优化切换店铺没有清除代客下单历史订单干的问题

src/store/modules/carts.ts

@@ -146,6 +146,7 @@ export const useCartsStore = defineStore("carts", () => {
     };
 
     console.log('changeUser', vipUser.value);
+    await getConsumeDiscountAjax()
     await getGoods({})
 
     // 选择用户后重新刷新历史订单限时折扣信息
@@ -157,6 +158,24 @@ export const useCartsStore = defineStore("carts", () => {
     payParamsInit()
   }
 
+  // 根据用户id获取新客立减金额，返回null代表不可用
+  async function getConsumeDiscountAjax() {
+    try {
+      if (vipUser.value.id) {
+        const res = await limitTimeDiscountApi.getConsumeDiscount({
+          shopId: localStorage.getItem("shopId"),
+          shopUserId: vipUser.value.id,
+          orderId: oldOrder.value.id,
+        });
+        console.log("根据用户id获取新客立减金额，返回null代表不可用", res);
+        if (res !== null) {
+          newUserDiscount.value = res;
+        }
+      }
+    } catch (error) {
+      console.log(error);
+    }
+  }
 
   // 给长连接发送更新购物车限时折扣信息
   const sendWsTimeDiscount = _.throttle(function () {
@@ -406,8 +425,8 @@ export const useCartsStore = defineStore("carts", () => {
   //使用积分数量
   const userPoints = ref(0);
 
-  // 新客立减金额
-  const newUserDiscount = ref(0)
+  // 新客立减配置
+  const newUserDiscount = ref(null)
 
   // 订单额外配置（现在依赖响应式的 merchantReduction）
   const orderExtraConfig = computed<OrderExtraConfig>(() => ({
@@ -424,7 +443,7 @@ export const useCartsStore = defineStore("carts", () => {
     currentDinnerType: dinnerType.value,
     limitTimeDiscount: limitDiscountRes.value,
     shopUserInfo: vipUser.value,
-    newUserDiscount: newUserDiscount.value
+    newUserDiscount: newUserDiscount.value !== null ? newUserDiscount.value.amount : 0
   }) as OrderExtraConfig);
 
   // 营销活动列表
@@ -1001,6 +1020,7 @@ export const useCartsStore = defineStore("carts", () => {
   // 支付成功后清楚订单/用户信息
   function clearHistory() {
     vipUser.value = {}
+    newUserDiscount.value = {}
   }
 
   return {