"""Contract smoke test: make the example video, run the fast engine, save outputs."""
from __future__ import annotations

import json
import sys

import numpy as np
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="fast", fps=15.0, px_per_mm=4.0)
    assert r["summary"].ndim == 3 and r["summary"].shape[2] == 3
    assert r["report"]["n_flies"] > 0, "no flies tracked"
    Image.fromarray(r["summary"]).save(APP_TMP_DIR / "smoke_summary.png")
    print("REPORT:", json.dumps({k: v for k, v in r["report"].items() if k != "per_fly"}))
    print("PER_FLY[0]:", json.dumps(r["report"]["per_fly"][0]))
    return 0


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