/// <summary>
/// 累计运费模型
/// </summary>
/// <param name="totalSum">现有计费</param>
/// <param name="feeModel">新增计费</param>
/// <param name="sumMethod">计算规则</param>
/// <returns></returns>
public bool AddTotal(DeliveryFeeSum feeModel)
{
//寻找的相同运费模板设置
int infoIndex = _totalSum.FindIndex(info => info.Base == feeModel.Base &&
info.BaseCost == feeModel.BaseCost &&
info.Extra == feeModel.Extra &&
info.ExtraCost == feeModel.ExtraCost &&
info.UnitType == feeModel.UnitType);
bool isHasSame = infoIndex > -1;
if (isHasSame)
{
//合并购买单位，不重复计算
_totalSum[infoIndex].BuyUnit += feeModel.BuyUnit;
return(true);
}
//有赞运费计费规则：累计不同模板运费
if (_SumFeeMethod == DeliveryFeeSumMethond.赞)
{
//累计运费
_totalSum.Add(feeModel);
return(true);
}
//淘宝运费计费规则：只算一个最高的首运费
if (_SumFeeMethod == DeliveryFeeSumMethond.淘宝)
{
//log4net.LogHelper.WriteInfo(this.GetType(), $"714{JsonConvert.SerializeObject(feeModel)}");
//log4net.LogHelper.WriteInfo(this.GetType(), $"715{JsonConvert.SerializeObject(_totalSum)}");
//累计运费
if (_totalSum.Count == 0)
{
_totalSum.Add(feeModel);
return(true);
}
//获取最高的首运费
DeliveryFeeSum highestBaseCost = _totalSum.OrderByDescending(total => total.BaseCost).First();
//log4net.LogHelper.WriteInfo(this.GetType(), $"720：{JsonConvert.SerializeObject(highestBaseCost)}");
if (highestBaseCost.BaseCost >= feeModel.BaseCost)
{
//低于最高首运费，每件以续费价格计算
feeModel.BaseCost = feeModel.ExtraCost;
feeModel.Base = 0;
}
else
{
//高于最高首运费，覆盖当前最高首运费
_totalSum.ForEach(total => total.BaseCost = total.ExtraCost);
}
_totalSum.Add(feeModel);
}
return(false);
}
/// <summary>
/// 获取商品运费（通用业务）
/// </summary>
/// <param name="productInfo">产品信息</param>
/// <param name="provinces">配送省份</param>
/// <param name="city">配送市区</param>
/// <param name="sumMethod">运费结算规则</param>
/// <returns></returns>
public DeliveryFeeResult GetDeliveryFeeCommon(List <DeliveryProduct> productInfo, string provinces, string city, DeliveryFeeSumMethond sumMethod)
{
DeliveryFeeResult result = new DeliveryFeeResult();
if (string.IsNullOrWhiteSpace(provinces) || string.IsNullOrWhiteSpace(city))
{
result.Message = "无效配送地址";
return(result);
}
//获取商品
if (productInfo == null || productInfo.Count == 0)
{
result.Message = "无效产品信息";
return(result);
}
//获取运费模板ID
string templateIds = string.Join(",", productInfo.Select(product => product.TemplateId).Where(templateId => templateId > 0));
if (string.IsNullOrWhiteSpace(templateIds))
{
//没有选择运费模板，默认零元
result.InRange = true;
result.Message = "没有产品使用运费模板，返回零元";
return(result);
}
List <DeliveryTemplate> productTemplates = GetTemplateByIds(templateIds);
if (productTemplates == null || productTemplates.Count == 0)
{
//没运费模板数据，已删除，默认零元
result.InRange = true;
result.Message = "查无运费模板，或许已删除，默认返回零元";
return(result);
}
DeliveryFeeSumBLL sumFeeMethod = new DeliveryFeeSumBLL(sumMethod);
foreach (DeliveryTemplate template in productTemplates)
{
List <DeliveryProduct> products = productInfo.FindAll(item => item.TemplateId == template.Id);
if (template.IsFree == 1)
{
//全国包邮
result.Fee = 0;
result.InRange = true;
result.Message += $"[{template.Name}]模板，设置为全国包邮，[{string.Join(",",products.Select(item => item.Name))}]商品运费为零；";
continue;
}
DeliveryTemplate region = MatchDeliveryRegion(template, provinces, city);
if (region == null)
{
//检查超出配送区域
result.ErrorId = products.First().Id;
result.Message = $"[{products.First().Name}]不在配送区域内";
return(result);
}
if (region.IsFree == 1)
{
//部分区域设置包邮
result.Fee = 0;
result.InRange = true;
result.Message += $"[{string.Join(",", products.Select(item => item.Name))}]配送到[{provinces}][{city}]为包邮地区；";
continue;
}
//购买单位
int unit = 0;
int padUnit = 0;
string unitName = string.Empty;
switch (template.UnitType)
{
case (int)DeliveryUnit.件数:
unitName = "件";
unit = products.Sum(item => item.Count);
break;
case (int)DeliveryUnit.重量:
unitName = "g";
//购买重量 = 数量 x 单件重量
unit = products.Sum(item => item.Count * item.Weight);
//补余，如：购买300g，不足1kg，追加700kg
int extraUnit = unit - region.Base;
if (extraUnit > 0 && region.Extra > 0 && region.ExtraCost > 0)
{
padUnit = (int)Math.Ceiling((double)extraUnit / region.Extra) * region.Extra - extraUnit;
}
break;
default:
continue;
}
//新建运费
DeliveryFeeSum sum = new DeliveryFeeSum
{
Base = region.Base,
BaseCost = region.BaseCost,
Extra = region.Extra,
ExtraCost = region.ExtraCost,
BuyUnit = unit,
PadUnit = padUnit,
UnitType = template.UnitType
};
//叠加运费
sumFeeMethod.AddTotal(sum);
result.Message += string.Join(";", products.Select(item =>
{
int buyUnit = template.UnitType == (int)DeliveryUnit.件数 ? item.Count : item.Count * item.Weight;
return(string.Join("", new string[]
{
$"[{item.Name}]（购买{buyUnit}{unitName}）:",
$"{sum.Base}{unitName} 内 {sum.BaseCost * 0.01}元，",
$"运费增加{sum.ExtraCost * 0.01}元；",
}));
}));
}
int totalFee = 0;
result.InRange = true;
try
{
totalFee = sumFeeMethod.GetTotal();
}
catch (Exception ex)
{
result.Message = ex.Message;
result.InRange = false;
}
result.Fee = totalFee;
return(result);
}
