Add ListCommand for user

src/de/steamwar/bungeecore/BungeeCore.java

@@ -121,6 +121,7 @@ public class BungeeCore extends Plugin {
         new UnIgnoreCommand();
         new PollresultCommand();
         new ResourcereloadCommand();
+        new ListCommand();
 
         if(!EVENT_MODE){
             new WebregisterCommand();

src/de/steamwar/bungeecore/commands/ListCommand.java

@@ -0,0 +1,71 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2020  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bungeecore.commands;
+
+import de.steamwar.bungeecore.Servertype;
+import de.steamwar.bungeecore.Subserver;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.config.ServerInfo;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.connection.Server;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.TreeMap;
+import java.util.stream.Collectors;
+
+public class ListCommand extends BasicCommand {
+
+    public ListCommand() {
+        super("list", "");
+    }
+
+    private final TreeMap<String, List<ProxiedPlayer>> playerMap = new TreeMap<>();
+
+    private synchronized void updateCustomTablist(){
+        //Calculate server-player-map
+        playerMap.clear();
+        for (ProxiedPlayer player : ProxyServer.getInstance().getPlayers()) {
+            Server pserver = player.getServer();
+            if (pserver == null) //Happens temporarily
+                continue;
+
+            ServerInfo server = pserver.getInfo();
+            String serverName = server.getName();
+
+            Subserver subserver = Subserver.getSubserver(server);
+            if (subserver != null && subserver.getType() == Servertype.BAUSERVER) {
+                playerMap.computeIfAbsent("Bau", s -> new ArrayList<>()).add(player);
+            } else {
+                playerMap.computeIfAbsent(serverName, s -> new ArrayList<>()).add(player);
+            }
+        }
+        playerMap.forEach((server, players) -> players.sort((proxiedPlayer, t1) -> proxiedPlayer.getName().compareToIgnoreCase(t1.getName())));
+    }
+
+    @Override
+    public void execute(CommandSender commandSender, String[] strings) {
+        updateCustomTablist();
+        for (String server : playerMap.navigableKeySet()) {
+            commandSender.sendMessage("§e" + server + "§8: §7" + playerMap.get(server).stream().map(CommandSender::getName).collect(Collectors.joining(", ")));
+        }
+    }
+}