private ShoppingCart CreateSessionCart(IDictionary<string, object> session)
{
var cart = new ShoppingCart();
_db.ShoppingCarts.Add(cart);
_db.SaveChanges();
session[CART_SESSION_KEY] = cart.Id;
return cart;
}
private ShoppingCart CreateUserCart(User user)
{
var cart = new ShoppingCart
{
User = user
};
_db.ShoppingCarts.Add(cart);
_db.SaveChanges();
return cart;
}
private ShoppingCart MigrateCart(int? shoppingCartId, User user)
{
if (!shoppingCartId.HasValue)
{
return null;
}
var cart = _db.ShoppingCarts.FirstOrDefault(c=>c.Id == shoppingCartId);
if (cart == null)
{
return null;
}
var newCart = new ShoppingCart
{
User = user
};
newCart.ReplaceItems(cart.Items);
return newCart;
}