"""
********************************************
* @Date: 2024 09 27
* @Description: BackupObject备份对象
********************************************
"""

import os
from typing import List, Union
from .tree_object import TreeObject
from .blob_object import BlobObject


class BackupObject(ObjectBase):
    """
    备份对象，负责管理存储对象(tree、blob)对象、备份信息、恢复等操作
    """

    backup_name: str
    backup_time_lately: str
    backup_time_create: str
    backup_size: int
    backup_version_number: int
    backup_tree: List[Union[TreeObject, BlobObject]]
    new_backup_flag: bool

    def __init__(self, backup_name: str, backup_base_path: str):
        self.backup_name = backup_name

        backup_path = os.path.join(backup_base_path, backup_name)
        if not os.path.exists(backup_path):
            self.new_backup_flag = True
        else:
            self.new_backup_flag = False
            pass #TODO 读取备份信息
        

    def createNewBackup(self, backup_dirs: List[str]):
        """
        创建新的备份

        :return
        """
        for backup_dir in backup_dirs:
            if os.path.isdir(backup_dir):
                self.backup_tree.append(TreeObject(backup_dir))
            else:
                self.backup_tree.append(BlobObject(backup_dir))

    def backup(self):
        pass

    def recover(self, recover_path: str):
        """
        恢复到指定备份

        :return
        """
        pass

    def getBackupTree(self):
        """
        获取备份树

        :return
        """
        pass