/// <summary>
/// 计算 车品 使用单张优惠券的价格
/// </summary>
/// <param name="price"></param>
/// <param name="coupons"></param>
/// <returns></returns>
private decimal CalulateUseCouponPrice(CarProductPriceModel _CarProductPriceModel, GetCouponRules coupons)
{
//车品的售价
decimal sellPrice = _CarProductPriceModel.FlashSalePrice == 0 ? _CarProductPriceModel.OriginalPrice : _CarProductPriceModel.FlashSalePrice;
if (_CarProductPriceModel.IsFullNetUsePCode)
{
sellPrice = _CarProductPriceModel.FullNetActivityPrice;
}
// 优惠券 的 使用 最低价
decimal couponsMinmoney = (decimal)Convert.ToDouble(coupons.Minmoney);
if (sellPrice <= couponsMinmoney && sellPrice > 0)//车品售价 小于或等于 优惠券使用额度
{
//使用优惠券 购买的最小 次数
int num = (int)Math.Ceiling(couponsMinmoney / sellPrice);
//优惠券 使用后的价格
coupons.UsedCouponPrice = (num * sellPrice - (decimal)Convert.ToDouble(coupons.Discount)) / num;
}
else//车品售价 大于 优惠券使用额度
{
coupons.UsedCouponPrice = sellPrice - (decimal)Convert.ToDouble(coupons.Discount);
}
return(coupons.UsedCouponPrice);
}
/// <summary>
/// 计算 车品 使用 优惠券 使用所有的优惠券的 价格
/// </summary>
/// <param name="_CarProductPriceModel"></param>
/// <param name="coupons"></param>
/// <returns></returns>
private async Task <List <GetCouponRules> > GetCarProductUsedCouponPriceList(CarProductPriceModel _CarProductPriceModel, List <GetCouponRules> coupons)
{
List <GetCouponRules> models = new List <GetCouponRules>();
//获取所有 可用的优惠券 【此处获取的 是大券 的 pkid】
List <PromotionCouponRulesModel> usefulCoupons = await SelectProductPromotionGetRuleByOidsAsyn(_CarProductPriceModel);
List <WebCouponActivityRuleModel> coupon = ActivityManager.SelectCouponRuleByCouponRulesPKID(usefulCoupons.Select(p => p.Pkid).ToList());
List <Guid> usefulCoupons_Pkid = coupon.Select(p => p.GetRuleGUID).Distinct().ToList();
foreach (var c in coupons)
{
//此处 model 需要重新赋值 不然 会产生覆盖的的问题
GetCouponRules model = new GetCouponRules()
{
UsedCouponPrice = c.UsedCouponPrice, UsedCouponProfit = c.UsedCouponProfit, GetRuleGUID = c.GetRuleGUID, Description = c.Description, Minmoney = c.Minmoney, Discount = c.Discount, CouponDuration = c.CouponDuration, CouponStartTime = c.CouponStartTime
};
//需要 验证优惠券 对商品是否可用
Guid g = Guid.Empty;
if (!Guid.TryParse(c.GetRuleGUID, out g))
{
continue;
}
model.IsUseful = usefulCoupons_Pkid.Contains(g); //CheckCoupon(_CarProductPriceModel, c);
if (model.IsUseful)
{
model.UsedCouponPrice = CalulateUseCouponPrice(_CarProductPriceModel, c);
//券后毛利 = 券后价格 - 采购价格（代发商品，读取代发价格；非代发商品，读取采购价格）
model.UsedCouponProfit = model.UsedCouponPrice - (_CarProductPriceModel.IsDaifa ? _CarProductPriceModel.ContractPrice : _CarProductPriceModel.PurchasePrice);
//全网活动可用券
if (_CarProductPriceModel.IsFullNetUsePCode)
{
//全网活动券后价
var usedCouponPrice = CalulateUseCouponPrice(_CarProductPriceModel, c);
model.UsedCouponPrice = usedCouponPrice < model.UsedCouponPrice
? usedCouponPrice
: model.UsedCouponPrice;
model.UsedCouponProfit = model.UsedCouponPrice - (_CarProductPriceModel.IsDaifa ? _CarProductPriceModel.ContractPrice : _CarProductPriceModel.PurchasePrice);
}
}
models.Add(model);
}
return(models.OrderBy(p => p.UsedCouponPrice).ToList());
}
/// <summary>
///计算 车品使用 优惠券的详情
/// </summary>
/// <param name="couponRulePKID"></param>
/// <returns></returns>
public async Task <JsonResult> CalulateCarProductUsedCouponPriceList(string carProductPKID, string couponsString)
{
try
{
List <GetCouponRules> coupons = JsonConvert.DeserializeObject <List <GetCouponRules> >(couponsString);
CarProductPriceModel _CarProductPriceModel = await CarProductPriceManager.GetShopProductsByPidsAsync(carProductPKID);
List <GetCouponRules> rules = await GetCarProductUsedCouponPriceList(_CarProductPriceModel, coupons);
return(Json(new { Result = 1, Data = rules }, JsonRequestBehavior.AllowGet));
}
catch (Exception ex)
{
return(Json(new { Result = 0, Message = ex.Message }, JsonRequestBehavior.AllowGet));
}
}
/// <summary>
/// 根据车品的oid 获取 所有可用的优惠券
/// </summary>
/// <param name="price"></param>
/// <returns></returns>
private async Task <List <PromotionCouponRulesModel> > SelectProductPromotionGetRuleByOidsAsyn(CarProductPriceModel _CarProductPriceModel)
{
List <PromotionCouponRulesModel> models = new List <PromotionCouponRulesModel>();
using (PromotionClient client = new PromotionClient())
{
OperationResult <IEnumerable <PromotionCouponRulesModel> > res = await client.SelectPromotionCouponRulesByProducrIDAsync(new string[] { _CarProductPriceModel.PID }, null);
if (res.Success)
{
models = res.Result.ToList();
}
return(models);
}
}
