public async Task <IActionResult> Create(Guid id, [Bind("Venue,StartTime")] CreateShowViewModel viewModel)
        {
            if (ModelState.IsValid)
            {
                var venue = await venueQueries.GetVenue(viewModel.Venue);

                if (venue == null)
                {
                    TempData["CustomError"] = "Venue not found";
                    return(RedirectToAction(nameof(Create), new { id }));
                }

                if (venue.TimeZone == null)
                {
                    TempData["CustomError"] = "The selected venue does not have a time zone";
                    return(RedirectToAction(nameof(Create), new { id }));
                }

                var timeZone = TimeZoneInfo.FindSystemTimeZoneById(venue.TimeZone);
                if (timeZone == null)
                {
                    TempData["CustomError"] = $"The selected venue has an invalid time zone: {venue.TimeZone}";
                    return(RedirectToAction(nameof(Create), new { id }));
                }

                var offset = timeZone.GetUtcOffset(viewModel.StartTime);
                await showCommands.ScheduleShow(id, viewModel.Venue, new DateTimeOffset(viewModel.StartTime, offset));

                return(RedirectToAction("Details", "Acts", new { id }));
            }
            else
            {
                return(View(viewModel));
            }
        }
        public async Task <IActionResult> Create(Guid id)
        {
            var act = await actQueries.GetAct(id);

            if (act == null)
            {
                return(NotFound());
            }

            var venues = await venueQueries.ListVenues();

            var nextWeek  = DateTime.Now.Date.AddDays(7).AddHours(19);
            var viewModel = new CreateShowViewModel
            {
                Act    = act,
                Venues = venues.Select(venue => new SelectListItem
                {
                    Value = venue.VenueGuid.ToString(),
                    Text  = $"{venue.Name}, {venue.City}"
                }).ToList(),
                StartTime = nextWeek
            };

            if (TempData["CustomError"] != null)
            {
                ModelState.AddModelError(String.Empty, TempData["CustomError"].ToString());
            }
            return(View(viewModel));
        }