public override IDiscountResult ApplyPromotion(IPromotionUsage promotionUsage, IRuleContext ruleContext, IDiscountContext discountContext, Func <IDiscountResult> resultFactory)
{
IDiscountResult retVal = resultFactory();
retVal.DiscountType = this.DiscountType;
retVal.SequenceType = (PromotionSequence)SequenceNumber;
List <DiscountedItem> discountedItems = new List <DiscountedItem>();
Decimal lineItemTotal = decimal.Zero;
foreach (DiscountableItem item in discountContext.DiscountableItems)
{
DiscountedItem discountedItem = new DiscountedItem();
discountedItem.CartPrice = item.CartPrice;
discountedItem.IsAGift = false;
discountedItem.ProductId = item.ProductId;
discountedItem.Quantity = item.Quantity;
discountedItem.ShoppingCartRecordId = item.ShoppingCartRecordId;
discountedItem.Sku = item.Sku;
discountedItem.Subtotal = item.Subtotal;
discountedItem.VariantId = item.VariantId;
discountedItem.DiscountPercentage = decimal.Zero;
discountedItem.DiscountType = this.DiscountType;
discountedItem.PromotionUsage = promotionUsage;
switch (DiscountType)
{
case DiscountType.Fixed:
Decimal maximumDiscount = this.DiscountAmount;
if (this.DiscountAmount > discountedItem.CartPrice)
{
maximumDiscount = discountedItem.CartPrice;
}
Decimal fixedDiscount = -(maximumDiscount) * item.Quantity;
lineItemTotal += fixedDiscount;
discountedItem.DiscountAmount = fixedDiscount;
break;
case DiscountType.Percentage:
Decimal percentDiscount = -item.Subtotal * this.DiscountAmount;
lineItemTotal += percentDiscount;
discountedItem.DiscountAmount = percentDiscount;
discountedItem.DiscountPercentage = this.DiscountAmount;
break;
}
Data.ContextController.TrackLineItemDiscount(discountedItem);
discountedItems.Add(discountedItem);
}
retVal.LineItemTotal = lineItemTotal;
retVal.DiscountedItems = discountedItems;
return(retVal);
}
public override IDiscountResult ApplyPromotion(IPromotionUsage promotionUsage, IRuleContext ruleContext, IDiscountContext discountContext, Func <IDiscountResult> resultFactory)
{
Data.EntityContextDataContext context = new Data.EntityContextDataContext();
IDiscountResult retVal = resultFactory();
Decimal totalDiscount = Decimal.Zero;
List <DiscountedItem> discountedItems = new List <DiscountedItem>();
Int32 quantity = 1;
Int32 contextQuantity = discountContext.DiscountableItems.Sum(s => s.Quantity);
Int32 shoppingCartRecordId = 0;
if (MatchQuantities && contextQuantity > 0)
{
quantity = discountContext.DiscountableItems.Sum(s => s.Quantity);
}
foreach (Int32 productId in GiftProductIds)
{
Data.ShoppingCart cart = null;
//Try to find an existing free gift in the promotionlineitem table for this promousage
PromotionLineItem giftItem = context.PromotionLineItems.FirstOrDefault(pli => pli.productId == productId && pli.isAGift && pli.PromotionUsageId == promotionUsage.Id);
//Try to grab the shopping cart item for the promolineitem
if (giftItem != null)
{
cart = context.ShoppingCarts.FirstOrDefault(sc => sc.ShoppingCartRecID == giftItem.shoppingCartRecordId);
}
//Add the free item to the shoppingcart if it doesn't already exist
if (cart == null)
{
int variantId = context.ProductVariants.FirstOrDefault(pv => pv.ProductID == productId && pv.IsDefault == 1).VariantID;
if (ruleContext.AddItemToCart != null)
{
shoppingCartRecordId = ruleContext.AddItemToCart(productId, variantId, quantity);
}
cart = context.ShoppingCarts.FirstOrDefault(sc => sc.ShoppingCartRecID == shoppingCartRecordId);
}
else
{
//Make sure our quantities match up.
cart.Quantity = quantity;
context.SubmitChanges();
}
if (cart != null)
{
DiscountedItem discountedItem = new DiscountedItem();
//We store the original price of the item in the promotionlineitem table, we want to use that original price if we already have a promo line item
discountedItem.CartPrice = giftItem == null ? (decimal)cart.ProductPrice : giftItem.cartPrice;
discountedItem.IsAGift = true;
discountedItem.ProductId = productId;
discountedItem.Quantity = cart.Quantity;
discountedItem.ShoppingCartRecordId = cart.ShoppingCartRecID;
discountedItem.Sku = cart.ProductSKU;
discountedItem.Subtotal = (decimal)cart.ProductPrice * cart.Quantity;
discountedItem.VariantId = cart.VariantID;
discountedItem.PromotionUsage = promotionUsage;
decimal discount = -(discountedItem.CartPrice) * (GiftDiscountPercentage * .01m);
//Make sure our price won't go negative
discount = Math.Abs(discount) > discountedItem.CartPrice ? -(discountedItem.CartPrice) : discount;
//The discount is already baked into the cart price we will record the discount in gift amount instead
discountedItem.DiscountAmount = 0.0M;
discountedItem.GiftAmount = discount * cart.Quantity;
totalDiscount += discountedItem.GiftAmount;
discountedItem.DiscountPercentage = GiftDiscountPercentage;
Data.ContextController.TrackLineItemDiscount(discountedItem);
discountedItems.Add(discountedItem);
cart.ProductPrice = discountedItem.CartPrice + discount;
cart.IsGift = true;
cart.CustomerEntersPrice = 1;
context.SubmitChanges();
}
}
retVal.DiscountedItems = discountedItems;
retVal.DiscountType = DiscountType.Fixed;
retVal.GiftProductTotal = totalDiscount;
retVal.SequenceType = (PromotionSequence)SequenceNumber;
return(retVal);
}
