public ProductPrice Apply(ProductPrice productPrice, int productCount)
{
var specialOffersCount = productCount / Amount;
var priceWithoutDiscount = productCount * productPrice;
var perOfferDiscount = Amount * productPrice - TotalPrice;
return(priceWithoutDiscount - (specialOffersCount > 0 ? specialOffersCount * perOfferDiscount : 0));
}
public VolumedSpecialOffer(int amount, ProductPrice totalPrice)
{
Amount = amount;
TotalPrice = totalPrice;
}
public Product(ProductCode code, ProductPrice price, ISpecialOffer specialOffer)
{
Code = code;
Price = price;
SpecialOffer = specialOffer;
}
public void ChangePrice(ProductPrice price)
{
Price = price;
}
public Product(ProductCode code, ProductPrice price) : this(code, price, new EmptySpecialOffer())
{
}