Automatic BauServer stop after 60s running without player

BauSystem_Main/src/de/steamwar/bausystem/BauSystem.java

@@ -18,6 +18,7 @@ import org.bukkit.event.player.PlayerLoginEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.permissions.PermissionAttachment;
 import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.scheduler.BukkitTask;
 
 import java.io.File;
 import java.io.IOException;
@@ -32,6 +33,8 @@ public class BauSystem extends JavaPlugin implements Listener {
     public static final String PREFIX = "§eBauSystem§8» §7";
     public static final String SECTION_PATH = "/home/minecraft/backbone/server/UserBau/";
 
+    private BukkitTask autoShutdown;
+
     @Override
     public void onEnable() {
         plugin = this;
@@ -87,6 +90,8 @@ public class BauSystem extends JavaPlugin implements Listener {
         Bukkit.getPluginManager().registerEvents(new RegionListener(), this);
         Bukkit.getPluginManager().registerEvents(new TNTListener(), this);
         Bukkit.getPluginManager().registerEvents(new BauScoreboard(), this);
+
+        autoShutdown = Bukkit.getScheduler().runTaskLater(this, Bukkit::shutdown, 1200);
     }
 
     public static BauSystem getPlugin(){
@@ -109,6 +114,11 @@ public class BauSystem extends JavaPlugin implements Listener {
 
     @EventHandler
     public void onJoin(PlayerLoginEvent e) {
+        if(autoShutdown != null){
+            autoShutdown.cancel();
+            autoShutdown = null;
+        }
+
         Player p = e.getPlayer();
         PermissionAttachment attachment = p.addAttachment(this);
         attachment.setPermission("F3NPerm.use", true);