public async Task <ValidationResult> CheckGiftCard(GetBasketModel basket, string voucherCode)
{
// Check if voucher already exists on basket
// Don't want to actually remove the card from the pool until order has been placed
if (basket.RedeemedCards.Any(card => card.VoucherCode == voucherCode))
{
return(new ValidationResult
{
Success = false,
Message = "Voucher already redeemed"
});
}
// Does the voucher exist in the store?
var giftCard = await this.giftCardRepository.GetGiftCard(voucherCode);
if (giftCard == null)
{
return(new ValidationResult
{
Success = false,
Message = "Not a valid voucher code"
});
}
return(new ValidationResult
{
Success = true
});
}
private async Task <List <StockItem> > GetItems(GetBasketModel basket)
{
var basketItems = new List <StockItem>();
var groups = basket.Items.GroupBy(item => item.ProductId);
foreach (var group in groups)
{
var stockItem = await this.stockItemRepository.GetItem(group.First().ProductId);
basketItems.AddRange(Enumerable.Repeat(stockItem, group.Count()));
}
return(basketItems);
}
public async Task <ValidationResult> CheckOffer(GetBasketModel basket, string offerCode)
{
var offer = await this.offerRepository.GetOffer(offerCode);
if (offer == null)
{
return(new ValidationResult
{
Success = false,
Message = "Offer code does not exist"
});
}
// Are there items that it applies to
var basketItems = await this.GetItems(basket);
var itemTags = basketItems.SelectMany(item => item.Tags);
if (offer.ApplicableItems.Any() &&
!itemTags.Intersect(offer.ApplicableItems).Any())
{
return(new ValidationResult
{
Success = false,
Message = $"There are no products in your basket applicable to voucher {offerCode}"
});
}
// Have we met the minimum-spend threshold
if (basket.DiscountableTotal < offer.Threshold)
{
var difference = offer.Threshold - basket.DiscountableTotal;
return(new ValidationResult
{
Success = false,
Message = $"You have not reached the spend threshold for voucher {offerCode}. Spend another £{difference} to receive £{offer.Value} discount from your basket total"
});
}
return(new ValidationResult
{
Success = true
});
}