public function exec()
 {
     $viewData = new \stdClass();
     $request = $this->getRequest();
     $model = new FourdigitsModel($request->phone);
     $game = $model->findGame();
     if ($game === false) {
         $game = $model->newGame();
     }
     $viewData->win = $game->play($request->message);
     $viewData->history = $game->getHistory();
     $viewData->phone = $request->phone;
     ViewFactory::factory('Fourdigits', Application::isCli() ? 'cli' : 'html')->setData($viewData)->show();
 }