//获取优惠券
private static string GenerateRandomCode(int length)
{
Thread.Sleep(10);
const string template = "234679ACDEFGHJKLMNPQRTUVWXYZ";
int success = 0;
Random random = new Random();
random.Next();
string CouponCode = string.Empty;
while (success == 0)
{
StringBuilder builder = new StringBuilder();
int maxRandom = template.Length - 1;
for (int i = 0; i < length; i++)
{
builder.Append(template[random.Next(maxRandom)]);
}
CouponCode = builder.ToString();
if (!PromotionDA.CheckExistCode(CouponCode, null))
{
success = 1;
}
}
return(CouponCode);
}
/// <summary>
/// 获取当前用户可参与的优惠券活动（当商家不确定或者为自营商品时获取平台优惠券活动，第三方商家是获取当前用户在该商家可参与的优惠券活动）
/// </summary>
/// Create by John.E.Kang 2015.11.03
/// <param name="UserSysNo">用户编码</param>
/// <param name="MerchantSysNo">商家编码</param>
/// <returns></returns>
public static List <CouponInfo> GetCouponList(int UserSysNo, int MerchantSysNo)
{
int RemainingNumber = 0;
List <CouponInfo> couponList_pre = new List <CouponInfo>();
List <CouponInfo> couponList = new List <CouponInfo>();
try
{
couponList_pre = PromotionDA.GetCouponList(UserSysNo, MerchantSysNo);
foreach (var item in couponList_pre)
{
CouponInfo couponinfo = PromotionDA.GetCouponInfo(item.SysNo);
if (couponinfo != null)
{
item.SaleRulesList = couponinfo.SaleRulesList;
item.AssignCustomerList = couponinfo.AssignCustomerList;
item.DiscountRuleList = couponinfo.DiscountRuleList;
item.SaleRulesEx = couponinfo.SaleRulesEx;
//当为百分比折扣是显示前台显示折扣价
if (couponinfo.DiscountRuleList[0].DiscountType == CouponDiscountType.OrderAmountPercentage)
{
item.DiscountRuleList[0].Value = 1 - couponinfo.DiscountRuleList[0].Value;
}
}
//活动已参与次数
int UsedTotalNumber = PromotionDA.GetCodeNumberByCouponNumber(item.SysNo);
//校验用户是否可领取优惠券
bool receivable = false;
if (couponinfo.SaleRulesEx.CustomerMaxFrequency.HasValue)
{
receivable = PromotionDA.CheckUserAreadyGetCode(UserSysNo, item.SysNo, (int)couponinfo.SaleRulesEx.CustomerMaxFrequency, out RemainingNumber);
}
if (!receivable && !(item.SaleRulesEx.MaxFrequency.HasValue &&
UsedTotalNumber >= item.SaleRulesEx.MaxFrequency))
{
couponList.Add(item);
}
}
return(couponList);
}
catch
{
couponList = null;
return(couponList);
}
}
/// <summary>
/// 构建购物车商品分组
/// </summary>
/// <param name="category"></param>
/// <param name="sysNo"></param>
/// <param name="qty"></param>
/// <returns></returns>
public static ShoppingItemGroup BuildShoppingItemGroup(string category, int sysNo, int qty)
{
ShoppingItemGroup result = new ShoppingItemGroup();
if (category.ToLower().Equals("product"))
{
result.ShoppingItemList = new List <ShoppingItem>()
{
new ShoppingItem()
{
ProductSysNo = sysNo,
UnitQuantity = 1,
ProductChecked = true
}
};
result.PackageType = 0;
result.PackageNo = 0;
result.Quantity = qty;
result.PackageChecked = true;
}
else if (category.ToLower().Equals("package"))
{
result.ShoppingItemList = new List <ShoppingItem>();
//根据套餐编号加载套餐内的商品和数量
ComboInfo comb = PromotionDA.GetComboByComboSysNo(sysNo);
result.ShoppingItemList = new List <ShoppingItem>();
if (comb != null && comb.Items != null && comb.Items.Count > 0)
{
foreach (var combItem in comb.Items)
{
result.ShoppingItemList.Add(new ShoppingItem()
{
ProductSysNo = combItem.ProductSysNo,
UnitQuantity = combItem.Quantity
});
