// Implementation of collect data method. Executes after plug-in payment item is added to the order on payment page or on preliminary payments page.
// To do operations with order that is currently edited by operator, we need special operationService. Do NOT use it after method returns.
public void OnPaymentAdded(IOrder order, IPaymentItem paymentItem, [NotNull] IUser cashier, [NotNull] IOperationService operations, IReceiptPrinter printer, IViewManager viewManager,
IPaymentDataContext context)
{
switch (order.Status)
{
case OrderStatus.New:
// let's add a gift product to the first guest
var credentials = operations.GetCredentials();
var guest = order.Guests.First(); // lucky guest
var product = operations.GetActiveProducts().Last(); // gift product
operations.AddOrderProductItem(3m, product, order, guest, null, credentials);
var orderWithGift = operations.GetOrderById(order.Id);
//we assume our gift product is payed by our payment, so automatically add its price to payment sum.
var giftSum = orderWithGift.ResultSum - order.ResultSum;
paymentItem = orderWithGift.Payments.Single(p => p.Id == paymentItem.Id);
operations.ChangePaymentItemSum(paymentItem.Sum + giftSum, giftSum, null, paymentItem, orderWithGift, credentials);
return;
case OrderStatus.Bill:
// we cannot edit order widely after bill, but at least we can set possible sum range and provide initial sum value
operations.ChangePaymentItemSum(42m, 0m, 100500m, paymentItem, order, operations.GetCredentials());
return;
default:
// we don't expect payment item to be added in statuses other than new and bill
throw new ArgumentOutOfRangeException();
}
}
