from __future__ import annotations
import argparse
import os
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent / "acea"
if not ROOT.exists():
    raise FileNotFoundError(f"Cannot find ACEA project directory at {ROOT}")

sys.path.insert(0, str(ROOT))
os.chdir(ROOT)


def run_backend(host: str = "0.0.0.0", port: int = 7860, reload: bool = False) -> None:
    """Run the ACEA FastAPI backend."""
    import uvicorn

    uvicorn.run("backend.main:app", host=host, port=port, reload=reload)


def run_inference(groq_key: str | None = None) -> None:
    """Run the ACEA inference script."""
    if groq_key:
        os.environ["GROQ_API_KEY"] = groq_key

    import inference

    if not hasattr(inference, "main"):
        raise RuntimeError("inference.py is missing a main() function")

    inference.main()


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Launch the ACEA app services.")
    parser.add_argument(
        "command",
        nargs="?",
        choices=["backend", "inference"],
        default="backend",
        help="Which service to run: backend or inference.",
    )
    parser.add_argument("--host", default="0.0.0.0", help="Backend host address.")
    parser.add_argument("--port", type=int, default=7860, help="Backend port.")
    parser.add_argument("--reload", action="store_true", help="Enable backend reload mode.")
    parser.add_argument("--groq-key", help="Optional Groq API key for inference.")
    return parser.parse_args()


if __name__ == "__main__":
    args = parse_args()
    if args.command == "backend":
        run_backend(host=args.host, port=args.port, reload=args.reload)
    elif args.command == "inference":
        run_inference(groq_key=args.groq_key)