/// <summary>
/// 初始化一个<c>ShoppingCartItem</c>类型的实例。
/// </summary>
/// <param name="product">属于该购物篮项目的笔记本电脑商品实体。</param>
/// <param name="shoppingCart">拥有该购物篮项目的购物篮实体。</param>
public ShoppingCartItem(Product product, ShoppingCart shoppingCart, int quantity)
{
this.quantity = quantity;
this.product = product;
this.shoppingCart = shoppingCart;
}
/// <summary>
/// 为当前用户创建购物篮。
/// </summary>
/// <returns>已创建的购物篮实例，该购物篮为当前用户所用。</returns>
public ShoppingCart CreateShoppingCart()
{
ShoppingCart shoppingCart = new ShoppingCart();
shoppingCart.User = this;
return shoppingCart;
}
/// <summary>
/// 通过指定的用户及其所拥有的购物篮实体，创建销售订单。
/// </summary>
/// <param name="user">用户实体。</param>
/// <param name="shoppingCart">购物篮实体。</param>
/// <returns>销售订单实体。</returns>
public SalesOrder CreateSalesOrder(User user, ShoppingCart shoppingCart)
{
var shoppingCartItems = _shoppingCartItemRepository.FindItemsByCart(shoppingCart);
var cartItems = shoppingCartItems as IList<ShoppingCartItem> ?? shoppingCartItems.ToList();
if (shoppingCartItems == null ||
!cartItems.Any())
throw new InvalidOperationException("购物篮中没有任何物品。");
var salesOrder = new SalesOrder {SalesLines = new List<SalesLine>()};
foreach (var shoppingCartItem in cartItems)
{
var salesLine = shoppingCartItem.ConvertToSalesLine();
salesLine.SalesOrder = salesOrder;
salesOrder.SalesLines.Add(salesLine);
_shoppingCartItemRepository.Remove(shoppingCartItem);
}
salesOrder.User = user;
salesOrder.Status = SalesOrderStatus.Paid;
_salesOrderRepository.Add(salesOrder);
_repositoryContext.Commit();
return salesOrder;
}
/// <summary>
/// 初始化一个<c>ShoppingCartItem</c>类型的实例。
/// </summary>
/// <param name="product">属于该购物篮项目的笔记本电脑商品实体。</param>
/// <param name="shoppingCart">拥有该购物篮项目的购物篮实体。</param>
/// <param name="quantity">拥有该购物篮项目的购物篮数量实体。</param>
public ShoppingCartItem(Product product, ShoppingCart shoppingCart, int quantity)
{
_quantity = quantity;
_product = product;
_shoppingCart = shoppingCart;
}
/// <summary>
/// 为当前用户创建购物篮。
/// </summary>
/// <returns>已创建的购物篮实例，该购物篮为当前用户所用。</returns>
public ShoppingCart CreateShoppingCart()
{
var shoppingCart = new ShoppingCart {User = this};
return shoppingCart;
}