mirror of
https://github.com/RhenCloud/Cloud-Index.git
synced 2025-12-06 07:06:41 +08:00
687 lines
24 KiB
Python
687 lines
24 KiB
Python
from datetime import datetime, timedelta
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from io import BytesIO
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from typing import Any, Dict, Optional
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import requests
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from PIL import Image
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from config import Config
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from .base import BaseStorage
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class _InvalidGrant(Exception):
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"""内部异常：用于标记 invalid_grant 以便进行下一次尝试"""
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pass
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class OnedriveStorage(BaseStorage):
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"""基于 OneDrive 的存储实现，支持自动令牌刷新"""
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def __init__(self):
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"""初始化 OneDrive 存储客户端"""
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self.client_id = Config.ONEDRIVE_CLIENT_ID
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self.client_secret = Config.ONEDRIVE_CLIENT_SECRET
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self.refresh_token = Config.ONEDRIVE_REFRESH_TOKEN
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self.folder_id = Config.ONEDRIVE_FOLDER_ID
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self.graph_api_url = "https://graph.microsoft.com/v1.0"
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if not (self.client_id and self.client_secret and self.refresh_token):
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raise RuntimeError("ONEDRIVE_CLIENT_ID, ONEDRIVE_CLIENT_SECRET, and ONEDRIVE_REFRESH_TOKEN must be set")
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# 如果没有指定 folder_id，使用 /me/drive/root
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self.folder_item_id = self.folder_id or "root"
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# 初始化 access_token 并刷新
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self.access_token = None
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self._refresh_token()
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def _refresh_token(self) -> None:
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"""刷新 OneDrive 访问令牌"""
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configured_scopes = getattr(Config, "ONEDRIVE_SCOPES", None)
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attempts = [None] + ([configured_scopes] if configured_scopes else []) + ["Files.ReadWrite.All offline_access"]
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token_json = self._perform_refresh_attempts(attempts)
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self.access_token = token_json["access_token"]
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new_refresh = token_json.get("refresh_token")
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if new_refresh:
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self.refresh_token = new_refresh
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self._access_token_expires_in = token_json.get("expires_in")
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def _perform_refresh_attempts(self, attempts: list) -> dict:
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errors: list[str] = []
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for idx, scope in enumerate(attempts, start=1):
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try:
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token_json = self._do_refresh_attempt(scope)
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return token_json
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except _InvalidGrant as e:
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errors.append(f"Attempt {idx} invalid_grant: {str(e)}")
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continue
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raise RuntimeError("Failed to refresh OneDrive token: " + " | ".join(errors))
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def _do_refresh_attempt(self, scope: str | None) -> dict:
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url = "https://login.microsoftonline.com/common/oauth2/v2.0/token"
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headers = {"Content-Type": "application/x-www-form-urlencoded"}
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payload = {
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"client_id": self.client_id,
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"grant_type": "refresh_token",
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"refresh_token": self.refresh_token,
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}
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if scope:
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payload["scope"] = scope
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if self.client_secret:
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payload["client_secret"] = self.client_secret
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redirect_uri = getattr(Config, "ONEDRIVE_REDIRECT_URI", None)
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if redirect_uri:
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payload["redirect_uri"] = redirect_uri
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resp = requests.post(url, data=payload, headers=headers, timeout=20)
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try:
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detail = resp.json()
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except Exception:
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detail = resp.text
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if resp.status_code != 200:
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# 如果是 invalid_grant，抛出内部异常以触发下一次尝试
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if isinstance(detail, dict) and detail.get("error") == "invalid_grant":
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raise _InvalidGrant(detail)
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raise RuntimeError(f"Token endpoint error {resp.status_code}: {detail}")
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if isinstance(detail, dict) and detail.get("error"):
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if detail.get("error") == "invalid_grant":
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raise _InvalidGrant(detail)
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raise RuntimeError(f"Token response error: {detail}")
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token_json = detail if isinstance(detail, dict) else {}
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access_token = token_json.get("access_token")
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if not access_token:
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# 视为无效，交给下一次尝试
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raise _InvalidGrant({"error": "missing_access_token", "detail": detail})
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return token_json
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def _try_refresh(self, func):
