private static double RefundTicket(Ticket selectedTicket, TicketRefundType refundType)
{
double sumOfPayments = TicketPayment.GetAll(selectedTicket.PrimaryKey)
.Sum(payment => payment.Amount);
// Don't refund money for items that were already returned
sumOfPayments = TicketItemReturn.GetAllForTicket(selectedTicket.PrimaryKey)
.Aggregate(sumOfPayments, (current, ticketItemReturn) => current - ticketItemReturn.Amount);
RegisterManager.ActiveRegisterDrawer.RemoveFromCurrentAmount(sumOfPayments);
TicketPayment.DeleteAll(selectedTicket.PrimaryKey);
TicketRefund.Add(selectedTicket.PrimaryKey, SessionManager.ActiveEmployee.Id,
RegisterManager.ActiveRegisterDrawer.Id, sumOfPayments, refundType);
return(sumOfPayments);
}
