Prevent multiple sent

Fix compilation, ProtocolLib support and other quick issues

.gitignore

@@ -1,4 +1,9 @@
 .idea/
 src/test/
+bin/
 target/
+*.iml
 dependency-reduced-pom.xml
+.classpath
+.project
+.settings/

.travis.yml

@@ -1 +1,2 @@
-language: java
+language: java
+script: "mvn clean package -DskipTests"

README.md

@@ -1,4 +1,4 @@
-# ChatItem [![Build Status](https://travis-ci.org/dadus33/ChatItem.svg?branch=master)](https://travis-ci.org/dadus33/ChatItem)
+# ChatItem [![Build Status](https://travis-ci.org/dadus33/ChatItem.svg?branch=master)](https://travis-ci.org/dadus33/ChatItem) [![Help Chat](https://img.shields.io/badge/chat-on_discord-7289da.svg)](https://discord.gg/eQJbVJt)
 The official repository of the ChatItem Spigot/Bukkit plugin.
 # Building
 Building this is simple as we use Maven.

pom.xml

@@ -5,44 +5,59 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>me.dadus33</groupId>
-    <artifactId>ChatItem</artifactId>
-    <version>1.2.0</version>
+    <artifactId>chatitem</artifactId>
+    <version>1.4</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
     <repositories>
-        <repository>
-            <id>spigot-repo</id>
-            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
-        </repository>
         <repository>
             <id>dmulloy2-repo</id>
-            <url>http://repo.dmulloy2.net/content/groups/public/</url>
+            <url>http://repo.dmulloy2.net/nexus/repository/public/</url>
         </repository>
         <repository>
-            <id>Plugin Metrics</id>
-            <url>http://repo.mcstats.org/content/repositories/public</url>
+            <id>Bungeecord</id>
+            <url>https://repo.md-5.net/content/groups/public/</url>
         </repository>
+        <repository>
+            <id>spigot-repo</id>
+        	<url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
+        </repository>
+        <repository>
+            <id>sonatype</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
+        </repository>
+        <repository>
+            <id>viaversion-repo</id>
+            <url>https://repo.viaversion.com</url>
+        </repository>
+        <repository>
+		    <id>jitpack.io</id>
+		    <url>https://jitpack.io</url>
+		</repository>
     </repositories>
+
+
     <dependencies>
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.10-R0.1-SNAPSHOT</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.bukkit</groupId>
-            <artifactId>bukkit</artifactId>
-            <version>1.10-R0.1-SNAPSHOT</version>
+            <version>1.17-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
+	    <dependency>
+	        <groupId>org.bukkit</groupId>
+	        <artifactId>minecraft-server</artifactId>
+	        <version>1.7.10</version>
+	        <type>jar</type>
+	        <scope>provided</scope>
+	    </dependency>
         <dependency>
             <groupId>com.comphenix.protocol</groupId>
             <artifactId>ProtocolLib</artifactId>
-            <version>3.6.5</version>
+            <version>4.7.0</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
@@ -51,26 +66,45 @@
             <version>2.7</version>
             <scope>compile</scope>
         </dependency>
-        <dependency>
-            <groupId>org.mcstats.bukkit</groupId>
-            <artifactId>metrics-lite</artifactId>
-            <version>R8-SNAPSHOT</version>
-            <scope>compile</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.0</version>
+            <version>2.14.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.0</version>
+            <version>2.14.1</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>us.myles</groupId>
+            <artifactId>viaversion</artifactId>
+            <version>3.0.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.ProtocolSupport</groupId>
+            <artifactId>ProtocolSupport</artifactId>
+            <version>f34959c331</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.GeyserMC</groupId>
+            <artifactId>opennbt</artifactId>
+            <version>1.4</version>
+            <scope>compile</scope>
+        </dependency>
+	    <dependency>
+	        <groupId>io.netty</groupId>
+	        <artifactId>netty-all</artifactId>
+	        <version>4.1.53.Final</version>
+	        <scope>compile</scope>
+	    </dependency>
     </dependencies>
 
     <build>
+        <finalName>ChatItem-${project.version}</finalName>
         <directory>./target</directory>
         <resources>
             <resource>
@@ -90,8 +124,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.5.1</version>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                 </configuration>
             </plugin>
             <plugin>
@@ -105,7 +139,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>2.4.3</version>
+                <version>3.2.4</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -113,10 +147,19 @@
                             <goal>shade</goal>
                         </goals>
                         <configuration>
+                            <minimizeJar>true</minimizeJar>
                             <relocations>
+                                <relocation>
+                                    <pattern>org.bstats</pattern>
+                                    <shadedPattern>me.dadus33.libs.bstats</shadedPattern>
+                                </relocation>
                                 <relocation>
                                     <pattern>com.google.gson</pattern>
-                                    <shadedPattern>me.dadus33.gson</shadedPattern>
+                                    <shadedPattern>me.dadus33.libs.gson</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>com.github.GeyserMC</pattern>
+                                    <shadedPattern>me.dadus33.libs.opennbt</shadedPattern>
                                 </relocation>
                             </relocations>
                         </configuration>
@@ -126,4 +169,4 @@
         </plugins>
     </build>
 
-</project>
+</project>

src/main/java/me/dadus33/chatitem/ChatItem.java

@@ -1,52 +1,51 @@
 package me.dadus33.chatitem;
 
-import com.comphenix.protocol.AsynchronousManager;
-import com.comphenix.protocol.PacketType;
-import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.ProtocolManager;
-import com.comphenix.protocol.async.AsyncListenerHandler;
-import com.comphenix.protocol.events.ListenerPriority;
+import org.bukkit.Bukkit;
+import org.bukkit.Server;
+import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.ServicePriority;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import me.dadus33.chatitem.api.APIImplementation;
+import me.dadus33.chatitem.api.ChatItemAPI;
 import me.dadus33.chatitem.commands.CIReload;
 import me.dadus33.chatitem.filters.Log4jFilter;
 import me.dadus33.chatitem.json.JSONManipulator;
 import me.dadus33.chatitem.json.JSONManipulatorCurrent;
 import me.dadus33.chatitem.listeners.ChatEventListener;
-import me.dadus33.chatitem.listeners.ChatPacketListener;
-import me.dadus33.chatitem.utils.General;
+import me.dadus33.chatitem.listeners.ChatPacketListenerV2;
+import me.dadus33.chatitem.listeners.ChatPacketValidatorV2;
+import me.dadus33.chatitem.packets.ChatItemPacketManager;
+import me.dadus33.chatitem.playerversion.IPlayerVersion;
+import me.dadus33.chatitem.playerversion.hooks.DefaultVersionHook;
+import me.dadus33.chatitem.playerversion.hooks.ProtocolSupportHook;
+import me.dadus33.chatitem.playerversion.hooks.ViaVersionHook;
 import me.dadus33.chatitem.utils.Storage;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.Server;
-import org.bukkit.command.CommandSender;
-import org.bukkit.plugin.java.JavaPlugin;
-import org.mcstats.MetricsLite;
-
-import java.io.IOException;
-import java.util.logging.Level;
 
 public class ChatItem extends JavaPlugin {
 
-    public final static int CFG_VER = 4;
+    public final static int CFG_VER = 12;
     private static ChatItem instance;
     private ChatEventListener chatEventListener;
     private Log4jFilter filter;
     private Storage storage;
-    private ProtocolManager pm;
-    private ChatPacketListener listener;
-    private static JSONManipulator manip;
-    public static boolean post17 = false;
+    private static boolean baseComponentAvailable = true;
+    private IPlayerVersion playerVersionAdapter;
+    private ChatItemPacketManager packetManager;
 
     public static void reload(CommandSender sender) {
         ChatItem obj = getInstance();
-        obj.pm = ProtocolLibrary.getProtocolManager();
+        //obj.pm = ProtocolLibrary.getProtocolManager();
         obj.saveDefaultConfig();
         obj.reloadConfig();
         obj.storage = new Storage(obj.getConfig());
-        General.init(obj.storage);
-        General.checkConfigVersion();
-        obj.listener.setStorage(obj.storage);
+        //obj.packetListener.setStorage(obj.storage);
+        //obj.packetValidator.setStorage(obj.storage);
         obj.chatEventListener.setStorage(obj.storage);
         obj.filter.setStorage(obj.storage);
+        APIImplementation api = (APIImplementation) Bukkit.getServicesManager().getRegistration(ChatItemAPI.class).getProvider();
+        api.setStorage(obj.storage);
+        api.updateLogger();
         if (!obj.storage.RELOAD_MESSAGE.isEmpty())
             sender.sendMessage(obj.storage.RELOAD_MESSAGE);
     }
@@ -55,63 +54,94 @@ public class ChatItem extends JavaPlugin {
         return instance;
     }
 
+    @Override
     public void onEnable() {
+        //Save the instance (we're basically a singleton)
         instance = this;
-        pm = ProtocolLibrary.getProtocolManager();
+
+        //Load ProtocolManager
+        //pm = ProtocolLibrary.getProtocolManager();
+
+        //Load config
         saveDefaultConfig();
         storage = new Storage(getConfig());
-        General.init(storage);
-        General.checkConfigVersion();
-        listener = new ChatPacketListener(this, ListenerPriority.HIGHEST, storage, PacketType.Play.Server.CHAT);
-        AsynchronousManager am = pm.getAsynchronousManager();
-        AsyncListenerHandler packetListenerAsyncThread = am.registerAsyncHandler(listener);
-        packetListenerAsyncThread.start();
+
+        //Load API
+        APIImplementation api = new APIImplementation(storage);
+        Bukkit.getServicesManager().register(ChatItemAPI.class, api, this, ServicePriority.Highest);
+
+        //Packet listeners
+        packetManager = new ChatItemPacketManager(this);
+        packetManager.getPacketManager().addHandler(new ChatPacketValidatorV2(storage));
+        packetManager.getPacketManager().addHandler(new ChatPacketListenerV2(storage));
+        /*packetListener = new ChatPacketListener(this, ListenerPriority.LOW, storage, PacketType.Play.Server.CHAT);
+        packetValidator = new ChatPacketValidator(this, ListenerPriority.LOWEST, storage, PacketType.Play.Server.CHAT);
+        pm.addPacketListener(packetValidator);
+        pm.addPacketListener(packetListener);*/
+
+        if(Bukkit.getPluginManager().getPlugin("ViaVersion") != null){
+        	playerVersionAdapter = new ViaVersionHook();
+        } else if(Bukkit.getPluginManager().getPlugin("ProtocolSupport") != null){
+        	playerVersionAdapter = new ProtocolSupportHook();
+        } else {
+        	playerVersionAdapter = new DefaultVersionHook();
+        }
+
+        //We halt the use of this system for now, until we can solve the infamous getProtocolVersion issue
+        //Till then, users of both ViaVersion and ProtocolSupport should do just fine
+        /*if(!protocolSupport && !viaVersion) {
+            //We only implement our own way of getting protocol versions if we have no other choice
+            pm.addPacketListener(new HandshakeListener(this, ListenerPriority.MONITOR, PacketType.Handshake.Client.SET_PROTOCOL));
+        }*/
+
+        //Commands
         CIReload rld = new CIReload();
         Bukkit.getPluginCommand("cireload").setExecutor(rld);
+
+        //Bukkit API listeners
         chatEventListener = new ChatEventListener(storage);
         Bukkit.getPluginManager().registerEvents(chatEventListener, this);
-        if(isMc18OrLater()) {
-            post17 = true;
-        }
-        manip = new JSONManipulatorCurrent();
 
+        //Check for existence of BaseComponent class (only on spigot)
         try {
-            MetricsLite metrics = new MetricsLite(this);
-            metrics.start();
-        } catch (IOException e) {
-            getLogger().log(Level.WARNING, ChatColor.RED + "Couldn't start metrics!");
+            Class.forName("net.md_5.bungee.api.chat.BaseComponent");
+        } catch (ClassNotFoundException e) {
+            baseComponentAvailable = false;
         }
+
+        //Initialize Log4J filter (remove ugly console messages)
         filter = new Log4jFilter(storage);
     }
+    
+    public IPlayerVersion getPlayerVersionAdapter() {
+		return playerVersionAdapter;
+	}
+    
+    public ChatItemPacketManager getPacketManager() {
+		return packetManager;
+	}
 
-
-    public void onDisable() {
-        instance = null;
-        post17 = false;
-    }
-
-    private boolean isMc18OrLater(){
-        switch(getVersion(Bukkit.getServer())){
-            case "v1_8_R1": return true;
-            case "v1_8_R2": return true;
-            case "v1_8_R3": return true;
-            case "v1_9_R1": return true;
-            case "v1_9_R2": return true;
-            case "v1_10_R1": return true;
-            case "v1_10_R2": return true;
-            default: return false;
-        }
-    }
-
-
-    private static String getVersion(Server server) {
+    public static String getVersion(Server server) {
         final String packageName = server.getClass().getPackage().getName();
 
         return packageName.substring(packageName.lastIndexOf('.') + 1);
     }
 
+    public static boolean supportsChatComponentApi(){
+        return baseComponentAvailable;
+    }
 
     public static JSONManipulator getManipulator(){
-        return manip;
+        /*
+            We used to have 2 kinds of JSONManipulators because of my bad understanding of the 1.7 way of parsing JSON chat
+            The interface should however stay as there might be great changes in future versions in JSON parsing (most likely 1.13)
+         */
+        return new JSONManipulatorCurrent();
+        //We just return a new one whenever requested for the moment, should implement a cache of some sort some time though
+    }
+    
+    public static void debug(String msg) {
+    	if(getInstance().getConfig().getBoolean("debug", false))
+    		getInstance().getLogger().info(msg);
     }
 }

src/main/java/me/dadus33/chatitem/api/APIImplementation.java

@@ -0,0 +1,184 @@
+package me.dadus33.chatitem.api;
+
+
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.json.JSONManipulator;
+import me.dadus33.chatitem.json.Translator;
+import me.dadus33.chatitem.listeners.ChatPacketListenerV2;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.Storage;
+
+public class APIImplementation implements ChatItemAPI {
+
+    private final static String DEFAULT_JSON = "{\"extra\":[{\"text\":\"i\"}]}";
+    private final static String BASE_JSON = "{\"text\":\"\", \"extra\":[]}";
+    private final static List<String> DEFAULT_REPLACEMENT = Collections.singletonList("i");
+
+    private Storage c;
+
+    private Logger logger;
+
+    public APIImplementation(Storage st){
+        this.c = st;
+        this.logger = ChatItem.getInstance().getLogger();
+    }
+
+    public void updateLogger(){
+        this.logger = ChatItem.getInstance().getLogger();
+    }
+
+    public void setStorage(Storage newStorage){
+        this.c = newStorage;
+    }
+
+
+    @Override
+    public String getJSONFromItem(ItemStack item) {
+        JSONManipulator manipulator = ChatItem.getManipulator();
+        try {
+            return manipulator.parse(DEFAULT_JSON, DEFAULT_REPLACEMENT, item, ChatPacketListenerV2.styleItem(item, c), ProtocolVersion.getServerVersion().MAX_VER);
+        } catch (Exception e){
+            logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public String getJSONFromItem(ItemStack item, String customReplacement) {
+        JSONManipulator manipulator = ChatItem.getManipulator();
+        try {
+            return manipulator.parse(DEFAULT_JSON, DEFAULT_REPLACEMENT, item, customReplacement, ProtocolVersion.getServerVersion().MAX_VER);
+        } catch (Exception e){
+            logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public String getJSONFromItem(ItemStack item, Player client) {
+        JSONManipulator manipulator = ChatItem.getManipulator();
+        try {
+            return manipulator.parse(DEFAULT_JSON, DEFAULT_REPLACEMENT, item, ChatPacketListenerV2.styleItem(item, c), ProtocolVersion.getClientVersion(client));
+        } catch (Exception e){
+            logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public String getJSONFromItem(ItemStack item, String customReplacement, Player client) {
+        JSONManipulator manipulator = ChatItem.getManipulator();
+        try {
+            return manipulator.parse(DEFAULT_JSON, DEFAULT_REPLACEMENT, item, customReplacement, ProtocolVersion.getClientVersion(client));
+        } catch (Exception e){
+            logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    @Override
+    public String getJSONFromInlineItem(String text, ItemStack... items) {
+        JsonParser parser = new JsonParser();
+        JsonObject obj = parser.parse(BASE_JSON).getAsJsonObject();
+        obj.add("extra", Translator.toJson(text));
+        String main = obj.toString();
+        int version = ProtocolVersion.getServerVersion().MAX_VER;
+        for(int i = 0; i < items.length; ++i){
+            JSONManipulator manipulator = ChatItem.getManipulator();
+            ItemStack item = items[i];
+            String style = ChatPacketListenerV2.styleItem(item, c);
+            List<String> replacements = Collections.singletonList("%_"+i);
+            try {
+                main = manipulator.parse(main, replacements, item, style, version);
+            } catch (Exception e){
+                logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+                e.printStackTrace();
+                return null;
+            }
+        }
+        return main;
+    }
+
+    @Override
+    public String getJSONFromInlineItem(String text, String[] customReplacements, ItemStack... items) {
+        JsonObject wrapper = new JsonObject();
+        wrapper.add("extra", Translator.toJson(text));
+        String main = wrapper.toString();
+        int version = ProtocolVersion.getServerVersion().MAX_VER;
+        for(int i = 0; i < items.length; ++i){
+            JSONManipulator manipulator = ChatItem.getManipulator();
+            ItemStack item = items[i];
+            String style = Translator.toJson(customReplacements[i]).toString();
+            List<String> replacements = Collections.singletonList("%_"+i);
+            try {
+                main = manipulator.parse(main, replacements, item, style, version);
+            } catch (Exception e){
+                logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+                e.printStackTrace();
+                return null;
+            }
+        }
+        return main;
+    }
+
+    @Override
+    public String getJSONFromInlineItem(String text, Player client, ItemStack... items) {
+        JsonParser parser = new JsonParser();
+        JsonObject obj = parser.parse(BASE_JSON).getAsJsonObject();
+        obj.add("extra", Translator.toJson(text));
+        String main = obj.toString();
+        int version = ProtocolVersion.getClientVersion(client);
+        for(int i = 0; i < items.length; ++i){
+            JSONManipulator manipulator = ChatItem.getManipulator();
+            ItemStack item = items[i];
+            String style = ChatPacketListenerV2.styleItem(item, c);
+            List<String> replacements = Collections.singletonList("%_"+i);
+            try {
+                main = manipulator.parse(main, replacements, item, style, version);
+            } catch (Exception e){
+                logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+                e.printStackTrace();
+                return null;
+            }
+        }
+        return main;
+    }
+
+    @Override
+    public String getJSONFromInlineItem(String text, Player client, String[] customReplacements, ItemStack... items) {
+        JsonParser parser = new JsonParser();
+        JsonObject obj = parser.parse(BASE_JSON).getAsJsonObject();
+        obj.add("extra", Translator.toJson(text));
+        String main = obj.toString();
+        int version = ProtocolVersion.getClientVersion(client);
+        for(int i = 0; i < items.length; ++i){
+            JSONManipulator manipulator = ChatItem.getManipulator();
+            ItemStack item = items[i];
+            String style = Translator.toJson(customReplacements[i]).toString();
+            List<String> replacements = Collections.singletonList("%_"+i);
+            try {
+                main = manipulator.parse(main, replacements, item, style, version);
+            } catch (Exception e){
+                logger.log(Level.SEVERE, "An unexpected exception was caught while running an API method from ChatItem. Please contact the developer immediately, providing him with the following stack-trace:");
+                e.printStackTrace();
+                return null;
+            }
+        }
+        return main;
+    }
+}

src/main/java/me/dadus33/chatitem/api/ChatItemAPI.java

@@ -0,0 +1,22 @@
+package me.dadus33.chatitem.api;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+public interface ChatItemAPI {
+    String getJSONFromItem(ItemStack item);
+
+    String getJSONFromItem(ItemStack item, String customReplacement);
+
+    String getJSONFromItem(ItemStack item, Player client);
+
+    String getJSONFromItem(ItemStack item, String customReplacement, Player client);
+
+    String getJSONFromInlineItem(String text, ItemStack... items);
+
+    String getJSONFromInlineItem(String text, String[] customReplacements, ItemStack... items);
+
+    String getJSONFromInlineItem(String text, Player client, ItemStack... items);
+
+    String getJSONFromInlineItem(String text, Player client, String[] customReplacements, ItemStack... items);
+}

src/main/java/me/dadus33/chatitem/commands/CIReload.java

@@ -5,9 +5,7 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 
-/**
- * Created by Vlad on 30.09.2016.
- */
+
 public class CIReload implements CommandExecutor {
 
     @Override

src/main/java/me/dadus33/chatitem/filters/Log4jFilter.java

@@ -1,5 +1,6 @@
 package me.dadus33.chatitem.filters;
 
+import me.dadus33.chatitem.listeners.ChatEventListener;
 import me.dadus33.chatitem.utils.Storage;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
@@ -11,16 +12,12 @@ import org.apache.logging.log4j.message.Message;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
-import java.util.concurrent.CopyOnWriteArrayList;
-
 import static org.apache.logging.log4j.core.Filter.Result.NEUTRAL;
 
 
 public class Log4jFilter implements Filter {
 
-    private boolean stopped;
-    private final static CopyOnWriteArrayList<String> ls = new CopyOnWriteArrayList<>();
-    public Storage c;
+    private Storage c;
 
     public Log4jFilter(Storage st){
         c = st;
@@ -58,42 +55,21 @@ public class Log4jFilter implements Filter {
         return checkMessage(logEvent.getMessage().getFormattedMessage());
     }
 
-    @Override
-    public void start() {
-        stopped = false;
-    }
-
-    @Override
-    public void stop() {
-        stopped = true;
-    }
-
-    @Override
-    public boolean isStarted() {
-        return !this.stopped;
-    }
-
-    @Override
-    public boolean isStopped() {
-        return this.stopped;
-    }
-
     private Result checkMessage(String msg){
+        if(msg==null){
+            return Result.NEUTRAL;
+        }
         for(String placeholder : c.PLACEHOLDERS){
             if(msg.contains(placeholder)){
-                ls.add(msg);
                 for(Player p : Bukkit.getOnlinePlayers()){
-                    msg = msg.replaceAll("\\p{C}", "");
-                    if(msg.endsWith(p.getName()) || msg.lastIndexOf(p.getName())+2+p.getName().length()>=msg.length()){
+                    if(msg.contains(ChatEventListener.SEPARATOR +p.getName())){
                         return Result.DENY;
                     }
                 }
 
             }
         }
-
         return Result.NEUTRAL;
-
     }
 
     public void setStorage(Storage nst){

src/main/java/me/dadus33/chatitem/json/JSONManipulator.java

@@ -1,10 +1,13 @@
 package me.dadus33.chatitem.json;
 
