public async Task <JsonResult> CheckIsAccessible()
 {
     try {
         //this checks if timerApp is accessible or not
         var taid    = Guid.Parse(Request.Form["id"]);
         var api     = Guid.Parse(Request.Form["api"]);
         var tz      = Guid.Parse(Request.Form["tz"]);
         var timeNow = DateTime.Now;
         if (TimerAppService.IsAccessible(taid, api, timeNow))
         {
             return(Success(true));
         }
         return(Failed(MessageUtility.Unaccessible()));
     } catch { return(Failed(MessageUtility.ServerError())); }
 }