fix: 修复订单状态机转换校验与结算确认目标状态

app/order/api/internal/logic/order/helpers.go

@@ -3,6 +3,8 @@ package order
 import (
 	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"strconv"
 	"time"
 
@@ -55,13 +57,39 @@ func toAPIOrder(in *orderservice.Orders) types.Order {
 	return order
 }
 
+// validTransitions defines the allowed order state transitions per the API spec.
+var validTransitions = map[string][]string{
+	"pending_payment": {"pending_accept"},
+	"pending_accept":  {"in_progress", "cancelled"},
+	"in_progress":     {"pending_close", "disputed"},
+	"pending_close":   {"pending_review", "disputed"},
+	"pending_review":  {"completed"},
+	"disputed":        {"pending_review"},
+}
+
 func transitionOrderStatus(ctx context.Context, svcCtx *svc.ServiceContext, orderID int64, toStatus string, setAcceptedAt bool, setClosedAt bool, setCompletedAt bool, setCancelledAt bool) error {
 	current, err := svcCtx.OrderRpc.GetOrdersById(ctx, &orderservice.GetOrdersByIdReq{Id: orderID})
 	if err != nil {
 		return err
 	}
 	if current.GetOrders() == nil {
-		return nil
+		return errors.New("order not found")
+	}
+
+	fromStatus := current.Orders.GetStatus()
+	allowed, ok := validTransitions[fromStatus]
+	if !ok {
+		return fmt.Errorf("order status %q does not allow any transition", fromStatus)
+	}
+	found := false
+	for _, s := range allowed {
+		if s == toStatus {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return fmt.Errorf("transition from %q to %q is not allowed", fromStatus, toStatus)
 	}
 
 	now := time.Now().Unix()
@@ -87,7 +115,6 @@ func transitionOrderStatus(ctx context.Context, svcCtx *svc.ServiceContext, orde
 		return err
 	}
 
-	fromStatus := current.Orders.GetStatus()
 	actorID, _ := contextj.UserIDFrom(ctx)
 	actorRole := "system"
 	if actorID > 0 {