+import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
 import java.lang.reflect.InvocationTargetException;
+import java.util.List;
 
 
 public interface JSONManipulator {
-    String parse(String json, String[] replacements, ItemStack item, String repl) throws InvocationTargetException, IllegalAccessException, InstantiationException;
+    String parse(String json, List<String> replacements, ItemStack item, String repl, int protocol) throws InvocationTargetException, IllegalAccessException, InstantiationException, NoSuchFieldException, NoSuchMethodException;
+    String parseEmpty(String json, List<String> replacements, String repl, List<String> tooltip, Player sender);
 }

src/main/java/me/dadus33/chatitem/json/JSONManipulatorCurrent.java

@@ -1,71 +1,138 @@
 package me.dadus33.chatitem.json;
 
-
+import com.github.steveice10.opennbt.tag.builtin.*;
 import com.google.gson.*;
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.utils.Item;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ProtocolVersion;
 import me.dadus33.chatitem.utils.Reflect;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
+import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-
+@SuppressWarnings("unchecked")
 public class JSONManipulatorCurrent implements JSONManipulator{
 
-    private static Class<?> craftItemStackClass = Reflect.getOBCClass("inventory.CraftItemStack");
-    private static Class<?> nmsItemStackClass = Reflect.getNMSClass("ItemStack");
-    private static Method asNMSCopy = Reflect.getMethod(craftItemStackClass, "asNMSCopy", ItemStack.class);
-    private static Class<?> nbtTagCompoundClass = Reflect.getNMSClass("NBTTagCompound");
-    private static Method saveNmsItemStackMethod = Reflect.getMethod(nmsItemStackClass, "save", nbtTagCompoundClass);
+    private static final Class<?> CRAFT_ITEM_STACK_CLASS = PacketUtils.getObcClass("inventory.CraftItemStack");
+    private static final Class<?> NBT_STRING = PacketUtils.getNmsClass("NBTTagString", "nbt.");
+    private static final Class<?> NBT_LIST = PacketUtils.getNmsClass("NBTTagList", "nbt.");
+    private static final Map<Type, Tag> TYPES_TO_OPEN_NBT_TAGS = new HashMap<>();
+    private static final List<Class<?>> NBT_BASE_CLASSES = new ArrayList<>();
+    private static final List<Field> NBT_BASE_DATA_FIELD = new ArrayList<>();
+    private static final Class<?> NMS_ITEM_STACK_CLASS = PacketUtils.getNmsClass("ItemStack", "world.item.");
+    private static final Method AS_NMS_COPY = Reflect.getMethod(CRAFT_ITEM_STACK_CLASS, "asNMSCopy", ItemStack.class);
+    private static final Class<?> NBT_TAG_COMPOUND = PacketUtils.getNmsClass("NBTTagCompound", "nbt.");
+    private static final Method SAVE_NMS_ITEM_STACK_METHOD = Reflect.getMethod(NMS_ITEM_STACK_CLASS, "save", NBT_TAG_COMPOUND);
+    private static final Field MAP = Reflect.getField(NBT_TAG_COMPOUND, "map", "x");
+    private static final Field LIST_FIELD = Reflect.getField(NBT_LIST, "list", "c");
 
-    private static String[] replaces;
-    private static String rgx;
-    private static JsonArray toUse;
-    private static JsonParser parser = new JsonParser();
+    //Tags to be ignored. Currently it only contains tags from PortableHorses, but feel free to submit a pull request to add tags from your plugins
+    private static final List<String> IGNORED = Arrays.asList("horsetag", "phorse", "iscnameviz", "cname");
+
+    private static final ConcurrentHashMap<Map.Entry<ProtocolVersion, ItemStack>, JsonObject> STACKS = new ConcurrentHashMap<>();
+
+    static{
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagByte", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagByteArray", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagDouble", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagFloat", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagInt", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagIntArray", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagLong", "nbt."));
+        NBT_BASE_CLASSES.add(PacketUtils.getNmsClass("NBTTagShort", "nbt."));
+
+        for (Class<?> NBT_BASE_CLASS : NBT_BASE_CLASSES) {
+            NBT_BASE_DATA_FIELD.add(Reflect.getField(NBT_BASE_CLASS, "data", "c", "x"));
+        }
+
+        TYPES_TO_OPEN_NBT_TAGS.put(Byte.class, new ByteTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Byte[].class, new ByteArrayTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Double.class, new DoubleTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Float.class, new FloatTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Integer.class, new IntTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Integer[].class, new IntArrayTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Long.class, new LongTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(Short.class, new ShortTag(""));
+        //Add the primitive types too, just in case
+        TYPES_TO_OPEN_NBT_TAGS.put(byte.class, new ByteTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(byte[].class, new ByteArrayTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(double.class, new DoubleTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(float.class, new FloatTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(int.class, new IntTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(int[].class, new IntArrayTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(long.class, new LongTag(""));
+        TYPES_TO_OPEN_NBT_TAGS.put(short.class, new ShortTag(""));
+
+    }
+
+    private List<String> replaces;
+    private String rgx;
+    private ProtocolVersion protocolVersion;
+    private JsonObject itemTooltip;
+    private JsonArray classicTooltip;
+    private final JsonParser PARSER = new JsonParser();
 
 
-    public String parse(String json, String[] replacements, ItemStack item, String repl) throws InvocationTargetException, IllegalAccessException, InstantiationException {
-        JsonObject obj = parser.parse(json).getAsJsonObject();
+    public String parse(String json, List<String> replacements, ItemStack item, String replacement, int protocol) throws InvocationTargetException, IllegalAccessException, InstantiationException, NoSuchFieldException, NoSuchMethodException {
+        JsonObject obj = PARSER.parse(json).getAsJsonObject();
         JsonArray array = obj.getAsJsonArray("extra");
         replaces = replacements;
         String regex = "";
-        for (int i = 0; i < replacements.length; ++i) {
-            if (replacements.length == 1) {
-                regex = Pattern.quote(replacements[0]);
+        for (int i = 0; i < replacements.size(); ++i) {
+            if (replacements.size() == 1) {
+                regex = Pattern.quote(replacements.get(0));
                 break;
             }
-            if (i == 0 || i + 1 == replacements.length) {
+            if (i == 0 || i + 1 == replacements.size()) {
                 if (i == 0) {
-                    regex = "(" + Pattern.quote(replacements[i]);
+                    regex = "(" + Pattern.quote(replacements.get(i));
                 } else {
-                    regex = regex.concat("|").concat(Pattern.quote(replacements[i])).concat(")");
+                    regex = regex.concat("|").concat(Pattern.quote(replacements.get(i))).concat(")");
                 }
                 continue;
             }
-            regex = regex.concat("|").concat(Pattern.quote(replacements[i]));
+            regex = regex.concat("|").concat(Pattern.quote(replacements.get(i)));
         }
         rgx = regex;
         JsonArray rep = new JsonArray();
-        repl = escapeBackslash(repl);
-        JsonArray use = parser.parse(Translator.toJSON(repl)).getAsJsonArray();
+        final AbstractMap.SimpleEntry<ProtocolVersion, ItemStack> p = new AbstractMap.SimpleEntry<>(protocolVersion = ProtocolVersion.getVersion(protocol), item);
 
-        JsonObject hover = parser.parse("{\"action\":\"show_item\", \"value\": \"\"}").getAsJsonObject();
-        Object nmsStack = asNMSCopy.invoke(null, item);
-        Object tag = nbtTagCompoundClass.newInstance();
-        tag = saveNmsItemStackMethod.invoke(nmsStack, tag);
-        String jsonRep = escapeBackslash(tag.toString());
-        hover.addProperty("value", jsonRep);
-        for (JsonElement ob : use)
-            ob.getAsJsonObject().add("hoverEvent", hover);
+        if ((itemTooltip = STACKS.get(p)) == null) {
+            JsonArray use = Translator.toJson(replacement); //We get the json representation of the old color formatting method
 
-        toUse = use;
+            JsonObject hover = PARSER.parse("{\"action\":\"show_item\", \"value\": \"\"}").getAsJsonObject(); //There's no public clone method for JSONObjects so we need to parse them every time
+
+            String jsonRep = stringifyItem(item); //Get the JSON representation of the item (well, not really JSON, but rather a string representation of NBT data)
+            hover.addProperty("value", jsonRep);
+
+            JsonObject wrapper = new JsonObject(); //Create a wrapper object for the whole array
+            wrapper.addProperty("text", ""); //The text field is compulsory, even if it's empty
+            wrapper.add("extra", use);
+            wrapper.add("hoverEvent", hover);
+
+            itemTooltip = wrapper; //Save the tooltip for later use when we encounter a placeholder
+            STACKS.put(p, itemTooltip); //Save it in the cache too so when parsing other packets with the same item (and client version) we no longer have to create it again
+            Bukkit.getScheduler().runTaskLaterAsynchronously(ChatItem.getInstance(), () ->
+                    STACKS.remove(p)
+            , 100L); //We remove it later when no longer needed to save memory
+        }
 
         for (int i = 0; i < array.size(); ++i) {
             if (array.get(i).isJsonObject()){
                 JsonObject o = array.get(i).getAsJsonObject();
                 boolean inside = false;
-                for (String replacement : replacements)
-                    if (o.toString().contains(replacement)) {
+                for (String replace : replacements)
+                    if (o.toString().contains(replace)) {
                         if (inside) {
                             break;
                         }
@@ -76,8 +143,12 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                     JsonElement el = o.get("extra");
                     if (el != null) {
                         JsonArray jar = el.getAsJsonArray();
-                        jar = parseArray(jar);
-                        o.add("extra", jar);
+                        if(jar.size()!=0) {
+                            jar = parseArray(jar);
+                            o.add("extra", jar);
+                        }else{
+                            o.remove("extra");
+                        }
                     }
                     continue;
                 } else {
@@ -85,8 +156,12 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                         JsonElement el = o.get("extra");
                         if (el != null) {
                             JsonArray jar = el.getAsJsonArray();
-                            jar = parseArray(jar);
-                            o.add("extra", jar);
+                            if(jar.size()!=0) {
+                                jar = parseArray(jar);
+                                o.add("extra", jar);
+                            }else{
+                                o.remove("extra");
+                            }
                         }
                     }
                 }
@@ -113,7 +188,177 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                         boolean endDot = (j == splits.length - 1) && isLast;
                         if (!splits[j].isEmpty() && !endDot) {
                             String st = o.toString();
-                            JsonObject fix = parser.parse(st).getAsJsonObject();
+                            JsonObject fix = PARSER.parse(st).getAsJsonObject();
+                            fix.addProperty("text", splits[j]);
+                            rep.add(fix);
+                        }
+                        if (j != splits.length - 1) {
+                            rep.add(itemTooltip);
+                        }
+                    }
+                if (!fnd) {
+                    rep.add(o);
+                }
+            }else{
+                if(array.get(i).isJsonNull()){
+                    continue;
+                }else{
+                    if(array.get(i).isJsonArray()){
+                        JsonArray jar = array.get(i).getAsJsonArray();
+                        if(jar.size()!=0) {
+                            jar = parseArray(array.get(i).getAsJsonArray());
+                            rep.set(i, jar);
+                        }
+                    }else{
+
+
+                        String msg = array.get(i).getAsString();
+                        boolean isLast = false;
+                        boolean done = false;
+                        boolean fnd;
+                        String[] splits;
+                        for (String repls : replacements) {
+                            if (done) {
+                                break;
+                            }
+                            isLast = msg.endsWith(repls);
+                            if (isLast) {
+                                done = true;
+                                msg = msg.concat(".");
+                            }
+                        }
+                        splits = msg.split(regex);
+                        fnd = splits.length != 1;
+                        if (fnd)
+                            for (int j = 0; j < splits.length; ++j) {
+                                boolean endDot = (j == splits.length - 1) && isLast;
+                                if (!splits[j].isEmpty() && !endDot) {
+                                    JsonElement fix = new JsonPrimitive(splits[j]);
+                                    rep.add(fix);
+                                }
+                                if (j != splits.length - 1) {
+                                    rep.add(itemTooltip);
+                                }
+                            }
+                        if (!fnd) {
+                            rep.add(array.get(i));
+                        }
+                    }
+                }
+            }
+
+        }
+        obj.add("extra", rep);
+        if(!obj.has("text")){
+            obj.addProperty("text", "");
+        }
+        return obj.toString();
+    }
+
+    @Override
+    public String parseEmpty(String json, List<String> replacements, String repl, List<String> tooltip, Player sender) {
+        JsonObject obj = PARSER.parse(json).getAsJsonObject();
+        JsonArray array = obj.getAsJsonArray("extra");
+        replaces = replacements;
+        String regex = "";
+        for (int i = 0; i < replacements.size(); ++i) {
+            if (replacements.size() == 1) {
+                regex = Pattern.quote(replacements.get(0));
+                break;
+            }
+            if (i == 0 || i + 1 == replacements.size()) {
+                if (i == 0) {
+                    regex = "(" + Pattern.quote(replacements.get(i));
+                } else {
+                    regex = regex.concat("|").concat(Pattern.quote(replacements.get(i))).concat(")");
+                }
+                continue;
+            }
+            regex = regex.concat("|").concat(Pattern.quote(replacements.get(i)));
+        }
+        rgx = regex;
+        JsonArray rep = new JsonArray();
+        JsonArray use = Translator.toJson(repl.replace("{name}", sender.getName()).replace("{display-name}", sender.getDisplayName()));
+        JsonObject hover = PARSER.parse("{\"action\":\"show_text\", \"value\": \"\"}").getAsJsonObject();
+
+        StringBuilder oneLineTooltip = new StringBuilder("");
+        int index = 0;
+        for(String m : tooltip){
+           oneLineTooltip.append(m.replace("{name}", sender.getName()).replace("{display-name}", sender.getDisplayName()));
+           ++index;
+           if(index!=tooltip.size()){
+               oneLineTooltip.append('\n');
+           }
+        }
+
+        hover.add("value", new JsonPrimitive(oneLineTooltip.toString()));
+        for (JsonElement ob : use)
+            ob.getAsJsonObject().add("hoverEvent", hover);
+
+        classicTooltip = use;
+
+        for (int i = 0; i < array.size(); ++i) {
+            if (array.get(i).isJsonObject()){
+                JsonObject o = array.get(i).getAsJsonObject();
+                boolean inside = false;
+                for (String replace : replacements)
+                    if (o.toString().contains(replace)) {
+                        if (inside) {
+                            break;
+                        }
+                        inside = true;
+                    }
+                JsonElement text = o.get("text");
+                if (text == null) {
+                    JsonElement el = o.get("extra");
+                    if (el != null) {
+                        JsonArray jar = el.getAsJsonArray();
+                        if(jar.size()!=0) {
+                            jar = parseNoItemArray(jar);
+                            o.add("extra", jar);
+                        }else{
+                            o.remove("extra");
+                        }
+                    }
+                    continue;
+                } else {
+                    if (text.getAsString().isEmpty()) {
+                        JsonElement el = o.get("extra");
+                        if (el != null) {
+                            JsonArray jar = el.getAsJsonArray();
+                            if(jar.size()!=0) {
+                                jar = parseNoItemArray(jar);
+                                o.add("extra", jar);
+                            }else{
+                                o.remove("extra");
+                            }
+                        }
+                    }
+                }
+
+                String msg = text.getAsString();
+                boolean isLast = false;
+                boolean done = false;
+                boolean fnd;
+                String[] splits;
+                for (String repls : replacements) {
+                    if (done) {
+                        break;
+                    }
+                    isLast = msg.endsWith(repls);
+                    if (isLast) {
+                        done = true;
+                        msg = msg.concat(".");
+                    }
+                }
+                splits = msg.split(regex);
+                fnd = splits.length != 1;
+                if (fnd)
+                    for (int j = 0; j < splits.length; ++j) {
+                        boolean endDot = (j == splits.length - 1) && isLast;
+                        if (!splits[j].isEmpty() && !endDot) {
+                            String st = o.toString();
+                            JsonObject fix = PARSER.parse(st).getAsJsonObject();
                             fix.addProperty("text", splits[j]);
                             rep.add(fix);
                         }
@@ -129,8 +374,11 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                     continue;
                 }else{
                     if(array.get(i).isJsonArray()){
-                        JsonArray jar = parseArray(array.get(i).getAsJsonArray());
-                        rep.set(i, jar);
+                        JsonArray jar = array.get(i).getAsJsonArray();
+                        if(jar.size()!=0) {
+                            jar = parseNoItemArray(array.get(i).getAsJsonArray());
+                            rep.set(i, jar);
+                        }
                     }else{
 
 
@@ -174,11 +422,9 @@ public class JSONManipulatorCurrent implements JSONManipulator{
         }
         obj.add("extra", rep);
         return obj.toString();
-
     }
 
-
-    private static JsonArray parseArray(JsonArray arr) {
+    private JsonArray parseNoItemArray(JsonArray arr) {
         JsonArray replacer = new JsonArray();
         for (int i = 0; i < arr.size(); ++i) {
             if (arr.get(i).isJsonObject()){
@@ -192,6 +438,7 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                         inside = true;
                     }
                 if (!inside) { //the placeholder we're looking for is not inside this element, so we continue searching
+                    replacer.add(o);
                     continue;
                 }
                 JsonElement text = o.get("text");
@@ -204,8 +451,12 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                         continue;
                     }
                     JsonArray jar = el.getAsJsonArray();
-                    jar = parseArray(jar);
-                    o.add("extra", jar);
+                    if(jar.size()!=0) {
+                        jar = parseNoItemArray(jar);
+                        o.add("extra", jar);
+                    }else{
+                        o.remove("extra");
+                    }
                 }
 
                 String msg = text.getAsString();
@@ -230,12 +481,12 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                         boolean endDot = (j == splits.length - 1) && isLast;
                         if (!splits[j].isEmpty() && !endDot) {
                             String st = o.toString();
-                            JsonObject fix = parser.parse(st).getAsJsonObject();
+                            JsonObject fix = PARSER.parse(st).getAsJsonObject();
                             fix.addProperty("text", splits[j]);
                             replacer.add(fix);
                         }
                         if (j != splits.length - 1) {
-                            replacer.addAll(toUse);
+                            replacer.addAll(classicTooltip);
                         }
                     }
                 if (!fnd) {
@@ -246,8 +497,11 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                     continue;
                 }else{
                     if(arr.get(i).isJsonArray()){
-                        JsonArray jar = parseArray(arr.get(i).getAsJsonArray());
-                        replacer.set(i, jar);
+                        JsonArray jar = arr.get(i).getAsJsonArray();
+                        if(jar.size()!=0) {
+                            jar = parseNoItemArray(arr.get(i).getAsJsonArray());
+                            replacer.set(i, jar);
+                        }
                     }else{
                         String msg = arr.get(i).getAsString();
                         boolean isLast = false;
@@ -274,7 +528,7 @@ public class JSONManipulatorCurrent implements JSONManipulator{
                                     replacer.add(fix);
                                 }
                                 if (j != splits.length - 1) {
-                                    replacer.addAll(toUse);
+                                    replacer.addAll(classicTooltip);
                                 }
                             }
                         if (!fnd) {
@@ -288,10 +542,361 @@ public class JSONManipulatorCurrent implements JSONManipulator{
         return replacer;
     }
 
+    private JsonArray parseArray(JsonArray arr) {
+        JsonArray replacer = new JsonArray();
+        for (int i = 0; i < arr.size(); ++i) {
+            if (arr.get(i).isJsonObject()){
+                JsonObject o = arr.get(i).getAsJsonObject();
+                boolean inside = false;
+                for (String replacement : replaces)
+                    if (o.toString().contains(replacement)) {
+                        if (inside) {
+                            break;
+                        }
+                        inside = true;
+                    }
+                if (!inside) { //the placeholder we're looking for is not inside this element, so we continue searching
+                    replacer.add(o);
+                    continue;
+                }
+                JsonElement text = o.get("text");
+                if (text == null) {
+                    continue;
+                }
+                if (text.getAsString().isEmpty()) {
+                    JsonElement el = o.get("extra");
+                    if (el == null) {
+                        continue;
+                    }
+                    JsonArray jar = el.getAsJsonArray();
+                    if(jar.size()!=0) {
+                        jar = parseArray(jar);
+                        o.add("extra", jar);
+                    }else{
+                        o.remove("extra");
+                    }
+                }
 
