"""Start the CTFast web app, locally or on the Hugging Face Space.
The trained detector is downloaded from the model repo first if it is missing.
"""

import argparse

DEFAULT_PORT = 7860


def main() -> None:
    """Load the detector once and serve the Control Centre page and the API."""
    parser = argparse.ArgumentParser(description=__doc__.splitlines()[0])
    parser.add_argument("--host", default="0.0.0.0")
    parser.add_argument("--port", type=int, default=DEFAULT_PORT)
    parser.add_argument("--device", default="cpu", help="cpu, or cuda for a local GPU")
    args = parser.parse_args()

    import uvicorn

    from ctfast import deploy
    from ctfast.detector import Detector
    from ctfast.web.server import create_app

    deploy.fetch_model(only_missing=True)
    uvicorn.run(create_app(Detector(args.device)), host=args.host, port=args.port)


if __name__ == "__main__":
    main()