import json
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "src"))

from core_hub.app import create_app  # noqa: E402


def main() -> int:
    target = Path(sys.argv[1]) if len(sys.argv) > 1 else None
    payload = json.dumps(create_app().openapi(), indent=2, sort_keys=True) + "\n"
    if target:
        target.parent.mkdir(parents=True, exist_ok=True)
        target.write_text(payload, encoding="utf-8")
    else:
        sys.stdout.write(payload)
    return 0


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