Sequencing.WeatherApp.Controllers.ExternalSettingsController.SubscribePushNotification C# (CSharp) Method

        public JsonResult SubscribePushNotification(PushSubscribeDTO pushDTO)
        {
            GenericResponse responseObj = null;
            int timeStart = DateTime.Now.TimeOfDay.Seconds;

            try
            {
                if (pushDTO.pushCheck)
                    pushService.Subscribe(pushDTO.deviceToken, pushDTO.deviceType, pushDTO.accessToken, pushDTO.appType);
                else
                {
                    string userName = new AuthWorker(Options.OAuthUrl, Options.OAuthRedirectUrl, Options.OAuthSecret,
                        Options.OAuthAppId).GetUserInfo(pushDTO.accessToken).username;
                    if (userName != null)
                    {
                        var userId = factory.GetDeviceTokenDao().GetUserIdByName(userName);
                        pushService.Unsubscribe(pushDTO.deviceToken, userId);
                    }
                    else
                        throw new Sequencing.WeatherApp.Controllers.DaoLayer.ApplicationException(string.Format("Invalid access token {0}", pushDTO.accessToken));
                }

                responseObj = new GenericResponse()
                {
                    Status = 0,
                    ResponseTime = DateTime.Now.TimeOfDay.Seconds - timeStart,
                    Message = "Push notification successfully " + (pushDTO.pushCheck ? "subscribed" : "unsubscribed"),
                    Data = null,
                };

                return Json(responseObj, JsonRequestBehavior.AllowGet);
            }
            catch (Exception e)
            {
                responseObj = new GenericResponse()
                {
                    Status = 1,
                    ResponseTime = DateTime.Now.TimeOfDay.Seconds - timeStart,
                    Message = e.Message,
                    Data = null,
                };

                ResponseLogging(responseObj);
                return Json(responseObj, JsonRequestBehavior.AllowGet);
            }
        }