}
}
result.PackageChecked = true;
result.PackageType = 1;
result.PackageNo = sysNo;
result.Quantity = qty;
}
return(result);
}
/// <summary>
/// 获取指定商品的所有促销信息
/// </summary>
/// <param name="productSysNo"></param>
/// <returns></returns>
public static ProductPromotionInfo GetProductPromotionInfo(int productSysNo)
{
if (productSysNo <= 0)
{
return(null);
}
string cacheKey = "GetProductPromotionInfo_" + productSysNo;
if (HttpRuntime.Cache[cacheKey] != null)
{
return((ProductPromotionInfo)HttpRuntime.Cache[cacheKey]);
}
ProductPromotionInfo promotion = new ProductPromotionInfo();
promotion.ProductSysNo = productSysNo;
//套餐
promotion.ComboList = PromotionDA.GetComboListByMasterProductSysNo(productSysNo);
//团购
promotion.GroupBuySysNo = PromotionDA.ProductIsGroupBuying(productSysNo);
//限时和秒杀
CountdownInfo countdown = PromotionDA.GetProductCountdownByProductSysNo(productSysNo);
if (countdown != null)
{
promotion.Countdown = countdown;
promotion.CountdownSysNo = countdown.SysNo.Value;
promotion.IsSecKill = countdown.IsSecondKill.HasValue ? countdown.IsSecondKill.Value : false;
}
else
{
promotion.CountdownSysNo = 0;
promotion.IsSecKill = false;
}
//赠品
promotion.SaleGiftList = PromotionDA.GetSaleGiftListByProductSysNo(productSysNo);
HttpRuntime.Cache.Insert(cacheKey, promotion, null, DateTime.Now.AddSeconds(CacheTime.Short), Cache.NoSlidingExpiration);
return(promotion);
}
public static string UserGetCouponCode(int UserSysNo, int CouponSysNo, out string couponCodestr)
{
couponCodestr = "";
int RemainingNumber = 0;
CouponInfo coupon = new CouponInfo();
coupon = PromotionDA.GetCouponInfo(CouponSysNo);
if (coupon == null)
{
return("优惠券活动异常，请联系客服！");
}
CouponCode couponCode = new CouponCode();
CouponCodeCustomerLog couponCodeCustomLog = new CouponCodeCustomerLog();
try
{
//校验用户是否已领取优惠券
int CouponNumber = PromotionDA.GetCodeNumberByCouponNumber(coupon.SysNo);
if (coupon.SaleRulesEx.MaxFrequency.HasValue && CouponNumber >= coupon.SaleRulesEx.MaxFrequency)
{
return("活动优惠券已被领完，谢谢参与！");
}
if (coupon.SaleRulesEx.CustomerMaxFrequency.HasValue && PromotionDA.CheckUserAreadyGetCode(UserSysNo, CouponSysNo, (int)coupon.SaleRulesEx.CustomerMaxFrequency, out RemainingNumber))
{
return("您领取次数已完，谢谢参与！");
}
string GenerateCode = GenerateRandomCode(10);
couponCode.Code = GenerateCode;
//领取优惠券为通用优惠券
couponCode.CodeType = "C";
couponCode.CouponSysNo = coupon.SysNo;
couponCode.CustomerMaxFrequency = 1;
couponCode.EndDate = coupon.EndDate;
couponCode.TotalCount = 1;
couponCode.BeginDate = coupon.BeginDate;
int couponCodeSysNo = PromotionDA.InsertCouponCode(UserSysNo, couponCode);
if (couponCodeSysNo <= 0)
{
return("无法领取优惠券，请联系客服！");
}
couponCodeCustomLog.CouponCode = GenerateCode;
couponCodeCustomLog.CouponSysNo = coupon.SysNo;
couponCodeCustomLog.CustomerSysNo = UserSysNo;
couponCodeCustomLog.UserCodeType = "L";
if (PromotionDA.InsertCustomerLog(couponCodeCustomLog))
{
couponCodestr = GenerateCode;
return("您已成功领取优惠券，号码：" + GenerateCode);
//if (RemainingNumber>0)
//{
// RemainingNumber--;
// return "您已成功领取优惠券，号码：" + GenerateCode + "。\n你还有" + RemainingNumber+"次领取机会！";
//}
//else
//{
// return "您已成功领取优惠券，号码：" + GenerateCode;
//}
}
else
{
return("无法领取优惠券，请联系客服！");
}
}
catch
{
return("领取优惠券异常，请联系客服！");
}
}
