#!/usr/bin/env python3
"""Cross-block the two lessons the worksheet made ambiguous.

Both packs talk about perpendicular bisectors and perpendicular diagonals, but
about different segments. Without these, "trung trực của AC" (phiếu bài 1) lands
on bài 3.3, which proves AC is the bisector of BD — the exact opposite.
"""

import json
import pathlib

EXTRA = {
    "bai-3-3": ["cua ac", "bai 1"],
    "dinh-doi-canh-doi-duong-cheo": ["vuong goc", "pytago", "chu vi"],
    "tu-giac-loi": ["hinh nao"],
}


def main() -> int:
    path = pathlib.Path(__file__).resolve().parents[1] / "content" / "bai-10-tu-giac" / "pack.json"
    pack = json.loads(path.read_text(encoding="utf-8"))
    for scenario in pack["scenarios"]:
        extra = EXTRA.get(scenario["id"])
        if extra:
            scenario["blockers"] = sorted(set(scenario.get("blockers", []) + extra))
    path.write_text(json.dumps(pack, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")
    print(f"Cập nhật blockers cho {len(EXTRA)} scenario.")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())