+            .comment("This only applies if PlaceholderAPI is installed.")
+            .defaultValue(true)
+            .name("register-papi-hook")
+            .build());
+
+    private final ConfigHeaderNode MISC_HEADER = node(ConfigHeaderNode.builder("misc")
+            .comment("")
+            .comment("")
+            .build());
+
+    public final ConfigNode<Integer> GLOBAL_DEBUG = node(ConfigNode.builder("misc.global-debug", Integer.class)
+            .comment("This is our debug flag to help identify issues with Multiverse.")
+            .comment("If you are having issues with Multiverse, please set this to 3 and then post your log to pastebin.com")
+            .comment("Otherwise, there's no need to touch this. If not instructed by a wiki page or developer.")
+            .comment("  0 = Off, No debug messages")
+            .comment("  1 = fine")
+            .comment("  2 = finer")
+            .comment("  3 = finest")
+            .defaultValue(0)
+            .name("global-debug")
+            .validator(value -> (value < 0 || value > 3)
+                    ? Try.failure(new MultiverseException("Debug level must be between 0 and 3.", null))
+                    : Try.success(null))
+            .onSetValue((oldValue, newValue) -> {
+                int level = Logging.getDebugLevel();
+                Logging.setDebugLevel(newValue);
+                if (level != Logging.getDebugLevel()) {
+                    pluginManager.callEvent(new MVDebugModeEvent(level));
+                }
+            })
+            .build());
+
+    public final ConfigNode<Boolean> SILENT_START = node(ConfigNode.builder("misc.silent-start", Boolean.class)
+            .comment("")
+            .comment("If true, the startup console messages will no longer show.")
+            .defaultValue(false)
+            .name("silent-start")
+            .onSetValue((oldValue, newValue) -> Logging.setShowingConfig(!newValue))
+            .build());
+
+    public final ConfigNode<Boolean> SHOW_DONATION_MESSAGE = node(ConfigNode.builder("misc.show-donation-message", Boolean.class)
+            .comment("")
+            .comment("If you don't want to donate, you can set this to false and Multiverse will stop nagging you.")
+            .defaultValue(true)
+            .name("show-donation-message")
+            .build());
+
+    public final ConfigNode<Double> VERSION = node(ConfigNode.builder("version", Double.class)
+            .comment("")
+            .comment("")
+            .comment("This just signifies the version number so we can see what version of config you have.")
+            .comment("NEVER TOUCH THIS VALUE")
+            .defaultValue(MVCoreConfig.CONFIG_VERSION)
+            .name(null)
+            .build());
+}

src/main/java/com/onarandombox/MultiverseCore/configuration/handle/CommentedYamlConfigHandle.java

@@ -0,0 +1,93 @@
+package com.onarandombox.MultiverseCore.configuration.handle;
+
+import java.nio.file.Path;
+import java.util.logging.Logger;
+
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.configuration.migration.ConfigMigrator;
+import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
+import com.onarandombox.MultiverseCore.configuration.node.CommentedNode;
+import com.onarandombox.MultiverseCore.configuration.node.ValueNode;
+import io.github.townyadvanced.commentedconfiguration.CommentedConfiguration;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Configuration handle for commented YAML files.
+ */
+public class CommentedYamlConfigHandle extends FileConfigHandle<CommentedConfiguration> {
+
+    /**
+     * Creates a new builder for a {@link CommentedYamlConfigHandle}.
+     *
+     * @param configPath    The path to the config file.
+     * @return The builder.
+     */
+    public static @NotNull Builder builder(@NotNull Path configPath) {
+        return new Builder(configPath);
+    }
+
+    protected CommentedYamlConfigHandle(@NotNull Path configPath, @Nullable Logger logger, @Nullable NodeGroup nodes, @Nullable ConfigMigrator migrator) {
+        super(configPath, logger, nodes, migrator);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected boolean loadConfigObject() {
+        config = new CommentedConfiguration(configPath, logger);
+        return config.load();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void setUpNodes() {
+        if (nodes == null || nodes.isEmpty()) {
+            return;
+        }
+
+        CommentedConfiguration oldConfig = config;
+        this.config = new CommentedConfiguration(configPath, logger);
+
+        nodes.forEach(node -> {
+            if (node instanceof CommentedNode typedNode) {
+                if (typedNode.getComments().length > 0) {
+                    config.addComment(typedNode.getPath(), typedNode.getComments());
+                }
+            }
+            if (node instanceof ValueNode valueNode) {
+                set(valueNode, oldConfig.getObject(valueNode.getPath(), valueNode.getType(), valueNode.getDefaultValue())).onFailure(e -> {
+                    Logging.warning("Failed to set node " + valueNode.getPath() + " to " + valueNode.getDefaultValue());
+                    setDefault(valueNode);
+                });
+            }
+        });
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean save() {
+        config.save();
+        return true;
+    }
+
+    public static class Builder extends FileConfigHandle.Builder<CommentedConfiguration, Builder> {
+
+        protected Builder(@NotNull Path configPath) {
+            super(configPath);
+        }
+
+        /**
+         * {@inheritDoc}
+         */
+        @Override
+        public @NotNull CommentedYamlConfigHandle build() {
+            return new CommentedYamlConfigHandle(configPath, logger, nodes, migrator);
+        }
+    }
+}

src/main/java/com/onarandombox/MultiverseCore/configuration/handle/ConfigurationSectionHandle.java

@@ -0,0 +1,47 @@
+package com.onarandombox.MultiverseCore.configuration.handle;
+
+import com.onarandombox.MultiverseCore.configuration.migration.ConfigMigrator;
+import com.onarandombox.MultiverseCore.configuration.node.NodeGroup;
+import org.bukkit.configuration.ConfigurationSection;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.logging.Logger;
+
+/**
+ * Configuration handle for a single configuration section.
+ */
+public class ConfigurationSectionHandle extends GenericConfigHandle<ConfigurationSection> {
+    public static Builder<? extends Builder> builder(@NotNull ConfigurationSection configurationSection) {
+        return new Builder<>(configurationSection);
+    }
+
+    public ConfigurationSectionHandle(@NotNull ConfigurationSection configurationSection,
+                                      @Nullable Logger logger,
+                                      @Nullable NodeGroup nodes,
+                                      @Nullable ConfigMigrator migrator) {
+        super(logger, nodes, migrator);
+        this.config = configurationSection;
+    }
+
+    /**
+     * Builder for {@link ConfigurationSectionHandle}.
+     *
+     * @param <B>   The builder type.
+     */
+    public static class Builder<B extends Builder<B>> extends GenericConfigHandle.Builder<ConfigurationSection, B> {
+        private final ConfigurationSection configurationSection;
+
+        protected Builder(@NotNull ConfigurationSection configurationSection) {
+            this.configurationSection = configurationSection;
+        }
+
+        /**
+         * {@inheritDoc}
+         */
+        @Override
+        public @NotNull ConfigurationSectionHandle build() {
+            return new ConfigurationSectionHandle(configurationSection, logger, nodes, migrator);
+        }
+    }
+}