Fix: trigger err when move folder into itself (#1128)

models/folder.go

@@ -263,6 +263,13 @@ func (folder *Folder) CopyFolderTo(folderID uint, dstFolder *Folder) (size uint6
 // MoveFolderTo 将folder目录下的dirs子目录复制或移动到dstFolder，
 // 返回此过程中增加的容量
 func (folder *Folder) MoveFolderTo(dirs []uint, dstFolder *Folder) error {
+
+	// 如果目标位置为待移动的目录，会导致 parent 为自己
+	// 造成死循环且无法被除搜索以外的组件展示
+	if folder.OwnerID == dstFolder.OwnerID && util.ContainsUint(dirs, dstFolder.ID) {
+		return errors.New("cannot move a folder into itself")
+	}
+
 	// 更改顶级要移动目录的父目录指向
 	err := DB.Model(Folder{}).Where(
 		"id in (?) and owner_id = ? and parent_id = ?",

models/folder_test.go

@@ -493,7 +493,8 @@ func TestFolder_MoveOrCopyFolderTo_Move(t *testing.T) {
 	}
 	// 目标目录
 	dstFolder := Folder{
-		Model: gorm.Model{ID: 10},
+		Model:   gorm.Model{ID: 10},
+		OwnerID: 1,
 	}
 
 	// 成功
@@ -507,6 +508,12 @@ func TestFolder_MoveOrCopyFolderTo_Move(t *testing.T) {
 		asserts.NoError(mock.ExpectationsWereMet())
 		asserts.NoError(err)
 	}
+
+	// 移动自己到自己内部，失败
+	{
+		err := parFolder.MoveFolderTo([]uint{10, 2}, &dstFolder)
+		asserts.Error(err)
+	}
 }
 
 func TestFolder_FileInfoInterface(t *testing.T) {