public ActionResult Unlock(Guid userGuid, Guid doorGuid) { var isAccessEnabled = _userDoorRepository.IsAccessEnabled(userGuid, doorGuid); if (isAccessEnabled) { _doorUnlocker.Unlock(doorGuid); _eventTracker.DoorOpen(userGuid, doorGuid); return(new ActionResult { IsSuccess = true }); } _eventTracker.DoorAccessDenied(userGuid, doorGuid); return(new ActionResult { IsSuccess = false, Message = "Access to door denied" }); }