# scripts/make_sample_articles.py
import json
from pathlib import Path

source = Path("data/articles.json")
target = Path("data/samples/articles_10.json")

articles = json.loads(source.read_text())

valid = [
    a
    for a in articles
    if isinstance(a, dict)
    and isinstance(a.get("DOI"), str)
    and a["DOI"]
    and isinstance(a.get("Title"), str)
    and a["Title"]
    and isinstance(a.get("Abstract"), str)
    and isinstance(a.get("Year"), int)
    and not isinstance(a.get("Year"), bool)
]

target.parent.mkdir(parents=True, exist_ok=True)
target.write_text(json.dumps(valid[:10], indent=2), encoding="utf-8")

print(f"Wrote {len(valid[:10])} articles to {target}")