-    private static String escapeBackslash(String json){
-        json = json.replace("\\", "\\\\");
-        return json;
+                String msg = text.getAsString();
+                boolean isLast = false;
+                boolean done = false;
+                boolean fnd;
+                String[] splits;
+                for (String repls : replaces) {
+                    if (done) {
+                        break;
+                    }
+                    isLast = msg.endsWith(repls);
+                    if (isLast) {
+                        done = true;
+                        msg = msg.concat(".");
+                    }
+                }
+                splits = msg.split(rgx);
+                fnd = splits.length != 1;
+                if (fnd)
+                    for (int j = 0; j < splits.length; ++j) {
+                        boolean endDot = (j == splits.length - 1) && isLast;
+                        if (!splits[j].isEmpty() && !endDot) {
+                            String st = o.toString();
+                            JsonObject fix = PARSER.parse(st).getAsJsonObject();
+                            fix.addProperty("text", splits[j]);
+                            replacer.add(fix);
+                        }
+                        if (j != splits.length - 1) {
+                            replacer.add(itemTooltip);
+                        }
+                    }
+                if (!fnd) {
+                    replacer.add(o);
+                }
+            }else{
+                if(arr.get(i).isJsonNull()){
+                    continue;
+                }else{
+                    if(arr.get(i).isJsonArray()){
+                        JsonArray jar = arr.get(i).getAsJsonArray();
+                        if(jar.size()!=0) {
+                            jar = parseArray(arr.get(i).getAsJsonArray());
+                            replacer.set(i, jar);
+                        }
+                    }else{
+                        String msg = arr.get(i).getAsString();
+                        boolean isLast = false;
+                        boolean done = false;
+                        boolean fnd;
+                        String[] splits;
+                        for (String repls : replaces) {
+                            if (done) {
+                                break;
+                            }
+                            isLast = msg.endsWith(repls);
+                            if (isLast) {
+                                done = true;
+                                msg = msg.concat(".");
+                            }
+                        }
+                        splits = msg.split(rgx);
+                        fnd = splits.length != 1;
+                        if (fnd)
+                            for (int j = 0; j < splits.length; ++j) {
+                                boolean endDot = (j == splits.length - 1) && isLast;
+                                if (!splits[j].isEmpty() && !endDot) {
+                                    JsonElement fix = new JsonPrimitive(splits[j]);
+                                    replacer.add(fix);
+                                }
+                                if (j != splits.length - 1) {
+                                    replacer.add(itemTooltip);
+                                }
+                            }
+                        if (!fnd) {
+                            replacer.add(arr.get(i));
+                        }
+                    }
+                }
+            }
+
+        }
+        return replacer;
+    }
+
+	@SuppressWarnings("deprecation")
+	private Item toItem(ItemStack is) throws IllegalAccessException, InstantiationException, InvocationTargetException, NoSuchMethodException {
+        CompoundTag tag = new CompoundTag("tag");
+
+        Object nmsStack = AS_NMS_COPY.invoke(null, is);
+        Object nmsTag = NBT_TAG_COMPOUND.newInstance();
+        SAVE_NMS_ITEM_STACK_METHOD.invoke(nmsStack, nmsTag);
+        Map<String, Object> nmsMap = (Map<String, Object>) MAP.get(nmsTag);
+        String id = nmsMap.get("id").toString().replace("\"", "");
+        Object realTag = nmsMap.get("tag");
+        if(NBT_TAG_COMPOUND.isInstance(realTag)) {  //We need to make sure this is indeed an NBTTagCompound
+            Map<String, Object> realMap = (Map<String, Object>) MAP.get(realTag);
+            Set<Map.Entry<String, Object>> entrySet = realMap.entrySet();
+            Map<String, Tag> map = tag.getValue();
+            for (Map.Entry<String, Object> entry : entrySet) {
+                map.put(entry.getKey(), toOpenTag(entry.getValue(), entry.getKey()));
+            }
+            tag.setValue(map);
+        }
+
+        Item item = new Item();
+        item.setAmount((byte)is.getAmount());
+        item.setData(is.getDurability());
+        item.setId(id);
+        item.setTag(tag);
+        return item;
+    }
+
+    private Tag toOpenTag(Object nmsTag, String name) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException, InstantiationException {
+        if(NBT_TAG_COMPOUND.isInstance(nmsTag)) {
+            CompoundTag tag = new CompoundTag(name);
+            Map<String, Tag> tagMap = tag.getValue();
+
+            Map<String, Object> nmsMap = (Map<String, Object>) MAP.get(nmsTag);
+            Set<Map.Entry<String, Object>> entrySet = nmsMap.entrySet();
+            for (Map.Entry<String, Object> entry : entrySet) {
+                Tag value = toOpenTag(entry.getValue(), entry.getKey());
+                tagMap.put(entry.getKey(), value);
+            }
+            tag.setValue(tagMap);
+            return tag;
+        } else {
+            //Strings are a special case as they need proper escaping
+            if(NBT_STRING.isInstance(nmsTag)) {
+                String toString = nmsTag.toString();
+                if (toString.startsWith("\"") && toString.endsWith("\"")) {
+                    toString = toString.substring(1, toString.length() - 1);
+                    //toString = escapeSpecials(toString);
+                    return new StringTag(name, toString);
+                }
+            }
+
+            //NBTTag Lists are also special, as they are a sort of compound themselves and need to be parsed recursively
+            if(NBT_LIST.isInstance(nmsTag)){
+                List<Object> nmsNBTBaseList = (List<Object>) LIST_FIELD.get(nmsTag);
+                List<Tag> list = new ArrayList<>();
+                int i = 0;
+                for(Object baseTag : nmsNBTBaseList){
+                    list.add(toOpenTag(baseTag, String.valueOf(i)));
+                    ++i;
+                }
+                return new ListTag(name, list);
+            }
+
+            for(int i = 0; i < NBT_BASE_CLASSES.size(); ++i){
+                Class<?> c = NBT_BASE_CLASSES.get(i);
+                if(c.isInstance(nmsTag)){
+                    Object value = NBT_BASE_DATA_FIELD.get(i).get(nmsTag);
+
+                    Tag t = TYPES_TO_OPEN_NBT_TAGS.get(value.getClass()).getClass().getConstructor(String.class).newInstance(name);
+
+                    if(t instanceof ByteTag){
+                        ((ByteTag)t).setValue((byte)value);
+                        ((ByteTag)t).setValue((byte)value);
+                        return t;
+                    }
+                    if(t instanceof ByteArrayTag){
+                        ((ByteArrayTag)t).setValue((byte[])value);
+                        return t;
+                    }
+                    if(t instanceof DoubleTag){
+                        ((DoubleTag)t).setValue((double)value);
+                        return t;
+                    }
+                    if(t instanceof FloatTag){
+                        ((FloatTag)t).setValue((float)value);
+                        return t;
+                    }
+                    if(t instanceof IntTag){
+                        ((IntTag)t).setValue((int)value);
+                        return t;
+                    }
+                    if(t instanceof IntArrayTag){
+                        ((IntArrayTag)t).setValue((int[])value);
+                        return t;
+                    }
+                    if(t instanceof LongTag){
+                        ((LongTag)t).setValue((long)value);
+                        return t;
+                    }
+                    if(t instanceof ShortTag){
+                        ((ShortTag)t).setValue((short)value);
+                        return t;
+                    }
+                    return null; //Should never happen
+                }
+            }
+            return null; //Should never happen
+        }
+    }
+
+    private String stringifyItem(ItemStack stack) throws InvocationTargetException, IllegalAccessException, InstantiationException, NoSuchFieldException, NoSuchMethodException {
+        Item item = toItem(stack);
+        ProtocolVersion.remapIds(ProtocolVersion.getServerVersion().MAX_VER, protocolVersion.MAX_VER, item);
+        StringBuilder sb = new StringBuilder("{id:");
+        sb.append("\"").append(item.getId()).append("\"").append(","); //Append the id
+        sb.append("Count:").append(item.getAmount()).append("b,"); //Append the amount
+        sb.append("Damage:").append(item.getData()).append("s"); //Append the durability data
+
+        Map<String, Tag> tagMap = item.getTag().getValue();
+        if(tagMap.isEmpty()){
+            sb.append("}");
+            return sb.toString();
+        }
+        Set<Map.Entry<String, Tag>> entrySet = tagMap.entrySet();
+        boolean first = true;
+        sb.append(",tag:{"); //Start of the tag
+        for(Map.Entry<String, Tag> entry : entrySet){
+            String key = entry.getKey();
+            if(IGNORED.contains(key)){
+                continue;
+            }
+            Pattern pattern = Pattern.compile("[{}\\[\\],\":\\\\/]");
+            Matcher matcher = pattern.matcher(key);
+            if(matcher.find()){
+                continue; //Skip invalid keys, as they can cause exceptions client-side
+            }
+            String value = stringifyTag(entry.getValue());
+            if(!first){
+                sb.append(",");
+            }
+            sb.append(key).append(":").append(value);
+            first = false;
+        }
+        sb.append("}}"); //End of tag and end of item
+        return sb.toString();
+    }
+
+    private String stringifyTag(Tag normalTag){
+        if(normalTag instanceof CompoundTag) {
+            StringBuilder sb = new StringBuilder("{");
+            CompoundTag tagCompound = (CompoundTag) normalTag;
+            Map<String, Tag> tagMap = tagCompound.getValue();
+            Set<Map.Entry<String, Tag>> entrySet = tagMap.entrySet();
+            for(Map.Entry<String, Tag> entry : entrySet){
+                String value = stringifyTag(entry.getValue());
+                if(value == null){
+                    continue;
+                }
+                if(sb.length()>1){
+                    sb.append(",");
+                }
+                sb.append(entry.getKey()).append(":").append(value);
+            }
+
+            sb.append("}");
+            return sb.toString();
+        } else {
+            if(normalTag instanceof StringTag) {
+                return "\""+((StringTag)normalTag).getValue()+"\""; //Should be already escaped
+            }
+
+            if(normalTag instanceof ListTag){
+                List<Tag> list = ((ListTag)normalTag).getValue();
+                StringBuilder sb = new StringBuilder("[");
+                boolean first = true;
+                for(Tag tag : list){
+                    String index = tag.getName();
+                    String value = stringifyTag(tag);
+                    if(value == null){
+                        continue;
+                    }
+                    if(!first){
+                        sb.append(",");
+                    }
+                    if(protocolVersion.MAX_VER <= ProtocolVersion.V1_11.MAX_VER){ //it's before 1.12
+                        sb.append(index).append(":").append(value);
+                    }else{
+                        sb.append(value);
+                    }
+
+                    first = false;
+                }
+                sb.append("]");
+                return sb.toString();
+            }
+
+            if(normalTag instanceof ByteTag){
+                return normalTag.getValue()+"b";
+            }
+            if(normalTag instanceof ByteArrayTag){
+                return "["+((byte[])normalTag.getValue()).length+" bytes]";
+            }
+            if(normalTag instanceof DoubleTag){
+                return (double)normalTag.getValue()+"d";
+            }
+            if(normalTag instanceof FloatTag){
+                return (float)normalTag.getValue()+"f";
+            }
+            if(normalTag instanceof IntTag){
+                return String.valueOf((int)normalTag.getValue());
+            }
+            if(normalTag instanceof IntArrayTag){
+                int[] array = (int[])normalTag.getValue();
+                if(array.length == 0){
+                    return null;
+                }
+                StringBuilder sb = new StringBuilder("[");
+                boolean first = true;
+                for(int i : array){
+                    if(!first){
+                        sb.append(",");
+                    }
+                    sb.append(i);
+                    first = false;
+                }
+                sb.append("]");
+                return sb.toString();
+            }
+            if(normalTag instanceof LongTag){
+                return (long)normalTag.getValue()+"L";
+            }
+            if(normalTag instanceof ShortTag){
+                return (short)normalTag.getValue()+"s";
+            }
+            return null; //Should never happen
+        }
     }
 
 

src/main/java/me/dadus33/chatitem/json/Translator.java

@@ -1,93 +1,135 @@
 package me.dadus33.chatitem.json;
 
 
-import com.google.gson.JsonParser;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import org.bukkit.ChatColor;
 
-/*
-Many thanks to @DarkSeraphim for this!
-I only modified his work to make it compatible with what I was building.
-*/
+//Based on DarkSeraphim's system, but using Gson and supporting some more edge cases
 public class Translator {
-    private static final StringBuilder BUILDER = new StringBuilder("");
-    private static final StringBuilder STYLE = new StringBuilder();
-    private static final JsonParser JSON_PARSER = new JsonParser();
 
-    static String toJSON(String message) {
-        if (message == null || message.isEmpty())
-            return null;
-        String[] parts = message.split(Character.toString(ChatColor.COLOR_CHAR));
-        boolean first = true;
-        String colour = null;
-        String format = null;
-        BUILDER.setLength(0);
-        BUILDER.append("[");
-        boolean ignoreFirst = !parts[0].isEmpty() && ChatColor.getByChar(parts[0].charAt(0)) != null;
-        for (String part : parts) {
-            if (part.isEmpty()) {
+    private static final String STYLES = "klmnor"; //All style codes
+
+    public static JsonArray toJson(String old){
+        if(old.lastIndexOf(ChatColor.COLOR_CHAR) == -1){
+            JsonArray arr = new JsonArray();
+            JsonObject obj = new JsonObject();
+            obj.addProperty("text", old);
+            arr.add(obj);
+            return arr;
+        }
+        boolean startsWithCode = old.startsWith(Character.toString(ChatColor.COLOR_CHAR));
+        JsonArray message = new JsonArray();
+        String[] parts = old.split(Character.toString(ChatColor.COLOR_CHAR));
+        JsonObject next = null; //refers to the object we created before (in time) but next in the message, as we're going from end to start
+        for(int i = parts.length-1; i >= 0; --i){ //We go in reverse order
+            String part = parts[i];
+
+            if(part.isEmpty()){
                 continue;
             }
 
-            String newStyle = null;
-            if (!ignoreFirst) {
-                newStyle = getStyle(part.charAt(0));
-            } else {
-                ignoreFirst = false;
+            if(i == 0 && !startsWithCode){
+                JsonObject toAdd = new JsonObject();
+                toAdd.addProperty("text", part);
+                message.add(toAdd);
+                break;
             }
 
-            if (newStyle != null) {
-                part = part.substring(1);
-                if (newStyle.startsWith("\"c"))
-                    colour = newStyle;
-                else
-                    format = newStyle;
+            char code = Character.toLowerCase(part.charAt(0));
+
+            if(!isColorOrStyle(code)){
+                if(next != null){
+                    String text = next.get("text").getAsString();
+                    text = ChatColor.COLOR_CHAR + part + text;
+                    next.addProperty("text", text);
+                }else{
+                    JsonObject added = new JsonObject();
+                    added.addProperty("text", ChatColor.COLOR_CHAR + part);
+                    message.add(added);
+                    next = added;
+                }
+                continue;
             }
-            if (!part.isEmpty()) {
-                if (first)
-                    first = false;
-                else {
-                    BUILDER.append(", ");
+
+            if(part.length() == 1){ //If it's just format and no text, we try to format the next element, if it wasn't formatted already (and it's not null)
+                if(next == null){
+                    continue;
                 }
-                BUILDER.append("{");
-                if (colour != null) {
-                    BUILDER.append(colour);
-                    colour = null;
+
+                if(isStyle(code)){
+                    next.addProperty(getStyleName(code), true);
+                }else{ //it's a color
+                    if(isAlreadyColored(next)){
+                        continue;
+                    }
+                    next.addProperty("color", getColorName(code));
                 }
-                if (format != null) {
-                    BUILDER.append(format);
-                    format = null;
-                }
-                BUILDER.append(String.format("\"text\":\"%s\"", part));
-                BUILDER.append("}");
+                continue;
             }
+            //Last possibility that remains is that we have a normal color/format + text situation
+            JsonObject added = new JsonObject();
+            added.addProperty("text", part.substring(1));
+            if(isStyle(code)){
+                added.addProperty(getStyleName(code), true);
+                message.add(added);
+                next = added;
+                continue;
+            }
+            //else it can only be a color
+            added.addProperty("color", getColorName(code));
+            //also try to color the next element if not colored already
+            if(next != null){
+                if(!isAlreadyColored(next)){
+                    next.addProperty("color", getColorName(code));
+                }
+            }
+            message.add(added);
+            next = added;
         }
-        BUILDER.append("]");
-        return BUILDER.toString();
+
+        int i = message.size()-1;
+        JsonArray orderedMessage = new JsonArray();//This is where we'll store the reverted message (in proper order for being sent to the client)
+        //First we have to copy all elements
+        for(JsonElement el : message){
+            orderedMessage.add(el);
+        }
+        for(JsonElement element : message){
+            JsonObject obj = (JsonObject) element;
+            orderedMessage.set(i, obj); //And then we add the object to the properly ordered array
+            --i;
+        }
+
+        return orderedMessage;
     }
 
-    private static String getStyle(char colour) {
-        if (STYLE.length() > 0)
-            STYLE.delete(0, STYLE.length());
-        switch (colour) {
-            case 'k':
-                return "\"obfuscated\": true,";
-            case 'l':
-                return "\"bold\": true,";
-            case 'm':
-                return "\"strikethrough\": true,";
-            case 'n':
-                return "\"underlined\": true,";
-            case 'o':
-                return "\"italic\": true,";
-            case 'r':
-                return "\"reset\": true,";
-            default:
-                break;
+    private static String getColorName(char code){
+        return ChatColor.getByChar(code).name().toLowerCase();
+    }
+
+    private static String getStyleName(char code){
+        switch(code){
+            case 'k': return "obfuscated";
+            case 'l': return "bold";
+            case 'm': return "strikethrough";
+            case 'n': return "underlined";
+            case 'o': return "italic";
+            case 'r': return "reset";
+            default: return null; //Should never happen. Made it return null to throw errors if a new format pops up and it really happens
         }
-        ChatColor cc = ChatColor.getByChar(colour);
-        if (cc == null)
-            return null;
-        return STYLE.append("\"color\":\"").append(cc.name().toLowerCase()).append("\", ").toString();
+    }
+
+    private static boolean isColorOrStyle(char code){
+        return ChatColor.getByChar(code) != null;
+    }
+
+    private static boolean isStyle(char c){
+        return STYLES.indexOf(c) != -1;
+    }
+
+    private static boolean isAlreadyColored(JsonObject obj){
+        return obj.has("color");
     }
 
 }

src/main/java/me/dadus33/chatitem/listeners/ChatEventListener.java

@@ -4,25 +4,76 @@ import me.dadus33.chatitem.utils.Storage;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.command.Command;
+import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.AsyncPlayerChatEvent;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 
+import java.util.HashMap;
 
 public class ChatEventListener implements Listener {
 
     private Storage c;
+    public final static char SEPARATOR = ((char)0x0007);
+    private final static String LEFT = "{remaining}";
+    private final HashMap<String, Long> COOLDOWNS = new HashMap<>();
 
     public ChatEventListener(Storage storage) {
         c = storage;
     }
 
+    private String calculateTime(long seconds){
+        if(seconds < 60){
+            return seconds+c.SECONDS;
+        }
+        if(seconds < 3600){
+            StringBuilder builder = new StringBuilder();
+            int minutes = (int) seconds / 60;
+            builder.append(minutes).append(c.MINUTES);
+            int secs = (int) seconds - minutes*60;
+            if(secs != 0){
+                builder.append(" ").append(secs).append(c.SECONDS);
+            }
+            return builder.toString();
+        }
+        StringBuilder builder = new StringBuilder();
+        int hours = (int) seconds / 3600;
+        builder.append(hours).append(c.HOURS);
+        int minutes = (int) (seconds/60) - (hours*60);
+        if(minutes != 0){
+            builder.append(" ").append(minutes).append(c.MINUTES);
+        }
+        int secs = (int) (seconds - ((seconds/60)*60));
+        if(secs != 0){
+            builder.append(" ").append(secs).append(c.SECONDS);
+        }
+        return builder.toString();
+    }
+
+    private int countOccurrences(String findStr, String str){
+        int lastIndex = 0;
+        int count = 0;
+        while(lastIndex != -1){
+
+            lastIndex = str.indexOf(findStr,lastIndex);
+
+            if(lastIndex != -1){
+                count++;
+                lastIndex += findStr.length();
+            }
+        }
+        return count;
+    }
 
     @SuppressWarnings("deprecation")
-    @EventHandler(ignoreCancelled = true, priority = EventPriority.LOWEST)
-    public void onChat(AsyncPlayerChatEvent e) {
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.LOWEST)  //We need to have lowest priority in order to get to the event before DeluxeChat or other plugins do
+    public void onChat(final AsyncPlayerChatEvent e) {
+        if(e.getMessage().indexOf(SEPARATOR)!=-1){  //If the BELL character is found, we have to remove it
+            String msg = e.getMessage().replace(Character.toString(SEPARATOR), "");
+            e.setMessage(msg);
+        }
         boolean found = false;
 
         for (String rep : c.PLACEHOLDERS)
@@ -30,60 +81,172 @@ public class ChatEventListener implements Listener {
                 found = true;
                 break;
             }
+
         if (!found) {
             return;
         }
-        if (!e.getPlayer().hasPermission("chatitem.use")) {
-            e.setCancelled(true);
+
+        Player p = e.getPlayer();
+
+        if (!p.hasPermission("chatitem.use")) {
+            if(!c.LET_MESSAGE_THROUGH) {
+                e.setCancelled(true);
+            }
+            if(!c.NO_PERMISSION_MESSAGE.isEmpty() && c.SHOW_NO_PERM_NORMAL){
+                p.sendMessage(c.NO_PERMISSION_MESSAGE);
+            }
             return;
         }
-        if (e.getPlayer().getItemInHand().getType().equals(Material.AIR)) {
+        if (p.getItemInHand().getType().equals(Material.AIR)) {
             if (c.DENY_IF_NO_ITEM) {
                 e.setCancelled(true);
                 if (!c.DENY_MESSAGE.isEmpty())
                     e.getPlayer().sendMessage(c.DENY_MESSAGE);
                 return;
             }
+            if(c.HAND_DISABLED) {
+                return;
+            }
+        }
+        if(c.COOLDOWN > 0 && !p.hasPermission("chatitem.ignore-cooldown")){
+            if(COOLDOWNS.containsKey(p.getName())){
+                long start = COOLDOWNS.get(p.getName());
+                long current = System.currentTimeMillis()/1000;
+                long elapsed = current - start;
+                if(elapsed >= c.COOLDOWN){
+                    COOLDOWNS.remove(p.getName());
+                }else{
+                    if(!c.LET_MESSAGE_THROUGH) {
+                        e.setCancelled(true);
+                    }
+                    if(!c.COOLDOWN_MESSAGE.isEmpty()){
+                        long left = (start + c.COOLDOWN) - current;
+                        p.sendMessage(c.COOLDOWN_MESSAGE.replace(LEFT, calculateTime(left)));
+                    }
+                    return;
+                }
+            }
+        }
+        String s = e.getMessage();
+        for(String placeholder : c.PLACEHOLDERS){
+            s = s.replace(placeholder, c.PLACEHOLDERS.get(0));
+        }
+        int occurrences = countOccurrences(c.PLACEHOLDERS.get(0), s);
+
+        if(occurrences>c.LIMIT){
+            e.setCancelled(true);
+            if(c.LIMIT_MESSAGE.isEmpty()){
+                return;
+            }
+            e.getPlayer().sendMessage(c.LIMIT_MESSAGE);
             return;
         }
+
         String oldmsg = e.getMessage();
-        e.setMessage(e.getMessage().concat(e.getPlayer().getName()));
+        StringBuilder sb = new StringBuilder(oldmsg);
+        sb.append(SEPARATOR).append(e.getPlayer().getName());
+        e.setMessage(sb.toString());
         Bukkit.getConsoleSender().sendMessage(String.format(e.getFormat(), e.getPlayer().getDisplayName(), oldmsg));
+        if(!p.hasPermission("chatitem.ignore-cooldown")) {
+            COOLDOWNS.put(p.getName(), System.currentTimeMillis() / 1000);
+        }
     }
 
 
     @SuppressWarnings("deprecation")
-    @EventHandler(priority = EventPriority.NORMAL)
-    public void onCommand(PlayerCommandPreprocessEvent e){
-        Command cmd = Bukkit.getPluginCommand(e.getMessage().split(" ")[0].substring(1));
-        if(!c.ALLOWED_COMMANDS.contains(cmd)){
-            return;
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onCommand(final PlayerCommandPreprocessEvent e){
+        if(e.getMessage().indexOf(SEPARATOR)!=-1){  //If the BELL character is found, we have to remove it
+            String msg = e.getMessage().replace(Character.toString(SEPARATOR), "");
+            e.setMessage(msg);
         }
+        String commandString = e.getMessage().split(" ")[0].replaceAll("^/+", ""); //First part of the command, without leading slashes and without arguments
+        Command cmd = Bukkit.getPluginCommand(commandString);
+        if(cmd==null){ //not a plugin command
+            if(!c.ALLOWED_DEFAULT_COMMANDS.contains(commandString)){
+                return;
+            }
+        }else{
+            if(!c.ALLOWED_PLUGIN_COMMANDS.contains(cmd)){
+                return;
+            }
+        }
+
+        Player p = e.getPlayer();
         boolean found = false;
 
