from __future__ import annotations

from fastapi import FastAPI


def create_app(env_cls, action_model, observation_model) -> FastAPI:
    """Minimal local compatibility layer for this project.

    The upstream package offers a richer OpenEnv integration, but this repo
    only relies on receiving a FastAPI app instance to extend with routes.
    """
    app = FastAPI()
    app.state.env_cls = env_cls
    app.state.action_model = action_model
    app.state.observation_model = observation_model
    return app


def validate() -> None:
    from validate_local import main

    main()