public void Calculate(ref OrderInfo order)
{
order.CouponErrorDesc = string.Empty;
if (string.IsNullOrWhiteSpace(order.CouponCode))
{
return;
}
string couponCode = order.CouponCode.ToUpper().Trim();
#region 1、初次筛选该优惠券号码对于前用户是否能用
List <CustomerCouponInfo> customerCouponList = PromotionDA.GetCanUsingCouponCodeList(order.Customer.SysNo, order.Customer.CustomerRank);
CustomerCouponInfo customerCoupon = customerCouponList.Find(f => f.CouponCode.ToUpper().Trim() == couponCode);
if (customerCoupon == null)
{
SetCouponError(ref order, LanguageHelper.GetText("您没有此优惠券号码{0}", order.LanguageCode), couponCode);
return;
}
if (customerCoupon.IsExpired)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券号码{0}已过期", order.LanguageCode), couponCode);
return;
}
if (customerCoupon.CustomerMaxFrequency.HasValue && customerCoupon.UsedCount >= customerCoupon.CustomerMaxFrequency.Value)
{
SetCouponError(ref order, LanguageHelper.GetText("您已达到使用优惠券号码{0}的次数上限", order.LanguageCode), couponCode);
return;
}
int totalUsedCount = 0;
int CodeTotalUsedCount = 0;
//用户参与活动的次数
int CustomerUsedCount = 0;
//if (customerCoupon.CodeType.Trim().ToUpper() == "C")
//{
CodeTotalUsedCount = PromotionDA.GetCouponCodeTotalUsedCount(couponCode);
//}
//else
//{
//这个是活动的已使用次数
totalUsedCount = PromotionDA.GetCouponTotalUsedCount(customerCoupon.CouponSysNo);
CustomerUsedCount = PromotionDA.GetCustomerCouponNumber(customerCoupon.CouponSysNo, order.Customer.SysNo);
//}
if (customerCoupon.WebsiteMaxFrequency.HasValue && CodeTotalUsedCount >= customerCoupon.WebsiteMaxFrequency)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券号码{0}在全网使用次数已用尽，请使用其他优惠券号码。", order.LanguageCode), couponCode);
return;
}
//if (customerCoupon.WebsiteMaxFrequency.HasValue && totalUsedCount >= customerCoupon.WebsiteMaxFrequency)
//{
// SetCouponError(ref order, LanguageHelper.GetText("此优惠券号码{0}的已达到全网使用次数上限", order.LanguageCode), couponCode);
// return;
//}
#endregion
#region 2、获取该优惠券号码对应的优惠券活动所有信息
CouponInfo coupon = PromotionDA.GetComboInfoByCouponCode(order.CouponCode);
var orderItem = order.OrderItemGroupList.FirstOrDefault();
int merchantSysNo = orderItem == null ? 1 : orderItem.MerchantSysNo;
string merchantName = orderItem == null ? "泰隆" : orderItem.MerchantName;
if (coupon.MerchantSysNo != merchantSysNo && coupon.MerchantSysNo != 1)
{
SetCouponError(ref order, LanguageHelper.GetText(string.Format("该优惠券不是{0}优惠券", merchantName), order.LanguageCode));
return;
}
if (coupon.SaleRulesEx.CustomerMaxFrequency.HasValue && CustomerUsedCount >= coupon.SaleRulesEx.CustomerMaxFrequency.Value)
//if (coupon.SaleRulesEx.CustomerMaxFrequency.HasValue && customerCoupon.UsedCount >= coupon.SaleRulesEx.CustomerMaxFrequency.Value)
{
SetCouponError(ref order, LanguageHelper.GetText("您已达到使用此优惠券活动的次数上限", order.LanguageCode));
return;
}
if (coupon.SaleRulesEx.MaxFrequency.HasValue && totalUsedCount >= coupon.SaleRulesEx.MaxFrequency.Value)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券活动已达到全网使用次数上限", order.LanguageCode));
return;
}
if (coupon == null)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券{0}不存在", order.LanguageCode), couponCode);
return;
}
#endregion
#region 3、详细检查该优惠券号码是否可用
if (!string.IsNullOrWhiteSpace(coupon.SaleRulesEx.NeedEmailVerification) && coupon.SaleRulesEx.NeedEmailVerification.ToUpper().Trim() == "Y")
{
if (order.Customer.IsEmailConfirmed != 1)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券要求客户验证了电子邮箱才可使用！", order.LanguageCode));
return;
}
}
