"""Launch a built executable headless, let it start up, and check it found ffmpeg.

    python scripts/smoke_test.py dist/package/FFmpegWrapper/FFmpegWrapper[.exe] [shot.png]

Exits non-zero if the app crashes, hangs, or reports that ffmpeg is missing.
"""

import os
import subprocess
import sys
from pathlib import Path


def main() -> None:
    exe = Path(sys.argv[1]).resolve()
    shot = Path(sys.argv[2] if len(sys.argv) > 2 else "smoke-test.png").resolve()
    shot.unlink(missing_ok=True)
    env = dict(os.environ, QT_QPA_PLATFORM="offscreen", FFWRAP_SMOKE_TEST=str(shot))
    res = subprocess.run([str(exe)], env=env, timeout=180)
    if res.returncode != 0 or not shot.is_file():
        sys.exit(f"Smoke test failed (exit code {res.returncode}, screenshot {'ok' if shot.is_file() else 'missing'})")
    print(f"Smoke test passed; screenshot saved to {shot}")


if __name__ == "__main__":
    main()