private decimal ApplyCoupon(Coupon applicableCoupon, decimal total)
{
applicableCoupon.HasBeenApplied = true;
string adjustmentItem = string.Format(
"Coupon ${0} off when the bill total (${1}) exceeds ${2}",
applicableCoupon.AmountOff, total, applicableCoupon.Threshold);
this.AddItem(adjustmentItem).Quantity(1)
.PricePerUnit(-applicableCoupon.AmountOff);
return total - applicableCoupon.AmountOff;
}
public void AddCoupon(Coupon coupon)
{
_coupons.Add(coupon);
}
public void AddCoupon(Coupon coupon)
{
_coupons.Add(coupon);
}