from __future__ import annotations

from typing import Any

from fastapi import FastAPI, Request

from app.ha.exceptions import HaAuthError, HaClientError, HaHttpError


def register_exception_handlers(app: FastAPI) -> None:
    @app.exception_handler(HaClientError)
    async def handle_ha_client_error(request: Request, exc: HaClientError) -> Any:  # pragma: no cover - einfacher Wrapper
        if isinstance(exc, HaAuthError):
            return {"detail": "Ungültige Authentifizierung gegenüber Home Assistant."}
        if isinstance(exc, HaHttpError):
            return {
                "detail": "Home Assistant meldet einen Fehler.",
                "upstream_status": exc.status_code,
            }
        return {"detail": str(exc)}