/// <summary>
/// 从购物车商品构建订单商品创建参数
/// </summary>
/// <param name="cartProduct">购物车商品</param>
/// <returns></returns>
public static CreateOrderProductParameters ToCreateOrderProductParameters(
this CartProduct cartProduct)
{
var parameters = new CreateOrderProductParameters();
parameters.ProductId = cartProduct.Product.Id;
parameters.MatchParameters = cartProduct.MatchParameters;
parameters.Extra["cartProductId"] = cartProduct.Id;
return(parameters);
}
/// <summary>
/// 计算订单商品的单价
/// 返回价格保证大于或等于0
/// </summary>
/// <param name="userId">用户Id，未登录时等于null</param>
/// <param name="parameters">创建订单商品的参数</param>
/// <returns></returns>
public virtual OrderPriceCalcResult CalculateOrderProductUnitPrice(
Guid?userId, CreateOrderProductParameters parameters)
{
var result = new OrderPriceCalcResult();
var calculators = Application.Ioc.ResolveMany <IOrderProductUnitPriceCalculator>();
foreach (var calculator in calculators)
{
calculator.Calculate(userId, parameters, result);
}
if (result.Parts.Sum() < 0)
{
throw new BadRequestException(new T("Order product unit price must not be negative"));
}
return(result);
}
/// <summary>
/// 从商品匹配数据获取匹配的价格和货币单位
/// </summary>
public void Calculate(
long?userId, CreateOrderProductParameters parameters, OrderPriceCalcResult result)
{
var currencyManager = Application.Ioc.Resolve <CurrencyManager>();
var productManager = Application.Ioc.Resolve <ProductManager>();
var product = productManager.GetProduct(parameters.ProductId);
if (product == null)
{
throw new BadRequestException(new T("The product you are try to purchase does not exist."));
}
var data = product.MatchedDatas
.Where(d => d.Price != null)
.WhereMatched(parameters.MatchParameters).FirstOrDefault();
var basePrice = (data == null) ? 0M : data.Price.Value;
var currency = (data == null) ? currencyManager.GetDefaultCurrency() : data.GetCurrency();
result.Currency = currency.Type;
result.Parts.Add(new OrderPriceCalcResult.Part("ProductUnitPrice", basePrice));
}
/// <summary>
/// 从订单商品创建参数生成显示信息
/// </summary>
/// <param name="parameters">订单商品创建参数</param>
/// <param name="userId">用户Id，未登录时等于null</param>
/// <returns></returns>
public static OrderProductDisplayInfo ToOrderProductDisplayInfo(
this CreateOrderProductParameters parameters, Guid?userId)
{
var orderManager = Application.Ioc.Resolve <SellerOrderManager>();
var productManager = Application.Ioc.Resolve <ProductManager>();
var productAlbumManager = Application.Ioc.Resolve <ProductAlbumManager>();
var currencyManager = Application.Ioc.Resolve <CurrencyManager>();
var descriptionProviders = Application.Ioc.ResolveMany <IProductMatchParametersDescriptionProvider>();
var unitPrice = orderManager.CalculateOrderProductUnitPrice(userId, parameters);
var info = new OrderProductDisplayInfo();
var product = productManager.GetWithCache(parameters.ProductId);
if (product == null)
{
throw new BadRequestException(new T("The product you are try to purchase does not exist."));
}
info.ProductId = product.Id;
info.OrderProductId = null;
info.Name = new T(product.Name);
info.ImageWebPath = productAlbumManager.GetAlbumImageWebPath(
product.Id, null, ProductAlbumImageType.Thumbnail);
info.MatchedParameters = parameters.MatchParameters;
info.MatchedParametersDescription = string.Join(" ", descriptionProviders
.Select(p => p.GetDescription(product, parameters.MatchParameters))
.Where(d => !string.IsNullOrEmpty(d)));
info.UnitPrice = unitPrice.Parts.Sum();
info.OriginalUnitPrice = info.UnitPrice;
info.Currency = currencyManager.GetCurrency(unitPrice.Currency);
info.UnitPriceString = info.Currency.Format(info.UnitPrice);
info.UnitPriceDescription = unitPrice.Parts.GetDescription();
info.OriginalUnitPriceString = info.UnitPriceString;
info.OriginalUnitPriceDescription = info.UnitPriceDescription;
info.Count = parameters.MatchParameters.GetOrderCount();
info.ShippedCount = 0;
info.SellerId = product.Seller?.Id;
info.Seller = product.Seller?.Username;
info.State = product.State;
info.Type = product.Type;
info.IsRealProduct = product.GetProductType() is IAmRealProduct;
return(info);
}