-        for (String rep : c.PLACEHOLDERS)
+        for (String rep : c.PLACEHOLDERS) {
             if (e.getMessage().contains(rep)) {
                 found = true;
                 break;
             }
+        }
+
         if (!found) {
             return;
         }
-        if (!e.getPlayer().hasPermission("chatitem.use")) {
+
+        if (!p.hasPermission("chatitem.use")) {
+            if(!c.NO_PERMISSION_MESSAGE.isEmpty() && c.SHOW_NO_PERM_COMMAND){
+                p.sendMessage(c.NO_PERMISSION_MESSAGE);
+            }
             e.setCancelled(true);
             return;
         }
+
         if (e.getPlayer().getItemInHand().getType().equals(Material.AIR)) {
             if (c.DENY_IF_NO_ITEM) {
                 e.setCancelled(true);
-                if (!c.DENY_MESSAGE.isEmpty())
+                if (!c.DENY_MESSAGE.isEmpty()) {
                     e.getPlayer().sendMessage(c.DENY_MESSAGE);
+                }
             }
+            if(c.HAND_DISABLED) {
+                return;
+            }
+        }
+
+        if(c.COOLDOWN > 0 && !p.hasPermission("chatitem.ignore-cooldown")){
+            if(COOLDOWNS.containsKey(p.getName())){
+                long start = COOLDOWNS.get(p.getName());
+                long current = System.currentTimeMillis()/1000;
+                long elapsed = current - start;
+                if(elapsed >= c.COOLDOWN){
+                    COOLDOWNS.remove(p.getName());
+                }else{
+                    if(!c.LET_MESSAGE_THROUGH) {
+                        e.setCancelled(true);
+                    }
+                    if(!c.COOLDOWN_MESSAGE.isEmpty()){
+                        long left = (start + c.COOLDOWN) - current;
+                        p.sendMessage(c.COOLDOWN_MESSAGE.replace(LEFT, calculateTime(left)));
+                    }
+                    return;
+                }
+            }
+        }
+
+        String s = e.getMessage();
+        for(String placeholder : c.PLACEHOLDERS){
+            s = s.replace(placeholder, c.PLACEHOLDERS.get(0));
+        }
+        int occurrences = countOccurrences(c.PLACEHOLDERS.get(0), s);
+
+        if(occurrences>c.LIMIT){
+            e.setCancelled(true);
+            if(c.LIMIT_MESSAGE.isEmpty()){
+               return;
+            }
+            e.getPlayer().sendMessage(c.LIMIT_MESSAGE);
             return;
         }
 
-        e.setMessage(e.getMessage().concat(e.getPlayer().getName()));
-
+        StringBuilder sb = new StringBuilder(e.getMessage());
+        sb.append(SEPARATOR).append(e.getPlayer().getName());
+        e.setMessage(sb.toString());
+        if(!p.hasPermission("chatitem.ignore-cooldown")) {
+            COOLDOWNS.put(p.getName(), System.currentTimeMillis() / 1000);
+        }
     }
 
 

src/main/java/me/dadus33/chatitem/listeners/ChatPacketListener.java

@@ -1,35 +1,57 @@
 package me.dadus33.chatitem.listeners;
 
+import java.lang.reflect.InvocationTargetException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.block.ShulkerBox;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BlockStateMeta;
+import org.bukkit.inventory.meta.BookMeta;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.plugin.Plugin;
+
 import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.events.ListenerPriority;
 import com.comphenix.protocol.events.PacketAdapter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.wrappers.WrappedChatComponent;
+
 import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.utils.ProtocolVersion;
 import me.dadus33.chatitem.utils.Storage;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.ItemStack;
-import org.bukkit.plugin.Plugin;
-
-import java.lang.reflect.InvocationTargetException;
-import java.util.HashMap;
-
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
 
+@Deprecated
 public class ChatPacketListener extends PacketAdapter {
 
     private final static String NAME = "{name}";
     private final static String AMOUNT = "{amount}";
     private final static String TIMES = "{times}";
-    private ChatItem instance;
+    private final static List<Material> SHULKER_BOXES = new ArrayList<>();
+
     private Storage c;
 
+
     public ChatPacketListener(Plugin plugin, ListenerPriority listenerPriority, Storage s, PacketType... types) {
         super(plugin, listenerPriority, types);
-        this.instance = (ChatItem) plugin;
+        if(ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_11)){
+            SHULKER_BOXES.addAll(Arrays.asList(Material.BLACK_SHULKER_BOX, Material.BLUE_SHULKER_BOX,
+                    Material.BROWN_SHULKER_BOX, Material.CYAN_SHULKER_BOX, Material.GRAY_SHULKER_BOX, Material.GREEN_SHULKER_BOX,
+                    Material.LIGHT_BLUE_SHULKER_BOX, Material.LIME_SHULKER_BOX, Material.MAGENTA_SHULKER_BOX, Material.ORANGE_SHULKER_BOX,
+                    Material.PINK_SHULKER_BOX, Material.PURPLE_SHULKER_BOX, Material.RED_SHULKER_BOX, Material.LIGHT_GRAY_SHULKER_BOX,
+                    Material.WHITE_SHULKER_BOX, Material.YELLOW_SHULKER_BOX));
+        }
         c = s;
     }
 
@@ -54,121 +76,158 @@ public class ChatPacketListener extends PacketAdapter {
         }
 
         return sb.toString();
-
-
     }
 
-    @SuppressWarnings("deprecation")
-    @Override
-    public void onPacketSending(PacketEvent e) {
-        if(ChatItem.post17)
-        if (e.getPacket().getBytes().readSafely(0) == (byte) 2) {
-            return;  //It means it's an actionbar message, and we ain't intercepting those
-        }
-
-        PacketContainer packet = e.getPacket();
-        String json = packet.getChatComponents().readSafely(0).getJson();
-
-        boolean found = false;
-        for (String rep : c.PLACEHOLDERS)
-            if (json.contains(rep)) {
-                found = true;
-                break;
-            }
-        if (!found) {
-            return; //then it's just a normal message without placeholders, so we leave it alone
-        }
-        int topIndex = -1;
-        String name = null;
-        for(Player p : Bukkit.getOnlinePlayers()){
-            String pname = p.getName();
-            if(!json.contains(pname)){
-                continue;
-            }
-            int index = json.lastIndexOf(pname)+pname.length();
-            if(index>topIndex){
-                topIndex = index;
-                name = pname;
-            }
-        }
-        if(name==null){ //something went really bad, so we run away and hide
+    private void stripData(ItemStack i){
+        if(i == null){
             return;
         }
-        Player p = Bukkit.getPlayer(name);
-        StringBuilder buff = new StringBuilder(json);
-        buff.replace(topIndex-name.length(), topIndex, "");
-        json = buff.toString();
-
-
-        //STYLE BEGIN
-
-            ItemStack inHand = p.getItemInHand();
-            String replacer = c.NAME_FORMAT;
-            String amount = c.AMOUNT_FORMAT;
-            boolean dname = false;
-            if (!c.COLOR_IF_ALREADY_COLORED && inHand.hasItemMeta()) {
-                if (inHand.getItemMeta().hasDisplayName()) {
-                    replacer = ChatColor.stripColor(replacer);
-                    dname = true;
-                }
-            } else {
-                if (inHand.hasItemMeta()) {
-                    if (inHand.getItemMeta().hasDisplayName()) {
-                        dname = true;
-                    }
-                }
-            }
-            if (inHand.getAmount() == 1) {
-                if (c.FORCE_ADD_AMOUNT) {
-                    amount = amount.replace(TIMES, "1");
-                    replacer = replacer.replace(AMOUNT, amount);
-                } else {
-                    replacer = replacer.replace(AMOUNT, "");
-                }
-            } else {
-                amount = amount.replace(TIMES, String.valueOf(inHand.getAmount()));
-                replacer = replacer.replace(AMOUNT, amount);
-            }
-            if (dname) {
-                String trp = inHand.getItemMeta().getDisplayName();
-                replacer = replacer.replace(NAME, trp);
-            } else {
-                HashMap<Short, String> translationSection = c.TRANSLATIONS.get(inHand.getType().name());
-                if(translationSection==null){
-                    String trp = materialToName(inHand.getType());
-                    replacer = replacer.replace(NAME, trp);
-                }else {
-                    String translated = translationSection.get(inHand.getDurability());
-                    if (translated != null) {
-                        replacer = replacer.replace(NAME, translated);
-                    } else {
-                        replacer = replacer.replace(NAME, materialToName(inHand.getType()));
-                    }
-                }
-            }
-
-
-        //STYLE END
-
-        String[] reps = new String[c.PLACEHOLDERS.size()];
-        c.PLACEHOLDERS.toArray(reps);
-        String message = null;
-        try {
-            if(!p.getItemInHand().getType().equals(Material.AIR))
-            message = ChatItem.getManipulator().parse(json, reps, p.getItemInHand(), replacer);
-        } catch (InvocationTargetException | IllegalAccessException | InstantiationException e1) {
-            e1.printStackTrace();
+        if(i.getType().equals(Material.AIR)){
+            return;
         }
-        if(message!=null)
-            packet.getChatComponents().writeSafely(0, WrappedChatComponent.fromJson(message));
-        else
-            e.setCancelled(true);
+        if(!i.hasItemMeta()){
+            return;
+        }
+        ItemMeta im = Bukkit.getItemFactory().getItemMeta(i.getType());
+        ItemMeta original = i.getItemMeta();
+        if(original.hasDisplayName()){
+            im.setDisplayName(original.getDisplayName());
+        }
+        i.setItemMeta(im);
+    }
 
+    @Override
+    public void onPacketSending(final PacketEvent e) {
+    	if(e.isPlayerTemporary())
+    		return;
+        final PacketContainer packet = e.getPacket();
+        if(!packet.getMeta("parse").isPresent()){ //First we check if the packet validator has validated this packet to be parsed by us
+            return;
+        }
+        final boolean usesBaseComponents = (boolean)packet.getMeta("base-component").orElse(false); //The packet validator should also tell if this packet uses base components
+        e.setCancelled(true); //We cancel the packet as we're going to resend it anyways (ignoring listeners this time)
+        Bukkit.getScheduler().runTaskAsynchronously(ChatItem.getInstance(), () -> {
+            String json = (String)packet.getMeta("json").orElse(""); //The packet validator got the json for us, so no need to get it again
+            int topIndex = -1;
+            String name = null;
+            for(Player p : Bukkit.getOnlinePlayers()){
+                String pname = "\\u0007"+p.getName();
+                if(!json.contains(pname)){
+                    continue;
+                }
+                int index = json.lastIndexOf(pname)+pname.length();
+                if(index>topIndex){
+                    topIndex = index;
+                    name = pname.replace("\\u0007", "");
+                }
+            }
+            if(name==null){ //something went really bad, so we run away and hide (AKA the player left or is on another server)
+                return;
+            }
+
+            Player p = Bukkit.getPlayer(name);
+            StringBuilder builder = new StringBuilder(json);
+            builder.replace(topIndex-(name.length()+6), topIndex, ""); //we remove both the name and the separator from the json string
+            json = builder.toString();
+
+            String message = null;
+            try {
+                if(!p.getItemInHand().getType().equals(Material.AIR)) {
+                    ItemStack copy = p.getItemInHand().clone();
+                    if(copy.getType().name().contains("_BOOK")){ //filtering written books
+                        BookMeta bm = (BookMeta)copy.getItemMeta();
+                        bm.setPages(Collections.emptyList());
+                        copy.setItemMeta(bm);
+                    } else {
+                        if (ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_11)) { //filtering shulker boxes
+                            if (SHULKER_BOXES.contains(copy.getType())) {
+                                if (copy.hasItemMeta()) {
+                                    BlockStateMeta bsm = (BlockStateMeta) copy.getItemMeta();
+                                    if (bsm.hasBlockState()) {
+                                        ShulkerBox sb = (ShulkerBox) bsm.getBlockState();
+                                        for (ItemStack item : sb.getInventory()) {
+                                            stripData(item);
+                                        }
+                                        bsm.setBlockState(sb);
+                                    }
+                                    copy.setItemMeta(bsm);
+                                }
+                            }
+                        }
+                    }
+                    message = ChatItem.getManipulator().parse(json, c.PLACEHOLDERS, copy, styleItem(copy, c), ProtocolVersion.getClientVersion(e.getPlayer()));
+                } else {
+                    if(!c.HAND_DISABLED){
+                        message = ChatItem.getManipulator().parseEmpty(json, c.PLACEHOLDERS, c.HAND_NAME, c.HAND_TOOLTIP, p);
+                    }
+                }
+            } catch (InvocationTargetException | IllegalAccessException | InstantiationException | NoSuchFieldException | NoSuchMethodException e1) {
+                e1.printStackTrace();
+            }
+            if(message!=null) {
+                if(!usesBaseComponents) {
+                    packet.getChatComponents().writeSafely(0, WrappedChatComponent.fromJson(message));
+                }else{
+                    packet.getSpecificModifier(BaseComponent[].class).writeSafely(0, ComponentSerializer.parse(message));
+                }
+                try {
+                    ProtocolLibrary.getProtocolManager().sendServerPacket(e.getPlayer(), packet, false);
+                } catch (InvocationTargetException e1) {
+                    e1.printStackTrace();
+                }
+            } else {
+                try {
+                    ProtocolLibrary.getProtocolManager().sendServerPacket(e.getPlayer(), packet, false);
+                } catch (InvocationTargetException e1) {
+                    e1.printStackTrace();
+                }
+
+            }
+        });
     }
 
     public void setStorage(Storage st) {
         c = st;
     }
 
+    public static String styleItem(ItemStack item, Storage c){
+        String replacer = c.NAME_FORMAT;
+        String amount = c.AMOUNT_FORMAT;
+        boolean dname = item.hasItemMeta() ? item.getItemMeta().hasDisplayName() : false;
+
+        if (item.getAmount() == 1) {
+            if (c.FORCE_ADD_AMOUNT) {
+                amount = amount.replace(TIMES, "1");
+                replacer = replacer.replace(AMOUNT, amount);
+            } else {
+                replacer = replacer.replace(AMOUNT, "");
+            }
+        } else {
+            amount = amount.replace(TIMES, String.valueOf(item.getAmount()));
+            replacer = replacer.replace(AMOUNT, amount);
+        }
+        if (dname) {
+            String trp = item.getItemMeta().getDisplayName();
+            if(c.COLOR_IF_ALREADY_COLORED){
+                replacer = replacer.replace(NAME, ChatColor.stripColor(trp));
+            } else {
+                replacer = replacer.replace(NAME, trp);
+            }
+        } else {
+            HashMap<Short, String> translationSection = c.TRANSLATIONS.get(item.getType().name());
+            if(translationSection==null){
+                String trp = materialToName(item.getType());
+                replacer = replacer.replace(NAME, trp);
+            }else {
+				String translated = translationSection.get(item.getDurability());
+                if (translated != null) {
+                    replacer = replacer.replace(NAME, translated);
+                } else {
+                    replacer = replacer.replace(NAME, materialToName(item.getType()));
+                }
+            }
+        }
+        return replacer;
+    }
 
 }

src/main/java/me/dadus33/chatitem/listeners/ChatPacketListenerV2.java

@@ -0,0 +1,229 @@
+package me.dadus33.chatitem.listeners;
+
+import java.util.Collections;
+import java.util.HashMap;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.block.ShulkerBox;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BlockStateMeta;
+import org.bukkit.inventory.meta.BookMeta;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketContent;
+import me.dadus33.chatitem.packets.PacketHandler;
+import me.dadus33.chatitem.packets.PacketMetadata;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.Storage;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
+
+public class ChatPacketListenerV2 extends PacketHandler {
+
+	private final static String NAME = "{name}";
+	private final static String AMOUNT = "{amount}";
+	private final static String TIMES = "{times}";
+
+	private Storage c;
+
+	public ChatPacketListenerV2(Storage s) {
+		c = s;
+	}
+
+	private static String materialToName(Material m) {
+		if (m.equals(Material.TNT)) {
+			return "TNT";
+		}
+		String orig = m.toString().toLowerCase();
+		String[] splits = orig.split("_");
+		StringBuilder sb = new StringBuilder(orig.length());
+		int pos = 0;
+		for (String split : splits) {
+			sb.append(split);
+			int loc = sb.lastIndexOf(split);
+			char charLoc = sb.charAt(loc);
+			if (!(split.equalsIgnoreCase("of") || split.equalsIgnoreCase("and") || split.equalsIgnoreCase("with")
+					|| split.equalsIgnoreCase("on")))
+				sb.setCharAt(loc, Character.toUpperCase(charLoc));
+			if (pos != splits.length - 1)
+				sb.append(' ');
+			++pos;
+		}
+
+		return sb.toString();
+	}
+
+	private void stripData(ItemStack i) {
+		if (i == null) {
+			return;
+		}
+		if (i.getType().equals(Material.AIR)) {
+			return;
+		}
+		if (!i.hasItemMeta()) {
+			return;
+		}
+		ItemMeta im = Bukkit.getItemFactory().getItemMeta(i.getType());
+		ItemMeta original = i.getItemMeta();
+		if (original.hasDisplayName()) {
+			im.setDisplayName(original.getDisplayName());
+		}
+		i.setItemMeta(im);
+	}
+
+	@SuppressWarnings("deprecation")
+	@Override
+	public void onSend(ChatItemPacket e) {
+    	if(!e.hasPlayer() || !e.getPacketType().equals(PacketType.Server.CHAT)) {
+    		return;
+    	}
+    	final PacketContent packet = e.getContent();
+		final PacketMetadata meta = e.getMetaData();
+		if (!meta.hasMeta("parse")) { // First we check if the packet validator has validated this packet to be parsed
+										// by us
+			ChatItem.debug("Can't parse : " + e.getPacket());
+			meta.getMetas().forEach((s, o) -> ChatItem.debug("metaData: " + s + " > " + o));
+			return;
+		}
+		meta.removeMeta("parse");
+		boolean usesBaseComponents = meta.getMeta("base-component", false); // The packet validator should also tell if this
+																							// packet uses base
+																							// components
+		e.setCancelled(true); // We cancel the packet as we're going to resend it anyways (ignoring listeners
+								// this time)
+		Bukkit.getScheduler().runTaskAsynchronously(ChatItem.getInstance(), () -> {
+			String json = (String) meta.getMeta("json", ""); // The packet validator got the json for us, so no need to
+																// get it again
+
+			int topIndex = -1;
+			String name = null;
+			for (Player p : Bukkit.getOnlinePlayers()) {
+				String pname = "\\u0007" + p.getName();
+				if (!json.contains(pname)) {
+					continue;
+				}
+				int index = json.lastIndexOf(pname) + pname.length();
+				if (index > topIndex) {
+					topIndex = index;
+					name = pname.replace("\\u0007", "");
+				}
+			}
+			if (name == null) { // something went really bad, so we run away and hide (AKA the player left or is
+								// on another server)
+				ChatItem.debug("Name null for " + json);
+				return;
+			}
+
+			Player p = Bukkit.getPlayer(name);
+			StringBuilder builder = new StringBuilder(json);
+			builder.replace(topIndex - (name.length() + 6), topIndex, ""); // we remove both the name and the separator
+																			// from the json string
+			json = builder.toString();
+
+			String message = null;
+			try {
+				if (!p.getItemInHand().getType().equals(Material.AIR)) {
+					ItemStack copy = p.getItemInHand().clone();
+					if (copy.getType().name().contains("_BOOK")) { // filtering written books
+						BookMeta bm = (BookMeta) copy.getItemMeta();
+						bm.setPages(Collections.emptyList());
+						copy.setItemMeta(bm);
+					} else {
+						if (copy.getType().name().contains("SHULKER_BOX")) { // if it's shulker
+							if (copy.hasItemMeta()) {
+								BlockStateMeta bsm = (BlockStateMeta) copy.getItemMeta();
+								if (bsm.hasBlockState()) {
+									ShulkerBox sb = (ShulkerBox) bsm.getBlockState();
+									for (ItemStack item : sb.getInventory()) {
+										stripData(item);
+									}
+									bsm.setBlockState(sb);
+								}
+								copy.setItemMeta(bsm);
+							}
+						}
+					}
+					message = ChatItem.getManipulator().parse(json, c.PLACEHOLDERS, copy, styleItem(copy, c),
+							ProtocolVersion.getClientVersion(e.getPlayer()));
+				} else {
+					if (!c.HAND_DISABLED) {
+						message = ChatItem.getManipulator().parseEmpty(json, c.PLACEHOLDERS, c.HAND_NAME,
+								c.HAND_TOOLTIP, p);
+					}
+				}
+			} catch (Exception e1) {
+				e1.printStackTrace();
+			}
+			if (message != null) {
+				if (!usesBaseComponents) {
+					packet.getChatComponents().write(0, jsonToChatComponent(message));
+				} else {
+					packet.getSpecificModifier(BaseComponent[].class).write(0, ComponentSerializer.parse(message));
+				}
+			}
+			PacketUtils.sendPacket(p, e.getPacket());
+		});
+	}
+	
+	private Object jsonToChatComponent(String json) {
+		try {
+			return PacketUtils.CHAT_SERIALIZER.getMethod("a", String.class).invoke(null, json);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+
+	public void setStorage(Storage st) {
+		c = st;
+	}
+
+	public static String styleItem(ItemStack item, Storage c) {
+		String replacer = c.NAME_FORMAT;
+		String amount = c.AMOUNT_FORMAT;
+		boolean dname = item.hasItemMeta() ? item.getItemMeta().hasDisplayName() : false;
+
+		if (item.getAmount() == 1) {
+			if (c.FORCE_ADD_AMOUNT) {
+				amount = amount.replace(TIMES, "1");
+				replacer = replacer.replace(AMOUNT, amount);
+			} else {
+				replacer = replacer.replace(AMOUNT, "");
+			}
+		} else {
+			amount = amount.replace(TIMES, String.valueOf(item.getAmount()));
+			replacer = replacer.replace(AMOUNT, amount);
+		}
+		if (dname) {
+			String trp = item.getItemMeta().getDisplayName();
+			if (c.COLOR_IF_ALREADY_COLORED) {
+				replacer = replacer.replace(NAME, ChatColor.stripColor(trp));
+			} else {
+				replacer = replacer.replace(NAME, trp);
+			}
+		} else {
+			HashMap<Short, String> translationSection = c.TRANSLATIONS.get(item.getType().name());
+			if (translationSection == null) {
+				String trp = materialToName(item.getType());
+				replacer = replacer.replace(NAME, trp);
+			} else {
+				@SuppressWarnings("deprecation")
+				String translated = translationSection.get(item.getDurability());
+				if (translated != null) {
+					replacer = replacer.replace(NAME, translated);
+				} else {
+					replacer = replacer.replace(NAME, materialToName(item.getType()));
+				}
+			}
+		}
+		return replacer;
+	}
+
+}

