public async Task ApplyVoucherAsync(string voucherCode)
{
var basket = GetCurrentBasket();
if (basket.VoucherApplied == true)
{
return;
}
var voucher = await _voucherService.GetAsync(voucherCode);
if (voucher != null &&
voucher.ExpiryDate >= DateTime.UtcNow.Date)
{
var discountToBeApplied = voucher.Discount;
if (basket.NumberOfItems > 0)
{
var hasNonGiftItems = basket.LineItems.Any(li => li.IsGiftVoucherItem == false);
if (hasNonGiftItems)
{
var giftItemsTotal = basket.LineItems.Where(li => li.IsGiftVoucherItem).Sum(li => li.LineItemPrice);
var giftItemDiscount = basket.LineItems.Where(li => li.IsGiftVoucherItem).Sum(li => li.LineItemDiscount);
var nonGiftItemsTotal = basket.LineItems.Where(li => li.IsGiftVoucherItem == false).Sum(li => li.LineItemPrice);
var nonGiftItemDiscount = basket.LineItems.Where(li => li.IsGiftVoucherItem == false).Sum(li => li.LineItemDiscount);
var discountAfterApplyingVoucher = nonGiftItemDiscount + voucher.Discount;
var priceAfterApplyinVoucher = nonGiftItemsTotal - voucher.Discount;
if (priceAfterApplyinVoucher < 0)
{
priceAfterApplyinVoucher = 0;
}
basket.TotalDiscount = giftItemDiscount + discountAfterApplyingVoucher;
basket.TotalPrice = giftItemsTotal + priceAfterApplyinVoucher - giftItemDiscount - nonGiftItemDiscount;
if (basket.TotalPrice < 0)
{
basket.TotalPrice = 0;
}
basket.VoucherApplied = true;
basket.VoucherDiscount = voucher.Discount;
}
//var notGiftedLineItemsPrice = basket.
// LineItems.
// Where(li => li.IsGiftVoucherItem == false).
// Sum(li => li.LineItemPrice);
//var maxVoucherDisount = notGiftedLineItemsPrice - voucher.Discount;
//if(maxVoucherDisount > 0)
//{
// basket.TotalDiscount = basket.TotalDiscount + voucher.Discount;
// basket.TotalPrice = basket.TotalPrice - discountToBeApplied;
//}
//if (basket.TotalPrice < 0)
//{
// basket.TotalPrice = 0;
//}
//basket.VoucherApplied = true;
//basket.VoucherDiscount = voucher.Discount;
}
}
}