增加分销页面，订单增加会员折扣

utils/goods.ts

@@ -268,6 +268,12 @@ export interface TimeLimitDiscountConfig {
   [property: string]: any;
 }
 
+//用户信息
+interface ShopUserInfo {
+  isVip: number | null; //是否会员
+  discount: number | null; //用户折扣
+  isMemberPrice: number | null; //会员折扣与会员价是否同时使用
+}
 /** 订单额外费用配置 */
 export interface OrderExtraConfig {
   // merchantReduction: number;        // 商家减免金额（元，默认0）
@@ -286,6 +292,7 @@ export interface OrderExtraConfig {
   isFreeDine?: boolean; //是否霸王餐
   freeDineConfig?: FreeDineConfig;
   limitTimeDiscount?: TimeLimitDiscountConfig; //限时折扣
+  shopUserInfo: ShopUserInfo; // 用户信息
 }
 
 /** 订单费用汇总（修改：补充商家减免类型和明细） */
@@ -1283,6 +1290,22 @@ export function calcPointDeduction(
   };
 }
 
+function calcVipDiscountAmount(
+  goodsRealAmount: number,
+  shopUserInfo: ShopUserInfo
+): number {
+  if (!shopUserInfo.isVip || shopUserInfo.discount === 0) return 0;
+  if (shopUserInfo.isVip == 1 && shopUserInfo.isMemberPrice != 1) {
+    return 0;
+  }
+  return truncateToTwoDecimals(
+    new BigNumber(goodsRealAmount)
+      .multipliedBy((100 - (shopUserInfo.discount || 0)) / 100)
+      .decimalPlaces(2, BigNumber.ROUND_UP)
+      .toNumber()
+  );
+}
+
 // ============================ 6. 订单总费用汇总与实付金额计算（核心入口，补充细分字段） ============================
 /**
  * 计算订单所有费用子项并汇总（核心入口函数）
@@ -1310,7 +1333,9 @@ export function calculateOrderCostSummary(
     freeDineConfig,
     limitTimeDiscount,
     fullReductionActivities,
+    shopUserInfo,
   } = config;
+  console.log("shopUserInfo", shopUserInfo);
 
   // ------------------------------ 1. 基础费用计算 ------------------------------
   const goodsOriginalAmount = calcGoodsOriginalAmount(goodsList); // 商品原价总和
@@ -1323,13 +1348,19 @@ export function calculateOrderCostSummary(
       limitTimeDiscount: config.limitTimeDiscount,
     }
   );
+
+  // 会员折扣减免
+  const vipDiscountAmount = calcVipDiscountAmount(
+    goodsRealAmount,
+    shopUserInfo
+  ); // 会员折扣减免金额
+
   const goodsDiscountAmount = calcGoodsDiscountAmount(
     goodsOriginalAmount,
     goodsRealAmount
   ); // 商品折扣金额
 
-  //会员折扣
-  let vipDiscountAmount = 0;
+
 
   const newUserDiscount = config.newUserDiscount || 0; // 新客立减
 
@@ -1522,6 +1553,7 @@ export function calculateOrderCostSummary(
   // ------------------------------ 6. 最终实付金额计算 ------------------------------
   const finalPayAmountBn = new BigNumber(goodsRealAmount)
     .minus(newUserDiscount)
+    .minus(vipDiscountAmount)
     .minus(fullReductionAmount)
     .minus(couponDeductionAmount)
     .minus(pointDeductionAmount)
@@ -1549,6 +1581,7 @@ export function calculateOrderCostSummary(
       .plus(couponDeductionAmount)
       .plus(pointDeductionAmount)
       .plus(merchantReductionActualAmount)
+      .plus(vipDiscountAmount)
       .toNumber()
   );
   //积分可抵扣最大金额 最终支付金额+积分抵扣-商家减免