src/main/java/me/dadus33/chatitem/listeners/ChatPacketValidator.java

@@ -0,0 +1,84 @@
+package me.dadus33.chatitem.listeners;
+
+import org.bukkit.plugin.Plugin;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.events.ListenerPriority;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.events.PacketEvent;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.Storage;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
+
+@Deprecated
+public class ChatPacketValidator extends PacketAdapter {
+
+    private Storage c;
+
+    public ChatPacketValidator(Plugin plugin, ListenerPriority listenerPriority, Storage s, PacketType... types) {
+        super(plugin, listenerPriority, types);
+        c = s;
+    }
+
+    @Override
+	public void onPacketSending(PacketEvent e){
+    	if(e.isPlayerTemporary())
+    		return;
+    	ProtocolVersion version = ProtocolVersion.getServerVersion();
+        if(version.isNewerOrEquals(ProtocolVersion.V1_8)) { //only if action bar messages are supported in this version of minecraft
+            if(version.isNewerOrEquals(ProtocolVersion.V1_12)){
+            	try {
+	                if(((Enum<?>)e.getPacket().getSpecificModifier(Class.forName("net.minecraft.server." + ProtocolVersion.BUKKIT_VERSION + ".ChatMessageType")).read(0)).name().equals("GAME_INFO")){
+	                    return; //It means it's an actionbar message, and we ain't intercepting those
+	                }
+            	} catch (Exception exc) {
+            		exc.printStackTrace();
+				}
+            } else if (e.getPacket().getBytes().readSafely(0) == (byte) 2) {
+                return;  //It means it's an actionbar message, and we ain't intercepting those
+            }
+        }
+        boolean usesBaseComponents = false;
+        PacketContainer packet = e.getPacket();
+        String json;
+        if(packet.getChatComponents().readSafely(0)==null){  //null check for some cases of messages sent using spigot's Chat Component API or other means
+            if(ChatItem.supportsChatComponentApi()){  //only if the API is supported in this server distribution
+                BaseComponent[] components = packet.getSpecificModifier(BaseComponent[].class).readSafely(0);
+                if(components == null){
+                    return;
+                }
+                json = ComponentSerializer.toString(components);
+                usesBaseComponents = true;
+            }else{
+                return; //We don't know how to deal with anything else. Most probably some mod message we shouldn't mess with anyways
+            }
+        }else{
+            json = packet.getChatComponents().readSafely(0).getJson();
+        }
+
+        boolean found = false;
+        for (String rep : c.PLACEHOLDERS)
+            if (json.contains(rep)) {
+                found = true;
+                break;
+            }
+        if (!found) {
+            return; //then it's just a normal message without placeholders, so we leave it alone
+        }
+        if(json.lastIndexOf("\\u0007")==-1){ //if the message doesn't contain the BELL separator, then it's certainly NOT a message we want to parse
+            return;
+        }
+        
+        packet.setMeta("parse", true); //We mark this packet to be parsed by the packet listener
+        packet.setMeta("base-component", usesBaseComponents); //We also tell it whether this packet uses the base component API
+        packet.setMeta("json", json); //And we finally provide it with the json we already got from the packet
+    }
+
+    public void setStorage(Storage st){
+        c = st;
+    }
+}

src/main/java/me/dadus33/chatitem/listeners/ChatPacketValidatorV2.java

@@ -0,0 +1,101 @@
+package me.dadus33.chatitem.listeners;
+
+import java.lang.reflect.Method;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketContent;
+import me.dadus33.chatitem.packets.PacketHandler;
+import me.dadus33.chatitem.packets.PacketMetadata;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.Storage;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
+
+public class ChatPacketValidatorV2 extends PacketHandler {
+
+    private Storage c;
+    private Method serializerGetJson;
+
+    public ChatPacketValidatorV2(Storage s) {
+        c = s;
+        try {
+        	for(Method m : PacketUtils.CHAT_SERIALIZER.getDeclaredMethods()) {
+        		if(m.getParameterCount() == 1 && m.getParameterTypes()[0].equals(PacketUtils.COMPONENT_CLASS) && m.getReturnType().equals(String.class)) {
+        			serializerGetJson = m;
+        			break;
+        		}
+        	}
+        	if(serializerGetJson == null)
+        		ChatItem.getInstance().getLogger().warning("Failed to find JSON serializer in class: " + PacketUtils.CHAT_SERIALIZER.getCanonicalName());
+        } catch (Exception e) {
+        	e.printStackTrace();
+		}
+    }
+
+    @Override
+    public void onSend(ChatItemPacket e) {
+    	if(!e.hasPlayer() || !e.getPacketType().equals(PacketType.Server.CHAT))
+    		return;
+    	ProtocolVersion version = ProtocolVersion.getServerVersion();
+        if(version.isNewerOrEquals(ProtocolVersion.V1_8)) { //only if action bar messages are supported in this version of minecraft
+            if(version.isNewerOrEquals(ProtocolVersion.V1_12)){
+            	try {
+	                if(((Enum<?>)e.getContent().getSpecificModifier(PacketUtils.getNmsClass("ChatMessageType", "network.chat.")).read(0)).name().equals("GAME_INFO")){
+	                    return; //It means it's an actionbar message, and we ain't intercepting those
+	                }
+            	} catch (Exception exc) {
+            		exc.printStackTrace();
+				}
+            } else if (e.getContent().getBytes().readSafely(0) == (byte) 2) {
+                return;  //It means it's an actionbar message, and we ain't intercepting those
+            }
+        }
+        boolean usesBaseComponents = false;
+        PacketContent packet = e.getContent();
+        String json;
+        if(packet.getChatComponents().readSafely(0) == null){  //null check for some cases of messages sent using spigot's Chat Component API or other means
+            if(!ChatItem.supportsChatComponentApi())  //only if the API is supported in this server distribution
+            	return;//We don't know how to deal with anything else. Most probably some mod message we shouldn't mess with anyways
+            
+            BaseComponent[] components = packet.getSpecificModifier(BaseComponent[].class).readSafely(0);
+            if(components == null){
+                return;
+            }
+            json = ComponentSerializer.toString(components);
+            usesBaseComponents = true;
+        } else {
+        	try {
+        		json = (String) serializerGetJson.invoke(null, packet.getChatComponents().readSafely(0));// (String) ReflectionUtils.callMethod(packet.getChatComponents().readSafely(0), "getJson");
+            } catch (Exception exc) {
+        		exc.printStackTrace();
+        		json = "{}";
+			}
+        }
+
+        boolean found = false;
+        for (String rep : c.PLACEHOLDERS) {
+            if (json.contains(rep)) {
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            return; //then it's just a normal message without placeholders, so we leave it alone
+        }
+        if(json.lastIndexOf("\\u0007") == -1){ //if the message doesn't contain the BELL separator, then it's certainly NOT a message we want to parse
+        	ChatItem.debug("Not containb bell " + json);
+            return;
+        }
+        PacketMetadata meta = e.getMetaData();
+        meta.setMeta("parse", true); //We mark this packet to be parsed by the packet listener
+        meta.setMeta("base-component", usesBaseComponents); //We also tell it whether this packet uses the base component API
+        meta.setMeta("json", json); //And we finally provide it with the json we already got from the packet
+    }
+
+    public void setStorage(Storage st){
+        c = st;
+    }
+}

src/main/java/me/dadus33/chatitem/listeners/HandshakeListener.java

@@ -0,0 +1,32 @@
+package me.dadus33.chatitem.listeners;
+
+
+import org.bukkit.Bukkit;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.events.ListenerPriority;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketEvent;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.playerversion.hooks.DefaultVersionHook;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+
+public class HandshakeListener extends PacketAdapter{
+
+    public HandshakeListener() {
+        super(ChatItem.getInstance(), ListenerPriority.MONITOR, PacketType.Handshake.Client.SET_PROTOCOL);
+    }
+
+    @Override
+    public void onPacketReceiving(final PacketEvent e){
+        PacketType.Protocol p = e.getPacket().getProtocols().read(0);
+        if(p == PacketType.Protocol.STATUS || p == PacketType.Protocol.LEGACY){
+            return;
+        }
+        final int version = e.getPacket().getIntegers().readSafely(0);
+        //Delay the mapping to make sure the true address of the player was received when using bungeecord or other types of proxies
+        Bukkit.getScheduler().scheduleSyncDelayedTask(getPlugin(), () ->
+        DefaultVersionHook.PROTOCOL_PER_ADDRESS.put(ProtocolVersion.stringifyAdress(e.getPlayer().getAddress()), version), 10L);
+    }
+}

src/main/java/me/dadus33/chatitem/packets/ChatItemPacket.java

@@ -0,0 +1,58 @@
+package me.dadus33.chatitem.packets;
+
+import org.bukkit.entity.Player;
+
+public class ChatItemPacket {
+
+	protected Player player;
+	protected Object packet;
+	protected PacketType type;
+	protected boolean cancel = false;
+	protected PacketMetadata metaData = new PacketMetadata();
+	
+	public ChatItemPacket(PacketType type, Object packet, Player player) {
+		this.player = player;
+		this.packet = packet;
+		this.type = type;
+	}
+	
+	public Player getPlayer() {
+		return player;
+	}
+
+	public boolean hasPlayer() {
+		return player != null;
+	}
+	
+	public String getPlayername() {
+		return getPlayer().getName();
+	}
+	
+	public Object getPacket() {
+		return packet;
+	}
+
+	public String getPacketName() {
+		return packet.getClass().getSimpleName();
+	}
+	
+	public PacketType getPacketType() {
+		return type;
+	}
+	
+	public boolean isCancelled() {
+		return cancel;
+	}
+	
+	public void setCancelled(boolean cancel) {
+		this.cancel = cancel;
+	}
+
+	public PacketContent getContent() {
+		return new PacketContent(this);
+	}
+	
+	public PacketMetadata getMetaData() {
+		return metaData;
+	}
+}

src/main/java/me/dadus33/chatitem/packets/ChatItemPacketManager.java

@@ -0,0 +1,41 @@
+package me.dadus33.chatitem.packets;
+
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+import me.dadus33.chatitem.packets.protocollib.ProtocollibPacketManager;
+
+public class ChatItemPacketManager {
+
+	private PacketManager packetManager;
+	
+	public ChatItemPacketManager(ChatItem pl) {
+		Plugin protocolLibPlugin = Bukkit.getPluginManager().getPlugin("ProtocolLib");
+		if (protocolLibPlugin != null) {
+			if(checkProtocollibConditions()) {
+				pl.getLogger().info("The plugin ProtocolLib has been detected. Loading Protocollib support ...");
+				packetManager = new ProtocollibPacketManager(pl);
+			} else {
+				pl.getLogger().warning("The plugin ProtocolLib has been detected but you have an OLD version, so we cannot use it.");
+				pl.getLogger().warning("Fallback to default Packet system ...");
+				packetManager = new CustomPacketManager(pl);
+			}
+		} else
+			packetManager = new CustomPacketManager(pl);
+	}
+	
+	public PacketManager getPacketManager() {
+		return packetManager;
+	}
+	
+	private boolean checkProtocollibConditions() {
+		try {
+			Class.forName("com.comphenix.protocol.injector.server.TemporaryPlayer");
+			return true;
+		} catch (ClassNotFoundException e) {
+			return false;
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/packets/PacketContent.java

@@ -0,0 +1,204 @@
+package me.dadus33.chatitem.packets;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.NoSuchElementException;
+import java.util.Objects;
+
+import me.dadus33.chatitem.utils.PacketUtils;
+
+public class PacketContent {
+
+	
+	private final ChatItemPacket packet;
+	private final Object obj;
+	
+	/**
+	 * Create a PacketContent to easily read and write value in it
+	 * 
+	 * @param packet the Negativity's packet
+	 */
+	public PacketContent(ChatItemPacket packet) {
+		this.packet = packet;
+		this.obj = packet.getPacket();
+	}
+	
+	/**
+	 * Create a PacketContent to easily read and write to the specified object
+	 * 
+	 * @param obj the object that will be read or edit
+	 */
+	public PacketContent(Object obj) {
+		this.packet = null;
+		this.obj = obj;
+	}
+	
+	public ChatItemPacket getPacket() {
+		return packet;
+	}
+	
+	public <T> ContentModifier<T> getSpecificModifier(T type){
+		return new ContentModifier<T>(obj, type.getClass());
+	}
+	
+	public <T> ContentModifier<T> getSpecificModifier(Class<T> clazz){
+		return new ContentModifier<T>(obj, clazz);
+	}
+	
+	public ContentModifier<String> getStrings(){
+		return new ContentModifier<String>(obj, String.class);
+	}
+	
+	public ContentModifier<Byte> getBytes(){
+		return new ContentModifier<Byte>(obj, byte.class);
+	}
+	
+	public ContentModifier<Boolean> getBooleans(){
+		return new ContentModifier<Boolean>(obj, boolean.class);
+	}
+	
+	public ContentModifier<Integer> getIntegers(){
+		return new ContentModifier<Integer>(obj, int.class);
+	}
+	
+	public ContentModifier<byte[]> getByteArrays(){
+		return new ContentModifier<byte[]>(obj, byte[].class);
+	}
+
+	@SuppressWarnings("unchecked")
+	public ContentModifier<Object> getChatComponents() {
+		return (ContentModifier<Object>) getSpecificModifier(PacketUtils.COMPONENT_CLASS);
+	}
+	
+	public static class ContentModifier<T> {
+		
+		private Object obj;
+		private HashMap<Field, T> content = new HashMap<>();
+
+		@SuppressWarnings("unchecked")
+		public ContentModifier(Object obj, Class<?> clazz) {
+			this.obj = obj;
+			
+			for(Field f : obj.getClass().getDeclaredFields()) {
+				try {
+					if(f.getType().isAssignableFrom(clazz)) {
+						f.setAccessible(true);
+						content.put(f, (T) f.get(obj));
+					}
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+			if(!obj.getClass().getSuperclass().equals(Object.class)) {
+				for(Field f : obj.getClass().getSuperclass().getDeclaredFields()) {
+					try {
+						if(f.getType().isAssignableFrom(clazz)) {
+							f.setAccessible(true);
+							content.put(f, (T) f.get(obj));
+						}
+					} catch (Exception e) {
+						e.printStackTrace();
+					}
+				}
+			}
+		}
+		
+		/**
+		 * Get the size of the Map of content
+		 * 
+		 * @return the number of content
+		 */
+		public int size() {
+			return content.size();
+		}
+
+		/**
+		 * Get the value of the field which is named by the given one
+		 * 
+		 * @param fieldName the name of the needed field
+		 * @return the value of the field
+		 */
+		public T read(String fieldName) {
+			for(Field field : content.keySet())
+				if(field.getName().equalsIgnoreCase(fieldName))
+					return content.get(field);
+			return null;
+		}
+		
+		/**
+		 * Get the value of the field which is named by the given one
+		 * 
+		 * @param fieldName the name of the needed field
+		 * @param defaultValue the returned value if there is no value
+		 * @return the value of the field
+		 */
+		public T read(String fieldName, T defaultValue) {
+			for(Field field : content.keySet())
+				if(field.getName().equalsIgnoreCase(fieldName))
+					return content.get(field);
+			return defaultValue;
+		}
+		
+		/**
+		 * Read the specified value.
+		 * 
+		 * @param i the number of the value to get getted. Start at 0.
+		 * @return the requested value.
+		 * 
+		 * @throws NoSuchElementException if the value doesn't exist
+		 */
+		public T read(int i) {
+			return content.values().stream().filter(Objects::nonNull).findFirst().get();
+		}
+		
+		/**
+		 * Read the specified value.
+		 * 
+		 * @param i the number of the value to get getted. Start at 0.
+		 * @return the requested value, or null if it doesn't exist.
+		 */
+		public T readSafely(int i) {
+			return readSafely(i, null);
+		}
+		
+		/**
+		 * Read the specified value.
+		 * 
+		 * @param i the number of the value to get getted. Start at 0.
+		 * @param defaultValue the value which is return if the key doesn't exist
+		 * @return the requested value.
+		 */
+		public T readSafely(int i, T defaultValue) {
+			return content.values().stream().filter(Objects::nonNull).findFirst().orElse(defaultValue);
+		}
+		
+		/**
+		 * Set the value in the specified object.
+		 * 
+		 * @param i the key of the value to set
+		 * @param value the new value which will be set
+		 */
+		public void write(int i, T value) {
+			Field key = content.keySet().toArray(new Field[] {})[i];
+			if(key == null) {
+				new NoSuchFieldException("Not enough value in " + obj.getClass() + ".").printStackTrace();
+			} else {
+				content.put(key, value);
+				try {
+					key.set(obj, value);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		}
+		
+		/**
+		 * Get field which her value
+		 * 
+		 * @return all content
+		 */
+		public HashMap<Field, T> getContent(){
+			return content;
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/packets/PacketHandler.java

@@ -0,0 +1,7 @@
+package me.dadus33.chatitem.packets;
+
+public abstract class PacketHandler {
+
+	public void onReceive(ChatItemPacket packet) {}
+	public void onSend(ChatItemPacket packet) {}
+}

src/main/java/me/dadus33/chatitem/packets/PacketManager.java

@@ -0,0 +1,25 @@
+package me.dadus33.chatitem.packets;
+
+import java.util.ArrayList;
+
+import org.bukkit.entity.Player;
+
+public abstract class PacketManager {
+
+	public abstract void addPlayer(Player p);
+	public abstract void removePlayer(Player p);
+	public abstract void clear();
+
+	private final ArrayList<PacketHandler> handlers = new ArrayList<>();
+	public boolean addHandler(PacketHandler handler) {
+		return !handlers.add(handler);
+	}
+
+	public boolean removeHandler(PacketHandler handler) {
+		return handlers.remove(handler);
+	}
+
+	public void notifyHandlersSent(ChatItemPacket packet) {
+		handlers.forEach((handler) -> handler.onSend(packet));
+	}
+}

src/main/java/me/dadus33/chatitem/packets/PacketMetadata.java

@@ -0,0 +1,29 @@
+package me.dadus33.chatitem.packets;
+
+import java.util.HashMap;
+
+public class PacketMetadata {
+
+	private final HashMap<String, Object> metas = new HashMap<>();
+	
+	public void setMeta(String key, Object obj) {
+		this.metas.put(key, obj);
+	}
+	
+	public boolean hasMeta(String key) {
+		return metas.containsKey(key);
+	}
+	
+	public void removeMeta(String key) {
+		metas.remove(key);
+	}
+	
+	@SuppressWarnings("unchecked")
+	public <T> T getMeta(String key, T def) {
+		return (T) metas.getOrDefault(key, def);
+	}
+	
+	public HashMap<String, Object> getMetas() {
+		return metas;
+	}
+}

src/main/java/me/dadus33/chatitem/packets/PacketType.java

@@ -0,0 +1,94 @@
+package me.dadus33.chatitem.packets;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public interface PacketType {
+
+	String name();
+	String getPacketName();
+	String getFullName();
+	List<String> getAlias();
+	
+	static final String SERVER_PREFIX = "PacketPlayOut", HANDSHAKE_PREFIX = "PacketHandshaking";
+	
+	public static PacketType getType(String packetName) {
+		if(packetName.startsWith(SERVER_PREFIX)) {
+			return getPacketTypeFor(packetName, Server.values(), Server.UNSET);
+		} else if(packetName.startsWith(HANDSHAKE_PREFIX)) {
+			return getPacketTypeFor(packetName, Handshake.values(), Handshake.UNSET);
+		} else {
+			return null;
+		}
+	}
+	
+	static PacketType getPacketTypeFor(String packetName, PacketType[] types, PacketType unset) {
+		for(PacketType packet : types)
+			if(packet.getFullName().equalsIgnoreCase(packetName) || packet.getPacketName().equalsIgnoreCase(packetName)  || packet.getAlias().contains(packetName))
+				return packet;
+		return unset;
+	}
+	
+	public static enum Server implements PacketType {
+		
+		CHAT("Chat"),
+		UNSET("Unset");
+		
+		private final String packetName, fullName;
+		private List<String> alias = new ArrayList<>();
+		
+		private Server(String packetName, String... alias) {
+			this.packetName = packetName;
+			this.fullName = SERVER_PREFIX + packetName;
+			for(String al : alias)
+				this.alias.add(SERVER_PREFIX + al);
+		}
+
+		@Override
+		public String getPacketName() {
+			return packetName;
+		}
+
+		@Override
+		public String getFullName() {
+			return fullName;
+		}
+		
+		@Override
+		public List<String> getAlias() {
+			return alias;
+		}
+	}
+	
+	public static enum Handshake implements PacketType {
+		
+		IS_SET_PROTOCOL("InSetProtocol"),
+		UNSET("Unset");
+		
+		private final String packetName, fullName;
+		private List<String> alias = new ArrayList<>();
+		
+		private Handshake(String packetName, String... alias) {
+			this.packetName = packetName;
+			for(String al : alias)
+				this.alias.add(HANDSHAKE_PREFIX + al);
+			this.fullName = HANDSHAKE_PREFIX + packetName;
+		}
+
+		@Override
+		public String getPacketName() {
+			return packetName;
+		}
+
+		@Override
+		public String getFullName() {
+			return fullName;
+		}
+		
+		@Override
+		public List<String> getAlias() {
+			return alias;
+		}
+		
+	}
+}

src/main/java/me/dadus33/chatitem/packets/custom/CustomPacketManager.java

@@ -0,0 +1,94 @@
+package me.dadus33.chatitem.packets.custom;
+
+import java.util.HashMap;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.plugin.Plugin;
+
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketManager;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.packets.custom.channel.ChannelAbstract;
+import me.dadus33.chatitem.packets.custom.channel.INC2Channel;
+import me.dadus33.chatitem.packets.custom.channel.INCChannel;
+import me.dadus33.chatitem.packets.custom.channel.NMUChannel;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.Utils;
+
+public class CustomPacketManager extends PacketManager implements Listener {
+	
+	private ChannelAbstract channel;
+	private Plugin pl;
+	public HashMap<Object, Integer> protocolVersionPerChannel = new HashMap<>();
+	private boolean isStarted = false;
+
+	public CustomPacketManager(Plugin pl) {
+		this.pl = pl;
+		ProtocolVersion version = ProtocolVersion.getServerVersion();
+		if (version.isNewerOrEquals(ProtocolVersion.V1_17))
+			channel = new INC2Channel(this);
+		else if (version.equals(ProtocolVersion.V1_7))
+			channel = new NMUChannel(this);
+		else
+			channel = new INCChannel(this);
+		pl.getServer().getPluginManager().registerEvents(this, pl);
+		
+		// we wait the start server
+		Bukkit.getScheduler().runTaskLater(pl, new Runnable() {
+			@Override
+			public void run() {
+				isStarted = true;
+				for(Player p : Utils.getOnlinePlayers())
+					addPlayer(p);
+			}
+		}, 40);
+	}
+	
+	public Plugin getPlugin() {
+		return pl;
+	}
+
+	@EventHandler
+	public void onJoin(PlayerJoinEvent e) {
+		addPlayer(e.getPlayer());
+	}
+
+	@EventHandler
+	public void onQuit(PlayerQuitEvent e) {
+		removePlayer(e.getPlayer());
+	}
+
+	@Override
+	public void addPlayer(Player p) {
+		if(isStarted)
+			channel.addPlayer(p);
+	}
+
+	@Override
+	public void removePlayer(Player p) {
+		channel.removePlayer(p);
+	}
+
+	@Override
+	public void clear() {
+		for(Player player : Utils.getOnlinePlayers())
+			removePlayer(player);
+		if(channel.getAddChannelExecutor() != null)
+			channel.getAddChannelExecutor().shutdownNow();
+		if(channel.getRemoveChannelExecutor() != null)
+			channel.getRemoveChannelExecutor().shutdownNow();
+	}
+
+	public ChatItemPacket onPacketSent(PacketType type, Player sender, Object packet) {
+		if(type == null)
+			return null;
+		ChatItemPacket customPacket = new ChatItemPacket(type, packet, sender);
+		notifyHandlersSent(customPacket);
+		return customPacket;
+	}
+}

src/main/java/me/dadus33/chatitem/packets/custom/channel/ChannelAbstract.java

@@ -0,0 +1,73 @@
+package me.dadus33.chatitem.packets.custom.channel;
+
+import java.util.HashSet;
+import java.util.UUID;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+import me.dadus33.chatitem.playerversion.hooks.DefaultVersionHook;
+
+public abstract class ChannelAbstract {
+
+	private ExecutorService addChannelExecutor, removeChannelExecutor;
+	static final String KEY_HANDSHAKE = "packet_handshake_negativity", KEY_HANDLER_SERVER = "packet_handler", KEY_SERVER = "packet_server_negativity";
+
+	private CustomPacketManager customPacketManager;
+	private HashSet<UUID> players = new HashSet<>();
+	
+	protected ChannelAbstract(CustomPacketManager customPacketManager) {
+		this.customPacketManager = customPacketManager;
+	}
+	
+	public CustomPacketManager getPacketManager() {
+		return customPacketManager;
+	}
+	
+	public ExecutorService getAddChannelExecutor() {
+		return addChannelExecutor;
+	}
+	
+	public ExecutorService getOrCreateAddChannelExecutor() {
+		if(addChannelExecutor == null)
+			addChannelExecutor = Executors.newSingleThreadExecutor();
+		return addChannelExecutor;
+	}
+	
+	public ExecutorService getRemoveChannelExecutor() {
+		return removeChannelExecutor;
+	}
+	
+	public ExecutorService getOrCreateRemoveChannelExecutor() {
+		if(removeChannelExecutor == null)
+			removeChannelExecutor = Executors.newSingleThreadExecutor();
+		return removeChannelExecutor;
+	}
+
+	public void addPlayer(Player p) {
+		if(players.add(p.getUniqueId())) {
+			addChannel(p, p.getUniqueId().toString());
+			try {
+				Integer protocol = customPacketManager.protocolVersionPerChannel.remove(getChannel(p));
+				if(protocol != null)
+					DefaultVersionHook.PROTOCOL_PER_UUID.put(p.getUniqueId(), protocol);
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+	}
+
+	public void removePlayer(Player p) {
+		if(players.remove(p.getUniqueId()))
+			removeChannel(p, p.getUniqueId().toString());
+	}
+	
+	public abstract void addChannel(Player player, String endChannelName);
+
+	public abstract void removeChannel(Player player, String endChannelName);
+	
+	public abstract Object getChannel(Player p) throws Exception;
+
+}

src/main/java/me/dadus33/chatitem/packets/custom/channel/ChannelInboundHandler.java

