Modify chat manager to give plugin ability to change it

src/main/java/emu/grasscutter/game/managers/ChatManager.java → src/main/java/emu/grasscutter/game/managers/ChatManager/ChatManager.java

-package emu.grasscutter.game.managers;
+package emu.grasscutter.game.managers.ChatManager;
 
 import emu.grasscutter.command.CommandMap;
 import emu.grasscutter.game.player.Player;
@@ -10,7 +10,7 @@ import emu.grasscutter.server.packet.send.PacketPrivateChatNotify;
 import java.util.Arrays;
 import java.util.List;
 
-public class ChatManager {
+public class ChatManager implements ChatManagerHandler {
 	static final List<Character> PREFIXES = Arrays.asList('/', '!');
 	
 	private final GameServer server;

src/main/java/emu/grasscutter/game/managers/ChatManager/ChatManagerHandler.java

+package emu.grasscutter.game.managers.ChatManager;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.server.game.GameServer;
+
+public interface ChatManagerHandler {
+    GameServer getServer();
+    void sendPrivateMessage(Player player, int targetUid, String message);
+    void sendPrivateMessage(Player player, int targetUid, int emote);
+    void sendTeamMessage(Player player, int channel, String message);
+    void sendTeamMessage(Player player, int channel, int icon);
+}

src/main/java/emu/grasscutter/server/game/GameServer.java

@@ -10,12 +10,12 @@ import emu.grasscutter.game.drop.DropManager;
 import emu.grasscutter.game.dungeons.DungeonManager;
 import emu.grasscutter.game.expedition.ExpeditionManager;
 import emu.grasscutter.game.gacha.GachaManager;
-import emu.grasscutter.game.managers.ChatManager;
+import emu.grasscutter.game.managers.ChatManager.ChatManager;
+import emu.grasscutter.game.managers.ChatManager.ChatManagerHandler;
 import emu.grasscutter.game.managers.InventoryManager;
 import emu.grasscutter.game.managers.MultiplayerManager;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.quest.ServerQuestHandler;
-import emu.grasscutter.game.quest.handlers.QuestBaseHandler;
 import emu.grasscutter.game.shop.ShopManager;
 import emu.grasscutter.game.tower.TowerScheduleManager;
 import emu.grasscutter.game.world.World;
@@ -44,7 +44,7 @@ public final class GameServer extends KcpServer {
 	private final Map<Integer, Player> players;
 	private final Set<World> worlds;
 	
-	private final ChatManager chatManager;
+	private ChatManagerHandler chatManager;
 	private final InventoryManager inventoryManager;
 	private final GachaManager gachaManager;
 	private final ShopManager shopManager;
@@ -107,9 +107,12 @@ public final class GameServer extends KcpServer {
 		return worlds;
 	}
 
-	public ChatManager getChatManager() {
+	public ChatManagerHandler getChatManager() {
 		return chatManager;
 	}
+	public void setChatManager(ChatManagerHandler chatManager) {
+		this.chatManager = chatManager;
+	}
 
 	public InventoryManager getInventoryManager() {
 		return inventoryManager;