public decimal CalculateDiscount(string code, Order order)
{
if (code == null)
{
throw new ArgumentNullException(nameof(code));
}
if (order == null)
{
throw new ArgumentNullException(nameof(order));
}
var coupon = _discountCouponRepositoryQuery.GetByCode(code);
return(order.Total - (order.Total * coupon.Discount));
}
public void ProcessOrder(string email, PaymentMethod paymentMethod, Payment payment,
Address address, string code)
{
var shoppingCart = _shoppingCartService.GetByCustomer(email);
var order = OrderFactory.CreateOrder(shoppingCart);
var shipping = Shipping.Create(address);
var coupon = _discountCouponRepositoryQuery.GetByCode(code);
order.ChangePayment(payment);
order.ChangePaymentMethod(paymentMethod);
order.ChangeShipping(shipping);
order.ApplyDiscountCoupon(coupon);
_orderRepository.Add(order);
}