Merge pull request #381 from Coooookies/development

Show the player's UID with the `/list` command

src/main/java/emu/grasscutter/command/commands/ListCommand.java

@@ -8,19 +8,42 @@ import emu.grasscutter.game.player.Player;
 import java.util.List;
 import java.util.Map;
 
-@Command(label = "list", description = "List online players")
+@Command(label = "list", usage = "list [uid]",
+        description = "List online players", aliases = {"players"})
 public final class ListCommand implements CommandHandler {
 
     @Override
     public void execute(Player sender, List<String> args) {
         Map<Integer, Player> playersMap = Grasscutter.getGameServer().getPlayers();
+        boolean needUID = false;
+
+        if (args.size() > 0) {
+            needUID = args.get(0).equals("uid");
+        }
 
         CommandHandler.sendMessage(sender, String.format("There are %s player(s) online:", playersMap.size()));
 
         if (playersMap.size() != 0) {
             StringBuilder playerSet = new StringBuilder();
-            playersMap.values().forEach(player -> 
-                    playerSet.append(player.getNickname()).append(", "));
+            boolean finalNeedUID = needUID;
+
+            playersMap.values().forEach(player -> {
+                playerSet.append(player.getNickname());
+
+                if (finalNeedUID) {
+                    if (sender != null) {
+                        playerSet.append(" <color=green>(")
+                                .append(player.getUid())
+                                .append(")</color>");
+                    } else {
+                        playerSet.append(" (")
+                                .append(player.getUid())
+                                .append(")");
+                    }
+                }
+
+                playerSet.append(", ");
+            });
 
             String players = playerSet.toString();
             CommandHandler.sendMessage(sender, players.substring(0, players.length() - 2));