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"""尝试执行函数，如果失败则刷新令牌后重试（处理令牌过期）"""
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try:
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return func()
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except Exception as e:
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if "401" in str(e) or "Unauthorized" in str(e):
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# 令牌过期，刷新并重试
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self._refresh_token()
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return func()
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raise
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def _api_request(self, method: str, url: str, **kwargs):
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"""
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执行 API 请求，自动处理令牌过期
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Args:
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method: HTTP 方法 (GET, POST, PUT, DELETE, PATCH)
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url: API URL
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**kwargs: 其他请求参数
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Returns:
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响应对象
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"""
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def _do_request():
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response = requests.request(method, url, headers=self._headers(), **kwargs)
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if response.status_code == 401:
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raise RuntimeError("Unauthorized - OneDrive access token expired")
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return response
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return self._try_refresh(_do_request)
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def _headers(self) -> Dict[str, str]:
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"""返回 API 请求的公共头部信息"""
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return {
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"Authorization": f"Bearer {self.access_token}",
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"Content-Type": "application/json",
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}
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def _verify_connection(self) -> None:
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"""验证 OneDrive 连接是否有效"""
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try:
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url = f"{self.graph_api_url}/me/drive"
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response = requests.get(url, headers=self._headers(), timeout=10)
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if response.status_code != 200:
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raise RuntimeError(f"OneDrive connection failed: {response.text}")
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except Exception as e:
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raise RuntimeError(f"Failed to connect to OneDrive: {str(e)}") from None
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def _get_folder_id(self, path: str) -> Optional[str]:
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"""获取指定路径的文件夹 ID"""
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if not path or path == "/":
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return self.folder_item_id
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try:
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# 直接获取该路径对应项的元数据（而不是其子项），以拿到该文件夹自身的 id
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path = path.strip("/")
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if self.folder_item_id == "root":
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url = f"{self.graph_api_url}/me/drive/root:/{path}:"
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else:
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{path}:"
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response = requests.get(url, headers=self._headers(), timeout=10)
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if response.status_code == 200:
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item = response.json()
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if item.get("folder"):
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return item.get("id")
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except Exception:
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pass
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return None
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def list_objects(self, prefix: str = "") -> Dict[str, Any]:
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"""
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列出存储桶中的对象
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Args:
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prefix: 对象前缀（用于目录浏览）
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Returns:
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包含对象列表的字典
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"""
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try:
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prefix = prefix.rstrip("/") if prefix else ""
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# 直接基于路径列出，避免先查 ID 再列出造成的额外往返
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select = "$select=name,size,lastModifiedDateTime,id,folder,file"
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if prefix:
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if self.folder_item_id == "root":
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url = f"{self.graph_api_url}/me/drive/root:/{prefix}:/children?{select}"
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else:
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{prefix}:/children?{select}"
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else:
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if self.folder_item_id == "root":
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url = f"{self.graph_api_url}/me/drive/root/children?{select}"
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else:
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}/children?{select}"
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response = self._api_request("GET", url)
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response.raise_for_status()
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items = response.json().get("value", [])
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files = []
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folders = []
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for item in items:
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# 跳过特殊文件
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if item.get("name", "").startswith("."):
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continue
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item_path = f"{prefix}/{item.get('name')}" if prefix else item.get("name")
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if "folder" in item:
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# 这是一个文件夹
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folders.append({"Prefix": f"{item_path}/"})
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else:
