public async Task <IActionResult> UnSubscribe(int eventId) { Event @event = await EventServices.GetEventByIdAsync(eventId); Booking booking = await BookingServices.GetByIdsAsync(CurrentUser.Id, eventId); if (@event == null || booking == null || [email protected]() || [email protected]()) { return(BadRequest("Can't unsubscribe to the event")); } @event.SubscribedNumber--; if (@event.ValidationRequired && (bool)booking.Validated) { @event.ValidatedNumber--; } try { Context.Update(@event); Context.Remove(booking); await Context.SaveChangesAsync(); } catch (DbUpdateException e) { return(BadRequest(e.InnerException.Message)); } return(NoContent()); }