# ---------------------------------------------------------------------- # Core functionality # ----------------------------------------------------------------------
# Internal state (filled later) self._pdf_path: pathlib.Path | None = None
@dataclass class DownloadResult: """ Information returned after a download attempt. """ success: bool pdf_path: pathlib.Path | None = None message: str = "" http_status: Optional[int] = None elapsed_seconds: Optional[float] = None
open_after_download: If ``True`` the file will be opened with the default system PDF viewer after a successful download (cross‑platform implementation). """ self.check_folder = pathlib.Path(check_folder).expanduser().resolve() self.expected_count = expected_count self.pdf_url = pdf_url self.save_folder = pathlib.Path(save_folder).expanduser().resolve() self.filename = filename or self._derive_filename_from_url(pdf_url) self.timeout = timeout self.verify_ssl = verify_ssl self.headers = "User-Agent": user_agent self.overwrite = overwrite self.open_after_download = open_after_download if only 2 by kedibone pdf download
# Read the whole content (PDFs are usually <10 MiB, safe to keep in RAM) content = resp.content elapsed = time.perf_counter() - start return content, elapsed, resp.status_code
Author: ChatGPT (OpenAI) License: MIT """
""" ConditionalPdfDownloader ~~~~~~~~~~~~~~~~~~~~~~~~ filename: Desired filename (without path)
$ python downloader.py \ --check-folder ./some_folder \ --pdf-url https://example.com/2_by_kedibone.pdf \ --save-folder ./downloads \ --open
self._pdf_path = target_path return target_path
# ------------------------------------------------------------------ # Public API # ------------------------------------------------------------------ a safe default ``downloaded.pdf`` is used.
class ConditionalPdfDownloader: """ Download a PDF *only* when a pre‑condition about the file system is satisfied.
filename: Desired filename (without path). If omitted, the filename is derived from the URL's last path component. If that component is missing or does not end in ``.pdf``, a safe default ``downloaded.pdf`` is used.
# 1️⃣ Pre‑condition ------------------------------------------------- def _ensure_precondition(self) -> None: """ Raises an informative exception if the folder does not contain exactly ``expected_count`` items. """ items = list(self.check_folder.iterdir()) count = len(items)