"""FastAPI 入口."""
import argparse
import os

import uvicorn
from app import create_app


def main():
    parser = argparse.ArgumentParser(description="PTZ 360 scan polling system")
    parser.add_argument("--demo", action="store_true", help="Demo mode (no-op currently)")
    parser.add_argument("--host", default=os.environ.get("HOST", "0.0.0.0"))
    parser.add_argument("--port", type=int, default=int(os.environ.get("PORT", 8000)))
    parser.add_argument("--model", default=None, help="Path to detection model")
    parser.add_argument(
        "--model-size", default=None, choices=["n", "s", "m", "l", "x"],
        help="YOLO11 model size",
    )
    parser.add_argument("--no-gpu", action="store_true", help="Disable GPU/NPU")
    args = parser.parse_args()

    # Forward model args to detection config when provided
    if args.model or args.model_size or args.no_gpu:
        from config import detection
        if args.model:
            detection.DETECTION_CONFIG["model_path"] = args.model
        if args.model_size:
            detection.DETECTION_CONFIG["model_size"] = args.model_size
        if args.no_gpu:
            detection.DETECTION_CONFIG["use_gpu"] = False

    app = create_app()
    uvicorn.run(app, host=args.host, port=args.port)


if __name__ == "__main__":
    main()