feat:bug修改

lib/common/utils/discounts/discounts_tool.dart

@@ -39,6 +39,9 @@ class DiscountsTool {
     required List<ShopCardEntity> shopCardList,
     required String hourType,
   }) async {
+    if (ObjectUtil.isEmpty(shopCardList)) {
+      return 0;
+    }
     var discountsItems = await updateUserDiscountsList(userId: userId);
     discountsItems = discountsItems
         ?.where((element) => element.hourType?.code == hourType)
@@ -51,23 +54,10 @@ class DiscountsTool {
       final extraPer = item.extraPer;
       final specialDishEnable = item.specialDishEnable;
       if (extraPer == null || extraPer <= 1.0) continue;
-      // 计算总价
-      int totalPrice = 0;
-      // 特色菜不额外收费
-      if (!specialDishEnable) {
-        totalPrice = shopCardList
-            .where((item) => item.isPriceIncreased)
-            .map((item) => item.totalPrice)
-            .reduce((value, element) => value + element);
-        extraPrice += item.computedDiscountsExtraPrice(totalPrice);
-      }
-      // 特色菜额外收费
-      if (specialDishEnable) {
-        totalPrice = shopCardList
-            .map((item) => item.totalPrice)
-            .reduce((value, element) => value + element);
-        extraPrice += item.computedDiscountsExtraPrice(totalPrice);
-      }
+      final iterable = specialDishEnable
+          ? shopCardList
+          : shopCardList.where((e) => e.isPriceIncreased);
+      final totalPrice = iterable.fold<int>(0, (sum, e) => sum + e.totalPrice);
       extraPrice += item.computedDiscountsExtraPrice(totalPrice);
     }
     return extraPrice;