mirror of
https://github.com/Findus23/PaperLibrary-cli.git
synced 2024-09-20 17:03:46 +02:00
78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
import hashlib
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import os
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import shutil
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import string
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from datetime import datetime
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from pathlib import Path
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from tzlocal import get_localzone
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from paperlibrary.api import PaperLibraryAPI
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from paperlibrary.config import basedir
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def format_filename(s: str) -> str:
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additional_letters = ["ä", "Ä", "ö", "Ö", "ü", "Ü"]
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valid_chars = f"-_.() {string.ascii_letters}{string.digits}{''.join(additional_letters)}"
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filename = ''.join(c for c in s if c in valid_chars)
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# filename = filename.replace(' ', '_') # I don't like spaces in filenames.
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return filename
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def write_symlinks(api: PaperLibraryAPI):
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...
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pdf_dir = basedir / "pdfs"
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author_dir = basedir / "by_author"
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shutil.rmtree(author_dir, ignore_errors=True)
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author_dir.mkdir()
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for author in api.fetch_authors():
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author_subdir = author_dir / format_filename(author.name)
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author_subdir.mkdir()
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for paper in author.papers:
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sourcefile = pdf_dir / f"{paper.main_pdf.id}.pdf"
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targetfile = author_subdir / "{}.pdf".format(format_filename(paper.title))
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targetfile.symlink_to(sourcefile)
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def download_file(api: PaperLibraryAPI, url: str, target_file: Path):
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r = api.s.get(url)
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r.raise_for_status()
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with target_file.open("wb") as f:
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for chunk in r.iter_content(1024):
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f.write(chunk)
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def hash_file(file: Path, buffer_size=65536) -> str:
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sha265 = hashlib.sha256()
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with file.open("rb") as f:
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while True:
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data = f.read(buffer_size)
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if not data:
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break
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sha265.update(data)
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return sha265.hexdigest()
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def update_pdfs(api: PaperLibraryAPI):
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pdf_dir = basedir / "pdfs"
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pdf_dir.mkdir(exist_ok=True)
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for pdf in api.fetch_pdfs():
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pdf_file = pdf_dir / f"{pdf.id}.pdf"
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if not pdf_file.exists():
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download_file(api, pdf.file, pdf_file)
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continue
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if hash_file(pdf_file) != pdf.sha265:
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modification_date = datetime.fromtimestamp(
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os.path.getmtime(pdf_file),
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get_localzone()
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)
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print(modification_date)
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print(pdf.updated_at)
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# print(modification_date - pdf.updated_at)
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if modification_date > pdf.updated_at:
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raise ValueError("local file is newer")
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else:
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raise ValueError("remote file is newer")
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# TODO: check if file should be uploaded or downloaded
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