public override DiscountBase GetDiscountStrategy(Basket basket, DiscountBase parentDiscountStrategy = null)
{
DiscountBase bestStrategy = null;
double bestPrice = 0;
//Product Discount + MembershipDiscount
DiscountBase productDiscount = new ProductDiscount(true);
DiscountBase membershipAndProductDiscount = BasketDiscountOverMemberShipFactory.Instance.GetDiscountStrategy(basket, productDiscount);
bestStrategy = membershipAndProductDiscount;
bestPrice = membershipAndProductDiscount.GetDiscountedTotal(basket);
//Basket Discount + MembershipDiscount
DiscountBase basketDiscount = BasketDiscountOverTotalFactory.Instance.GetDiscountStrategy(basket, null);
DiscountBase memberShipAndBasketDiscount = BasketDiscountOverMemberShipFactory.Instance.GetDiscountStrategy(basket, basketDiscount);
(bestPrice, bestStrategy) = GetBetterStrategy(bestPrice, bestStrategy, basket, memberShipAndBasketDiscount);
//Product Discount + CategoryDiscount + MembershipDiscount
DiscountBase categoryAndProductDiscount = CategoryDiscountFactory.Instance.GetDiscountStrategy(basket, productDiscount);
DiscountBase membershipCategoryAndProdutDiscount = BasketDiscountOverMemberShipFactory.Instance.GetDiscountStrategy(basket, categoryAndProductDiscount);
(bestPrice, bestStrategy) = GetBetterStrategy(bestPrice, bestStrategy, basket, membershipCategoryAndProdutDiscount);
//Special Offer Basket Discount (like BlackFriday)
DiscountBase blackFridayDiscountStrategy = BlackFridayDiscountFactory.Instance.GetDiscountStrategy(basket, null);
(bestPrice, bestStrategy) = GetBetterStrategy(bestPrice, bestStrategy, basket, blackFridayDiscountStrategy);
return(bestStrategy);
}
protected virtual (double price, DiscountBase) GetBetterStrategy(double discountedPrice, DiscountBase currentStragey, Basket basket, DiscountBase nextDiscountStrategy)
{
if (nextDiscountStrategy != null)
{
double nextPrice = nextDiscountStrategy.GetDiscountedTotal(basket);
if (currentStragey == null || nextPrice < discountedPrice)
{
return(nextPrice, nextDiscountStrategy);
}
}
return(discountedPrice, currentStragey);
}
public override DiscountBase GetDiscountStrategy(Basket basket, DiscountBase parentDiscountStrategy)
{
DiscountBase bestStrategy = null;
double bestPrice = 0;
foreach (KeyValuePair <DiscountTypesEnum, Func <DiscountBase, DiscountBase> > discountStrategy in BasketDiscountOverMemberShipFactory.Creators)
{
DiscountBase currentStrategy = discountStrategy.Value(parentDiscountStrategy);
if (currentStrategy.IsEnabled(basket) &&
(bestStrategy == null || bestStrategy.GetDiscountedTotal(basket) > currentStrategy.GetDiscountedTotal(basket)))
{
(bestPrice, bestStrategy) = this.GetBetterStrategy(bestPrice, bestStrategy, basket, currentStrategy);
}
}
return(bestStrategy);
}
public double calcDiscountedTotal(DiscountBase discountStrategy)
{
DiscountedTotal = discountStrategy.GetDiscountedTotal(this);
return(DiscountedTotal);
}