public void ApplyOfferVoucher(OfferVoucher offerVoucher)
{
if (_offerVouchers.Any(x => x.Code == offerVoucher.Code))
{
throw new Exception($"Basket already has Offer Voucher with code '{offerVoucher.Code}' applied");
}
_offerVouchers.Add(offerVoucher);
IsDirty = true;
}
private decimal GetVoucherOfferDiscount(OfferVoucher voucher)
{
var discount = voucher.Amount;
if (voucher.Category != null)
{
// This is a voucher for a specific product category. So get those products
var categoryProducts = _products.Where(x => x.Product.Category == voucher.Category).ToList();
if (categoryProducts.Count == 0)
{
_messages.Add($"There are no products in your basket applicable to voucher Voucher {voucher.Code}");
return(0.00m);
}
// See what the total of the qualifying category vouchers is
var categoryProductsTotal = categoryProducts.Sum(x => x.Total);
// if the qualifying total is less than the voucher then use the qualifying total
discount = voucher.Amount >= categoryProductsTotal ? categoryProductsTotal : voucher.Amount;
}
return(discount);
}