新增退款时应当快照当时的资产

internal/model/dto/refund_dto.go

@@ -57,6 +57,10 @@ type RefundResponse struct {
 	RefundNo              string `json:"refund_no" description:"退款单号"`
 	OrderID               uint   `json:"order_id" description:"关联订单ID"`
 	OrderNo               string `json:"order_no" description:"订单号"`
+	AssetIdentifier       string `json:"asset_identifier,omitempty" description:"下单时资产的标识符快照（ICCID 或 VirtualNo）"`
+	AssetType             string `json:"asset_type,omitempty" description:"资产类型 (card:单卡, device:设备)"`
+	IotCardID             *uint  `json:"iot_card_id,omitempty" description:"IoT卡ID"`
+	DeviceID              *uint  `json:"device_id,omitempty" description:"设备ID"`
 	PackageUsageID        *uint  `json:"package_usage_id,omitempty" description:"关联套餐使用记录ID"`
 	ShopID                *uint  `json:"shop_id,omitempty" description:"店铺ID"`
 	ShopName              string `json:"shop_name,omitempty" description:"店铺名称"`

internal/model/refund.go

@@ -17,6 +17,10 @@ type RefundRequest struct {
 	RefundNo        string `gorm:"column:refund_no;type:varchar(50);uniqueIndex:idx_refund_request_refund_no,where:deleted_at IS NULL;not null;comment:退款单号（RF+日期时间+6位随机数）" json:"refund_no"`
 	OrderID         uint   `gorm:"column:order_id;index;not null;comment:关联订单ID" json:"order_id"`
 	OrderNo         string `gorm:"column:order_no;type:varchar(30);not null;default:'';comment:关联订单号快照" json:"order_no"`
+	OrderType       string `gorm:"column:order_type;type:varchar(20);not null;default:'';comment:订单类型快照（single_card/device）" json:"order_type,omitempty"`
+	AssetIdentifier string `gorm:"column:asset_identifier;type:varchar(100);not null;default:'';comment:下单时资产标识符快照（ICCID 或 VirtualNo）" json:"asset_identifier,omitempty"`
+	IotCardID       *uint  `gorm:"column:iot_card_id;comment:下单时IoT卡ID快照" json:"iot_card_id,omitempty"`
+	DeviceID        *uint  `gorm:"column:device_id;comment:下单时设备ID快照" json:"device_id,omitempty"`
 	PackageUsageID  *uint  `gorm:"column:package_usage_id;comment:关联套餐使用记录ID（可选）" json:"package_usage_id,omitempty"`
 	ShopID          *uint  `gorm:"column:shop_id;index;comment:店铺ID（从订单获取，用于数据权限过滤）" json:"shop_id,omitempty"`
 	ShopName        string `gorm:"column:shop_name;->" json:"shop_name,omitempty"`

internal/service/refund/service.go

@@ -111,6 +111,10 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateRefundRequest) (*dt
 		RefundNo:              generateRefundNo(),
 		OrderID:               req.OrderID,
 		OrderNo:               order.OrderNo,
+		OrderType:             order.OrderType,
+		AssetIdentifier:       order.AssetIdentifier,
+		IotCardID:             order.IotCardID,
+		DeviceID:              order.DeviceID,
 		PackageUsageID:        req.PackageUsageID,
 		ShopID:                shopID,
 		ActualReceivedAmount:  req.ActualReceivedAmount,
@@ -650,11 +654,22 @@ func generateRefundNo() string {
 
 // buildRefundResponse 将退款 Model 转换为 DTO 响应
 func buildRefundResponse(r *model.RefundRequest) *dto.RefundResponse {
+	assetType := ""
+	if r.OrderType == model.OrderTypeSingleCard {
+		assetType = "card"
+	} else if r.OrderType == model.OrderTypeDevice {
+		assetType = "device"
+	}
+
 	resp := &dto.RefundResponse{
 		ID:                    r.ID,
 		RefundNo:              r.RefundNo,
 		OrderID:               r.OrderID,
 		OrderNo:               r.OrderNo,
+		AssetIdentifier:       r.AssetIdentifier,
+		AssetType:             assetType,
+		IotCardID:             r.IotCardID,
+		DeviceID:              r.DeviceID,
 		PackageUsageID:        r.PackageUsageID,
 		ShopID:                r.ShopID,
 		ShopName:              r.ShopName,

migrations/000133_add_asset_snapshot_to_refund_request.down.sql

@@ -0,0 +1,5 @@
+ALTER TABLE tb_refund_request
+    DROP COLUMN IF EXISTS device_id,
+    DROP COLUMN IF EXISTS iot_card_id,
+    DROP COLUMN IF EXISTS asset_identifier,
+    DROP COLUMN IF EXISTS order_type;

migrations/000133_add_asset_snapshot_to_refund_request.up.sql

@@ -0,0 +1,27 @@
+-- 为 tb_refund_request 新增资产快照字段
+-- 创建退款申请时从 tb_order 复制，避免退款列表/详情查询联表订单
+ALTER TABLE tb_refund_request
+    ADD COLUMN IF NOT EXISTS order_type VARCHAR(20) NOT NULL DEFAULT '',
+    ADD COLUMN IF NOT EXISTS asset_identifier VARCHAR(100) NOT NULL DEFAULT '',
+    ADD COLUMN IF NOT EXISTS iot_card_id BIGINT,
+    ADD COLUMN IF NOT EXISTS device_id BIGINT;
+
+COMMENT ON COLUMN tb_refund_request.order_type IS '订单类型快照（single_card/device）';
+COMMENT ON COLUMN tb_refund_request.asset_identifier IS '下单时资产标识符快照（ICCID 或 VirtualNo）';
+COMMENT ON COLUMN tb_refund_request.iot_card_id IS '下单时IoT卡ID快照';
+COMMENT ON COLUMN tb_refund_request.device_id IS '下单时设备ID快照';
+
+-- 存量数据回填：通过 order_id 关联 tb_order 填充资产快照字段
+UPDATE tb_refund_request r
+SET order_type = o.order_type,
+    asset_identifier = o.asset_identifier,
+    iot_card_id = o.iot_card_id,
+    device_id = o.device_id
+FROM tb_order o
+WHERE r.order_id = o.id
+  AND (
+      r.order_type = ''
+      OR r.asset_identifier = ''
+      OR r.iot_card_id IS NULL
+      OR r.device_id IS NULL
+  );