@@ -0,0 +1,75 @@
+package me.dadus33.chatitem.packets.custom.channel;
+
+import java.util.HashMap;
+import java.util.logging.Level;
+
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelInitializer;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketContent;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+
+public class ChannelInboundHandler extends ChannelInboundHandlerAdapter {
+
+	public static final HashMap<Channel, ChatItemPacket> TMP = new HashMap<>();
+	private CustomPacketManager packetManager;
+	
+	public ChannelInboundHandler(CustomPacketManager packetManager) {
+		this.packetManager = packetManager;
+	}
+	
+	@Override
+	public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+		ctx.fireChannelRead(msg);
+		((Channel) msg).pipeline().addFirst(new ChannelInitializer<Channel>() {
+			@Override
+			protected void initChannel(Channel channel) {
+				try {
+					channel.eventLoop().submit(() -> {
+						try {
+							ChannelHandler interceptor = channel.pipeline().get(ChannelAbstract.KEY_HANDSHAKE);
+							// Inject our packet interceptor
+							if (interceptor == null) {
+								interceptor = new ChannelHandlerHandshakeReceive(channel);
+								channel.pipeline().addBefore("packet_handler", ChannelAbstract.KEY_HANDSHAKE, interceptor);
+							}
+							return interceptor;
+						} catch (IllegalArgumentException e) {
+							// Try again
+							return channel.pipeline().get(ChannelAbstract.KEY_HANDSHAKE);
+						}
+					});
+				} catch (Exception e) {
+					packetManager.getPlugin().getLogger().log(Level.SEVERE, "Cannot inject incoming channel " + channel, e);
+				}
+			}
+		});
+	}
+	
+	public class ChannelHandlerHandshakeReceive extends ChannelInboundHandlerAdapter {
+		
+		private Channel channel;
+		
+		public ChannelHandlerHandshakeReceive(Channel channel) {
+			this.channel = channel;
+		}
+
+		@Override
+		public void channelRead(ChannelHandlerContext ctx, Object packet) {
+			try {
+				PacketType packetType = PacketType.getType(packet.getClass().getSimpleName());
+				if(packetType != null && packetType == PacketType.Handshake.IS_SET_PROTOCOL) {
+					packetManager.protocolVersionPerChannel.put(channel, new PacketContent(packet).getIntegers().readSafely(0, 0));
+				}
+				super.channelRead(ctx, packet);
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+
+	}
+}

src/main/java/me/dadus33/chatitem/packets/custom/channel/INC2Channel.java

@@ -0,0 +1,104 @@
+package me.dadus33.chatitem.packets.custom.channel;
+
+import static me.dadus33.chatitem.utils.PacketUtils.getPlayerConnection;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+
+import org.bukkit.entity.Player;
+
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelOutboundHandlerAdapter;
+import io.netty.channel.ChannelPromise;
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+import me.dadus33.chatitem.playerversion.hooks.DefaultVersionHook;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.ReflectionUtils;
+
+public class INC2Channel extends ChannelAbstract {
+	
+	@SuppressWarnings("unchecked")
+	public INC2Channel(CustomPacketManager customPacketManager) {
+		super(customPacketManager);
+		try {
+			Object mcServer = ReflectionUtils.callMethod(PacketUtils.getCraftServer(), "getServer");
+			Object co = ReflectionUtils.getFirstWith(mcServer, PacketUtils.getNmsClass("MinecraftServer", "server."), PacketUtils.getNmsClass("ServerConnection", "server.network."));
+			((List<ChannelFuture>) ReflectionUtils.getField(co, "f")).forEach((channelFuture) -> {
+				channelFuture.channel().pipeline().addFirst(new ChannelInboundHandler(customPacketManager));
+			});
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void addChannel(final Player player, String endChannelName) {
+		getOrCreateAddChannelExecutor().execute(() -> {
+			if(!player.isOnline())
+				return;
+			try {
+				Channel channel = getChannel(player);
+				// Managing outgoing packet (to the player)
+				channel.pipeline().addAfter(KEY_HANDLER_SERVER, KEY_SERVER + endChannelName, new ChannelHandlerSent(player));
+
+				ChatItemPacket pa = ChannelInboundHandler.TMP.remove(channel);
+				if(pa != null)
+					DefaultVersionHook.PROTOCOL_PER_UUID.put(player.getUniqueId(), pa.getContent().getIntegers().readSafely(0, ProtocolVersion.getServerVersion().MAX_VER));
+			} catch (NoSuchElementException e) {
+				// appear when the player's channel isn't accessible because of reload.
+				getPacketManager().getPlugin().getLogger().warning("Please, don't use reload, this can produce some problem. Currently, " + player.getName() + " isn't fully checked because of that. More details: " + e.getMessage() + " (NoSuchElementException)");
+			} catch (IllegalArgumentException e) {
+				if(e.getMessage().contains("Duplicate handler")) {
+					removeChannel(player, endChannelName);
+					addChannel(player, endChannelName);
+				} else
+					getPacketManager().getPlugin().getLogger().severe("Error while loading Packet channel. " + e.getMessage() + ". Please, prefer restart than reload.");
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		});
+	}
+
+	@Override
+	public void removeChannel(Player player, String endChannelName) {
+		getOrCreateRemoveChannelExecutor().execute(() -> {
+			try {
+				final Channel channel = getChannel(player);
+				if(channel.pipeline().get(KEY_SERVER + endChannelName) != null)
+					channel.pipeline().remove(KEY_SERVER + endChannelName);
+			} catch (Exception e) {
+				ChatItem.getInstance().getLogger().warning("Failed to remove channel for " + player.getName() + ". Reason: " + e.getMessage() + " (" + e.getStackTrace()[0].toString() + ")");
+			}
+		});
+	}
+
+	@Override
+	public Channel getChannel(Player p) throws Exception {
+		Object playerConnection = getPlayerConnection(p);
+		Object networkManager = playerConnection.getClass().getField("a").get(playerConnection);
+		return (Channel) networkManager.getClass().getDeclaredField("k").get(networkManager);//(Channel) networkManager.getClass().getDeclaredField("channel").get(networkManager);
+	}
+
+	private class ChannelHandlerSent extends ChannelOutboundHandlerAdapter {
+
+		private final Player owner;
+
+		public ChannelHandlerSent(Player player) {
+			this.owner = player;
+		}
+
+		@Override
+		public void write(ChannelHandlerContext ctx, Object packet, ChannelPromise promise) throws Exception {
+			ChatItemPacket nextPacket = getPacketManager().onPacketSent(PacketType.getType(packet.getClass().getSimpleName()), owner, packet);
+			if(nextPacket != null && nextPacket.isCancelled())
+				return;
+			super.write(ctx, packet, promise);
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/packets/custom/channel/INCChannel.java

@@ -0,0 +1,122 @@
+package me.dadus33.chatitem.packets.custom.channel;
+
+import static me.dadus33.chatitem.utils.PacketUtils.getPlayerConnection;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+import org.bukkit.entity.Player;
+
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelOutboundHandlerAdapter;
+import io.netty.channel.ChannelPromise;
+import me.dadus33.chatitem.ChatItem;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketContent;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+import me.dadus33.chatitem.playerversion.hooks.DefaultVersionHook;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+import me.dadus33.chatitem.utils.ReflectionUtils;
+
+@SuppressWarnings("unchecked")
+public class INCChannel extends ChannelAbstract {
+	
+	public INCChannel(CustomPacketManager customPacketManager) {
+		super(customPacketManager);
+		getFuturChannel().forEach((channelFuture) -> {
+			channelFuture.channel().pipeline().addFirst(new ChannelInboundHandler(customPacketManager));
+		});
+	}
+
+	public List<ChannelFuture> getFuturChannel() {
+		try {
+			Object dedicatedSrv = PacketUtils.getCraftServer();
+			Object mcServer = dedicatedSrv.getClass().getMethod("getServer").invoke(dedicatedSrv);
+			Object co = ReflectionUtils.getFirstWith(mcServer, PacketUtils.getNmsClass("MinecraftServer", "server."), PacketUtils.getNmsClass("ServerConnection", "network."));
+			try {
+				return (List<ChannelFuture>) ReflectionUtils.getPrivateField(co, "g");
+			} catch (NoSuchFieldException e) {
+				return (List<ChannelFuture>) ReflectionUtils.getPrivateField(co, "listeningChannels");
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+			return new ArrayList<>();
+		}
+	}
+
+	@Override
+	public void addChannel(final Player player, String endChannelName) {
+		getOrCreateAddChannelExecutor().execute(() -> {
+			if(!player.isOnline())
+				return;
+			try {
+				Channel channel = getChannel(player);
+				// Managing outgoing packet (to the player)
+				channel.pipeline().addAfter(KEY_HANDLER_SERVER, KEY_SERVER + endChannelName, new ChannelHandlerSent(player));
+			
+				ChatItemPacket pa = ChannelInboundHandler.TMP.remove(channel);
+				if(pa != null)
+					DefaultVersionHook.PROTOCOL_PER_UUID.put(player.getUniqueId(), pa.getContent().getIntegers().readSafely(0, ProtocolVersion.getServerVersion().MAX_VER));
+			} catch (NoSuchElementException e) {
+				// appear when the player's channel isn't accessible because of reload.
+				getPacketManager().getPlugin().getLogger().warning("Please, don't use reload, this can produce some problem. Currently, " + player.getName() + " isn't fully checked because of that. More details: " + e.getMessage() + " (NoSuchElementException)");
+			} catch (IllegalArgumentException e) {
+				if(e.getMessage().contains("Duplicate handler")) {
+					removeChannel(player, endChannelName);
+					addChannel(player, endChannelName);
+				} else
+					getPacketManager().getPlugin().getLogger().severe("Error while loading Packet channel. " + e.getMessage() + ". Please, prefer restart than reload.");
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		});
+	}
+
+	@Override
+	public void removeChannel(Player player, String endChannelName) {
+		getOrCreateRemoveChannelExecutor().execute(() -> {
+			try {
+				final Channel channel = getChannel(player);
+				
+				if(channel.pipeline().get(KEY_SERVER + endChannelName) != null)
+					channel.pipeline().remove(KEY_SERVER + endChannelName);
+			} catch (Exception e) {
+				ChatItem.getInstance().getLogger().warning("Failed to remove channel for " + player.getName() + ". Reason: " + e.getMessage() + " (" + e.getStackTrace()[0].toString() + ")");
+			}
+		});
+	}
+
+	@Override
+	public Channel getChannel(Player p) throws Exception {
+		Object playerConnection = getPlayerConnection(p);
+		Object networkManager = playerConnection.getClass().getField("networkManager").get(playerConnection);
+		return new PacketContent(networkManager).getSpecificModifier(Channel.class).readSafely(0);//(Channel) networkManager.getClass().getDeclaredField("channel").get(networkManager);
+	}
+
+	private class ChannelHandlerSent extends ChannelOutboundHandlerAdapter {
+
+		private final Player owner;
+
+		public ChannelHandlerSent(Player player) {
+			this.owner = player;
+		}
+		
+		@Override
+		public void write(ChannelHandlerContext ctx, Object packet, ChannelPromise promise) throws Exception {
+			try {
+				ChatItemPacket nextPacket = getPacketManager().onPacketSent(PacketType.getType(packet.getClass().getSimpleName()), owner, packet);
+				if(nextPacket != null && nextPacket.isCancelled())
+					return;
+				super.write(ctx, packet, promise);
+			} catch (Exception e) {
+				e.printStackTrace();
+				super.write(ctx, packet, promise);
+			}
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/packets/custom/channel/NMUChannel.java

@@ -0,0 +1,157 @@
+package me.dadus33.chatitem.packets.custom.channel;
+
+import static me.dadus33.chatitem.utils.PacketUtils.getPlayerConnection;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.logging.Level;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketContent;
+import me.dadus33.chatitem.packets.PacketType;
+import me.dadus33.chatitem.packets.custom.CustomPacketManager;
+import me.dadus33.chatitem.utils.PacketUtils;
+import me.dadus33.chatitem.utils.ReflectionUtils;
+import net.minecraft.util.io.netty.channel.Channel;
+import net.minecraft.util.io.netty.channel.ChannelFuture;
+import net.minecraft.util.io.netty.channel.ChannelHandler;
+import net.minecraft.util.io.netty.channel.ChannelHandlerContext;
+import net.minecraft.util.io.netty.channel.ChannelInboundHandlerAdapter;
+import net.minecraft.util.io.netty.channel.ChannelInitializer;
+import net.minecraft.util.io.netty.channel.ChannelOutboundHandlerAdapter;
+import net.minecraft.util.io.netty.channel.ChannelPromise;
+
+public class NMUChannel extends ChannelAbstract {
+
+	public NMUChannel(CustomPacketManager customPacketManager) {
+		super(customPacketManager);
+		try {
+			Object dedicatedSrv = PacketUtils.getCraftServer();
+			Object mcServer = dedicatedSrv.getClass().getMethod("getServer").invoke(dedicatedSrv);
+			Object co = ReflectionUtils.getFirstWith(mcServer, PacketUtils.getNmsClass("MinecraftServer", "server."), PacketUtils.getNmsClass("ServerConnection", "network."));
+			@SuppressWarnings("unchecked")
+			List<ChannelFuture> g = (List<ChannelFuture>) ReflectionUtils.getField(co, "g");
+			g.forEach((channelFuture) -> {
+				channelFuture.channel().pipeline().addFirst(new ChannelInboundHandlerAdapter() {
+					@Override
+					public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+						((Channel) msg).pipeline().addFirst(new ChannelInitializer<Channel>() {
+							@Override
+							protected void initChannel(Channel channel) {
+								try {
+									channel.eventLoop().submit(() -> {
+										try {
+											ChannelHandler interceptor = channel.pipeline().get(KEY_HANDSHAKE);
+											// Inject our packet interceptor
+											if (interceptor == null) {
+												interceptor = new ChannelHandlerHandshakeReceive(channel);
+												channel.pipeline().addBefore("packet_handler", KEY_HANDSHAKE, interceptor);
+											}
+											return interceptor;
+										} catch (IllegalArgumentException e) {
+											// Try again
+											return channel.pipeline().get(KEY_HANDSHAKE);
+										}
+									});
+								} catch (Exception e) {
+									getPacketManager().getPlugin().getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
+								}
+							}
+						});
+						ctx.fireChannelRead(msg);
+					}
+				});
+			});
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void addChannel(final Player player, String endChannelName) {
+		getOrCreateAddChannelExecutor().execute(() -> {
+			try {
+				Channel channel = getChannel(player);
+				// Managing outgoing packet (to the player)
+				channel.pipeline().addAfter(KEY_HANDLER_SERVER, KEY_SERVER + endChannelName, new ChannelHandlerSent(player));
+			} catch (NoSuchElementException e) {
+				// appear when the player's channel isn't accessible because of reload.
+				getPacketManager().getPlugin().getLogger().warning("Please, don't use reload, this can produce some problem. Currently, " + player.getName() + " isn't fully checked because of that. More details: " + e.getMessage() + " (NoSuchElementException)");
+			} catch (IllegalArgumentException e) {
+				if(e.getMessage().contains("Duplicate")) {
+					removeChannel(player, endChannelName);
+					addChannel(player, endChannelName);
+				} else
+					getPacketManager().getPlugin().getLogger().severe("Error while loading Packet channel. " + e.getMessage() + ". Please, prefer restart than reload.");
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		});
+	}
+
+	@Override
+	public void removeChannel(Player player, String endChannelName) {
+		getOrCreateRemoveChannelExecutor().execute(() -> {
+			try {
+				final Channel channel = getChannel(player);
+				if(channel.pipeline().get(KEY_SERVER + endChannelName) != null)
+					channel.pipeline().remove(KEY_SERVER + endChannelName);
+			} catch (Exception e) {}
+		});
+	}
+
+	@Override
+	public Channel getChannel(Player p) throws Exception {
+		Object playerConnection = getPlayerConnection(p);
+		Object networkManager = playerConnection.getClass().getField("networkManager").get(playerConnection);
+		
+		for (Field field : networkManager.getClass().getDeclaredFields())
+			if (field.getType().equals(Channel.class)) {
+				field.setAccessible(true);
+				return (Channel) field.get(networkManager);
+			}
+		return null;
+	}
+
+	private class ChannelHandlerSent extends ChannelOutboundHandlerAdapter {
+
+		private final Player owner;
+
+		public ChannelHandlerSent(Player player) {
+			this.owner = player;
+		}
+		
+		@Override
+		public void write(ChannelHandlerContext ctx, Object packet, ChannelPromise promise) throws Exception {
+			ChatItemPacket nextPacket = getPacketManager().onPacketSent(PacketType.getType(packet.getClass().getSimpleName()), owner, packet);
+			if(nextPacket != null && nextPacket.isCancelled())
+				return;
+			super.write(ctx, packet, promise);
+		}
+	}
+
+	private class ChannelHandlerHandshakeReceive extends ChannelInboundHandlerAdapter {
+
+		private final Channel channel;
+		
+		public ChannelHandlerHandshakeReceive(Channel channel) {
+			this.channel = channel;
+		}
+		
+		@Override
+		public void channelRead(ChannelHandlerContext ctx, Object packet) {
+			try {
+				PacketType packetType = PacketType.getType(packet.getClass().getSimpleName());
+				if(packetType != null && packetType == PacketType.Handshake.IS_SET_PROTOCOL) {
+					getPacketManager().protocolVersionPerChannel.put(channel, new PacketContent(packet).getIntegers().readSafely(0, 0));
+				}
+				super.channelRead(ctx, packet);
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/packets/protocollib/ProtocollibPacketManager.java

