import tarfile
from pathlib import Path

script_dir = Path(__file__).resolve().parent
scraped_files_root = "questions"

def extract_articles() -> Path:
    articles = script_dir / scraped_files_root
    if not articles.is_dir():
        articles_archive = script_dir / f"{scraped_files_root}.tar.xz"
        if not articles_archive.is_file():
            raise RuntimeError(f"{scraped_files_root} directory / {scraped_files_root}.tar.xz archive not present in cwd")
        with tarfile.open(articles_archive, "r:*") as tar:
            tar.extractall()
        articles = script_dir / scraped_files_root
        if not articles.is_dir():
            raise RuntimeError(f"tarfile extraction failed to produce {scraped_files_root} directory")
    return articles