public double?GetOrderTotalPrice(List <Item> orderedItemList, int paymentMethodId, int deliveryTypeId)
{
double?totalPrice = 0;
foreach (var item in orderedItemList)
{
double?itemPrice = item.Quantity * item.Product.Price;
totalPrice += itemPrice;
}
;
totalPrice += _paymentMethodService.GetCost(paymentMethodId);
totalPrice += _deliveryTypeService.GetCost(deliveryTypeId);
return(totalPrice);
}