"""API for Netatmo bound to HASS OAuth."""

from collections.abc import Iterable
from typing import cast

from aiohttp import ClientSession
import pyatmo

from homeassistant.components import cloud
from homeassistant.helpers import config_entry_oauth2_flow

from .const import API_SCOPES_EXCLUDED_FROM_CLOUD


def get_api_scopes(auth_implementation: str) -> Iterable[str]:
    """Return the Netatmo API scopes based on the auth implementation."""

    if auth_implementation == cloud.DOMAIN:
        return set(
            {
                scope
                for scope in pyatmo.const.ALL_SCOPES
                if scope not in API_SCOPES_EXCLUDED_FROM_CLOUD
            }
        )
    return sorted(pyatmo.const.ALL_SCOPES)


class AsyncConfigEntryNetatmoAuth(pyatmo.AbstractAsyncAuth):
    """Provide Netatmo authentication tied to an OAuth2 based config entry."""

    def __init__(
        self,
        websession: ClientSession,
        oauth_session: config_entry_oauth2_flow.OAuth2Session,
    ) -> None:
        """Initialize the auth."""
        super().__init__(websession)
        self._oauth_session = oauth_session

    async def async_get_access_token(self) -> str:
        """Return a valid access token for Netatmo API."""
        if not self._oauth_session.valid_token:
            await self._oauth_session.async_ensure_token_valid()
        return cast(str, self._oauth_session.token["access_token"])