public IActionResult Post([FromBody] EventAlarmToSave eventAlarm)
        {
            string uid = _manager.GetUserId(User);

            _service.SaveEventAlarm(eventAlarm, uid);
            return(Ok(eventAlarm));
        }
        public void SaveEventAlarm(EventAlarmToSave eventAlarmToSave, string uid)
        {
            ApplicationUser owner         = _repo.Query <ApplicationUser>().Where(u => u.Id == uid).FirstOrDefault();
            CalendarEvent   calendarEvent = _repo.Query <CalendarEvent>().Where(c => c.Id == eventAlarmToSave.CalenderEventId).FirstOrDefault();
            DateTime        alarmDate     = DateTime.Now;

            // get the calender Event's time
            DateTime eventDateTime = calendarEvent.EventDateTime;
            // now we need to find out when the user wants the alarm set for ...
            int negOffsetTime = eventAlarmToSave.OffsetTime * -1;

            switch (eventAlarmToSave.OffsetPeriod)
            {
            case "minute":
                alarmDate = eventDateTime.AddMinutes(negOffsetTime);
                break;

            case "hour":
                alarmDate = eventDateTime.AddHours(negOffsetTime);
                break;

            case "day":
                alarmDate = eventDateTime.AddDays(negOffsetTime);
                break;

            case "week":
                alarmDate = eventDateTime.AddDays(negOffsetTime * 7);
                break;
            }
            // Convert to the eventAlarm model to save
            EventAlarm saveableAlarm = new EventAlarm
            {
                AlarmTime   = alarmDate,
                AlarmMethod = eventAlarmToSave.AlarmMethod
            };

            if (saveableAlarm.Id == 0)
            {
                saveableAlarm.isActive = true;
                _repo.Add(saveableAlarm);
            }
            else
            {
                _repo.Update(saveableAlarm);
            }
            saveableAlarm.Owner = owner;
            saveableAlarm.Event = calendarEvent;
            _repo.SaveChanges();
        }