api.py

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"""API for Monzo bound to Home Assistant OAuth."""
 
from aiohttp import ClientSession
from monzopy import AbstractMonzoApi
 
from homeassistant.helpers import config_entry_oauth2_flow
 
 
class AuthenticatedMonzoAPI(AbstractMonzoApi):
    """A Monzo API instance with authentication tied to an OAuth2 based config entry."""
 
    def __init__(
        self,
        websession: ClientSession,
        oauth_session: config_entry_oauth2_flow.OAuth2Session,
    ) -> None:
        """Initialize Monzo auth."""
        super().__init__(websession)
        self._oauth_session_oauth_session = oauth_session
 
    async def async_get_access_token(self) -> str:
        """Return a valid access token."""
        await self._oauth_session_oauth_session.async_ensure_token_valid()
 
        return str(self._oauth_session_oauth_session.token["access_token"])