/// <summary>
/// 返回匹配的商品匹配数据
/// </summary>
/// <param name="list">商品匹配数据的列表</param>
/// <param name="matchParameters">商品匹配参数</param>
/// <returns></returns>
public static IEnumerable <ProductMatchedData> WhereMatched(
this IEnumerable <ProductMatchedData> list, ProductMatchParameters matchParameters)
{
var matchers = Application.Ioc.ResolveMany <IProductMatchedDataMatcher>();
return(list.Where(data => matchers.All(m => m.IsMatched(matchParameters, data))));
}
/// <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>
/// 判断是否匹配
/// </summary>
public bool IsMatched(ProductMatchParameters parameters, ProductMatchedData data)
{
// 获取规格的条件
// 格式 [ { PropertyId: ..., PropertyValueId: ... }, ... ]
var exceptedProperties = data.Conditions.GetProperties();
if (exceptedProperties == null || !exceptedProperties.Any())
{
return(true); // 没有指定条件
}
// 判断参数中的规格值列表是否包含条件中的所有规格值
// 例如 参数 { 颜色: 黑色, 尺码: XXS, 款式: 2013 }, 条件 { 颜色: 黑色, 尺码: XXS }时匹配成功
// 参数的格式同上
var incomeProperties = parameters.GetProperties();
if (incomeProperties == null || !incomeProperties.Any())
{
return(false); // 有指定条件，但参数中没有包含任何规格值
}
var incomePropertiesMapping = new Dictionary <long, long?>();
foreach (var obj in incomeProperties)
{
incomePropertiesMapping[obj.PropertyId] = obj.PropertyValueId;
}
return(exceptedProperties.All(obj => {
return incomePropertiesMapping.GetOrDefault(obj.PropertyId) == obj.PropertyValueId;
}));
}
/// <summary>
/// 获取商品匹配参数的描述
/// </summary>
/// <param name="product">商品</param>
/// <param name="parameters">商品匹配参数</param>
/// <returns></returns>
public static string GetMatchParametersDescription(
this Domain.Entities.Product product,
ProductMatchParameters parameters)
{
var descriptionProviders = Application.Ioc
.ResolveMany <IProductMatchParametersDescriptionProvider>();
return(string.Join(" ", descriptionProviders
.OrderBy(p => p.DisplayOrder)
.Select(p => p.GetDescription(product, parameters))
.Where(d => !string.IsNullOrEmpty(d))));
}
/// <summary>
/// 获取描述，没有时返回null
/// </summary>
public string GetDescription(Product product, ProductMatchParameters parameters)
{
var data = product.MatchedDatas
.Where(d => !string.IsNullOrEmpty(d.ItemNo))
.WhereMatched(parameters).FirstOrDefault();
if (data != null)
{
return(new T("ItemNo: {0}", data.ItemNo));
}
return(null);
}
/// <summary>
/// 判断是否匹配
/// </summary>
public bool IsMatched(ProductMatchParameters parameters, ProductMatchedData data)
{
// 获取订购数量的条件
var orderCountGE = data.Conditions.GetOrderCountGE();
if (orderCountGE == null || orderCountGE <= 1)
{
return(true); // 没有指定条件
}
// 判断订购数量是否大于条件中指定的数量
var orderCount = parameters.GetOrderCount();
return(orderCount >= orderCountGE.Value);
}
/// <summary>
/// 获取描述，没有时返回null
/// </summary>
public string GetDescription(Database.Product product, ProductMatchParameters parameters)
{
var properties = parameters.GetProperties();
if (properties == null || properties.Count <= 0)
{
return(null);
}
var parts = new List <string>();
foreach (var productToPropertyValue in product.FindPropertyValuesFromPropertyParameters(properties))
{
parts.Add(string.Format("{0}: {1}",
new T(productToPropertyValue.Property.Name),
new T(productToPropertyValue.PropertyValueName)));
}
return(string.Join(" ", parts));
}
/// <summary>
/// 判断商品匹配参数是否部分相等
/// </summary>
public bool IsPartialEqual(
ProductMatchParameters lhs, ProductMatchParameters rhs)
{
var propertiesLhs = lhs.GetProperties();
var propertiesRhs = rhs.GetProperties();
if (propertiesLhs == null && propertiesRhs == null)
{
return(true);
}
else if (propertiesLhs == null || propertiesRhs == null)
{
return(false);
}
var disinctCount = propertiesLhs.Concat(propertiesRhs) // 计算并集去除重复后的大小
.Select(p => new Pair <long, long>(p.PropertyId, p.PropertyValueId)).Distinct().Count();
return(propertiesLhs.Count == disinctCount && propertiesLhs.Count == propertiesRhs.Count);
}
/// <summary>
/// 初始化
/// </summary>
public CartProduct() {
MatchParameters = new ProductMatchParameters();
}
/// <summary>
/// 设置订购数量
/// </summary>
/// <param name="parameters">商品匹配参数</param>
/// <param name="orderCount">订购数量</param>
public static void SetOrderCount(this ProductMatchParameters parameters, long orderCount)
{
parameters["OrderCount"] = orderCount;
}
/// <summary>
/// 获取订购数量
/// </summary>
/// <param name="parameters">商品匹配参数</param>
/// <returns></returns>
public static long GetOrderCount(this ProductMatchParameters parameters)
{
return(parameters.GetOrDefault <long?>("OrderCount") ?? 0);
}
/// <summary>
/// 获取商品属性参数
/// </summary>
/// <param name="parameters">商品匹配参数</param>
/// <returns></returns>
public static IList <PropertyParameter> GetProperties(this ProductMatchParameters parameters)
{
return(parameters.GetOrDefault <IList <PropertyParameter> >("Properties"));
}
/// <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);
}
}
/// <summary>
/// 初始化
/// </summary>
public OrderProduct()
{
MatchParameters = new ProductMatchParameters();
PropertyValues = new HashSet <OrderProductToPropertyValue>();
Deliveries = new HashSet <OrderDeliveryToOrderProduct>();
}
/// <summary>
/// 初始化
/// </summary>
public CreateOrderProductParameters()
{
MatchParameters = new ProductMatchParameters();
Extra = new Dictionary <string, object>();
}