public virtual async Task EvaluatePromotionsAsync()
{
EnsureCartExists();
bool isReadOnlyLineItems = Cart.Items.Any(i => i.IsReadOnly);
if (!isReadOnlyLineItems)
{
//Get product inventory to fill InStockQuantity parameter of LineItem
var products = await GetCartProductsAsync();
foreach (var lineItem in Cart.Items.ToList())
{
var product = products.FirstOrDefault(p => p.Id == lineItem.ProductId);
lineItem.InStockQuantity = (int)await _productAvailabilityService.GetAvailableQuantity(product);
}
var evalContext = Cart.ToPromotionEvaluationContext();
await _promotionEvaluator.EvaluateDiscountsAsync(evalContext, new IDiscountable[] { Cart });
}
}
protected virtual async Task ValidateCartItemsAsync()
{
var productIds = Cart.Items.Select(i => i.ProductId).ToArray();
var cacheKey = "CartBuilder.ValidateCartItemsAsync:" + Cart.Id + ":" + string.Join(":", productIds);
var products = await _cacheManager.GetAsync(cacheKey, "ApiRegion", async() => await _catalogSearchService.GetProductsAsync(productIds, ItemResponseGroup.ItemWithPrices | ItemResponseGroup.ItemWithDiscounts | ItemResponseGroup.Inventory));
foreach (var lineItem in Cart.Items.ToList())
{
lineItem.ValidationErrors.Clear();
var product = products.FirstOrDefault(p => p.Id == lineItem.ProductId);
if (product == null || !product.IsActive || !product.IsBuyable)
{
lineItem.ValidationErrors.Add(new UnavailableError());
lineItem.IsValid = false;
}
else
{
var isProductAvailable = await _productAvailabilityService.IsAvailable(product, lineItem.Quantity);
if (!isProductAvailable)
{
lineItem.IsValid = false;
var availableQuantity = await _productAvailabilityService.GetAvailableQuantity(product);
lineItem.ValidationErrors.Add(new QuantityError(availableQuantity));
}
var tierPrice = product.Price.GetTierPrice(lineItem.Quantity);
if (tierPrice.Price > lineItem.SalePrice)
{
lineItem.ValidationErrors.Add(new PriceError(lineItem.SalePrice, lineItem.SalePriceWithTax, tierPrice.Price, tierPrice.PriceWithTax));
}
}
}
}
