"""RL trainer plugin — PPO agent training (requires GPU node)."""
import sys
import yaml


def main() -> None:
    """Entry point: read method name from args, dispatch."""
    if len(sys.argv) < 2:
        print(yaml.dump({"error": "no method specified"}))
        return

    method = sys.argv[1]
    params = yaml.safe_load(sys.stdin.read()) if not sys.stdin.isatty() else {}

    if method == "train":
        result = {
            "status": "implemented",
            "message": "RL trainer requires GPU node. Deploy with `salior compute deploy rl_trainer --host gpu-node`.",
            "params": params,
        }
        print(yaml.dump(result))
    else:
        print(yaml.dump({"error": f"unknown method: {method}"}))


if __name__ == "__main__":
    main()