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# 这是一个文件
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size = item.get("size", 0)
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modified_time = item.get("lastModifiedDateTime", datetime.now().isoformat())
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# 解析 ISO 格式时间
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try:
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if isinstance(modified_time, str):
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modified_time = datetime.fromisoformat(modified_time.replace("Z", "+00:00"))
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except Exception:
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modified_time = datetime.now()
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files.append(
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{
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"Key": item_path,
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"Size": size,
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"LastModified": modified_time,
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"ETag": item.get("id", ""),
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}
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)
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return {
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"Contents": sorted(files, key=lambda x: x["Key"]),
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"CommonPrefixes": sorted(folders, key=lambda x: x["Prefix"]),
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}
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except Exception as e:
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import traceback
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traceback.print_exc()
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raise RuntimeError(f"Failed to list OneDrive objects: {str(e)}") from None
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def get_object_info(self, key: str) -> Dict[str, Any]:
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"""
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获取对象基本信息
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Args:
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key: 对象键名
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Returns:
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对象元数据
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"""
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try:
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key = key.strip("/")
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:"
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response = self._api_request("GET", url)
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response.raise_for_status()
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item = response.json()
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return {
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"Key": key,
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"Size": item.get("size", 0),
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"LastModified": item.get("lastModifiedDateTime", datetime.now().isoformat()),
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"ETag": item.get("id", ""),
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}
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except Exception as e:
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raise RuntimeError(f"Failed to get OneDrive object info: {str(e)}") from None
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def get_object(self, key: str) -> Dict[str, Any]:
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"""
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获取对象内容
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Args:
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key: 对象键名
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Returns:
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包含对象内容的字典
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"""
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try:
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key = key.strip("/")
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# 获取下载 URL
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:/content"
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response = self._api_request("GET", url)
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response.raise_for_status()
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return {
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"Body": response.content,
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"ContentType": response.headers.get("Content-Type", "application/octet-stream"),
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}
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except Exception as e:
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raise RuntimeError(f"Failed to get OneDrive object: {str(e)}") from None
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def generate_presigned_url(self, key: str, expires: int = None) -> str:
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"""
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为指定对象生成预签名 URL
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Args:
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key: 对象键名
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expires: 过期时间（秒）
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Returns:
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预签名 URL，失败返回 None
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"""
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try:
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expires = expires or Config.PRESIGNED_URL_EXPIRES
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key = key.strip("/")
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# OneDrive 会自动处理预签名 URL
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:/createLink"
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request_body = {
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"type": "view",
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"expirationDateTime": (datetime.utcnow() + timedelta(seconds=expires)).isoformat() + "Z",
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}
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response = requests.post(url, headers=self._headers(), json=request_body)
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if response.status_code == 201:
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return response.json().get("link", {}).get("webUrl")
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return None
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except Exception:
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return None
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def get_public_url(self, key: str) -> str:
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"""
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生成对象的公共访问 URL
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Args:
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key: 对象键名
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Returns:
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公共 URL，未配置返回 None
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"""
