feat: add LuckPerms support to chat handler

build.gradle

@@ -26,17 +26,23 @@ fabricApi {
         client = true
     }
 }
-
 repositories {
+    mavenCentral()
+    maven {
+        name = "Modrinth"
+        url = "https://api.modrinth.com/maven"
+    }
+    maven {
+        name = "luckperms"
+        url = "https://repo.luckperms.net/"
+    }
 }
-
 dependencies {
     minecraft "com.mojang:minecraft:${project.minecraft_version}"
     implementation "net.fabricmc:fabric-loader:${project.loader_version}"
-
     implementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+    compileOnly "net.luckperms:api:5.4"
 }
-
 processResources {
     inputs.property "version", project.version
     inputs.property "minecraft_version", project.minecraft_version

out/client/resources/localchat.client.mixins.json

@@ -0,0 +1,14 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "org.examp.john.mixin.client",
+  "compatibilityLevel": "JAVA_25",
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "overwrites": {
+    "requireAnnotations": true
+  }
+}

out/production/resources/fabric.mod.json

@@ -0,0 +1,35 @@
+{
+  "schemaVersion": 1,
+  "id": "localchat",
+  "version": "${version}",
+  "name": "localchat",
+  "description": "",
+  "authors": [],
+  "contact": {},
+  "license": "All-Rights-Reserved",
+  "icon": "assets/localchat/icon.png",
+  "environment": "*",
+  "entrypoints": {
+    "fabric-datagen": [
+      "org.examp.john.client.LocalchatDataGenerator"
+    ],
+    "client": [
+      "org.examp.john.client.LocalchatClient"
+    ],
+    "main": [
+      "org.examp.john.Localchat"
+    ]
+  },
+  "mixins": [
+    "localchat.mixins.json",
+    {
+      "config": "localchat.client.mixins.json",
+      "environment": "client"
+    }
+  ],
+  "depends": {
+    "fabricloader": ">=${loader_version}",
+    "fabric-api": "*",
+    "minecraft": "${minecraft_version}"
+  }
+}

out/production/resources/localchat.mixins.json

@@ -0,0 +1,14 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "org.examp.john.mixin",
+  "compatibilityLevel": "JAVA_25",
+  "mixins": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "overwrites": {
+    "requireAnnotations": true
+  }
+}

src/main/java/org/examp/john/ChatHandler.java

@@ -1,19 +1,23 @@
 package org.examp.john;
 
 import net.fabricmc.fabric.api.message.v1.ServerMessageEvents;
+import net.luckperms.api.LuckPerms;
+import net.luckperms.api.LuckPermsProvider;
+import net.luckperms.api.model.user.User;
 import net.minecraft.ChatFormatting;
 import net.minecraft.network.chat.Component;
+import net.minecraft.network.chat.MutableComponent;
 import net.minecraft.server.MinecraftServer;
-import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
 
 import java.util.List;
 
 public class ChatHandler {
-    public static void register() {
 
+    public static void register() {
         final String prefix = "!";
-        final float LOCAL_CHAT_RADIUS = 50;
+        final float LOCAL_CHAT_RADIUS = 100;
 
         ServerMessageEvents.ALLOW_CHAT_MESSAGE.register((message, sender, params) -> {
             String text = message.signedContent();
@@ -21,20 +25,39 @@ public class ChatHandler {
             ServerLevel serverLevel = sender.level();
             MinecraftServer server = serverLevel.getServer();
             List<ServerPlayer> players = server.getPlayerList().getPlayers();
-            String nickmane = sender.getDisplayName().getString();
-            if (text.startsWith(prefix)) {
 
+            String playerPrefix = "";
+            try {
+                LuckPerms luckPerms = LuckPermsProvider.get();
+                User user = luckPerms.getUserManager().getUser(sender.getUUID());
+                if (user != null) {
+                    String metaPrefix = user.getCachedData().getMetaData().getPrefix();
+                    if (metaPrefix != null) {
+                        playerPrefix = metaPrefix;
+                    }
+                }
+            } catch (Throwable ignored) {
+            }
+
+            MutableComponent formattedPrefix = Component.literal(playerPrefix.replace("&", "§"));
+            MutableComponent formattedName = Component.empty()
+                    .append(formattedPrefix)
+                    .append(sender.getDisplayName());
+
+            if (text.startsWith(prefix)) {
                 String actualMessage = text.substring(1).trim();
-                Component globalMessage = Component.literal(nickmane + ": " + actualMessage);
+                Component globalMessage = Component.empty()
+                        .append(formattedName)
+                        .append(Component.literal(": " + actualMessage));
 
                 for (ServerPlayer player : players) {
                     player.sendSystemMessage(globalMessage);
                 }
 
             } else {
-
-                Component localMessage = Component.literal(nickmane + ": ")
-                                .append(Component.literal(text)).withStyle(ChatFormatting.GRAY);
+                Component localMessage = Component.empty()
+                        .append(formattedName)
+                        .append(Component.literal(": " + text).withStyle(ChatFormatting.GRAY));
 
                 for (ServerPlayer player : players) {
                     if (player.level() == serverLevel && player.distanceTo(sender) <= LOCAL_CHAT_RADIUS) {