"""
FastAPI application for the Ampere EV Routing Environment.

Endpoints:
    POST /reset  — Reset the environment for a new episode
    POST /step   — Execute an action
    GET  /state  — Get current environment state
    GET  /schema — Get action/observation schemas

Usage:
    # Development:
    uvicorn server.app:app --reload --host 0.0.0.0 --port 8000

    # Production (HF Spaces):
    uvicorn server.app:app --host 0.0.0.0 --port 7860 --workers 1
"""

import sys
import os

# Ensure the package root is on sys.path so `models` and `server` resolve
# correctly whether the app is launched from the repo root or via Dockerfile.
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from openenv.core.env_server.http_server import create_app

from models import EVAction, EVObservation
from server.ampere_environment import AmpereEnvironment
from fastapi.responses import JSONResponse

app = create_app(
    AmpereEnvironment,
    EVAction,
    EVObservation,
    env_name="ampere",
    max_concurrent_envs=1,
)

@app.get("/")
def root():
    return {"status": "ok"}

@app.get("/health")
def health():
    return JSONResponse({"status": "healthy"})


def main(host: str = "0.0.0.0", port: int = 7860):
    """
    Entry point for direct execution via uv run or python -m.

    This function enables running the server without Docker:
        uv run --project . server
        uv run --project . server --port 8001
        python -m ampere.server.app

    Args:
        host: Host address to bind to (default: "0.0.0.0")
        port: Port number to listen on (default: 8000)

    For production deployments, consider using uvicorn directly with
    multiple workers:
        uvicorn ampere.server.app:app --workers 4
    """
    import uvicorn

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


if __name__ == "__main__":
    main()