public async Task <IActionResult> GetReservations()
{
var user = await userManager.GetUserAsync(User);
var reservations = context.Reservations
.Where(r => r.UserId == user.Id)
.Include(r => r.Screening)
.ThenInclude(sc => sc.Movie)
.Include(r => r.Screening)
.ThenInclude(sc => sc.ScreeningRoom)
.ToArray();
var badReservations = reservations.Where(r => r.Expiration.HasValue || !r.IsConfirmed);
context.RemoveRange(badReservations);
await context.SaveChangesAsync();
return(new OkObjectResult(reservations.Where(r => !r.Expiration.HasValue && r.IsConfirmed)));
}
public async Task <IActionResult> CheckReservation([FromBody] int reservationId)
{
var myReservation = context.Reservations.FirstOrDefault(r => r.ReservationId == reservationId);
if (myReservation == null)
{
return(new OkObjectResult("RESERVATION_BOOKED"));
}
if (myReservation.Expiration.HasValue)
{
return(BadRequest()); // nie warto sprawdzać potwierdzonej rezerwacji
}
var otherReservations = context.Reservations
.Where(r => r.ScreeningId == myReservation.ScreeningId && r.SeatX == myReservation.SeatX && r.SeatY == myReservation.SeatY);
var confirmed = await otherReservations.Where(r => r.IsConfirmed).FirstOrDefaultAsync(); // no niestety
if (confirmed != null)
{
return(new OkObjectResult("RESERVATION_BOOKED"));
}
var leader = await otherReservations.Where(r => r.Expiration.HasValue).FirstOrDefaultAsync();
if (leader == null) // leader sobie poszedł
{
var min = otherReservations.Select(r => r.Priority).Min(); // wybieramy z najniższą wartością
if (myReservation.Priority == min) // to my!
{
myReservation.Expiration = DateTime.Now.AddMinutes(1);
context.Update(myReservation);
await context.SaveChangesAsync();
return(new OkObjectResult(myReservation));
}
else
{
return(new OkObjectResult("KEEP_WAITING")); // nie my, ale warto dalej próbować
}
}
else // leader istnieje
{
if (leader.Expiration.Value > DateTime.Now) // i dalej ma prawo wyboru
{
return(new OkObjectResult("KEEP_WAITING"));
}
else
{
context.Remove(leader); // leader is dead!
await context.SaveChangesAsync();
var min = otherReservations.Select(r => r.Priority).Min(); // wybieramy z najniższ wartości
if (myReservation.Priority == min)
{
myReservation.Expiration = DateTime.Now.AddMinutes(1);
context.Update(myReservation);
await context.SaveChangesAsync();
return(new OkObjectResult(myReservation));
}
else
{
if (leader.IsConfirmed)// jest rezerwacja zaklepana
{
var res = otherReservations.Where(r => !r.IsConfirmed);
context.RemoveRange(res);
await context.SaveChangesAsync();
return(new OkObjectResult("RESERVATION_BOOKED"));
}
else
{
return(new OkObjectResult("KEEP_WAITING")); // nie my, ale warto dalej próbować
}
}
}
}
}