public Tuple <ShopProduct, int> ApplyPolicy(ShoppingCart cart, Guid productGuid, int quantity, BaseUser user, IUnitOfWork unitOfWork)
{
if (CheckPolicy(cart, productGuid, quantity, user, unitOfWork))
{
int prevDiscountPercentage = DiscountPolicy2.DiscountPercentage;
DiscountPolicy2.DiscountPercentage = DiscountPercentage;
var discountProductAndQuantity = DiscountPolicy2.ApplyPolicy(cart, productGuid, quantity, user, unitOfWork);
DiscountPolicy2.DiscountPercentage = prevDiscountPercentage;
return(discountProductAndQuantity);
}
return(null);
}
public bool CheckPolicy(ShoppingCart cart, Guid productGuid, int quantity, BaseUser user, IUnitOfWork unitOfWork)
{
return(Operator.Operate(DiscountPolicy1.CheckPolicy(cart, productGuid, quantity, user, unitOfWork), DiscountPolicy2.CheckPolicy(cart, productGuid, quantity, user, unitOfWork)));
}