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89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
import re
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from io import BytesIO
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from cache import AsyncTTL
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from cache.key import KEY
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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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}
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)
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@classmethod
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@AsyncTTL(time_to_live=SETTINGS.webdav.cache_ttl, skip_args=1)
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async def list_files(
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cls,
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directory: str = "",
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*,
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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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@classmethod
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@AsyncTTL(time_to_live=SETTINGS.webdav.cache_ttl, skip_args=1)
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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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@(_rb_ttl := AsyncTTL(time_to_live=SETTINGS.webdav.cache_ttl, skip_args=1))
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async def read_bytes(cls, path: str) -> bytes:
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"""
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Datei aus Pfad `path` als bytes laden
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"""
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buffer = BytesIO()
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cls._webdav_client.resource(path).write_to(buffer)
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buffer.seek(0)
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return buffer.read()
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@classmethod
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async def read_str(cls, path: str, encoding="utf-8") -> str:
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"""
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Datei aus Pfad `path` als string laden
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"""
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return (await cls.read_bytes(path)).decode(encoding=encoding).strip()
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@classmethod
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async def write_bytes(cls, path: str, buffer: bytes) -> None:
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"""
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Bytes `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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try:
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# hack: zugehörigen Cache-Eintrag entfernen
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# -> AsyncTTL._TTL.__contains__
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del cls._rb_ttl.ttl[KEY((path,), {})]
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except KeyError:
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# Cache-Eintrag existierte nicht
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pass
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@classmethod
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async def write_str(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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await cls.write_bytes(path, content.encode(encoding=encoding))
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