"""Bootstrap Copernicus DEM tiles for an AOI.

The production implementation should download Copernicus DEM GLO-30 tiles and
write Cloud-Optimized GeoTIFFs into `data/dem`.
"""

from __future__ import annotations

import argparse
from pathlib import Path


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Bootstrap Copernicus DEM for an AOI")
    parser.add_argument("--bbox", required=True, help="AOI bbox: minlon,minlat,maxlon,maxlat")
    parser.add_argument("--output-dir", default="/data/dem", type=Path)
    return parser.parse_args()


def main() -> None:
    args = parse_args()
    args.output_dir.mkdir(parents=True, exist_ok=True)
    raise NotImplementedError(
        "Copernicus DEM download/mosaic/COG conversion is implemented in a later stage. "
        f"Requested bbox={args.bbox}, output_dir={args.output_dir}"
    )


if __name__ == "__main__":
    main()