退款也应该记录快照

internal/service/refund/service.go

@@ -312,6 +312,7 @@ func (s *Service) refundAgentWalletPayment(ctx context.Context, tx *gorm.DB, ref
 	refType := constants.ReferenceTypeRefund
 	refID := refund.ID
 	remark := fmt.Sprintf("订单%s退款退回预充值钱包", order.OrderNo)
+	assetType, assetID, assetIdentifier := buildRefundWalletTransactionAssetSnapshot(order)
 	transaction := &model.AgentWalletTransaction{
 		AgentWalletID:      wallet.ID,
 		ShopID:             wallet.ShopID,
@@ -325,6 +326,9 @@ func (s *Service) refundAgentWalletPayment(ctx context.Context, tx *gorm.DB, ref
 		ReferenceType:      &refType,
 		ReferenceID:        &refID,
 		RelatedShopID:      relatedShopID,
+		AssetType:          assetType,
+		AssetID:            assetID,
+		AssetIdentifier:    assetIdentifier,
 		Remark:             &remark,
 		Creator:            operatorID,
 		ShopIDTag:          wallet.ShopIDTag,
@@ -965,3 +969,24 @@ func buildRefundResponse(r *model.RefundRequest) *dto.RefundResponse {
 
 	return resp
 }
+
+// buildRefundWalletTransactionAssetSnapshot 从订单中生成退款流水的资产快照。
+func buildRefundWalletTransactionAssetSnapshot(order *model.Order) (string, uint, string) {
+	if order == nil {
+		return "", 0, ""
+	}
+	switch order.OrderType {
+	case model.OrderTypeSingleCard:
+		if order.IotCardID == nil {
+			return constants.AssetTypeIotCard, 0, order.AssetIdentifier
+		}
+		return constants.AssetTypeIotCard, *order.IotCardID, order.AssetIdentifier
+	case model.OrderTypeDevice:
+		if order.DeviceID == nil {
+			return constants.AssetTypeDevice, 0, order.AssetIdentifier
+		}
+		return constants.AssetTypeDevice, *order.DeviceID, order.AssetIdentifier
+	default:
+		return "", 0, order.AssetIdentifier
+	}
+}