public double CalculateDiscount()
{
double discount = 0;
foreach (var Discount in myShoppingCart.Discounts)
{
if (Discount.Type == DiscountType.noDiscount)
{
discount += 0.0;
}
if (Discount.Type == DiscountType.perCart)
{
discount += calTotal.CalculateTotal() * Discount.Percentage;
}
foreach (var item in myShoppingCart.Items)
{
if (Discount.Type == DiscountType.perItem && item.HasDiscount)
{
discount += item.Item.Price * item.Discount * item.Quantity;
}
else if (Discount.Type == DiscountType.perType && item.HasDiscount)
{
discount += item.Item.Price * item.Discount;
}
}
}
return(discount);
}
public double payment()
{
double bills = calTotal.CalculateTotal() + calTaxes.CalculateTaxes() - calDiscount.CalculateDiscount();
return(bills * exRate.ExchangeCurrency(myShoppingCart.Currency));
}