/**
  * Display a listing of notifications.
  *
  * @param int|null $lastNotificationId Last chat ID
  * @param int $size Response size
  * @return Response
  */
 public function getList($lastNotificationId = null, $size = 20)
 {
     $result = array();
     $size = (int) $size > 0 ? (int) $size : 20;
     $query = sprintf('select max(x.id) as "before" from (select id from notifications n where n.owner_id = %d order by n.timestamp desc offset %d) x;', Auth::user()->id, self::AMOUNT_LIMIT);
     if (($data = DB::select($query)) && !is_null($idBeforeRemove = $data[0]->before)) {
         Notification::whereRaw('owner_id = ? and id < ?', array(Auth::user()->id, $idBeforeRemove))->update(array('is_removed' => 1));
     }
     Notification::whereRaw('owner_id = ? and is_removed = 0 and timestamp > (CURRENT_TIMESTAMP - INTERVAL \'' . self::TIME_LIMIT . ' second\')' . (is_null($lastNotificationId) ? '' : ' and id < ' . (int) $lastNotificationId), array(Auth::user()->id))->orderBy('timestamp', 'desc')->orderBy('id', 'desc')->get()->take($size)->each(function ($notification) use(&$result) {
         $notificationUsers = NotificationUser::whereRaw('notification_id = ? and is_removed = 0', array($notification->id))->orderBy('timestamp', 'desc')->get();
         $usersCount = $notificationUsers->count();
         $type = $notification->object;
         $event = $notification->event;
         $data = array('id' => $notification->id, 'type' => $type, 'amount' => $usersCount, 'timestamp' => $notification->getTimeStamp());
         //						var_dump($type.' '.$event);
         $self = $this;
         if ($type == 'post') {
             $post = Post::find($notification->object_id);
             $data['post_id'] = $post->id;
             $data['post_title'] = $post->text;
             if ($event == 'commented') {
                 $notificationUsers->take(2)->each(function ($user) use(&$data, $self) {
                     $comment = Comment::find($user->subject_id);
                     if ($comment) {
                         $data['comments'][] = $self->collectionTransformer->transformComment($comment);
                     } else {
                         unset($data['id']);
                         unset($data['type']);
                         unset($data['amount']);
                         unset($data['timestamp']);
                         unset($data['post_id']);
                         unset($data['post_title']);
                     }
                 });
             } else {
                 if ($event == 'liked') {
                     $notificationUsers->take(2)->each(function ($user) use(&$data, $self) {
                         $user = User::withTrashed()->find($user->user_id);
                         $data['likes'][] = $self->collectionTransformer->transformUserToSmall($user);
                     });
                 } else {
                     unset($data['id']);
                     unset($data['type']);
                     unset($data['amount']);
                     unset($data['timestamp']);
                     unset($data['post_id']);
                     unset($data['post_title']);
                 }
             }
         } else {
             if ($type == 'comment') {
                 $comment = Comment::find($notification->object_id);
                 if ($comment) {
                     $post = Post::find($comment->post_id);
                     if ($post) {
                         $data['post_id'] = $post->id;
                         $data['post_title'] = $post->text;
                         $data['comment_id'] = $comment->id;
                     }
                     if ($event == 'liked') {
                         $notificationUsers->take(2)->each(function ($user) use(&$data, $self) {
                             $user = User::withTrashed()->find($user->user_id);
                             $data['likes'][] = $self->collectionTransformer->transformUserToSmall($user);
                         });
                     }
                 } else {
                     unset($data['id']);
                     unset($data['type']);
                     unset($data['amount']);
                     unset($data['timestamp']);
                     unset($data['post_id']);
                     unset($data['post_title']);
                 }
             } else {
                 unset($data['id']);
                 unset($data['type']);
                 unset($data['amount']);
                 unset($data['timestamp']);
                 unset($data['post_id']);
                 unset($data['post_title']);
             }
         }
         //						$filter = function ($data) {
         //							return array_filter($data) != [];
         //						};
         //                        $result['notifications'][] = array_filter($data, $filter);
         if (!empty($data)) {
             $result['notifications'][] = $data;
         }
     });
     if (is_null($lastNotificationId)) {
         foreach (Auth::user()->getTokens() as $token) {
             $state = new StateSender($token);
             $state->setAllPostsAsRead();
             $state->setAllCommentsAsRead();
             $state->send();
         }
     }
     return $this->respond($result);
 }