@@ -0,0 +1,59 @@
+package me.dadus33.chatitem.packets.protocollib;
+
+import java.util.Arrays;
+
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+import com.comphenix.protocol.PacketType.Play;
+import com.comphenix.protocol.ProtocolLibrary;
+import com.comphenix.protocol.ProtocolManager;
+import com.comphenix.protocol.events.ListenerPriority;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketEvent;
+
+import me.dadus33.chatitem.listeners.HandshakeListener;
+import me.dadus33.chatitem.packets.ChatItemPacket;
+import me.dadus33.chatitem.packets.PacketManager;
+import me.dadus33.chatitem.packets.PacketType;
+
+public class ProtocollibPacketManager extends PacketManager {
+
+	private final ProtocolManager protocolManager;
+	
+	public ProtocollibPacketManager(Plugin pl) {
+		protocolManager = ProtocolLibrary.getProtocolManager();
+		protocolManager.addPacketListener(new PacketAdapter(pl, ListenerPriority.LOWEST, Arrays.asList(Play.Server.CHAT)) {
+			@Override
+			public void onPacketSending(PacketEvent e) {
+				Player p = e.getPlayer();
+		        if (p == null || e.isPlayerTemporary())
+		        	return;
+				ChatItemPacket packet = onPacketSent(PacketType.getType(e.getPacket().getHandle().getClass().getSimpleName()),
+						p, e.getPacket().getHandle());
+				if(packet == null)
+					return;
+		        if(!e.isCancelled())
+		        	e.setCancelled(packet.isCancelled());
+			}
+		});
+		protocolManager.addPacketListener(new HandshakeListener());
+	}
+
+	@Override
+	public void addPlayer(Player p) {}
+
+	@Override
+	public void removePlayer(Player p) {}
+
+	@Override
+	public void clear() {}
+
+	public ChatItemPacket onPacketSent(PacketType type, Player sender, Object packet) {
+		if(type == null)
+			return null;
+		ChatItemPacket customPacket = new ChatItemPacket(type, packet, sender);
+		notifyHandlersSent(customPacket);
+		return customPacket;
+	}
+}

src/main/java/me/dadus33/chatitem/playerversion/IPlayerVersion.java

@@ -0,0 +1,14 @@
+package me.dadus33.chatitem.playerversion;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.utils.ProtocolVersion;
+
+public interface IPlayerVersion {
+	
+	public int getProtocolVersion(Player p);
+	
+	default ProtocolVersion getPlayerVersion(Player p) {
+		return ProtocolVersion.getVersion(getProtocolVersion(p));
+	}
+}

src/main/java/me/dadus33/chatitem/playerversion/hooks/DefaultVersionHook.java

@@ -0,0 +1,22 @@
+package me.dadus33.chatitem.playerversion.hooks;
+
+import java.util.HashMap;
+import java.util.UUID;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.playerversion.IPlayerVersion;
+import me.dadus33.chatitem.utils.ProtocolVersion;
+
+public class DefaultVersionHook implements IPlayerVersion {
+
+	public static final HashMap<String, Integer> PROTOCOL_PER_ADDRESS = new HashMap<>();
+	public static final HashMap<UUID, Integer> PROTOCOL_PER_UUID = new HashMap<>();
+	
+	@Override
+	public int getProtocolVersion(Player p) {
+		if(PROTOCOL_PER_UUID.containsKey(p.getUniqueId()))
+			return PROTOCOL_PER_UUID.get(p.getUniqueId());
+		return PROTOCOL_PER_ADDRESS.getOrDefault(ProtocolVersion.stringifyAdress(p.getAddress()), ProtocolVersion.getServerVersion().MAX_VER);
+	}
+}

src/main/java/me/dadus33/chatitem/playerversion/hooks/ProtocolSupportHook.java

@@ -0,0 +1,15 @@
+package me.dadus33.chatitem.playerversion.hooks;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.playerversion.IPlayerVersion;
+import protocolsupport.api.ProtocolSupportAPI;
+
+public class ProtocolSupportHook implements IPlayerVersion {
+	
+	@Override
+	public int getProtocolVersion(Player p) {
+		return ProtocolSupportAPI.getProtocolVersion(p).getId();
+	}
+
+}

src/main/java/me/dadus33/chatitem/playerversion/hooks/ViaVersionHook.java

@@ -0,0 +1,14 @@
+package me.dadus33.chatitem.playerversion.hooks;
+
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.playerversion.IPlayerVersion;
+import us.myles.ViaVersion.api.Via;
+
+public class ViaVersionHook implements IPlayerVersion {
+
+	@Override
+	public int getProtocolVersion(Player p) {
+		return Via.getAPI().getPlayerVersion(p.getUniqueId());
+	}
+}

src/main/java/me/dadus33/chatitem/utils/General.java

@@ -1,25 +0,0 @@
-package me.dadus33.chatitem.utils;
-
-import me.dadus33.chatitem.ChatItem;
-import org.bukkit.Bukkit;
-import org.bukkit.ChatColor;
-
-import java.util.logging.Level;
-
-public class General {
-
-    private static Storage c;
-
-    public static void checkConfigVersion() {
-        int latestVersion = ChatItem.CFG_VER;
-        if (latestVersion != c.CONFIG_VERSION) {
-            Bukkit.getLogger().log(Level.WARNING, ChatColor.RED + "ChatItem detected an older or invalid configuration file. Replacing it with the default config...");
-            c.performOverwrite();
-            Bukkit.getLogger().log(Level.WARNING, ChatColor.RED + "Replacement complete!");
-        }
-    }
-
-    public static void init(Storage st) {
-        c = st;
-    }
-}

src/main/java/me/dadus33/chatitem/utils/Item.java

@@ -0,0 +1,43 @@
+package me.dadus33.chatitem.utils;
+
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+
+public class Item {
+    private String id;
+    private byte amount;
+    private short data;
+    private CompoundTag tag;
+
+    public CompoundTag getTag(){
+        return tag;
+    }
+
+    public void setTag(CompoundTag newTag){
+        this.tag = newTag;
+    }
+
+    public void setId(String newId){
+        this.id = newId;
+    }
+
+    public void setData(short newData){
+        data = newData;
+    }
+
+    public String getId(){
+        return id;
+    }
+
+    public short getData(){
+        return data;
+    }
+
+    public void setAmount(byte newAmount){
+        this.amount = newAmount;
+    }
+
+    public byte getAmount(){
+        return amount;
+    }
+}

src/main/java/me/dadus33/chatitem/utils/ItemRewriter_1_11_TO_1_10.java

@@ -0,0 +1,131 @@
+package me.dadus33.chatitem.utils;
+
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
+
+
+/**
+ * Thanks to the developers of ViaVersion for this!
+ */
+public class ItemRewriter_1_11_TO_1_10 {
+    private static BiMap<String, String> oldToNewNames = HashBiMap.create();
+
+    static {
+        oldToNewNames.put("AreaEffectCloud", "minecraft:area_effect_cloud");
+        oldToNewNames.put("ArmorStand", "minecraft:armor_stand");
+        oldToNewNames.put("Arrow", "minecraft:arrow");
+        oldToNewNames.put("Bat", "minecraft:bat");
+        oldToNewNames.put("Blaze", "minecraft:blaze");
+        oldToNewNames.put("Boat", "minecraft:boat");
+        oldToNewNames.put("CaveSpider", "minecraft:cave_spider");
+        oldToNewNames.put("Chicken", "minecraft:chicken");
+        oldToNewNames.put("Cow", "minecraft:cow");
+        oldToNewNames.put("Creeper", "minecraft:creeper");
+        oldToNewNames.put("Donkey", "minecraft:donkey");
+        oldToNewNames.put("DragonFireball", "minecraft:dragon_fireball");
+        oldToNewNames.put("ElderGuardian", "minecraft:elder_guardian");
+        oldToNewNames.put("EnderCrystal", "minecraft:ender_crystal");
+        oldToNewNames.put("EnderDragon", "minecraft:ender_dragon");
+        oldToNewNames.put("Enderman", "minecraft:enderman");
+        oldToNewNames.put("Endermite", "minecraft:endermite");
+        oldToNewNames.put("EntityHorse", "minecraft:horse");
+        oldToNewNames.put("EyeOfEnderSignal", "minecraft:eye_of_ender_signal");
+        oldToNewNames.put("FallingSand", "minecraft:falling_block");
+        oldToNewNames.put("Fireball", "minecraft:fireball");
+        oldToNewNames.put("FireworksRocketEntity", "minecraft:fireworks_rocket");
+        oldToNewNames.put("Ghast", "minecraft:ghast");
+        oldToNewNames.put("Giant", "minecraft:giant");
+        oldToNewNames.put("Guardian", "minecraft:guardian");
+        oldToNewNames.put("Husk", "minecraft:husk");
+        oldToNewNames.put("Item", "minecraft:item");
+        oldToNewNames.put("ItemFrame", "minecraft:item_frame");
+        oldToNewNames.put("LavaSlime", "minecraft:magma_cube");
+        oldToNewNames.put("LeashKnot", "minecraft:leash_knot");
+        oldToNewNames.put("MinecartChest", "minecraft:chest_minecart");
+        oldToNewNames.put("MinecartCommandBlock", "minecraft:commandblock_minecart");
+        oldToNewNames.put("MinecartFurnace", "minecraft:furnace_minecart");
+        oldToNewNames.put("MinecartHopper", "minecraft:hopper_minecart");
+        oldToNewNames.put("MinecartRideable", "minecraft:minecart");
+        oldToNewNames.put("MinecartSpawner", "minecraft:spawner_minecart");
+        oldToNewNames.put("MinecartTNT", "minecraft:tnt_minecart");
+        oldToNewNames.put("Mule", "minecraft:mule");
+        oldToNewNames.put("MushroomCow", "minecraft:mooshroom");
+        oldToNewNames.put("Ozelot", "minecraft:ocelot");
+        oldToNewNames.put("Painting", "minecraft:painting");
+        oldToNewNames.put("Pig", "minecraft:pig");
+        oldToNewNames.put("PigZombie", "minecraft:zombie_pigman");
+        oldToNewNames.put("PolarBear", "minecraft:polar_bear");
+        oldToNewNames.put("PrimedTnt", "minecraft:tnt");
+        oldToNewNames.put("Rabbit", "minecraft:rabbit");
+        oldToNewNames.put("Sheep", "minecraft:sheep");
+        oldToNewNames.put("Shulker", "minecraft:shulker");
+        oldToNewNames.put("ShulkerBullet", "minecraft:shulker_bullet");
+        oldToNewNames.put("Silverfish", "minecraft:silverfish");
+        oldToNewNames.put("Skeleton", "minecraft:skeleton");
+        oldToNewNames.put("SkeletonHorse", "minecraft:skeleton_horse");
+        oldToNewNames.put("Slime", "minecraft:slime");
+        oldToNewNames.put("SmallFireball", "minecraft:small_fireball");
+        oldToNewNames.put("Snowball", "minecraft:snowball");
+        oldToNewNames.put("SnowMan", "minecraft:snowman");
+        oldToNewNames.put("SpectralArrow", "minecraft:spectral_arrow");
+        oldToNewNames.put("Spider", "minecraft:spider");
+        oldToNewNames.put("Squid", "minecraft:squid");
+        oldToNewNames.put("Stray", "minecraft:stray");
+        oldToNewNames.put("ThrownEgg", "minecraft:egg");
+        oldToNewNames.put("ThrownEnderpearl", "minecraft:ender_pearl");
+        oldToNewNames.put("ThrownExpBottle", "minecraft:xp_bottle");
+        oldToNewNames.put("ThrownPotion", "minecraft:potion");
+        oldToNewNames.put("Villager", "minecraft:villager");
+        oldToNewNames.put("VillagerGolem", "minecraft:villager_golem");
+        oldToNewNames.put("Witch", "minecraft:witch");
+        oldToNewNames.put("WitherBoss", "minecraft:wither");
+        oldToNewNames.put("WitherSkeleton", "minecraft:wither_skeleton");
+        oldToNewNames.put("WitherSkull", "minecraft:wither_skull");
+        oldToNewNames.put("Wolf", "minecraft:wolf");
+        oldToNewNames.put("XPOrb", "minecraft:xp_orb");
+        oldToNewNames.put("Zombie", "minecraft:zombie");
+        oldToNewNames.put("ZombieHorse", "minecraft:zombie_horse");
+        oldToNewNames.put("ZombieVillager", "minecraft:zombie_villager");
+    }
+
+    static void toClient(Item item) {
+        if (hasEntityTag(item)) {
+            CompoundTag entityTag = item.getTag().get("EntityTag");
+            if (entityTag.get("id") instanceof StringTag) {
+                StringTag id = entityTag.get("id");
+                if (oldToNewNames.containsKey(id.getValue())) {
+                    id.setValue(oldToNewNames.get(id.getValue()));
+                }
+            }
+        }
+    }
+
+
+    static void reverseToClient(Item item) {
+        if (hasEntityTag(item)) {
+            CompoundTag entityTag = item.getTag().get("EntityTag");
+            if (entityTag.get("id") instanceof StringTag) {
+                StringTag id = entityTag.get("id");
+                if (oldToNewNames.containsKey(id.getValue())) {
+                    id.setValue(oldToNewNames.get(id.getValue()));
+                }
+            }
+        }
+    }
+
+
+    private static boolean hasEntityTag(Item item) {
+        if (item != null && item.getId().equals("minecraft:spawn_egg")) { // Monster Egg
+            CompoundTag tag = item.getTag();
+            if (tag != null && tag.contains("EntityTag") && tag.get("EntityTag") instanceof CompoundTag) {
+                if (((CompoundTag) tag.get("EntityTag")).get("id") instanceof StringTag) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}

src/main/java/me/dadus33/chatitem/utils/ItemRewriter_1_9_TO_1_8.java

@@ -0,0 +1,341 @@
+package me.dadus33.chatitem.utils;
+
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+
+import java.util.HashMap;
+import java.util.Map;
+/**
+ * Thanks to the developers of ViaVersion for this!
+ */
+public class ItemRewriter_1_9_TO_1_8 {
+
+    private static final Map<String, Integer> ENTTIY_NAME_TO_ID = new HashMap<>();
+    private static final Map<Integer, String> ENTTIY_ID_TO_NAME = new HashMap<>();
+    private static final Map<String, Integer> POTION_NAME_TO_ID = new HashMap<>();
+    private static final Map<Integer, String> POTION_ID_TO_NAME = new HashMap<>();
+
+    private static final Map<Integer, Integer> POTION_INDEX = new HashMap<>();
+
+    static {
+        /* Entities */
+        registerEntity(1, "Item");
+        registerEntity(2, "XPOrb");
+        registerEntity(7, "ThrownEgg");
+        registerEntity(8, "LeashKnot");
+        registerEntity(9, "Painting");
+        registerEntity(10, "Arrow");
+        registerEntity(11, "Snowball");
+        registerEntity(12, "Fireball");
+        registerEntity(13, "SmallFireball");
+        registerEntity(14, "ThrownEnderpearl");
+        registerEntity(15, "EyeOfEnderSignal");
+        registerEntity(16, "ThrownPotion");
+        registerEntity(17, "ThrownExpBottle");
+        registerEntity(18, "ItemFrame");
+        registerEntity(19, "WitherSkull");
+        registerEntity(20, "PrimedTnt");
+        registerEntity(21, "FallingSand");
+        registerEntity(22, "FireworksRocketEntity");
+        registerEntity(30, "ArmorStand");
+        registerEntity(40, "MinecartCommandBlock");
+        registerEntity(41, "Boat");
+        registerEntity(42, "MinecartRideable");
+        registerEntity(43, "MinecartChest");
+        registerEntity(44, "MinecartFurnace");
+        registerEntity(45, "MinecartTNT");
+        registerEntity(46, "MinecartHopper");
+        registerEntity(47, "MinecartSpawner");
+        registerEntity(48, "Mob");
+        registerEntity(49, "Monster");
+        registerEntity(50, "Creeper");
+        registerEntity(51, "Skeleton");
+        registerEntity(52, "Spider");
+        registerEntity(53, "Giant");
+        registerEntity(54, "Zombie");
+        registerEntity(55, "Slime");
+        registerEntity(56, "Ghast");
+        registerEntity(57, "PigZombie");
+        registerEntity(58, "Enderman");
+        registerEntity(59, "CaveSpider");
+        registerEntity(60, "Silverfish");
+        registerEntity(61, "Blaze");
+        registerEntity(62, "LavaSlime");
+        registerEntity(63, "EnderDragon");
+        registerEntity(64, "WitherBoss");
+        registerEntity(65, "Bat");
+        registerEntity(66, "Witch");
+        registerEntity(67, "Endermite");
+        registerEntity(68, "Guardian");
+        registerEntity(90, "Pig");
+        registerEntity(91, "Sheep");
+        registerEntity(92, "Cow");
+        registerEntity(93, "Chicken");
+        registerEntity(94, "Squid");
+        registerEntity(95, "Wolf");
+        registerEntity(96, "MushroomCow");
+        registerEntity(97, "SnowMan");
+        registerEntity(98, "Ozelot");
+        registerEntity(99, "VillagerGolem");
+        registerEntity(100, "EntityHorse");
+        registerEntity(101, "Rabbit");
+        registerEntity(120, "Villager");
+        registerEntity(200, "EnderCrystal");
+
+        /* Potions */
+        registerPotion(-1, "empty");
+        registerPotion(0, "water");
+        registerPotion(64, "mundane");
+        registerPotion(32, "thick");
+        registerPotion(16, "awkward");
+
+        registerPotion(8198, "night_vision");
+        registerPotion(8262, "long_night_vision");
+
+        registerPotion(8206, "invisibility");
+        registerPotion(8270, "long_invisibility");
+
+        registerPotion(8203, "leaping");
+        registerPotion(8267, "long_leaping");
+        registerPotion(8235, "strong_leaping");
+
+        registerPotion(8195, "fire_resistance");
+        registerPotion(8259, "long_fire_resistance");
+
+        registerPotion(8194, "swiftness");
+        registerPotion(8258, "long_swiftness");
+        registerPotion(8226, "strong_swiftness");
+
+        registerPotion(8202, "slowness");
+        registerPotion(8266, "long_slowness");
+
+        registerPotion(8205, "water_breathing");
+        registerPotion(8269, "long_water_breathing");
+
+        registerPotion(8261, "healing");
+        registerPotion(8229, "strong_healing");
+
+        registerPotion(8204, "harming");
+        registerPotion(8236, "strong_harming");
+
+        registerPotion(8196, "poison");
+        registerPotion(8260, "long_poison");
+        registerPotion(8228, "strong_poison");
+
+        registerPotion(8193, "regeneration");
+        registerPotion(8257, "long_regeneration");
+        registerPotion(8225, "strong_regeneration");
+
+        registerPotion(8201, "strength");
+        registerPotion(8265, "long_strength");
+        registerPotion(8233, "strong_strength");
+
+        registerPotion(8200, "weakness");
+        registerPotion(8264, "long_weakness");
+
+    }
+
+
+    static void toClient(Item item) {
+        if (item != null) {
+            if (item.getId().equals("minecraft:spawn_egg") && item.getData() != 0) { // Monster Egg
+                CompoundTag tag = item.getTag();
+                if (tag == null) {
+                    tag = new CompoundTag("tag");
+                }
+                CompoundTag entityTag = new CompoundTag("EntityTag");
+                if (ENTTIY_ID_TO_NAME.containsKey((int) item.getData())) {
+                    StringTag id = new StringTag("id", ENTTIY_ID_TO_NAME.get((int) item.getData()));
+                    entityTag.put(id);
+                    tag.put(entityTag);
+                }
+                item.setTag(tag);
+                item.setData((short) 0);
+            }
+            if (item.getId().equals("minecraft:potion")) { // Potion
+                CompoundTag tag = item.getTag();
+                if (tag == null) {
+                    tag = new CompoundTag("tag");
+                }
+                if (item.getData() >= 16384) {
+                    item.setId("minecraft:splash_potion"); // splash id
+                    item.setData((short) (item.getData() - 8192));
+                }
+                String name = potionNameFromDamage(item.getData());
+                StringTag potion = new StringTag("Potion", "minecraft:" + name);
+                tag.put(potion);
+                item.setTag(tag);
+                item.setData((short) 0);
+            }
+        }
+    }
+
+
+
+    static void reversedToClient(Item item) {
+        if (item != null) {
+            if (item.getId().equals("minecraft:spawn_egg") && item.getData() == 0) { // Monster Egg
+                CompoundTag tag = item.getTag();
+                int data = 0;
+                if(tag != null) {
+                    if (tag.get("EntityTag") instanceof CompoundTag) {
+                        CompoundTag entityTag = tag.get("EntityTag");
+                        if (entityTag.get("id") instanceof StringTag) {
+                            StringTag id = entityTag.get("id");
+                            if (ENTTIY_NAME_TO_ID.containsKey(id.getValue()))
+                                data = ENTTIY_NAME_TO_ID.get(id.getValue());
+                        }
+                        tag.remove("EntityTag");
+                    }
+                }
+                item.setTag(tag);
+                item.setData((short) data);
+            }
+            if (item.getId().equals("minecraft:potion")) { // Potion
+                CompoundTag tag = item.getTag();
+                int data = 0;
+                if(tag != null) {
+                    if (tag.get("Potion") instanceof StringTag) {
+                        StringTag potion = tag.get("Potion");
+                        String potionName = potion.getValue().replace("minecraft:", "");
+                        if (POTION_NAME_TO_ID.containsKey(potionName)) {
+                            data = POTION_NAME_TO_ID.get(potionName);
+                        }
+                        tag.remove("Potion");
+                    }
+                }
+                item.setTag(tag);
+                item.setData((short) data);
+            }
+            // Splash potion
+            if (item.getId().equals("minecraft:splash_potion")) {
+                CompoundTag tag = item.getTag();
+                int data = 0;
+                item.setId("minecraft:potion"); // Potion
+                if(tag != null) {
+                    if (tag.get("Potion") instanceof StringTag) {
+                        StringTag potion = tag.get("Potion");
+                        String potionName = potion.getValue().replace("minecraft:", "");
+                        if (POTION_NAME_TO_ID.containsKey(potionName)) {
+                            data = POTION_NAME_TO_ID.get(potionName) + 8192;
+                        }
+                        tag.remove("Potion");
+                    }
+                }
+                item.setTag(tag);
+                item.setData((short) data);
+            }
+        }
+    }
+
+
+    private static String potionNameFromDamage(short damage) {
+        String cached = POTION_ID_TO_NAME.get((int) damage);
+        if (cached != null) {
+            return cached;
+        }
+        if (damage == 0) {
+            return "water";
+        }
+
+        int effect = damage & 0xF;
+        int name = damage & 0x3F;
+        boolean enhanced = (damage & 0x20) > 0;
+        boolean extended = (damage & 0x40) > 0;
+
+        boolean canEnhance = true;
+        boolean canExtend = true;
+
+        String id;
+        switch (effect) {
+            case 1:
+                id = "regeneration";
+                break;
+            case 2:
+                id = "swiftness";
+                break;
+            case 3:
+                id = "fire_resistance";
+                canEnhance = false;
+                break;
+            case 4:
+                id = "poison";
+                break;
+            case 5:
+                id = "healing";
+                canExtend = false;
+                break;
+            case 6:
+                id = "night_vision";
+                canEnhance = false;
+                break;
+
+            case 8:
+                id = "weakness";
+                canEnhance = false;
+                break;
+            case 9:
+                id = "strength";
+                break;
+            case 10:
+                id = "slowness";
+                canEnhance = false;
+                break;
+            case 11:
+                id = "leaping";
+                break;
+            case 12:
+                id = "harming";
+                canExtend = false;
+                break;
+            case 13:
+                id = "water_breathing";
+                canEnhance = false;
+                break;
+            case 14:
+                id = "invisibility";
+                canEnhance = false;
+                break;
+
+
+            default:
+                canEnhance = false;
+                canExtend = false;
+                switch (name) {
+                    case 0:
+                        id = "mundane";
+                        break;
+                    case 16:
+                        id = "awkward";
+                        break;
+                    case 32:
+                        id = "thick";
+                        break;
+                    default:
+                        id = "empty";
+                }
+        }
+
+        if (effect > 0) {
+            if (canEnhance && enhanced) {
+                id = "strong_" + id;
+            } else if (canExtend && extended) {
+                id = "long_" + id;
+            }
+        }
+
+        return id;
+    }
+
+    private static void registerEntity(Integer id, String name) {
+        ENTTIY_ID_TO_NAME.put(id, name);
+        ENTTIY_NAME_TO_ID.put(name, id);
+    }
+
+    private static void registerPotion(Integer id, String name) {
+        POTION_INDEX.put(id, POTION_ID_TO_NAME.size());
+        POTION_ID_TO_NAME.put(id, name);
+        POTION_NAME_TO_ID.put(name, id);
+    }
+}

