private double GetDiscount(Coupon coupon, double totalOriginal)
{
if (coupon.MinimumAmount > totalOriginal)
{
return(totalOriginal);
}
return(Convert.ToInt32(coupon.CouponType) switch {
(int)Coupon.ECouponType.Dollar => Math.Round(totalOriginal - coupon.Discount, 2),
(int)Coupon.ECouponType.Percent =>
Math.Round(totalOriginal - (totalOriginal * coupon.Discount / 100), 2),
_ => totalOriginal
});
private double DiscountedPrice(Coupon coupon, double originalOrderTotal)
{
if (coupon == null || coupon.MinimumAmount > originalOrderTotal)
{
return(originalOrderTotal);
}
if (coupon.CouponType == ECouponType.Dollar)
{
return(originalOrderTotal - coupon.Discount);
}
return(originalOrderTotal - ((originalOrderTotal * coupon.Discount) / 100));
}