fix refurn

app/main/api/internal/logic/pay/wechatpayrefundcallbacklogic.go

@@ -189,19 +189,39 @@ func (l *WechatPayRefundCallbackLogic) WechatPayRefundCallback(w http.ResponseWr
 		l.sendSuccessResponse(w)
 		return nil
 	}
-	if notification.Status == nil {
-		logx.Errorf("【退款回调】Status字段为空")
+
+	orderNo := *notification.OutTradeNo
+	logx.Infof("【退款回调】提取到订单号: %s", orderNo)
+
+	// 3. 判断退款状态，优先使用Status，如果Status为nil则使用SuccessTime判断
+	var status refunddomestic.Status
+	var statusDetermined bool = false
+
+	if notification.Status != nil {
+		status = *notification.Status
+		statusDetermined = true
+		logx.Infof("【退款回调】从Status字段获取状态: %v", status)
+	} else if notification.SuccessTime != nil && !notification.SuccessTime.IsZero() {
+		// 如果Status为空但SuccessTime有值，说明退款成功
+		status = refunddomestic.STATUS_SUCCESS
+		statusDetermined = true
+		logx.Infof("【退款回调】Status为空，但SuccessTime有值(%v)，判断为退款成功", notification.SuccessTime)
+	} else {
+		logx.Errorf("【退款回调】Status和SuccessTime都为空，无法确定退款状态")
 		l.sendSuccessResponse(w)
 		return nil
 	}
 
-	orderNo := *notification.OutTradeNo
-	status := *notification.Status
-	logx.Infof("【退款回调】提取到订单号: %s, 状态: %v", orderNo, status)
+	if !statusDetermined {
+		logx.Errorf("【退款回调】无法确定退款状态")
+		l.sendSuccessResponse(w)
+		return nil
+	}
 
+	logx.Infof("【退款回调】最终确定状态: %v", status)
 	var processErr error
 
-	// 3. 根据订单号前缀处理不同类型的订单
+	// 4. 根据订单号前缀处理不同类型的订单
 	logx.Infof("【退款回调】开始根据订单号前缀分发处理")
 	switch {
 	case strings.HasPrefix(orderNo, "Q_"):
@@ -216,7 +236,7 @@ func (l *WechatPayRefundCallbackLogic) WechatPayRefundCallback(w http.ResponseWr
 		processErr = l.handleQueryOrderRefund(orderNo, status)
 	}
 
-	// 4. 处理错误并响应
+	// 5. 处理错误并响应
 	if processErr != nil {
 		logx.Errorf("【退款回调】处理退款订单失败: orderNo=%s, err=%v", orderNo, processErr)
 	} else {