151 lines
4.7 KiB
Python
151 lines
4.7 KiB
Python
"""Temporary file and directory management for downloads."""
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import hashlib
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import logging
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from pathlib import Path
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from typing import TYPE_CHECKING
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from app.library.Utils import delete_dir
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from .utils import is_safe_to_delete_dir
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if TYPE_CHECKING:
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from app.library.ItemDTO import ItemDTO
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class TempManager:
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def __init__(
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self,
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info: "ItemDTO",
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temp_dir: str | None,
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temp_disabled: bool,
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temp_keep: bool,
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logger: logging.Logger,
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):
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"""
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Initialize temp manager.
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Args:
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info: Download information object
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temp_dir: Base temporary directory path
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temp_disabled: Whether temporary directory feature is disabled
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temp_keep: Whether to keep temp files after download
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logger: Logger instance
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"""
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self.info = info
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self.temp_dir = temp_dir
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self.temp_disabled = temp_disabled
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self.temp_keep = temp_keep
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self.logger = logger
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self.temp_path: Path | None = None
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def create_temp_path(self) -> Path | None:
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"""
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Create unique temporary directory for this download.
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Returns:
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Path to created temporary directory, or None if disabled
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"""
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if self.temp_disabled or not self.temp_dir:
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return None
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self.temp_path = Path(self.temp_dir) / hashlib.shake_256(f"D-{self.info.id}".encode()).hexdigest(5)
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if not self.temp_path.exists():
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self.temp_path.mkdir(parents=True, exist_ok=True)
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return self.temp_path
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def delete_temp(self, by_pass: bool = False) -> None:
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"""
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Delete temporary directory if conditions are met.
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Temp directory is kept if:
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- temp_keep is enabled
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- temp_disabled is enabled
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- Download hasn't finished but has partial data (unless by_pass=True)
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Args:
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by_pass: Force deletion regardless of download state
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"""
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if self.temp_disabled or self.temp_keep is True or not self.temp_path:
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return
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if (
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not by_pass
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and "finished" != self.info.status
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and self.info.downloaded_bytes
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and self.info.downloaded_bytes > 0
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):
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self.logger.warning(
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"Keeping temp folder '%s' for unfinished download '%s'.",
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self.temp_path,
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self.info.title,
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extra={
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"download": {
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"download_id": self.info._id,
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"item_id": self.info.id,
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"title": self.info.title,
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"temp_path": str(self.temp_path),
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"status": self.info.status,
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}
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},
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)
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return
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tmp_dir = Path(self.temp_path)
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if not tmp_dir.exists():
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return
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if not self.temp_dir or not is_safe_to_delete_dir(tmp_dir, self.temp_dir):
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self.logger.warning(
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"Refusing to delete temp folder '%s' for '%s' because it is not safe.",
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self.temp_path,
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self.info.title,
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extra={
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"download": {
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"download_id": self.info._id,
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"item_id": self.info.id,
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"title": self.info.title,
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"temp_path": str(self.temp_path),
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"temp_dir": self.temp_dir,
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}
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},
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)
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return
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status: bool = delete_dir(tmp_dir)
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if by_pass:
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tmp_dir.mkdir(parents=True, exist_ok=True)
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self.logger.info(
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"Emptied temp folder '%s' for '%s'.",
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self.temp_path,
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self.info.title,
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extra={
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"download": {
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"download_id": self.info._id,
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"item_id": self.info.id,
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"title": self.info.title,
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"temp_path": str(self.temp_path),
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}
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},
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)
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else:
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self.logger.info(
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"Deleted temp folder '%s' for '%s'." if status else "Failed to delete temp folder '%s' for '%s'.",
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self.temp_path,
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self.info.title,
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extra={
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"download": {
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"download_id": self.info._id,
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"item_id": self.info.id,
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"title": self.info.title,
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"temp_path": str(self.temp_path),
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"deleted": status,
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}
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},
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)
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