src/main/java/me/dadus33/chatitem/utils/PacketUtils.java

@@ -0,0 +1,192 @@
+package me.dadus33.chatitem.utils;
+
+import java.util.HashMap;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+public class PacketUtils {
+
+	public static final String VERSION = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",")
+			.split(",")[3];
+	public static final String NMS_PREFIX;
+	public static final String OBC_PREFIX;
+
+	public static final Class<?> CRAFT_PLAYER_CLASS, CRAFT_SERVER_CLASS, CHAT_SERIALIZER, COMPONENT_CLASS;
+	
+	/**
+	 * This Map is to reduce Reflection action which take more ressources than just RAM action
+	 */
+	private static final HashMap<String, Class<?>> ALL_CLASS;
+	
+	static {
+		ALL_CLASS = new HashMap<>();
+		NMS_PREFIX = ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_17) ? "net.minecraft." : "net.minecraft.server." + VERSION + ".";
+		OBC_PREFIX = "org.bukkit.craftbukkit." + VERSION + ".";
+		CHAT_SERIALIZER = getNmsClass("IChatBaseComponent$ChatSerializer", "network.chat.", "ChatSerializer");
+		COMPONENT_CLASS = getNmsClass("IChatBaseComponent", "network.chat.");
+		CRAFT_PLAYER_CLASS = getObcClass("entity.CraftPlayer");
+		CRAFT_SERVER_CLASS = getObcClass("CraftServer");
+	}
+	
+	/**
+	 * Get the Class in NMS, with a processing reducer
+	 * 
+	 * @param name of the NMS class (in net.minecraft.server package ONLY, because it's NMS)
+	 * @return clazz the searched class
+	 */
+	public static Class<?> getNmsClass(String name, String packagePrefix, String... alias){
+		return ALL_CLASS.computeIfAbsent(name, (a) -> {
+			String fullPrefix = NMS_PREFIX + (ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_17) ? packagePrefix : "");
+			try {
+				Class<?> clazz = Class.forName(fullPrefix + name);
+				if(clazz != null)
+					return clazz;
+			} catch (ClassNotFoundException e) {
+				if(alias.length == 0)
+					e.printStackTrace(); // no alias, print error
+				// else ignore and go check for alias
+			}
+			
+			for(String className : alias) {
+				try {
+					Class<?> clazz = Class.forName(fullPrefix + className);
+					if(clazz != null)
+						return clazz;
+				} catch (ClassNotFoundException e) {
+					if(className == alias[alias.length - 1]) // if it's last alias, print error
+						e.printStackTrace();
+				}
+			}
+			return null;
+		});
+	}
+		
+	/**
+	 * Get the Class in NMS, with a processing reducer
+	 * 
+	 * @param name of the NMS class (in net.minecraft.server package ONLY, because it's NMS)
+	 * @return clazz the searched class
+	 */
+	public static Class<?> getObcClass(String name, String... alias){
+		return ALL_CLASS.computeIfAbsent(name, (a) -> {
+			try {
+				Class<?> clazz = Class.forName(OBC_PREFIX + name);
+				if(clazz != null)
+					return clazz;
+			} catch (ClassNotFoundException e) {
+				if(alias.length == 0)
+					e.printStackTrace(); // no alias, print error
+				// else ignore and go check for alias
+			}
+			
+			for(String className : alias) {
+				try {
+					Class<?> clazz = Class.forName(OBC_PREFIX + className);
+					if(clazz != null)
+						return clazz;
+				} catch (ClassNotFoundException e) {
+					if(className == alias[alias.length - 1]) // if it's last alias, print error
+						e.printStackTrace();
+				}
+			}
+			return null;
+		});
+	}
+	
+	/**
+	 * Get the current player ping
+	 * 
+	 * @param p the player
+	 * @return the player ping
+	 */
+	public static int getPing(Player p) {
+		try {
+			Object entityPlayer = getEntityPlayer(p);
+			return entityPlayer.getClass().getField("ping").getInt(entityPlayer);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return 0;
+	}
+
+	/**
+	 * Get NMS player connection of specified player
+	 * 
+	 * @param p Player of which we want to get the player connection
+	 * @return the NMS player connection
+	 */
+	public static Object getPlayerConnection(Player p) {
+		try {
+			Object entityPlayer = getEntityPlayer(p);
+			if(ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_17))
+				return entityPlayer.getClass().getField("b").get(entityPlayer);
+			else
+				return entityPlayer.getClass().getField("playerConnection").get(entityPlayer);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+	
+	/**
+	 * Get NMS entity player of specified one
+	 * 
+	 * @param p the player that we want the NMS entity player
+	 * @return the entity player
+	 */
+	public static Object getEntityPlayer(Player p) {
+		try {
+			Object craftPlayer = CRAFT_PLAYER_CLASS.cast(p);
+			return craftPlayer.getClass().getMethod("getHandle").invoke(craftPlayer);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+	
+	public static String getNmsEntityName(Object nmsEntity) {
+		try {
+			if(ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_13)) {
+				Object chatBaseComponent = getNmsClass("Entity", "world.entity.").getDeclaredMethod("getDisplayName").invoke(nmsEntity);
+				return (String) getNmsClass("IChatBaseComponent", "network.chat.").getDeclaredMethod("getString").invoke(chatBaseComponent);
+			} else {
+				return (String) getNmsClass("Entity", "world.entity.").getDeclaredMethod("getName").invoke(nmsEntity);
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * Send the packet to the specified player
+	 * 
+	 * @param p which will receive the packet
+	 * @param packet the packet to sent
+	 */
+	public static void sendPacket(Player p, Object packet) {
+		try {
+			Object playerConnection = getPlayerConnection(p);
+			playerConnection.getClass().getMethod("sendPacket", getNmsClass("Packet", "network.protocol.")).invoke(playerConnection, packet);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+	
+	/**
+	 * Get NMS entity player of specified one
+	 * 
+	 * @param p the player that we want the NMS entity player
+	 * @return the entity player
+	 */
+	public static Object getCraftServer() {
+		try {
+			Object craftServer = CRAFT_SERVER_CLASS.cast(Bukkit.getServer());
+			return craftServer.getClass().getMethod("getHandle").invoke(craftServer);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+}

src/main/java/me/dadus33/chatitem/utils/ProtocolVersion.java

@@ -0,0 +1,121 @@
+package me.dadus33.chatitem.utils;
+
+import java.net.InetSocketAddress;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+import me.dadus33.chatitem.ChatItem;
+
+public enum ProtocolVersion {
+	
+	// http://wiki.vg/Protocol_version_numbers
+	V1_7(0, 5, 0),
+	V1_8(6, 47, 1),
+	V1_9(49, 110, 2), // 1.9.X - Starts with 49 as 48 was an april fools update
+	V1_10(201, 210, 3), // 1.10.X - Starts with 201 because why not.
+	V1_11(301, 316, 4),
+	V1_12(317, 340, 5),
+	V1_13(341, 440, 6),
+	V1_14(100, 441, 500),
+	V1_15(100, 550, 578),
+	V1_16(100, 700, 754),
+	V1_17(100, 755, 756),
+	V1_18(100, 757, 800),
+	V1_19(100, 801, 1000),
+	HIGHER(Integer.MAX_VALUE, -1, Integer.MAX_VALUE);
+
+	// Latest version should always have the upper limit set to Integer.MAX_VALUE so
+	// I don't have to update the plugin for every minor protocol change
+
+	public final int MIN_VER;
+	public final int MAX_VER;
+	public final int index; // Represents how new the version is (0 - extremely old)
+
+	private static final ProtocolVersion SERVER_VERSION;
+	public static final String BUKKIT_VERSION;
+
+	static {
+		BUKKIT_VERSION = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
+		SERVER_VERSION = getVersionByName(BUKKIT_VERSION);
+	}
+
+	ProtocolVersion(int min, int max, int index) {
+		this.MIN_VER = min;
+		this.MAX_VER = max;
+		this.index = index;
+	}
+
+	public boolean isNewerThan(ProtocolVersion other) {
+		return index > other.index;
+	}
+	
+	public boolean isNewerOrEquals(ProtocolVersion other) {
+		return index >= other.index;
+	}
+
+	public static ProtocolVersion getVersionByName(String name) {
+		for (ProtocolVersion v : ProtocolVersion.values())
+			if (name.toLowerCase().startsWith(v.name().toLowerCase()))
+				return v;
+		return HIGHER;
+	}
+
+	public static ProtocolVersion getVersion(int protocolVersion) {
+		for (ProtocolVersion ver : ProtocolVersion.values()) {
+			if (protocolVersion >= ver.MIN_VER && protocolVersion <= ver.MAX_VER) {
+				return ver;
+			}
+		}
+		return HIGHER;
+	}
+
+	public static ProtocolVersion getServerVersion() {
+		return SERVER_VERSION;
+	}
+
+	public static void remapIds(int server, int player, Item item) {
+		if (areIdsCompatible(server, player)) {
+			return;
+		}
+		if ((server >= V1_9.MIN_VER && player <= V1_8.MAX_VER) || (player >= V1_9.MIN_VER && server <= V1_8.MAX_VER)) {
+			if ((server >= V1_9.MIN_VER && player <= V1_8.MAX_VER)) {
+				ItemRewriter_1_9_TO_1_8.reversedToClient(item);
+				return;
+			}
+			ItemRewriter_1_9_TO_1_8.toClient(item);
+			return;
+		}
+		if ((server <= V1_10.MAX_VER && player >= V1_11.MIN_VER)
+				|| (player <= V1_10.MAX_VER && server >= V1_11.MIN_VER)) {
+			if (server <= V1_10.MAX_VER && player >= V1_11.MIN_VER) {
+				ItemRewriter_1_11_TO_1_10.toClient(item);
+			} else {
+				ItemRewriter_1_11_TO_1_10.reverseToClient(item);
+			}
+		}
+	}
+
+	public static boolean areIdsCompatible(int version1, int version2) {
+		if ((version1 >= V1_9.MIN_VER && version2 <= V1_8.MAX_VER)
+				|| (version2 >= V1_9.MIN_VER && version1 <= V1_8.MAX_VER)) {
+			return false;
+		}
+		if ((version1 <= V1_10.MAX_VER && version2 >= V1_11.MIN_VER)
+				|| (version1 <= V1_10.MAX_VER && version2 >= V1_11.MIN_VER)) {
+			return false;
+		}
+		return true;
+	}
+	
+	public static int getClientVersion(Player p) {
+		return ChatItem.getInstance().getPlayerVersionAdapter().getProtocolVersion(p);
+	}
+
+	public static String stringifyAdress(InetSocketAddress address) {
+		String port = String.valueOf(address.getPort());
+		String ip = address.getAddress().getHostAddress();
+		return ip + ":" + port;
+	}
+
+}

src/main/java/me/dadus33/chatitem/utils/Reflect.java

@@ -1,56 +1,13 @@
 package me.dadus33.chatitem.utils;
 
-import org.bukkit.Bukkit;
-
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
+import java.util.Arrays;
+
+import me.dadus33.chatitem.ChatItem;
 
 public class Reflect {
 
-
-    private static String versionString;
-
-
-    private static String getVersion() {
-        if (versionString == null) {
-            String name = Bukkit.getServer().getClass().getPackage().getName();
-            versionString = name.substring(name.lastIndexOf('.') + 1) + ".";
-        }
-
-        return versionString;
-    }
-
-    public static Class<?> getNMSClass(String nmsClassName) {
-
-        String clazzName = "net.minecraft.server." + getVersion() + nmsClassName;
-        Class<?> clazz;
-
-        try {
-            clazz = Class.forName(clazzName);
-        } catch (Throwable t) {
-            t.printStackTrace();
-            return null;
-        }
-
-        return clazz;
-    }
-
-
-    public static Class<?> getOBCClass(String obcClassName) {
-
-        String clazzName = "org.bukkit.craftbukkit." + getVersion() + obcClassName;
-        Class<?> clazz;
-
-        try {
-            clazz = Class.forName(clazzName);
-        } catch (Throwable t) {
-            t.printStackTrace();
-            return null;
-        }
-
-        return clazz;
-    }
-
-
     public static Method getMethod(Class<?> clazz, String methodName, Class<?>... params) {
         try {
             return clazz.getMethod(methodName, params);
@@ -60,4 +17,18 @@ public class Reflect {
         }
     }
 
+    public static Field getField(Class<?> clazz, String... fieldNames){
+    	for(String field : fieldNames) {
+	        try{
+	            Field f = clazz.getDeclaredField(field);
+	            f.setAccessible(true);
+	            return f;
+	        } catch (NoSuchFieldException e) {
+	        	// go to next
+	        }
+    	}
+    	ChatItem.getInstance().getLogger().severe("Failed to find field: " + Arrays.asList(fieldNames) + " in class: " + clazz.getCanonicalName());
+        return null;
+    }
+
 }

src/main/java/me/dadus33/chatitem/utils/ReflectionUtils.java

@@ -0,0 +1,77 @@
+package me.dadus33.chatitem.utils;
+
+import java.lang.reflect.Field;
+
+public class ReflectionUtils {
+	
+	public static Object getPrivateField(Object object, String field)
+			throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException {
+		Field objectField = object.getClass().getDeclaredField(field);
+		objectField.setAccessible(true);
+		return objectField.get(object);
+	}
+	
+	public static void setField(Object src, String fieldName, Object value) {
+		try {
+			Field field = src.getClass().getDeclaredField(fieldName);
+			field.setAccessible(true);
+			field.set(src, value);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+	
+	/**
+	 * Get the specified field name in the object source
+	 * 
+	 * @param source where we will find the field
+	 * @param field the name of the field
+	 * @return the requested field
+	 */
+	public static Object getField(Object source, String field) {
+		try {
+			Field f = source.getClass().getDeclaredField(field);
+			f.setAccessible(true);
+			return f.get(source);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+	
+	/**
+	 * Call method. Return the method return.
+	 * 
+	 * @param source the object where we want to run the method
+	 * @param method the name of the method to call
+	 * @return the return of the method called
+	 */
+	public static Object callMethod(Object source, String method) {
+		try {
+			return source.getClass().getDeclaredMethod(method).invoke(source);
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * Get the first field which have the searching for class type
+	 * 
+	 * @param from the object where we will try to find the field
+	 * @param clazz the class that have to define the field
+	 * @param searchingFor the class of the required field
+	 * @return the field (or null if not found)
+	 * @throws Exception if something gone wrong
+	 */
+	@SuppressWarnings("unchecked")
+	public static <T> T getFirstWith(Object from, Class<?> clazz, Class<T> searchingFor) throws Exception {
+		for (Field f : clazz.getDeclaredFields()) {
+			if (f.getType().equals(searchingFor)) {
+				f.setAccessible(true);
+				return (T) f.get(from);
+			}
+		}
+		return null;
+	}
+}

src/main/java/me/dadus33/chatitem/utils/Storage.java

@@ -16,19 +16,38 @@ import java.util.logging.Level;
 
 public class Storage {
 
+    private FileConfiguration conf;
     public final HashMap<String, HashMap<Short, String>> TRANSLATIONS = new HashMap<>();
-    public final List<String> PLACEHOLDERS;
-    public final String NAME_FORMAT;
-    public final String AMOUNT_FORMAT;
     public final Boolean COLOR_IF_ALREADY_COLORED;
     public final Boolean FORCE_ADD_AMOUNT;
+    public final Boolean LET_MESSAGE_THROUGH;
     public final Boolean DENY_IF_NO_ITEM;
+    public final Boolean HAND_DISABLED;
+    public final Boolean SHOW_NO_PERM_NORMAL;
+    public final Boolean SHOW_NO_PERM_COMMAND;
+    public final String HAND_NAME;
+    public final String NAME_FORMAT;
+    public final String AMOUNT_FORMAT;
+    public final String NO_PERMISSION_MESSAGE;
     public final String DENY_MESSAGE;
+    public final String LIMIT_MESSAGE;
     public final String RELOAD_MESSAGE;
-    final Integer CONFIG_VERSION;
-    public final List<Command> ALLOWED_COMMANDS = new ArrayList<>();
+    public final String COOLDOWN_MESSAGE;
+    public final String SECONDS;
+    public final String MINUTES;
+    public final String HOURS;
+    private final Integer CONFIG_VERSION;
+    public final Long COOLDOWN;
+    public final Integer LIMIT;
+    public final List<Command> ALLOWED_PLUGIN_COMMANDS = new ArrayList<>();
+    public final List<String> ALLOWED_DEFAULT_COMMANDS = new ArrayList<>();
+    public final List<String> PLACEHOLDERS;
+    public final List<String> HAND_TOOLTIP;
 
-    public Storage(FileConfiguration conf) {
+    public Storage(FileConfiguration cnf) {
+        this.conf = cnf;
+        CONFIG_VERSION = conf.getInt("config-version");
+        checkConfigVersion();
         Set<String> keys = conf.getConfigurationSection("Translations").getKeys(false);
         for (String key : keys) {
             HashMap<Short, String> entry = new HashMap<>();
@@ -40,42 +59,68 @@ public class Storage {
 
             TRANSLATIONS.put(key, entry);
         }
-        CONFIG_VERSION = conf.getInt("config-version");
-        List<String> added = conf.getStringList("placeholders");
+        COOLDOWN = conf.getLong("General.cooldown");
+        LIMIT = conf.getInt("General.limit");
+        List<String> added = conf.getStringList("General.placeholders");
         PLACEHOLDERS = ImmutableList.copyOf(added);
-        NAME_FORMAT = color(conf.getString("name-format"));
-        AMOUNT_FORMAT = color(conf.getString("amount-format"));
-        COLOR_IF_ALREADY_COLORED = conf.getBoolean("color-if-already-colored");
-        FORCE_ADD_AMOUNT = conf.getBoolean("force-add-amount");
-        DENY_IF_NO_ITEM = conf.getBoolean("deny-if-no-item");
-        DENY_MESSAGE = color(conf.getString("deny-message"));
-        RELOAD_MESSAGE = color(conf.getString("reload-success"));
-        final List<String> cmds = conf.getStringList("commands");
-        Bukkit.getScheduler().runTaskLaterAsynchronously(ChatItem.getInstance(), new Runnable() {
-            @Override
-            public void run() {
-                for(String s : cmds){
-                    Command c = Bukkit.getPluginCommand(s);
-                    if(c!=null) {
-                        ALLOWED_COMMANDS.add(Bukkit.getPluginCommand(s));
-                    }
-                    else
-                        ChatItem.getInstance().getLogger().log(Level.WARNING, ChatColor.RED.toString().concat("Unknown command ")
-                                .concat(s).concat(" found in config! Ignoring occurrence..."));
+        NAME_FORMAT = color(conf.getString("General.name-format"));
+        AMOUNT_FORMAT = color(conf.getString("General.amount-format"));
+        COLOR_IF_ALREADY_COLORED = conf.getBoolean("General.color-if-already-colored");
+        LET_MESSAGE_THROUGH = conf.getBoolean("General.let-message-through");
+        FORCE_ADD_AMOUNT = conf.getBoolean("General.force-add-amount");
+        DENY_IF_NO_ITEM = conf.getBoolean("General.deny-if-no-item");
+        HAND_DISABLED = conf.getBoolean("General.hand.disabled");
+        SHOW_NO_PERM_NORMAL = conf.getBoolean("General.show-no-permission-message.normal");
+        SHOW_NO_PERM_COMMAND = conf.getBoolean("General.show-no-permission-message.command");
+        DENY_MESSAGE = color(conf.getString("Messages.deny-message"));
+        HAND_NAME = color(conf.getString("General.hand.name"));
+        LIMIT_MESSAGE = color(conf.getString("Messages.limit-message"));
+        RELOAD_MESSAGE = color(conf.getString("Messages.reload-success"));
+        NO_PERMISSION_MESSAGE = color(conf.getString("Messages.no-permission"));
+        COOLDOWN_MESSAGE = color(conf.getString("Messages.cooldown-message"));
+        SECONDS = color(conf.getString("Messages.seconds"));
+        MINUTES = color(conf.getString("Messages.minutes"));
+        HOURS = color(conf.getString("Messages.hours"));
+        HAND_TOOLTIP = conf.getStringList("General.hand.tooltip");
+        colorStringList(HAND_TOOLTIP);
+        final List<String> cmds = conf.getStringList("General.commands");
+        Bukkit.getScheduler().runTaskLaterAsynchronously(ChatItem.getInstance(), () -> {
+            for(String s : cmds){
+                Command c = Bukkit.getPluginCommand(s);
+                if(c!=null) {
+                    ALLOWED_PLUGIN_COMMANDS.add(c);
+                }
+                else {
+                    ALLOWED_DEFAULT_COMMANDS.add(s);
                 }
             }
         }, 100L);
 
     }
 
-
     private static String color(String s) {
         return ChatColor.translateAlternateColorCodes('&', s);
     }
 
+    private void checkConfigVersion() {
+        int latestVersion = ChatItem.CFG_VER;
+        if (latestVersion != CONFIG_VERSION) {
+            Bukkit.getLogger().log(Level.WARNING, ChatColor.RED + "ChatItem detected an older or invalid configuration file. Replacing it with the default config...");
+            performOverwrite();
+            conf = ChatItem.getInstance().getConfig();
+            Bukkit.getLogger().log(Level.WARNING, ChatColor.RED + "Replacement complete!");
+        }
+    }
 
-    void performOverwrite() {
+
+    private void performOverwrite() {
         ChatItem.getInstance().saveResource("config.yml", true);
     }
 
+    private static void colorStringList(List<String> input){
+        for(int i=0; i<input.size(); ++i){
+            input.set(i, color(input.get(i)));
+        }
+    }
+
 }

src/main/java/me/dadus33/chatitem/utils/Utils.java

@@ -0,0 +1,66 @@
+package me.dadus33.chatitem.utils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+
+public class Utils {
+
+	public static final String VERSION = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",")
+			.split(",")[3];
+
+	public static String coloredMessage(String msg) {
+		return ChatColor.translateAlternateColorCodes('&', msg);
+	}
+
+	public static List<String> coloredMessage(String... messages) {
+		List<String> ret = new ArrayList<>();
+		for (String message : messages) {
+			ret.add(coloredMessage(message));
+		}
+		return ret;
+	}
+
+	public static List<Player> getOnlinePlayers() {
+		List<Player> list = new ArrayList<>();
+		try {
+			Class<?> mcServer = PacketUtils.getNmsClass("MinecraftServer", "server.");
+			Object server = mcServer.getMethod("getServer").invoke(mcServer);
+			Object craftServer = server.getClass().getField("server").get(server);
+			Object getted = craftServer.getClass().getMethod("getOnlinePlayers").invoke(craftServer);
+			if (getted instanceof Player[])
+				for (Player obj : (Player[]) getted)
+					list.add(obj);
+			else if (getted instanceof List)
+				for (Object obj : (List<?>) getted)
+					list.add((Player) obj);
+			else
+				System.out.println("Unknow getOnlinePlayers");
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return list;
+	}
+
+	/**
+	 * Get the current player ping
+	 * 
+	 * @param p the player
+	 * @return the player ping
+	 */
+	public static int getPing(Player p) {
+		try {
+			Object entityPlayer = PacketUtils.getEntityPlayer(p);
+			if(ProtocolVersion.getServerVersion().isNewerOrEquals(ProtocolVersion.V1_17))
+				return entityPlayer.getClass().getField("e").getInt(entityPlayer);
+			else
+				return entityPlayer.getClass().getField("ping").getInt(entityPlayer);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return 0;
+	}
+}

src/main/resources/plugin.yml

@@ -1,8 +1,11 @@
 name: ChatItem
 main: me.dadus33.chatitem.ChatItem
 version: ${project.version}
-depend: [ProtocolLib]
-author: dadus33
+
+softdepend: [ViaVersion, ProtocolSupport, ProtocolLib]
+authors: [dadus33, WOLFI3654, Elikill58]
+api-version: 1.13
+
 commands:
   cireload:
     description: Reload the ChatItem config.
@@ -14,4 +17,7 @@ permissions:
     default: op
   chatitem.use:
     description: Allows your messages to be parsed by the plugin
-    default: true
+    default: op
+  chatitem.ignore-cooldown:
+    description: Allows you to ignore cooldowns (if enabled)
+    default: op