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97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
import re
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from contextlib import asynccontextmanager
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from io import BytesIO, TextIOWrapper
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from typing import AsyncContextManager, AsyncIterator
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from cache import AsyncTTL
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from webdav3.client import Client as WebDAVclient
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from ..settings import SETTINGS
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class WebDAV:
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_webdav_client = WebDAVclient(
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{
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"webdav_hostname": SETTINGS.webdav.url,
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"webdav_login": SETTINGS.webdav.username,
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"webdav_password": SETTINGS.webdav.password,
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"disable_check": SETTINGS.webdav.disable_check,
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}
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)
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@AsyncTTL(time_to_live=SETTINGS.cache_ttl)
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@classmethod
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async def list_files(
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cls,
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*,
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directory: str = "",
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regex: re.Pattern[str] = re.compile(""),
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) -> list[str]:
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"""
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Liste aller Dateien im Ordner `directory`, die zur RegEx `regex` passen
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"""
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ls = cls._webdav_client.list(directory)
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return [f"{directory}/{path}" for path in ls if regex.search(path)]
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@AsyncTTL(time_to_live=SETTINGS.cache_ttl)
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@classmethod
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async def file_exists(cls, path: str) -> bool:
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"""
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`True`, wenn an Pfad `path` eine Datei existiert
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"""
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return cls._webdav_client.check(path)
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@classmethod
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async def read_buffer(cls, path: str) -> AsyncContextManager[BytesIO]:
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"""
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Datei aus Pfad `path` in einen `BytesIO` Puffer laden
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"""
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@AsyncTTL(time_to_live=SETTINGS.cache_ttl)
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async def inner() -> BytesIO:
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buffer = BytesIO()
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cls._webdav_client.resource(path).write_to(buffer)
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return buffer
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@asynccontextmanager
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async def ctx() -> AsyncIterator[BytesIO]:
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buffer = await inner()
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buffer.seek(0)
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yield buffer
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return ctx()
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@AsyncTTL(time_to_live=SETTINGS.cache_ttl)
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@classmethod
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async def read_text(cls, path: str, encoding="utf-8") -> str:
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"""
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Datei aus Pfad `path` als string zurückgeben
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"""
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async with await cls.read_buffer(path) as buffer:
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tio = TextIOWrapper(buffer, encoding=encoding)
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tio.seek(0)
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return tio.read().strip()
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@classmethod
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async def write_buffer(cls, path: str, buffer: BytesIO) -> None:
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"""
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Puffer `buffer` in Datei in Pfad `path` schreiben
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"""
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cls._webdav_client.resource(path).read_from(buffer)
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@classmethod
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async def write_text(cls, path: str, content: str, encoding="utf-8") -> None:
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"""
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String `content` in Datei in Pfad `path` schreiben
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"""
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buffer = BytesIO(content.encode(encoding=encoding))
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buffer.seek(0)
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await cls.write_buffer(path, buffer)
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