private IEnumerable <IGrouping <int, CartItem> > GroupCartItemsByShippingAddress(CartItemCollection cartItems, int defaultShippingAddressId)
{
return(cartItems
.Select(ci => new
{
ShippingAddressId = ci.ShippingAddressID > 0 ? ci.ShippingAddressID : defaultShippingAddressId,
CartItems = ci,
})
.GroupBy(o => o.ShippingAddressId, o => o.CartItems));
}
private string GetCartHash(CartItemCollection cartItems, Customer customer, IEnumerable <OrderOption> orderOptions)
{
var originAddress = GetOriginAddress();
string cartComposite = cartItems
.Select(c => new
{
CartItem = c,
Address = new Address(c.ShippingAddressID)
})
.Aggregate(
String.Format("{0}_{1}_{2}_{3}_{4}_{5}_{6}_{7}_{8}_{9}_{10}",
originAddress.City,
originAddress.Region,
originAddress.PostalCode,
customer.PrimaryShippingAddress.City,
customer.PrimaryShippingAddress.State,
customer.PrimaryShippingAddress.Zip,
customer.LevelHasNoTax,
cartItems.DiscountResults.Sum(dr => dr.OrderTotal),
cartItems.DiscountResults.Sum(dr => dr.ShippingTotal),
cartItems.DiscountResults.Sum(dr => dr.LineItemTotal),
orderOptions.Aggregate("_", (s, oo) => String.Format("{0}_{1}_{2}_{3}", s, oo.ID, oo.TaxClassID, oo.Cost))),
(s, o) => String.Format("{0}_{1}_{2}_{3}_{4}_{5}_{6}_{7}_{8}",
s,
o.CartItem.ShoppingCartRecordID,
o.CartItem.VariantID,
o.CartItem.Quantity,
o.CartItem.Price,
o.CartItem.IsTaxable,
o.CartItem.TaxClassID,
o.CartItem.ShippingAddressID,
o.CartItem.ShippingMethodID)
);
using (var md5 = System.Security.Cryptography.MD5CryptoServiceProvider.Create())
{
var hash = md5.ComputeHash(System.Text.Encoding.UTF8.GetBytes(cartComposite));
return(hash.Aggregate(String.Empty, (s, b) => String.Format("{0}{1:x2}", s, b)));
}
}