if (!string.IsNullOrWhiteSpace(coupon.SaleRulesEx.NeedMobileVerification) && coupon.SaleRulesEx.NeedMobileVerification.ToUpper().Trim() == "Y")
{
if (order.Customer.IsPhoneValided != 1)
{
SetCouponError(ref order, LanguageHelper.GetText("此优惠券要求客户验证了手机才可使用！", order.LanguageCode));
return;
}
}
if (coupon.SaleRulesList.Count > 0 && coupon.SaleRulesList.Exists(f => f.SaleRuleType == CouponSaleRuleType.RelCustomerRank))
{
//-1表示不限制
if (!coupon.SaleRulesList.Exists(f => f.CustomerRank == -1))
{
int customerRank = order.Customer.CustomerRank;
if (!coupon.SaleRulesList.Exists(f => f.CustomerRank == customerRank))
{
SetCouponError(ref order, LanguageHelper.GetText("当前客户不满足此优惠券要求的客户等级！", order.LanguageCode));
return;
}
}
}
if (coupon.SaleRulesList.Count > 0 && coupon.SaleRulesList.Exists(f => f.SaleRuleType == CouponSaleRuleType.RelArea))
{
int areaID = order.Contact.AddressAreaID;
Area area = PromotionDA.GetAreaBySysNo(areaID);
int provinceId = area.ProvinceSysNo.Value;
if (!coupon.SaleRulesList.Exists(f => f.SaleRuleType == CouponSaleRuleType.RelArea && f.AreaSysNo == provinceId))
{
SetCouponError(ref order, LanguageHelper.GetText("当前客户不满足此优惠券要求的客户地区！", order.LanguageCode));
return;
}
}
#endregion
#region 4、计算该优惠券可以抵扣多少，填充到OrderInfo中
if (coupon.DiscountRuleList != null && coupon.DiscountRuleList.Count > 0)
{
//取得满足优惠券条件的商品总金额
decimal canCalculateAmount = GetCanCalculateAmount(ref order, coupon);
if (canCalculateAmount == 0)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券的商品，无法抵扣", order.LanguageCode));
return;
}
canCalculateAmount = canCalculateAmount - Math.Abs(order.TotalDiscountAmount);
if (canCalculateAmount < coupon.SaleRulesEx.OrderAmountLimit)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券要求的商品总金额下限{0}，无法抵扣", order.LanguageCode), coupon.SaleRulesEx.OrderAmountLimit);
return;
}
#region 处理订单 折扣金额模式 和 百分比模式
if (coupon.DiscountRuleList[0].DiscountType == CouponDiscountType.OrderAmountDiscount || coupon.DiscountRuleList[0].DiscountType == CouponDiscountType.OrderAmountPercentage)
{
//获取适合的折扣规则
Coupon_DiscountRules curDiscountRule = GetMatchDiscountRule(coupon, canCalculateAmount);
if (curDiscountRule == null)
{
SetCouponError(ref order, LanguageHelper.GetText("订单总金额未达到优惠券要求的最小购买金额，无法抵扣", order.LanguageCode));
return;
}
decimal discount = 0m;
if (curDiscountRule.DiscountType == CouponDiscountType.OrderAmountDiscount)
{
discount = Math.Abs(Math.Round(curDiscountRule.Value, 2));
}
else
{
discount = Math.Abs(Math.Round(canCalculateAmount * curDiscountRule.Value, 2));
}
if (coupon.SaleRulesEx.OrderMaxDiscount.HasValue && coupon.SaleRulesEx.OrderMaxDiscount.Value > 0m)
{
if (discount > coupon.SaleRulesEx.OrderMaxDiscount.Value)
{
discount = coupon.SaleRulesEx.OrderMaxDiscount.Value;
}
}
order.CouponCodeSysNo = customerCoupon.CouponCodeSysNo;
order.CouponSysNo = customerCoupon.CouponSysNo;
order.CouponName = customerCoupon.CouponName;
order.CouponAmount = discount;
order.CouponErrorDesc = string.Empty;
}
#endregion
#region 处理 一个商品直减模式
if (coupon.DiscountRuleList[0].DiscountType == CouponDiscountType.ProductPriceDiscount)
{
if (coupon.SaleRulesList == null || coupon.SaleRulesList.Count == 0)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券的指定商品，无法抵扣", order.LanguageCode));
return;
}
Coupon_SaleRules productSaleRule = coupon.SaleRulesList.Find(f => f.SaleRuleType == CouponSaleRuleType.RelProduct);
int discountProductSysNo = productSaleRule.ProductSysNo;
int discountProductCount = 0;
