/**
  * @param Session $session
  * @return \Illuminate\Http\JsonResponse
  */
 public function ajax(Session $session)
 {
     $alerts = $this->alert->takeForUser(auth()->user()->id);
     $unread = auth()->user()->alerts_unread - $this->mark($alerts);
     $view = view('user.alerts.ajax', ['alerts' => $alerts, 'session' => $session->findBy('user_id', auth()->user()->id, ['created_at'])])->render();
     return response()->json(['html' => $view, 'unread' => $unread]);
 }