/// <summary>
/// Attempts to add a coupon offer to the sale.
/// </summary>
/// <param name="offerCode">
/// The offer code.
/// </param>
/// <returns>
/// The <see cref="ICouponRedemptionResult"/>.
/// </returns>
public ICouponRedemptionResult RedeemCouponOffer(string offerCode)
{
var couponAttempt = this.GetCouponAttempt(offerCode);
if (!couponAttempt)
{
return(new CouponRedemptionResult(couponAttempt.Exception));
}
var coupon = couponAttempt.Result;
var validationItems = this.PrepareInvoice();
var result = TryApplyOffer <ILineItemContainer, ILineItem>(LineItemExtensions.CreateNewItemCacheLineItemContainer(validationItems.Items.Where(x => x.LineItemType != LineItemType.Tax)), offerCode).AsCouponRedemptionResult(coupon);
if (!result.Success)
{
return(result);
}
// check if there are any previously added coupons and if so revalidate them with the new coupon added.
// Use case: First coupon added has the "not usable with other coupons constraint" and then a second coupon is added.
// In this case the first coupon needs to be revalidated. If the attempt to apply the coupon again fails, the one currently
// being added needs to fail.
if (OfferCodes.Any())
{
// Now we have to revalidate any existing coupon offers to make sure the newly approved ones will still be valid.
var clone = this.CreateNewLineContainer(ItemCache.Items.Where(x => x.LineItemType != LineItemType.Discount));
_couponManager.Value.SafeAddCouponAttemptContainer <ItemCacheLineItem>(clone, result);
ICouponRedemptionResult redemption = new CouponRedemptionResult(result.Award, result.Messages);
foreach (var oc in OfferCodes)
{
redemption = DoTryApplyOffer <ILineItemContainer, ILineItem>(clone, oc).AsCouponRedemptionResult(coupon);
if (!redemption.Success)
{
if (redemption.Messages.Any())
{
result.AddMessage(redemption.Messages);
}
result.Exception = redemption.Exception;
result.Success = false;
break;
}
_couponManager.Value.SafeAddCouponAttemptContainer <ItemCacheLineItem>(clone, result);
}
if (!redemption.Success)
{
return(redemption);
}
}
this.SaveOfferCode(offerCode);
return(result);
}
/// <summary>
/// Removes an offer code from the OfferCodes collection.
/// </summary>
/// <param name="offerCode">
/// The offer code.
/// </param>
public void RemoveOfferCode(string offerCode)
{
if (OfferCodes.Contains(offerCode))
{
_offerCodeTempData.Value.Remove(offerCode);
this.SaveOfferCodes();
}
}
/// <summary>
/// Saves offer code.
/// </summary>
/// <param name="offerCode">
/// The offer code.
/// </param>
/// <returns>
/// The <see cref="bool"/>.
/// </returns>
protected bool SaveOfferCode(string offerCode)
{
if (!OfferCodes.Contains(offerCode))
{
_offerCodeTempData.Value.Add(offerCode);
this.SaveOfferCodes();
return(true);
}
return(false);
}
