/// <summary>
/// 添加购物车商品到当前会话
/// 如果商品已在购物车则增加里面的数量
/// </summary>
/// <param name="productId">商品Id</param>
/// <param name="type">购物车商品类型</param>
/// <param name="parameters">匹配参数</param>
public virtual void AddCartProduct(
Guid productId, CartProductType type, ProductMatchParameters parameters)
{
// 检查是否允许非会员下单
var configManager = Application.Ioc.Resolve <GenericConfigManager>();
var settings = configManager.GetData <OrderSettings>();
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var session = sessionManager.GetSession();
var user = session.GetUser();
if (user == null && !settings.AllowAnonymousVisitorCreateOrder)
{
throw new ForbiddenException(new T("Create order require user logged in"));
}
// 调用仓储添加购物车商品
using (UnitOfWork.Scope()) {
var repository = Application.Ioc.Resolve <CartProductRepository>();
repository.AddOrIncrease(session, productId, type, parameters);
}
// 非会员登录时，在购物车商品添加成功后需要延长会话时间
if (user == null)
{
session.SetExpiresAtLeast(SessionExpireDaysForNonUserPurcharse);
sessionManager.SaveSession();
}
// 删除相关的缓存
CartProductTotalCountCache.Remove(type);
}
/// <summary>
/// 获取当前会话下的购物车商品列表
/// 为了保证数据的实时性，这个函数不使用缓存
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual IList <CartProduct> GetCartProducts(CartProductType type)
{
var sessionManager = Application.Ioc.Resolve <SessionManager>();
return(UnitOfWork.ReadRepository <CartProductRepository, IList <CartProduct> >(r =>
r.GetManyBySession(sessionManager.GetSession(), type).OrderBy(c => c.Id).ToList()));
}
/// <summary>
/// 获取当前会话下的购物车商品列表
/// 为了保证数据的实时性，这个函数不使用缓存
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual IList <CartProduct> GetCartProducts(CartProductType type)
{
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var session = sessionManager.GetSession();
var repository = Application.Ioc.Resolve <CartProductRepository>();
using (UnitOfWork.Scope()) {
return(repository
.GetManyBySession(sessionManager.GetSession(), type)
.OrderBy(c => c.Id).ToList());
}
}
/// <summary>
/// 获取购物车商品的总数量(商品 * 订购数量)
/// 结果会按当前用户Id和购物车商品类型缓存一定时间
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual long GetCartProductTotalCount(CartProductType type)
{
return(CartProductTotalCountCache.GetOrCreate(type, () => {
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var session = sessionManager.GetSession();
var repository = Application.Ioc.Resolve <CartProductRepository>();
using (UnitOfWork.Scope()) {
return repository
.GetManyBySession(sessionManager.GetSession(), type)
.Sum(p => (long?)p.Count);
}
}, CartProductTotalCountCacheTime) ?? 0);
}
/// <summary>
/// 获取购物车商品的总数量(商品 * 订购数量)
/// 结果会按当前用户Id和购物车商品类型缓存一定时间
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual long GetCartProductTotalCount(CartProductType type)
{
// 从缓存获取
var count = CartProductTotalCountCache.GetOrDefault(type);
if (count != null)
{
return(count.Value);
}
// 从数据库获取
var sessionManager = Application.Ioc.Resolve <SessionManager>();
count = UnitOfWork.ReadRepository <CartProductRepository, long>(r =>
r.GetManyBySession(sessionManager.GetSession(), type).Sum(p => (long?)p.Count) ?? 0);
// 保存到缓存并返回
CartProductTotalCountCache.Put(type, count, CartProductTotalCountCacheTime);
return(count.Value);
}
/// <summary>
/// 获取当前会话中的购物车的信息
/// 为了保证数据的实时性，这个函数不使用缓存
/// </summary>
/// <param name="type">购物车类型</param>
/// <returns></returns>
public virtual object GetCartApiInfo(CartProductType type)
{
// 购物车商品显示信息
var cartProducts = GetCartProducts(type);
var displayInfos = cartProducts.Select(c => c.ToOrderProductDisplayInfo()).ToList();
