mirror of
https://github.com/home-assistant/core
synced 2024-08-31 05:57:13 +02:00
57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
"""API for Google Nest Device Access bound to Home Assistant OAuth."""
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import datetime
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from aiohttp import ClientSession
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from google.oauth2.credentials import Credentials
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from google_nest_sdm.auth import AbstractAuth
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from homeassistant.helpers import config_entry_oauth2_flow
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from .const import API_URL, OAUTH2_TOKEN, SDM_SCOPES
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# See https://developers.google.com/nest/device-access/registration
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class AsyncConfigEntryAuth(AbstractAuth):
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"""Provide Google Nest Device Access authentication tied to an OAuth2 based config entry."""
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def __init__(
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self,
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websession: ClientSession,
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oauth_session: config_entry_oauth2_flow.OAuth2Session,
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client_id: str,
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client_secret: str,
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):
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"""Initialize Google Nest Device Access auth."""
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super().__init__(websession, API_URL)
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self._oauth_session = oauth_session
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self._client_id = client_id
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self._client_secret = client_secret
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async def async_get_access_token(self):
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"""Return a valid access token for SDM API."""
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if not self._oauth_session.valid_token:
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await self._oauth_session.async_ensure_token_valid()
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return self._oauth_session.token["access_token"]
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async def async_get_creds(self):
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"""Return an OAuth credential for Pub/Sub Subscriber."""
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# We don't have a way for Home Assistant to refresh creds on behalf
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# of the google pub/sub subscriber. Instead, build a full
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# Credentials object with enough information for the subscriber to
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# handle this on its own. We purposely don't refresh the token here
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# even when it is expired to fully hand off this responsibility and
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# know it is working at startup (then if not, fail loudly).
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token = self._oauth_session.token
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creds = Credentials(
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token=token["access_token"],
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refresh_token=token["refresh_token"],
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token_uri=OAUTH2_TOKEN,
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client_id=self._client_id,
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client_secret=self._client_secret,
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scopes=SDM_SCOPES,
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)
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creds.expiry = datetime.datetime.fromtimestamp(token["expires_at"])
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return creds
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