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try:
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key = key.strip("/")
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# OneDrive 的共享 URL
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:/webUrl"
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response = requests.get(url, headers=self._headers())
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if response.status_code == 200:
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return response.json().get("webUrl")
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return None
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except Exception:
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return None
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def upload_file(self, key: str, file_data: bytes, content_type: str = None) -> bool:
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"""
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上传文件
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Args:
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key: 对象键名
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file_data: 文件内容
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content_type: 文件类型（MIME type，可选）
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Returns:
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上传成功返回 True，失败返回 False
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"""
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try:
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key = key.strip("/")
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:/content"
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# 自定义头部（因为我们需要指定 Content-Type）
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headers = {
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"Authorization": f"Bearer {self.access_token}",
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"Content-Type": content_type or "application/octet-stream",
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}
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response = requests.put(url, headers=headers, data=file_data)
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response.raise_for_status()
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return response.status_code == 200 or response.status_code == 201
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except Exception as e:
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raise RuntimeError(
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f"Failed to upload file to OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
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) from None
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def delete_file(self, key: str) -> bool:
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"""
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删除文件
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Args:
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key: 对象键名
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Returns:
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删除成功返回 True，失败返回 False
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"""
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try:
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key = key.strip("/")
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{key}:"
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response = self._api_request("DELETE", url)
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return response.status_code == 204
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except Exception as e:
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raise RuntimeError(f"Failed to delete file from OneDrive: {str(e)}") from None
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def copy_file(self, source_key: str, dest_key: str) -> bool:
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"""
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复制文件
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Args:
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source_key: 源文件键名
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dest_key: 目标文件键名
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Returns:
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复制成功返回 True，失败返回 False
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"""
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try:
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source = source_key.strip("/")
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destination = dest_key.strip("/")
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# 获取源文件 ID
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source_url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{source}:"
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source_response = self._api_request("GET", source_url)
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source_response.raise_for_status()
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source_item = source_response.json()
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# 复制文件
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copy_url = f"{self.graph_api_url}/me/drive/items/{source_item.get('id')}/copy"
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copy_body = {
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"parentReference": {"id": self.folder_item_id},
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"name": destination.split("/")[-1],
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}
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copy_response = self._api_request("POST", copy_url, json=copy_body)
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copy_response.raise_for_status()
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return copy_response.status_code == 202 or copy_response.status_code == 200
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except Exception as e:
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raise RuntimeError(f"Failed to copy file in OneDrive: {str(e)}") from None
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def generate_thumbnail(self, file_path: str) -> bytes:
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"""
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生成图片缩略图
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Args:
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file_path: 文件路径
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Returns:
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缩略图字节数据
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"""
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try:
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file_path = file_path.strip("/")
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# 获取缩略图 URL
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url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{file_path}:/thumbnails"
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response = requests.get(url, headers=self._headers())
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response.raise_for_status()
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thumbnails = response.json().get("value", [])
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if thumbnails:
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thumb_set = thumbnails[0]
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# 获取中等大小的缩略图
