protected virtual Task ValidateCartItemsAsync()
{
foreach (var lineItem in Cart.Items.ToList())
{
lineItem.ValidationErrors.Clear();
if (lineItem.Product == null || !lineItem.Product.IsActive || !lineItem.Product.IsBuyable)
{
lineItem.ValidationErrors.Add(new UnavailableError());
}
else
{
var isProductAvailable = new ProductIsAvailableSpecification(lineItem.Product).IsSatisfiedBy(lineItem.Quantity);
if (!isProductAvailable)
{
var availableQuantity = lineItem.Product.AvailableQuantity;
lineItem.ValidationErrors.Add(new QuantityError(availableQuantity));
}
var tierPrice = lineItem.Product.Price.GetTierPrice(lineItem.Quantity);
if (tierPrice.Price > lineItem.SalePrice)
{
lineItem.ValidationErrors.Add(new PriceError(lineItem.SalePrice, lineItem.SalePriceWithTax, tierPrice.Price, tierPrice.PriceWithTax));
}
}
lineItem.IsValid = !lineItem.ValidationErrors.Any();
}
return(Task.CompletedTask);
}
protected virtual async Task ValidateCartItemsAsync()
{
var products = await GetCartProductsAsync();
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 = new ProductIsAvailableSpecification(product).IsSatisfiedBy(lineItem.Quantity);
if (!isProductAvailable)
{
lineItem.IsValid = false;
var availableQuantity = product.AvailableQuantity;
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));
}
}
}
}
public virtual async Task AddItemAsync(Product product, int quantity)
{
EnsureCartExists();
var isProductAvailable = new ProductIsAvailableSpecification(product).IsSatisfiedBy(quantity);
if (isProductAvailable)
{
var lineItem = product.ToLineItem(Cart.Language, quantity);
await AddLineItemAsync(lineItem);
}
}
public ActionResult <IEnumerable <ProductDetails> > GetActive()
{
using (var context = new ProductContext())
{
// In EF for .Net Framework logging can be turned on by:
// context.Database.Log = s => Console.WriteLine(s);
var specification = new ProductIsAvailableSpecification().And(new ProductHasEnoughStockSpecification());
return(context.Products
.Where(specification)
.Select(ProductDetails.FromDb)
.ToList());
}
}
public CartLineItemValidator(ShoppingCart cart)
{
RuleSet("strict", () =>
{
RuleFor(x => x).Custom((lineItem, context) =>
{
lineItem.ValidationErrors.Clear();
if (lineItem.Product == null || !lineItem.Product.IsActive || !lineItem.Product.IsBuyable)
{
var unavailableError = new UnavailableError();
lineItem.ValidationErrors.Add(unavailableError);
context.AddFailure(new ValidationFailure(nameof(lineItem.Product), "The product is not longer available for purchase"));
}
else if (lineItem.Product.Price == null || lineItem.Product.Price.GetTierPrice(lineItem.Quantity).Price == 0)
{
var unavailableError = new UnavailableError();
lineItem.ValidationErrors.Add(unavailableError);
}
else
{
var isProductAvailable = new ProductIsAvailableSpecification(lineItem.Product).IsSatisfiedBy(lineItem.Quantity);
if (!isProductAvailable)
{
var availableQuantity = lineItem.Product.AvailableQuantity;
var qtyError = new QuantityError(availableQuantity);
lineItem.ValidationErrors.Add(qtyError);
context.AddFailure(new ValidationFailure(nameof(lineItem.Product.AvailableQuantity), "The product available qty is changed"));
}
var tierPrice = lineItem.Product.Price.GetTierPrice(lineItem.Quantity);
if (tierPrice.Price != lineItem.SalePrice)
{
var priceError = new PriceError(lineItem.SalePrice, lineItem.SalePriceWithTax, tierPrice.Price, tierPrice.PriceWithTax);
lineItem.ValidationErrors.Add(priceError);
context.AddFailure(new ValidationFailure(nameof(lineItem.SalePrice), "The product price is changed"));
}
}
});
});
}
public void ShouldReturnCorrectResults()
{
var isAvailable = new ProductIsAvailableSpecification();
var products = new List <Product>
{
new Product
{
ProductId = 1,
IsActive = true
},
new Product
{
ProductId = 2,
IsActive = false
}
};
var availableProducts = products.AsQueryable().Where(isAvailable).ToList();
Assert.AreEqual(availableProducts.Count, 1);
Assert.AreEqual(availableProducts.Single().ProductId, 1);
}
