from collections.abc import Generator

from fastapi import Depends, Request
from sqlalchemy.orm import Session

from app.auth_db import get_auth_db_session
from app.config import Settings, get_settings
from app.db import get_db_session
from app.integrations.homeassistant import HomeAssistantClient
from app.poo_db import get_poo_db_session
from app.services.auth import AuthenticatedSession, get_authenticated_session


def get_app_settings() -> Settings:
    return get_settings()


def get_auth_db() -> Generator[Session, None, None]:
    yield from get_auth_db_session()


def get_db() -> Generator[Session, None, None]:
    yield from get_db_session()


def get_poo_db() -> Generator[Session, None, None]:
    yield from get_poo_db_session()


def get_homeassistant_client() -> HomeAssistantClient:
    return HomeAssistantClient(get_settings())


def get_current_auth_session(
    request: Request,
    session: Session = Depends(get_auth_db),
    settings: Settings = Depends(get_app_settings),
) -> AuthenticatedSession | None:
    raw_token = request.cookies.get(settings.auth_session_cookie_name)
    return get_authenticated_session(session, raw_token=raw_token)