//This method creates a new TicketReservation and adds it to the Events collection
public TicketReservationModel ReserveTicket(int tktQty)
{
if (!CanReserveTicket(tktQty))
{
ThrowExceptionWithDetailsOnWhyTicketsCannotBeReserved();
}
TicketReservationModel reservation = TicketReservationFactory.CreateReservation(this, tktQty);
ReservedTickets.Add(reservation);
return(reservation);
}
//This method creates a TicketPurchase that matches the reserved ticket.
public TicketPurchaseModel PurchaseTicketWith(Guid reservationId)
{
//check if ticket purchase is possible with a certain reservation Id
if (!CanPurchaseTicketWith(reservationId))
{
throw new ApplicationException(
DetermineWhyTicketCannotbePurchasedWith(reservationId));
}
//get the reservation assigned to the reservation Id
TicketReservationModel reservation = GetReservationWith(reservationId);
//Create a new ticket
TicketPurchaseModel ticket = TicketPurchaseFactory.CreateTicket(this, reservation.TicketQuantity);
reservation.HasBeenRedeemed = true;
PurchasedTickets.Add(ticket);
return(ticket);
}
//This method returns a string detailing why a ticket cannot be purchased based on a reservation ID.
public string DetermineWhyTicketCannotbePurchasedWith(Guid reservationId)
{
string reservationIssue = "";
if (HasReservationWith(reservationId))
{
TicketReservationModel reservation = GetReservationWith(reservationId);
if (reservation.HasExpired())
{
reservationIssue = String.Format("Ticket reservation '{0}' has expired", reservationId.ToString());
}
else if (reservation.HasBeenRedeemed)
{
reservationIssue = String.Format("Ticket reservation '{0}' has expired", reservationId.ToString());
}
}
else
{
reservationIssue = String.Format("There is no ticket reservation with the Id '{0}'", reservationId.ToString());
}
return(reservationIssue);
}
