feat: add admin order refund flow

Co-authored-by: multica-agent <github@multica.ai>

internal/model/log/log.go

@@ -23,6 +23,7 @@ const (
 	TypeSubscribeTraffic  Type = 21 // Subscription traffic log
 	TypeServerTraffic     Type = 22 // Server traffic log
 	TypeResetSubscribe    Type = 23 // Reset subscription log
+	TypeOrderRefund       Type = 24 // Admin order refund log
 	TypeLogin             Type = 30 // Login log
 	TypeRegister          Type = 31 // Registration log
 	TypeBalance           Type = 32 // Balance log
@@ -277,6 +278,42 @@ func (c *Commission) Unmarshal(data []byte) error {
 	return json.Unmarshal(data, aux)
 }
 
+type OrderRefund struct {
+	OrderId                int64  `json:"order_id"`
+	OrderNo                string `json:"order_no"`
+	OperatorUserId         int64  `json:"operator_user_id"`
+	OperatorAuthIdentifier string `json:"operator_auth_identifier,omitempty"`
+	TargetUserId           int64  `json:"target_user_id"`
+	UserSubscribeId        int64  `json:"user_subscribe_id"`
+	RefererUserId          int64  `json:"referer_user_id,omitempty"`
+	CommissionAmount       int64  `json:"commission_amount"`
+	Reason                 string `json:"reason,omitempty"`
+	OrderStatusBefore      uint8  `json:"order_status_before"`
+	OrderStatusAfter       uint8  `json:"order_status_after"`
+	SubscribeStatusBefore  uint8  `json:"subscribe_status_before"`
+	SubscribeStatusAfter   uint8  `json:"subscribe_status_after"`
+	SubscribeExpireBefore  int64  `json:"subscribe_expire_before"`
+	SubscribeExpireAfter   int64  `json:"subscribe_expire_after"`
+	CommissionBefore       int64  `json:"commission_before"`
+	CommissionAfter        int64  `json:"commission_after"`
+	Timestamp              int64  `json:"timestamp"`
+}
+
+func (o *OrderRefund) Marshal() ([]byte, error) {
+	type Alias OrderRefund
+	return json.Marshal(&struct {
+		*Alias
+	}{
+		Alias: (*Alias)(o),
+	})
+}
+
+func (o *OrderRefund) Unmarshal(data []byte) error {
+	type Alias OrderRefund
+	aux := (*Alias)(o)
+	return json.Unmarshal(data, aux)
+}
+
 // Gift represents a gift log entry.
 type Gift struct {
 	Type        uint16 `json:"type"`