public override void CalculatePrice()
{
Item milkItem = Items.FirstOrDefault(x => x.Product.Code == "Milk");
if (milkItem?.Quantity > 3)
{
int discountQoef = milkItem.Quantity / 4;
double discount = discountQoef * milkItem.Product.Price;
milkItem.ProductTotal = Math.Round(milkItem.ProductTotal - discount, 2);
AppliedDiscounts.Add(Discounts.MilkDiscount);
}
}
public override void CalculatePrice()
{
Item butterItem = Items.FirstOrDefault(x => x.Product.Code == "Butter");
Item breadItem = Items.FirstOrDefault(x => x.Product.Code == "Bread");
if (butterItem?.Quantity >= 2 && breadItem != null)
{
int discountQoef = butterItem.Quantity / 2 > breadItem.Quantity ? breadItem.Quantity : butterItem.Quantity / 2;
breadItem.ProductTotal = Math.Round(breadItem.ProductTotal - (discountQoef * breadItem.Product.Price * 0.5), 2);
AppliedDiscounts.Add(Discounts.ButterDiscount);
}
}