g HdZddlZddlmZGddejZy)zInterface for base credentials.N)_helperscBeZdZdZdZej dZddZy)_BaseCredentialsaBase class for all credentials. All credentials have a :attr:`token` that is used for authentication and may also optionally set an :attr:`expiry` to indicate when the token will no longer be valid. Most credentials will be :attr:`invalid` until :meth:`refresh` is called. Credentials can do this automatically before the first HTTP request in :meth:`before_request`. Although the token and expiration will change as the credentials are :meth:`refreshed ` and used, credentials should be considered immutable. Various credentials will accept configuration such as private keys, scopes, and other options. These options are not changeable after construction. Some classes will provide mechanisms to copy the credentials with modifications such as :meth:`ScopedCredentials.with_scopes`. Attributes: token (Optional[str]): The bearer token that can be used in HTTP headers to make authenticated requests. cd|_yN)token)selfs z/var/www/html/FastMealFinder_FlaskServer-InitialRelease/venv/lib/python3.12/site-packages/google/auth/_credentials_base.py__init__z_BaseCredentials.__init__.s  ctd)aRefreshes the access token. Args: request (google.auth.transport.Request): The object used to make HTTP requests. Raises: google.auth.exceptions.RefreshError: If the credentials could not be refreshed. zRefresh must be implemented)NotImplementedError)r requests r refreshz_BaseCredentials.refresh1s""?@@r Ncndjtj|xs |j|d<y)zApply the token to the authentication header. Args: headers (Mapping): The HTTP request headers. token (Optional[str]): If specified, overrides the current access token. z Bearer {} authorizationN)formatr from_bytesr)r headersrs r _applyz_BaseCredentials._applyAs0$/#5#5    3 4$  r r) __name__ __module__ __qualname____doc__r abcabstractmethodrrr r rrs-,  A A  r r) metaclass)rr google.authrABCMetarrr r r!s  & 4 4 r