"""Download Output Areas (December 2021) Boundaries EW BGC (V2).

Generalised clipped (20m) boundary polygons for 2021 Census Output Areas
covering England and Wales.

Source: https://open-geography-portalx-ons.hub.arcgis.com/datasets/ons::output-areas-december-2021-boundaries-ew-bgc-v2
License: Open Government Licence v3.0
"""

import argparse
from pathlib import Path

from pipeline.utils import download

URL = "https://open-geography-portalx-ons.hub.arcgis.com/api/download/v1/items/6beafcfd9b9c4c9993a06b6b199d7e6d/geoPackage?layers=0"


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Download OA 2021 boundary polygons (England & Wales)"
    )
    parser.add_argument(
        "--output",
        type=Path,
        required=True,
        help="Output GeoPackage file path",
    )
    args = parser.parse_args()

    args.output.parent.mkdir(parents=True, exist_ok=True)
    download(URL, args.output, timeout=600)
    print(f"Saved to {args.output}")


if __name__ == "__main__":
    main()