#!/usr/bin/env python3
"""P40 evidence: NEAREST 1x->2x close-up of the Wu Peng boat at a doorway cluster.

Takes the real 1280x720 game frames captured by the `LV_P40_SHOT=1` hook and
crops the boat region, upscaling exactly 2x with NEAREST so pixel edges stay
sharp (no mixed colours). Deterministic: fixed crop box, pure function of the
input PNG, so running twice yields byte-identical output.

Usage:
    python3 scripts/make-p40-closeups.py <record-dir> <out-dir>
"""

import sys
from pathlib import Path

from PIL import Image

# (source frame, crop box x0,y0,x1,y1, output name)
CROPS = [
    ("p40-boat.png", (528, 288, 720, 432), "p40-boat-closeup-2x.png"),
]


def main(argv):
    if len(argv) != 3:
        sys.stderr.write(__doc__)
        return 2
    record_dir = Path(argv[1])
    out_dir = Path(argv[2])
    out_dir.mkdir(parents=True, exist_ok=True)
    for source_name, box, out_name in CROPS:
        source = Image.open(record_dir / source_name).convert("RGBA")
        crop = source.crop(box)
        doubled = crop.resize((crop.width * 2, crop.height * 2), Image.NEAREST)
        doubled.save(out_dir / out_name)
        print(f"ok {out_name} {doubled.width}x{doubled.height} from {source_name} box={box}")
    return 0


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