"""Convert HEIC to PNG via pillow-heif."""

from __future__ import annotations

import sys

from pathlib import Path

from PIL import Image

import pillow_heif

pillow_heif.register_heif_opener()

def main() -> int:

    if len(sys.argv) < 2:

        print("usage: heic_convert.py <dir or file>...")

        return 2

    for arg in sys.argv[1:]:

        p = Path(arg)

        files = [p] if p.is_file() else sorted(p.glob("*.HEIC")) + sorted(p.glob("*.heic"))

        for f in files:

            out = f.with_suffix(".png")

            img = Image.open(f)

            img.save(out, "PNG")

            print(f"{f.name} -> {out.name}  ({img.size[0]}x{img.size[1]})")

    return 0

if __name__ == "__main__":

    sys.exit(main())