"""Contract smoke test: denoise the example, check PSNR improves, save the summary."""
from __future__ import annotations

import json
import sys

from PIL import Image

from core.io import APP_TMP_DIR
from core.processing import simulate_full


def main() -> int:
    tif = APP_TMP_DIR / "example.tif"
    if not tif.exists():
        import scripts.make_example as me
        me.main()

    r = simulate_full(str(tif), engine="nlm", strength=1.0)
    rep = r["report"]
    assert r["summary"].ndim == 3 and r["summary"].shape[2] == 3
    assert rep["psnr_denoised_db"] > rep["psnr_noisy_db"], "denoising did not improve PSNR"
    Image.fromarray(r["summary"]).save(APP_TMP_DIR / "smoke_summary.png")
    print("REPORT:", json.dumps(rep))
    return 0


if __name__ == "__main__":
    sys.exit(main())