/// <summary>
/// 获取促销结果
/// </summary>
/// <param name="origComboList"></param>
/// <param name="soInfo"></param>
/// <param name="soItemList"></param>
/// <param name="promotionInfoList"></param>
protected virtual void GetPromotionListForSO(List <ComboInfo> origComboList, SOInfo soInfo, ref List <SOItemInfo> soItemList, ref List <SOPromotionInfo> promotionInfoList)
{
//1.取当前订单商品有效的Combo
List <ComboInfo> validComboList = GetValidComboList(origComboList, soItemList);
if (validComboList.Count == 0)
{
return;
}
//2.按照这些可以参与活动的Combo列表，得到所有的折扣列表: 遵循最大Combo折扣优先原则，而不是客户最大折扣优先原则
List <ComboApplyInstance> comboApplyList = new List <ComboApplyInstance>();
foreach (ComboInfo combo in validComboList)
{
ComboApplyInstance comboApply = new ComboApplyInstance();
ComboInfo comboClone = SerializationUtility.DeepClone <ComboInfo>(combo);
comboApply.ComboSysNo = comboClone.SysNo.Value;
//获取当前Combo在订单中最多可以存在多少套: 取订单中满足该Combo商品中最小数量
int maxCount = int.MaxValue;
foreach (ComboItem comboItem in comboClone.Items)
{
SOItemInfo soItem = soItemList.Find(f => f.ProductSysNo == comboItem.ProductSysNo);
int curCount = soItem.Quantity.Value / comboItem.Quantity.Value;
if (curCount < maxCount)
{
maxCount = curCount;
}
}
comboApply.Qty = maxCount;
decimal totalDiscount = 0.00m;
foreach (ComboItem comboItem in comboClone.Items)
{
totalDiscount += Math.Round(comboItem.Discount.Value * comboItem.Quantity.Value * maxCount, 2);
}
//取Combo Total Discount的绝对值
comboApply.TotalDiscount = Math.Abs(totalDiscount);
comboApplyList.Add(comboApply);
}
//3.得到折扣从大到小排序的列表
var comboApplySortList = from p in comboApplyList
orderby p.TotalDiscount descending
select p;
//4.取最大折扣的Combo
ComboApplyInstance maxDiscountComboApply = comboApplySortList.First();
ComboInfo curCombo = validComboList.Find(f => f.SysNo.Value == maxDiscountComboApply.ComboSysNo);
SOPromotionInfo promotionInfo = GetPromotionInfoForCurrentCombo(curCombo, maxDiscountComboApply, ref soItemList,
promotionInfoList.Count + 1, soInfo.SysNo);
if (promotionInfo != null)
{
promotionInfoList.Add(promotionInfo);
}
//5.轮询调用剩下的订单商品
GetPromotionListForSO(validComboList, soInfo, ref soItemList, ref promotionInfoList);
}
/// <summary>
/// 根据当前Combo，得到该Combo在订单中的SOPromotionInfo
/// </summary>
/// <param name="curCombo"></param>
/// <param name="comboApply"></param>
/// <param name="soItemList"></param>
/// <param name="priority"></param>
/// <param name="soSysNo"></param>
/// <returns></returns>
protected virtual SOPromotionInfo GetPromotionInfoForCurrentCombo(ComboInfo curCombo,
ComboApplyInstance comboApply, ref List <SOItemInfo> soItemList, int priority, int?soSysNo)
{
SOPromotionInfo promotionInfo = null;
int maxCount = comboApply.Qty;
if (maxCount > 0)
{
//说明当前订单剩余商品还可以满足这个Combo
promotionInfo = new SOPromotionInfo();
promotionInfo.PromotionType = SOPromotionType.Combo;
promotionInfo.Combo = curCombo;
promotionInfo.PromotionSysNo = curCombo.SysNo.Value;
promotionInfo.PromotionName = curCombo.Name != null ? curCombo.Name.Content : null;
promotionInfo.DiscountAmount = -Math.Abs(comboApply.TotalDiscount);
promotionInfo.GainPoint = 0;
promotionInfo.Priority = priority;
promotionInfo.SOSysNo = soSysNo;
promotionInfo.Time = maxCount;
if (promotionInfo.Time > 0)
{
promotionInfo.Discount = promotionInfo.DiscountAmount / promotionInfo.Time;
}
StringBuilder promotionNote = new StringBuilder();
promotionInfo.SOPromotionDetails = new List <SOPromotionDetailInfo>();
foreach (ComboItem comboItem in curCombo.Items)
{
SOPromotionDetailInfo promotionDetail = new SOPromotionDetailInfo();
promotionDetail.DiscountAmount = Math.Abs(Math.Round(comboItem.Discount.Value * comboItem.Quantity.Value * maxCount, 2));
promotionDetail.GainPoint = 0;
promotionDetail.MasterProductQuantity = comboItem.Quantity.Value * maxCount;
promotionDetail.MasterProductSysNo = comboItem.ProductSysNo.Value;
//promotionDetail.MasterProductType = SOProductType.Product;
promotionInfo.SOPromotionDetails.Add(promotionDetail);
promotionNote.AppendFormat("{0},{1},-{2};", promotionDetail.MasterProductQuantity, promotionDetail.MasterProductSysNo, promotionDetail.DiscountAmount);
//最重要的一点：要从soItemList中减掉这些已经做了折扣的商品及数量
//如果数量没减完，则在soItemList中保留该Item，但是数量要减掉；如果数量减完，则从soItemList中Remove掉改Item
List <SOItemInfo> needRemoveSOItemList = new List <SOItemInfo>();
foreach (SOItemInfo soItem in soItemList)
{
if (soItem.ProductSysNo == comboItem.ProductSysNo)
{
soItem.OriginalPrice = soItem.OriginalPrice + comboItem.Discount; //有折扣总价减去折扣 Bug:89610
if (soItem.Quantity > comboItem.Quantity.Value * maxCount)
{
soItem.Quantity = soItem.Quantity - comboItem.Quantity.Value * maxCount;
}
else
{
needRemoveSOItemList.Add(soItem);
}
}
}
foreach (SOItemInfo soItem in needRemoveSOItemList)
{
soItemList.Remove(soItem);
}
}
promotionInfo.Note = promotionNote.ToString();
}
return(promotionInfo);
}
