fix: 平台微信退款改用俱乐部收款配置（付呗/直连分路，不动支付宝）

Co-authored-by: Cursor <cursoragent@cursor.com>

orders/views/admin.py

@@ -1197,7 +1197,7 @@ class AdTongYiTuiKuanPingTai(APIView):
                 transaction_id = getattr(dingdan_obj, 'WechatTransactionID', None)
                 weixin_refund_result = self.call_weixin_refund(
                     out_trade_no=dingdan_id,
-                    Amount=jine,
+                    jine=jine,
                     transaction_id=transaction_id
                 )
 
@@ -1283,88 +1283,35 @@ class AdTongYiTuiKuanPingTai(APIView):
 
     def call_weixin_refund(self, out_trade_no, jine, transaction_id=None):
         """
-        调用微信退款接口
-        :param out_trade_no: 商户订单号
-        :param jine: 退款金额
-        :param transaction_id: 微信支付订单号（优先使用）
-        :return: {'success': True/False, 'msg': '消息', 'refund_id': '退款单号'}
+        平台订单退款：付呗单走付呗；微信直连单按订单 Club 收款配置 V2 退款。
+        不处理支付宝；不用全局 WEIXIN_*、不用提现 V3。
+        :return: {'success': True/False, 'msg': '...', 'refund_id': '...'}
         """
-        try:
-            from jituan.services.pay_refund_router import try_fubei_refund
-            from jituan.services.wechat_pay import club_id_from_order
-            fb = try_fubei_refund(
-                out_trade_no=out_trade_no,
-                amount_yuan=jine,
-                club_id=club_id_from_order(out_trade_no),
-            )
-            if fb is not None:
-                if fb.get('code') == 0:
-                    return {'success': True, 'msg': fb.get('msg') or 'success', 'refund_id': fb.get('refund_id')}
-                return {'success': False, 'msg': fb.get('msg') or '付呗退款失败'}
+        from jituan.services.pay_refund_router import try_fubei_refund
+        from jituan.services.wechat_pay import club_id_from_order
+        from jituan.services.wechat_v2_refund import refund_wechat_v2_by_club
 
-            # 检查配置
-            required_settings = ['WEIXIN_APPID', 'WEIXIN_MCHID', 'WEIXIN_SHANGHUMIYAO', 'WEIXIN_CERT_PATH', 'WEIXIN_KEY_PATH']
-            for setting in required_settings:
-                if not hasattr(settings, setting) or not getattr(settings, setting):
-                    return {'success': False, 'msg': f'缺少微信支付配置: {setting}'}
+        club_id = club_id_from_order(out_trade_no)
+        fb = try_fubei_refund(
+            out_trade_no=out_trade_no,
+            amount_yuan=jine,
+            club_id=club_id,
+        )
+        if fb is not None:
+            if fb.get('code') == 0:
+                return {'success': True, 'msg': fb.get('msg') or 'success', 'refund_id': fb.get('refund_id')}
+            return {'success': False, 'msg': fb.get('msg') or '付呗退款失败'}
 
-            # 生成退款单号
-            refund_id = f"TK{int(time.time())}{random.randint(1000, 9999)}"
-            total_fee_in_fen = yuan_to_fen(jine)
-
-            # 构造请求参数
-            refund_data = {
-                'appid': settings.WEIXIN_APPID,
-                'mch_id': settings.WEIXIN_MCHID,
-                'nonce_str': hashlib.md5(str(time.time()).encode()).hexdigest(),
-                'out_refund_no': refund_id,
-                'total_fee': total_fee_in_fen,
-                'refund_fee': total_fee_in_fen,
-                'op_user_id': settings.WEIXIN_MCHID,
-                'refund_account': 'REFUND_SOURCE_UNSETTLED_FUNDS'
-            }
-            # 优先使用 transaction_id，否则用 out_trade_no
-            if transaction_id:
-                refund_data['transaction_id'] = transaction_id
-            else:
-                refund_data['out_trade_no'] = out_trade_no
-
-            # 生成签名
-            sorted_params = sorted(refund_data.items())
-            sign_string = '&'.join([f"{k}={v}" for k, v in sorted_params if v])
-            sign_string += f"&key={settings.WEIXIN_SHANGHUMIYAO}"
-            sign = hashlib.md5(sign_string.encode()).hexdigest().upper()
-            refund_data['sign'] = sign
-
-            xml_data = self.dict_to_xml(refund_data)
-            url = "https://api.mch.weixin.qq.com/secapi/pay/refund"
-            response = requests.post(
-                url,
-                data=xml_data.encode('utf-8'),
-                headers={'Content-Type': 'application/xml'},
-                cert=(settings.WEIXIN_CERT_PATH, settings.WEIXIN_KEY_PATH),
-                timeout=30
-            )
-
-            if response.status_code == 200:
-                result = self.xml_to_dict(response.content)
-                if result.get('return_code') == 'SUCCESS' and result.get('result_code') == 'SUCCESS':
-                    logger.info(f"微信退款成功，订单：{out_trade_no}，退款单号：{refund_id}")
-                    return {'success': True, 'msg': '退款申请提交成功', 'refund_id': refund_id}
-                else:
-                    error_msg = result.get('err_code_des', result.get('return_msg', '退款申请失败'))
-                    logger.error(f"微信退款失败，订单：{out_trade_no}，错误：{error_msg}")
-                    return {'success': False, 'msg': f'微信退款失败: {error_msg}'}
-            else:
-                logger.error(f"微信退款接口调用失败，状态码：{response.status_code}")
-                return {'success': False, 'msg': '微信退款接口调用失败'}
-
-        except requests.exceptions.Timeout:
-            logger.error(f"微信退款接口请求超时，订单：{out_trade_no}")
-            return {'success': False, 'msg': '微信退款接口请求超时'}
-        except Exception as e:
-            logger.error(f"调用微信退款接口异常: {str(e)}")
-            return {'success': False, 'msg': f'退款处理异常: {str(e)}'}
+        result = refund_wechat_v2_by_club(
+            out_trade_no=out_trade_no,
+            amount_yuan=jine,
+            club_id=club_id,
+            transaction_id=transaction_id,
+            reason='平台退款',
+        )
+        if result.get('code') == 0:
+            return {'success': True, 'msg': result.get('msg') or 'success', 'refund_id': result.get('refund_id')}
+        return {'success': False, 'msg': result.get('msg') or '微信退款失败'}
 
     def dict_to_xml(self, dict_data):
         xml = ["<xml>"]