var anyRealProducts = displayInfos.Any(d => d.IsRealProduct);
// 收货地址表单
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var orderManager = Application.Ioc.Resolve <SellerOrderManager>();
var user = sessionManager.GetSession().GetUser();
var userId = user?.Id;
var shippingAddressForm = new ShippingAddressForm();
shippingAddressForm.Bind();
// 订单留言表单
var commentForm = new CreateOrderCommenForm();
commentForm.Bind();
// 物流列表，各个卖家都有单独的列表
// 没有实体商品的卖家不包含在列表中
var sellers = displayInfos
.Where(d => d.IsRealProduct)
.Select(d => new { d.SellerId, d.Seller }).GroupBy(d => d.SellerId);
var logisticsWithSellers = sellers.Select(s => new {
sellerId = s.Key,
seller = s.First().Seller,
logisticsList = orderManager.GetAvailableLogistics(userId, s.Key)
.Select(l => l.ToLiquid()).ToList()
}).ToList();
// 支付接口列表，各个卖家使用同一个列表
// 卖家不应该提供单独的支付接口，应该使用结算处理
var paymentApis = orderManager.GetAvailablePaymentApis(userId)
.Select(a => a.ToLiquid()).ToList();
// 订单创建表单
var createOrderForm = new CreateOrderForm();
createOrderForm.Bind();
return(new {
displayInfos, anyRealProducts,
shippingAddressForm, commentForm,
logisticsWithSellers, paymentApis, createOrderForm,
});
}
/// <summary>
/// 添加购物车商品
/// 如果商品已在购物车则增加里面的数量
/// </summary>
/// <param name="session">会话</param>
/// <param name="productId">商品Id</param>
/// <param name="type">购物车商品类型</param>
/// <param name="parameters">商品匹配参数</param>
public virtual void AddOrIncrease(Session session,
Guid productId, CartProductType type, ProductMatchParameters parameters)
{
// 判断商品是否可以购买（只判断商品本身，不判断规格等匹配参数）
var productRepository = Application.Ioc.Resolve <ProductRepository>();
var product = productRepository.Get(p => p.Id == productId);
if (product == null)
{
throw new BadRequestException(new T("The product you are try to purchase does not exist."));
}
else if (!(product.GetProductState() is IAmPurchasable))
{
throw new BadRequestException(new T("The product you are try to purchase does not purchasable."));
}
// 获取订购数量
var orderCount = parameters.GetOrderCount();
if (orderCount <= 0)
{
throw new BadRequestException(new T("Order count must larger than 0"));
}
// 立刻购买时删除原有的购物车商品列表
// 加入购物车时获取现有的购物车商品列表，判断是否可以增加已有的数量
CartProduct increaseTo = null;
var existCartProducts = GetManyBySession(session, type).ToList();
if (type == CartProductType.Buynow)
{
existCartProducts.ForEach(p => Delete(p));
}
else
{
var comparers = Application.Ioc.ResolveMany <IProductMatchParametersComparer>();
increaseTo = existCartProducts.FirstOrDefault(cartProduct => {
// 比较商品是否相同
if (cartProduct.Product.Id != product.Id)
{
return(false);
}
// 比较匹配参数是否相同
var existParameters = cartProduct.MatchParameters;
return(comparers.All(c => c.IsPartialEqual(parameters, existParameters)));
});
}
// 修改到数据库
if (increaseTo != null)
{
// 修改已有的数量
Save(ref increaseTo, p => p.UpdateOrderCount(checked (p.Count + orderCount)));
}
else
{
// 添加新的购物车商品
var configManager = Application.Ioc.Resolve <GenericConfigManager>();
var orderSettings = configManager.GetData <OrderSettings>();
var userRepository = Application.Ioc.Resolve <UserRepository>();
var now = DateTime.UtcNow;
var cartProduct = new CartProduct()
{
Type = type,
Owner = userRepository.Get(u => u.Id == session.ReleatedId),
OwnerSessionId = (session.ReleatedId != null) ? null : (Guid?)session.Id,
Product = product,
Count = orderCount,
MatchParameters = parameters,
CreateTime = now,
ExpireTime = now.AddDays(
(type == CartProductType.Buynow) ?
orderSettings.BuynowCartProductExpiresDays :
orderSettings.NormalCartProductExpiresDays)
};
Save(ref cartProduct);
}
}