Implemented subscription logic

src/Broker/Topic.php

@@ -10,17 +10,19 @@ class Topic
 
     /** @var string Topic name */
     private string $topic;
+
     /** @var array<string,Message> */
     private array $messages = [];
+    
     /** @var int Creation unixtime */
     private int $created;
 
-    private SubscriptionList $subscribers;
+    private SplObjectStorage $subscribers;
 
     public function __construct(string $topic)
     {
         $this->topic = $topic;
-        $this->subscribers = new SubscriptionList();
+        $this->subscribers = new SplObjectStorage();
         $this->created = time();
     }
 
@@ -31,8 +33,10 @@ class Topic
         foreach ($this->subscribers as $subscriber) {
             if ($message->private === true) {
                 // TODO check subscriber access
+                $subscriber->deliver($message);
             } else {
                 // TODO deliver to subscriber
+                $subscriber->deliver($message);
             }
         }
     }
@@ -52,6 +56,16 @@ class Topic
         return count($this->subscribers);
     }
 
+    public function addSubscriber(SubscriberInterface $subscriber)
+    {
+        $this->subscribers->attach($subscriber);
+    }
+
+    public function removeSubscriber(SubscriberInterface $subscriber)
+    {
+        $this->subscribers->detach($subscriber);
+    }
+
     /**
      * Garbage collect histry
      *