Refactored PlayerCommands, added commands and more

Added player "Help" command, added server "sendmsg" command, changed getAcccountByPlayerID to public in DatabaseHelper, and allowed player commands to be submitted with "/" and "!"

src/main/java/emu/grasscutter/commands/PlayerCommands.java

@@ -4,6 +4,7 @@ import java.lang.reflect.Modifier;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 
 import emu.grasscutter.data.GenshinData;
 import emu.grasscutter.data.def.ItemData;
@@ -23,7 +24,9 @@ import emu.grasscutter.server.packet.send.PacketItemAddHintNotify;
 import emu.grasscutter.utils.Position;
 
 public class PlayerCommands {
-	private static HashMap<String, PlayerCommand> list = new HashMap<String, PlayerCommand>();
+	private static HashMap<String, PlayerCommand> commandList = new HashMap<String, PlayerCommand>();
+	private static HashMap<String, PlayerCommand> commandAliasList = new HashMap<String, PlayerCommand>();
+
 	
 	static {
 		try {
@@ -36,22 +39,19 @@ public class PlayerCommands {
 			    	
 			    	if (commandAnnotation != null) {
 			    		command.setLevel(commandAnnotation.gmLevel());
-			    		for (String alias : commandAnnotation.aliases()) {
+						command.setHelpText(commandAnnotation.helpText());
+						for (String alias : commandAnnotation.aliases()) {
 			    			if (alias.length() == 0) {
 			    				continue;
 			    			}
-			    			
-			    			String commandName = "!" + alias;
-					    	list.put(commandName, command);
-					    	commandName = "/" + alias;
-					    	list.put(commandName, command);
+
+							String commandName = alias;
+							commandAliasList.put(commandName, command);
 			    		}
 			    	}
-			    	
-			    	String commandName = "!" + cls.getSimpleName().toLowerCase();
-			    	list.put(commandName, command);
-			    	commandName = "/" + cls.getSimpleName().toLowerCase();
-			    	list.put(commandName, command);
+
+			    	String commandName = cls.getSimpleName().toLowerCase();
+			    	commandList.put(commandName, command);
 			    }
 		
 			}
@@ -67,33 +67,54 @@ public class PlayerCommands {
 		if (split.length == 0) {
 			return;
 		}
+
+		String first = split[0].toLowerCase().substring(1);
+		PlayerCommand c = PlayerCommands.commandList.get(first);
+		PlayerCommand a = PlayerCommands.commandAliasList.get(first);
 		
-		//
-		String first = split[0].toLowerCase();
-		PlayerCommand c = PlayerCommands.list.get(first);
-		
-		if (c != null) {
+		if (c != null || a != null) {
+			PlayerCommand cmd = c != null ? c : a;
 			// Level check
-			if (player.getGmLevel() < c.getLevel()) {
+			if (player.getGmLevel() < cmd.getLevel()) {
 				return;
 			}
 			// Execute
 			int len = Math.min(first.length() + 1, msg.length());
-			c.execute(player, msg.substring(len));
+			cmd.execute(player, msg.substring(len));
 		}
 	}
 	
 	public static abstract class PlayerCommand {
 		// GM level required to use this command
 		private int level;
+		private String helpText;
+
 		protected int getLevel() { return this.level; }
 		protected void setLevel(int minLevel) { this.level = minLevel; }
-		
+
+		protected String getHelpText() { return this.helpText; }
+		protected void setHelpText(String helpText) { this.helpText = helpText; }
+
 		// Main
 		public abstract void execute(GenshinPlayer player, String raw);
 	}
 	
 	// ================ Commands ================
+
+	@Command(aliases = {"h"}, helpText = "Shows this command")
+	public static class Help extends PlayerCommand {
+
+		@Override
+		public void execute(GenshinPlayer player, String raw) {
+			String helpMessage = "Grasscutter Commands: ";
+			for (Map.Entry<String, PlayerCommand> cmd : commandList.entrySet()) {
+
+				helpMessage += "\n" + cmd.getKey() + " - " + cmd.getValue().helpText;
+			}
+
+			player.dropMessage(helpMessage);
+		}
+	}
 	
 	@Command(aliases = {"g", "item", "additem"}, helpText = "/give [item id] [count] - Gives {count} amount of {item id}")
 	public static class Give extends PlayerCommand {

src/main/java/emu/grasscutter/commands/ServerCommands.java

@@ -1,9 +1,11 @@
 package emu.grasscutter.commands;
 
 import java.lang.reflect.Modifier;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.data.GenshinData;
@@ -67,6 +69,35 @@ public class ServerCommands {
 			Grasscutter.getLogger().info("Reload complete.");
 		}
 	}
+
+	public static class sendMsg extends ServerCommand {
+		@Override
+		public void execute(String raw) {
+			List<String> split = Arrays.asList(raw.split(" "));
+
+			if (split.size() < 2) {
+				Grasscutter.getLogger().error("Invalid amount of args");
+				return;
+			}
+
+			String playerID = split.get(0);
+			String message = split.stream().skip(1).collect(Collectors.joining(" "));
+
+
+			emu.grasscutter.game.Account account = DatabaseHelper.getAccountByPlayerId(Integer.parseInt(playerID));
+			if (account != null) {
+				GenshinPlayer player = Grasscutter.getGameServer().getPlayerById(Integer.parseInt(playerID));
+				if(player != null) {
+					player.dropMessage(message);
+					Grasscutter.getLogger().info(String.format("Successfully sent message to %s: %s", playerID, message));
+				} else {
+					Grasscutter.getLogger().error("Player not online");
+				}
+			} else {
+				Grasscutter.getLogger().error(String.format("Player %s does not exist", playerID));
+			}
+		}
+	}
 	
 	public static class Account extends ServerCommand {
 		@Override

src/main/java/emu/grasscutter/database/DatabaseHelper.java

@@ -95,7 +95,7 @@ public class DatabaseHelper {
 		return cursor.next();
 	}
 	
-	private static Account getAccountByPlayerId(int playerId) {
+	public static Account getAccountByPlayerId(int playerId) {
 		MorphiaCursor<Account> cursor = DatabaseManager.getDatastore().createQuery(Account.class).field("playerId").equal(playerId).find(FIND_ONE);
 		if (!cursor.hasNext()) return null;
 		return cursor.next();

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

@@ -1,5 +1,6 @@
 package emu.grasscutter.game.managers;
 
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.commands.PlayerCommands;
 import emu.grasscutter.game.GenshinPlayer;
 import emu.grasscutter.net.packet.GenshinPacket;
@@ -25,7 +26,7 @@ public class ChatManager {
 		}
 				
 		// Check if command
-		if (message.charAt(0) == '!') {
+		if (message.charAt(0) == '!' || message.charAt(0) == '/') {
 			PlayerCommands.handle(player, message);
 			return;
 		}