decimal productReduce = 0m;
decimal productPrice = 0.00m;
foreach (OrderItemGroup itemGroup in order.OrderItemGroupList)
{
OrderProductItem item = itemGroup.ProductItemList.Find(f => f.ProductSysNo == discountProductSysNo);
if (item != null)
{
discountProductCount += item.UnitQuantity * itemGroup.Quantity;
productPrice = item.UnitSalePrice;
}
}
if (discountProductCount == 0)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券的指定商品，无法抵扣", order.LanguageCode));
return;
}
if (discountProductCount > coupon.DiscountRuleList[0].Quantity)
{
discountProductCount = coupon.DiscountRuleList[0].Quantity;
}
productReduce = coupon.DiscountRuleList[0].Value;
if (coupon.DiscountRuleList[0].Value > productPrice)
{
productReduce = productPrice;
}
decimal discount = Math.Abs(Math.Round(productReduce * discountProductCount, 2));
if (coupon.SaleRulesEx.OrderMaxDiscount.HasValue && coupon.SaleRulesEx.OrderMaxDiscount.Value > 0m)
{
if (discount > coupon.SaleRulesEx.OrderMaxDiscount.Value)
{
discount = coupon.SaleRulesEx.OrderMaxDiscount.Value;
}
}
order.CouponCodeSysNo = customerCoupon.CouponCodeSysNo;
order.CouponSysNo = customerCoupon.CouponSysNo;
order.CouponName = customerCoupon.CouponName;
order.CouponAmount = discount;
order.CouponErrorDesc = string.Empty;
order["Coupon_DiscountProductSysNo"] = discountProductSysNo;
order["Coupon_DiscountProductCount"] = discountProductCount;
}
#endregion
#region 处理 一个商品最终售价模式
if (coupon.DiscountRuleList[0].DiscountType == CouponDiscountType.ProductPriceFinal)
{
if (coupon.SaleRulesList == null || coupon.SaleRulesList.Count == 0)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券的指定商品，无法抵扣", order.LanguageCode));
return;
}
Coupon_SaleRules productSaleRule = coupon.SaleRulesList.Find(f => f.SaleRuleType == CouponSaleRuleType.RelProduct);
int discountProductSysNo = productSaleRule.ProductSysNo;
decimal discountProductPrice = 0.00m;
int discountProductCount = 0;
foreach (OrderItemGroup itemGroup in order.OrderItemGroupList)
{
OrderProductItem item = itemGroup.ProductItemList.Find(f => f.ProductSysNo == discountProductSysNo);
if (item != null)
{
discountProductCount += item.UnitQuantity * itemGroup.Quantity;
discountProductPrice = item.UnitSalePrice;
}
}
if (discountProductCount == 0)
{
SetCouponError(ref order, LanguageHelper.GetText("没有满足该优惠券的指定商品,无法抵扣", order.LanguageCode));
return;
}
if (discountProductCount > coupon.DiscountRuleList[0].Quantity)
{
discountProductCount = coupon.DiscountRuleList[0].Quantity;
}
decimal discount = 0m;
if (discountProductPrice > coupon.DiscountRuleList[0].Value)
{
discount = Math.Abs(Math.Round((discountProductPrice - coupon.DiscountRuleList[0].Value) * discountProductCount, 2));
}
else
{
SetCouponError(ref order, LanguageHelper.GetText("该优惠券的指定商品已经是优惠券设定的最低价格,无法抵扣", order.LanguageCode));
return;
}
if (coupon.SaleRulesEx.OrderMaxDiscount.HasValue && coupon.SaleRulesEx.OrderMaxDiscount.Value > 0m)
{
if (discount > coupon.SaleRulesEx.OrderMaxDiscount.Value)
{
discount = coupon.SaleRulesEx.OrderMaxDiscount.Value;
}
}
order.CouponCodeSysNo = customerCoupon.CouponCodeSysNo;
order.CouponSysNo = customerCoupon.CouponSysNo;
order.CouponName = customerCoupon.CouponName;
order.CouponAmount = discount;
order.CouponErrorDesc = string.Empty;
order["Coupon_DiscountProductSysNo"] = discountProductSysNo;
order["Coupon_DiscountProductCount"] = discountProductCount;
}
#endregion
order["Coupon_DiscountType"] = coupon.DiscountRuleList[0].DiscountType;
}
#endregion
}
