fix(订单服务): 修复关联订单列表去重逻辑并优化查询结果

确保关联订单列表中的条目不会重复，通过使用Set来跟踪已处理的外部ID
移除不必要的orders数组填充，简化返回数据结构

src/service/order.service.ts

@@ -643,6 +643,37 @@ export class OrderService {
         o.payment_method as payment_method,
         cs.order_count as order_count,
         cs.total_spent as total_spent,
+        CASE WHEN EXISTS (
+          SELECT 1 FROM subscription s
+          WHERE s.siteId = o.siteId AND s.parent_id = o.externalOrderId
+        ) THEN 1 ELSE 0 END AS isSubscription,
+        (
+          SELECT COALESCE(
+            JSON_ARRAYAGG(
+              JSON_OBJECT(
+                'id', s.id,
+                'externalSubscriptionId', s.externalSubscriptionId,
+                'status', s.status,
+                'currency', s.currency,
+                'total', s.total,
+                'billing_period', s.billing_period,
+                'billing_interval', s.billing_interval,
+                'customer_id', s.customer_id,
+                'customer_email', s.customer_email,
+                'parent_id', s.parent_id,
+                'start_date', s.start_date,
+                'trial_end', s.trial_end,
+                'next_payment_date', s.next_payment_date,
+                'end_date', s.end_date,
+                'line_items', s.line_items,
+                'meta_data', s.meta_data
+              )
+            ),
+            JSON_ARRAY()
+          )
+          FROM subscription s
+          WHERE s.siteId = o.siteId AND s.parent_id = o.externalOrderId
+        ) AS related,
         COALESCE(
           JSON_ARRAYAGG(
             CASE WHEN s.id IS NOT NULL THEN JSON_OBJECT(
@@ -1299,10 +1330,21 @@ export class OrderService {
     let relatedList: any[] = [];
     try {
       const related = await this.getRelatedByOrder(id);
-      relatedList = [
-        ...(Array.isArray(related?.subscriptions) ? related.subscriptions : []),
-        ...(Array.isArray(related?.orders) ? related.orders : []),
-      ];
+      const subs = Array.isArray(related?.subscriptions) ? related.subscriptions : [];
+      const ords = Array.isArray(related?.orders) ? related.orders : [];
+      const seen = new Set<string>();
+      const merge = [...subs, ...ords];
+      for (const it of merge) {
+        const key = it?.externalSubscriptionId
+          ? `sub:${it.externalSubscriptionId}`
+          : it?.externalOrderId
+          ? `ord:${it.externalOrderId}`
+          : `id:${it?.id}`;
+        if (!seen.has(key)) {
+          seen.add(key);
+          relatedList.push(it);
+        }
+      }
     } catch (error) {
       // 关联查询失败不影响详情返回
     }
@@ -1329,15 +1371,10 @@ export class OrderService {
       WHERE s.siteId = ? AND s.parent_id = ?
     `;
     const subscriptions = await this.orderModel.query(subSql, [siteId, order.externalOrderId]);
-
-
-    const allOrdersMap = new Map<number, any>();
-    subscriptions.forEach(o => allOrdersMap.set(o.id, o));
-
     return {
       order,
       subscriptions,
-      orders: Array.from(allOrdersMap.values()),
+      orders: [],
     };
   }