Add option to delay queue-servers by up to 3 seconds

api/src/main/java/us/ajg0702/queue/api/ServerTimeManager.java

@@ -6,7 +6,7 @@ public interface ServerTimeManager {
     /**
      * Gets the time that the player specified was last seen switching servers
      * @param player The player to check
-     * @return The time that they last switched servers, in miliseconds since midnight, January 1, 1970, UTC
+     * @return The time that they last switched servers, in milliseconds since midnight, January 1, 1970, UTC
      */
     long getLastServerChange(AdaptedPlayer player);
 }

common/src/main/java/us/ajg0702/queue/common/EventHandlerImpl.java

@@ -118,7 +118,19 @@ public class EventHandlerImpl implements EventHandler {
                                             player.hasPermission("ajqueue.queueserver." + to.getName())
                             )
                 ) {
-                    main.getQueueManager().addToQueue(player, to);
+                    int delay = Math.min(main.getConfig().getInt("queue-server-delay"), 3000);
+                    Runnable task = () -> {
+                        if(to.getServers().contains(player.getCurrentServer())) return;
+                        main.getQueueManager().addToQueue(player, to);
+                    };
+
+                    Debug.info("Delaying queue-server by " + delay);
+
+                    if(delay > 0) {
+                        main.getTaskManager().executor.schedule(task, delay, TimeUnit.MILLISECONDS);
+                    } else {
+                        task.run();
+                    }
                 }
             }
         }

common/src/main/java/us/ajg0702/queue/common/QueueManagerImpl.java

@@ -470,6 +470,11 @@ public class QueueManagerImpl implements QueueManager {
                         }
                         return;
                     }
+                    long lastSwitch = main.getServerTimeManager().getLastServerChange(player);
+                    int delay = Math.min(Math.max(main.getConfig().getInt("queue-server-delay"), 0), 3000);
+                    if(System.currentTimeMillis() - lastSwitch > delay + 1000 || !player.getCurrentServer().equals(from)) {
+                        return;
+                    }
                     if(
                             !getPlayerQueues(player).contains(to) &&
                                     (

common/src/main/resources/config.yml

@@ -84,6 +84,13 @@ auto-add-kick-reasons:
 queue-servers:
   - 'limbo:lobbys'
 
+# How much should we delay queueing players in queue servers?
+# You should only use this if you have issues with the instant sending.
+# Set to 0 or any negative number to disable
+# In milliseconds. Maximum value is 3000 (3 seconds)
+#  Default: 0
+queue-server-delay: 0
+
 # Should we completely kick the user from the server if they are in a queue-server
 #  and are kicked from the server with one of the above reasons?
 # Note this will do nothing on servers that aren't queue-servers
@@ -382,7 +389,7 @@ debug: false
 
 
 # Don't touch this number please
-config-version: 43
+config-version: 44
 
 
 # This is ONLY here so that they can be moved to messages.yml. Please edit these in messages.yml!