Added events to GroupManager

src/Group/GroupManager.php

@@ -2,12 +2,19 @@
 
 namespace NoccyLabs\React\WebSocket\Group;
 
+use Evenement\EventEmitterInterface;
+use Evenement\EventEmitterTrait;
 use NoccyLabs\React\WebSocket\WebSocketInterface;
 use React\EventLoop\Loop;
 use WeakReference;
 
-class GroupManager
+class GroupManager implements EventEmitterInterface
 {
+    use EventEmitterTrait;
+
+    const EVENT_CREATED = 'created';
+    const EVENT_DESTROYED = 'destroyed';
+
     /** @var array<string,ConnectionGroup> */
     private array $groups = [];
 
@@ -20,11 +27,13 @@ class GroupManager
             $group->on(ConnectionGroup::EVENT_LEAVE, function () use ($group) {
                 Loop::futureTick(function () use ($group) {
                     if (count($group) === 0) {
+                        $this->emit(self::EVENT_DESTROYED, [ $group ]);
                         $group->removeAllListeners();
                         unset($this->groups[$group->getName()]);
                     }
                 });
             });
+            $this->emit(self::EVENT_CREATED, [ $group ]);
         } else {
             $group = $this->groups[$name];
         }