#!/usr/bin/env python3
"""Package the offline cover zips into a single distributable bundle.

Outputs ``psppt-covers.zip`` containing ``libretro-covers.zip`` and
``openvgdb-covers.zip``. Attach it to the Gitea ``covers`` release; the app
downloads it on first run when the user opts in.

Usage:  python3 scripts/make-covers-bundle.py [out-path]
"""
import sys
import zipfile
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
COVERS = ROOT / "data" / "covers"
INNER = ("libretro-covers.zip", "openvgdb-covers.zip")


def main(argv):
    out = Path(argv[1]) if len(argv) > 1 else ROOT / "psppt-covers.zip"
    missing = [n for n in INNER if not (COVERS / n).exists()]
    if missing:
        print(f"missing: {', '.join(missing)} in {COVERS}", file=sys.stderr)
        return 2
    # Inner zips are already compressed; store them to avoid recompressing.
    with zipfile.ZipFile(out, "w", zipfile.ZIP_STORED) as z:
        for n in INNER:
            print(f"adding {n} …")
            z.write(COVERS / n, arcname=n)
    size = out.stat().st_size / (1 << 20)
    print(f"wrote {out} ({size:.0f} MB)")
    return 0


if __name__ == "__main__":
    raise SystemExit(main(sys.argv))