private string ValidateAvailableSeats(PurchaseTicketViewModel ticket, AvailableTrainViewModel train)
{
if ("business".Equals(ticket.TravellerClass))
{
int difference = (train.BusinessClassPassengersCount + ticket.PassengersCount)
- AppConstants.TRAIN_CAPACITY_BUSINESS;
if (difference > 0)
{
int availableSeats = AppConstants.TRAIN_CAPACITY_BUSINESS - train.BusinessClassPassengersCount;
return availableSeats > 0 ? $"There are only { availableSeats } seats available." : "There are no seats available";
}
}
if ("economic".Equals(ticket.TravellerClass))
{
int difference = (train.EconomicClassPassengersCount + ticket.PassengersCount)
- AppConstants.TRAIN_CAPACITY_ECONOMIC;
if (difference > 0)
{
int availableSeats = AppConstants.TRAIN_CAPACITY_ECONOMIC - train.EconomicClassPassengersCount;
return availableSeats > 0 ? $"There are only { availableSeats } seats available." : "There are no seats available";
}
}
return string.Empty;
}
public ActionResult Purchase(PurchaseTicketViewModel ticket)
{
var currentUserId = User.Identity.GetUserId();
var train = db.Trains.Find(ticket.Id);
if (train == null)
{
return new HttpStatusCodeResult(404);
}
var viewModel = new AvailableTrainViewModel()
{
Id = train.Id,
Route = train.Route,
BusinessClassPassengersCount = (db.TrainTickets
.Where(t => t.TrainId == train.Id)
.Where(t => t.IsConfirmed)
.Where(t => t.IsBusinessClass)
.Select(t => t.PassengersCount)
.DefaultIfEmpty()
.Sum()),
EconomicClassPassengersCount = (db.TrainTickets
.Where(t => t.TrainId == train.Id)
.Where(t => t.IsConfirmed)
.Where(t => !t.IsBusinessClass)
.Select(t => t.PassengersCount)
.DefaultIfEmpty()
.Sum()),
DepartureTime = train.DepartureTime
};
if (train.DepartureTime < DateTime.Now)
{
ViewBag.Error = "This train has already departed.";
return View(viewModel);
}
else if (train.DepartureTime > DateTime.Now.AddDays(AppConstants.MAX_DAYS_BEFORE_RESERVATION))
{
ViewBag.Error = "You can only purchase tickets as late as two weeks before departure.";
return View(viewModel);
}
string errorMessage = ValidateAvailableSeats(ticket, viewModel);
if (!string.IsNullOrEmpty(errorMessage))
{
ViewBag.Error = errorMessage;
return View(viewModel);
}
var generatedTicket = new TrainTicket()
{
UserId = new Guid(currentUserId),
TrainId = train.Id,
Departure = train.Route.Departure,
Arrival = train.Route.Arrival,
DepartureTime = train.DepartureTime,
PurchasedOn = DateTime.Now,
IsBusinessClass = ticket.TravellerClass == "business" ? true : false,
PassengersCount = ticket.PassengersCount,
Price = train.Route.Price * ticket.PassengersCount,
IsConfirmed = false
};
generatedTicket.Price *= generatedTicket.IsBusinessClass
? AppConstants.BUSINESS_CLASS_MULTIPLIER : 1.0m;
db.TrainTickets.Add(generatedTicket);
db.SaveChanges();
return SendPurchaseConfirmationEmail(generatedTicket.Id);
}