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thumb_url = thumb_set.get("c", {}).get("url") or thumb_set.get("m", {}).get("url")
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if thumb_url:
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thumb_response = requests.get(thumb_url)
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if thumb_response.status_code == 200:
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return thumb_response.content
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# 如果没有缩略图，尝试生成一个
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return self._generate_fallback_thumbnail(file_path)
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except Exception:
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return None
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def _generate_fallback_thumbnail(self, file_path: str) -> bytes:
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"""
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生成备用缩略图（当 OneDrive 没有缩略图时）
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Args:
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file_path: 文件路径
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Returns:
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缩略图字节数据
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"""
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try:
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file_obj = self.get_object(file_path)
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img = Image.open(BytesIO(file_obj["Body"]))
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# 调整大小
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img.thumbnail(Config.THUMB_SIZE, Image.Resampling.LANCZOS)
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# 保存为 PNG
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thumb_buffer = BytesIO()
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img.save(thumb_buffer, format="PNG")
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return thumb_buffer.getvalue()
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except Exception:
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return None
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def rename_file(self, old_key: str, new_key: str) -> bool:
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"""
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重命名文件
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Args:
|
||
old_key: 旧的文件键名
|
||
new_key: 新的文件键名
|
||
|
||
Returns:
|
||
重命名成功返回 True，失败返回 False
|
||
"""
|
||
try:
|
||
old_key = old_key.strip("/")
|
||
new_key = new_key.strip("/")
|
||
|
||
# 获取旧文件的 ID
|
||
url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{old_key}:"
|
||
response = self._api_request("GET", url)
|
||
response.raise_for_status()
|
||
item_id = response.json().get("id")
|
||
|
||
# 更新文件名
|
||
update_url = f"{self.graph_api_url}/me/drive/items/{item_id}"
|
||
update_body = {"name": new_key.split("/")[-1]}
|
||
|
||
response = self._api_request("PATCH", update_url, json=update_body)
|
||
response.raise_for_status()
|
||
|
||
return response.status_code == 200
|
||
except Exception as e:
|
||
raise RuntimeError(
|
||
f"Failed to rename file in OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
|
||
) from None
|
||
|
||
def delete_folder(self, prefix: str) -> bool:
|
||
"""
|
||
删除文件夹及其中的所有文件
|
||
|
||
Args:
|
||
prefix: 文件夹前缀
|
||
|
||
Returns:
|
||
删除成功返回 True，失败返回 False
|
||
"""
|
||
try:
|
||
prefix = prefix.rstrip("/")
|
||
|
||
# 获取文件夹中的所有项目
|
||
items = self.list_objects(prefix)
|
||
|
||
# 删除所有文件
|
||
for file in items.get("Contents", []):
|
||
self.delete_file(file["Key"])
|
||
|
||
# 删除所有子文件夹
|
||
for folder in items.get("CommonPrefixes", []):
|
||
self.delete_folder(folder["Prefix"])
|
||
|
||
# 删除文件夹本身
|
||
url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{prefix}:"
|
||
response = self._api_request("DELETE", url)
|
||
|
||
return response.status_code == 204
|
||
except Exception as e:
|
||
raise RuntimeError(
|
||
f"Failed to delete folder from OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
|
||
) from None
|
||
|
||
def rename_folder(self, old_prefix: str, new_prefix: str) -> bool:
|
||
"""
|
||
重命名文件夹
|
||
|
||
Args:
|
||
old_prefix: 旧的文件夹前缀
|
||
new_prefix: 新的文件夹前缀
|
||
|
||
Returns:
|
||
重命名成功返回 True，失败返回 False
|
||
"""
|
||
try:
|
||
old_prefix = old_prefix.rstrip("/")
|
||
new_prefix = new_prefix.rstrip("/")
|
||
|
||
# 获取旧文件夹的 ID
|
||
url = f"{self.graph_api_url}/me/drive/items/{self.folder_item_id}:/{old_prefix}:"
|
||
response = self._api_request("GET", url)
|
||
response.raise_for_status()
|
||
item_id = response.json().get("id")
|
||
|
||
# 更新文件夹名
|
||
update_url = f"{self.graph_api_url}/me/drive/items/{item_id}"
|
||
update_body = {"name": new_prefix.split("/")[-1]}
|
||
|
||
response = self._api_request("PATCH", update_url, json=update_body)
|
||
response.raise_for_status()
|
||
|
||
return response.status_code == 200
|
||
except Exception as e:
|
||
raise RuntimeError(
|
||
f"Failed to rename folder in OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
|
||
) from None
|
||
|
||
def copy_folder(self, source_prefix: str, dest_prefix: str) -> bool:
|
||
"""
|
||
复制文件夹及其中的所有文件
|
||
|
||
Args:
|
||
source_prefix: 源文件夹前缀
|
||
dest_prefix: 目标文件夹前缀
|
||
|
||
Returns:
|
||
复制成功返回 True，失败返回 False
|
||
"""
|
||
try:
|
||
source_prefix = source_prefix.rstrip("/")
|
||
dest_prefix = dest_prefix.rstrip("/")
|
||
|
||
# 创建目标文件夹
|
||
self.create_folder(dest_prefix + "/")
|
||
|
||
# 获取源文件夹中的所有项目
|
||
items = self.list_objects(source_prefix)
|
||
|
||
# 复制所有文件
|
||
for file in items.get("Contents", []):
|
||
source_key = file["Key"]
|
||
# 保持相对路径
|
||
relative_path = source_key[len(source_prefix) + 1 :]
|
||
dest_key = f"{dest_prefix}/{relative_path}"
|
||
self.copy_file(source_key, dest_key)
|
||
|
||
# 递归复制子文件夹
|
||
for folder in items.get("CommonPrefixes", []):
|
||
source_folder = folder["Prefix"].rstrip("/")
|
||
relative_folder = source_folder[len(source_prefix) + 1 :]
|
||
dest_folder = f"{dest_prefix}/{relative_folder}"
|
||
self.copy_folder(source_folder, dest_folder)
|
||
|
||
return True
|
||
except Exception as e:
|
||
raise RuntimeError(
|
||
f"Failed to copy folder in OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
|
||
) from None
|
||
|
||
def create_folder(self, key: str) -> bool:
|
||
"""
|
||
创建文件夹
|
||
|
||
Args:
|
||
key: 文件夹路径（以 / 结尾）
|
||
|
||
Returns:
|
||
创建成功返回 True，失败返回 False
|
||
"""
|
||
try:
|
||
key = key.rstrip("/")
|
||
|
||
# 获取父文件夹 ID
|
||
parts = key.split("/")
|
||
parent_id = self.folder_item_id
|
||
|
||
# 创建每一层文件夹
|
||
for _, folder_name in enumerate(parts):
|
||
# 检查文件夹是否已存在
|
||
existing_url = f"{self.graph_api_url}/me/drive/items/{parent_id}:/{folder_name}:"
|
||
existing_response = self._api_request("GET", existing_url)
|
||
|
||
if existing_response.status_code == 200:
|
||
parent_id = existing_response.json().get("id")
|
||
continue
|
||
|
||
# 创建新文件夹
|
||
create_url = f"{self.graph_api_url}/me/drive/items/{parent_id}/children"
|
||
create_body = {"name": folder_name, "folder": {}}
|
||
|
||
create_response = self._api_request("POST", create_url, json=create_body)
|
||
create_response.raise_for_status()
|
||
|
||
parent_id = create_response.json().get("id")
|
||
|
||
return True
|
||
except Exception as e:
|
||
raise RuntimeError(
|
||
f"Failed to create folder in OneDrive: {str(e)}" if isinstance(e, Exception) else str(e)
|
||
) from None
|