# Source code for flask_dance.contrib.strava

    from flask import g, request
    from werkzeug.local import LocalProxy

    from flask_dance import __version__ as _flask_dance_version
    from flask_dance.consumer import OAuth2ConsumerBlueprint, OAuth2Session

    __maintainer__ = "Jimmy Hedman <jimmy.hedman@gmail.com>"

    DEFAULT_USER_AGENT = f"Flask-Dance/{_flask_dance_version}"

    class StravaOAuth2Session(OAuth2Session):
        def fetch_token(self, *args, **kwargs):
            # Pass client_id to session so it could trigger Basic Auth
            return super().fetch_token(
                include_client_id=True,
                method="POST",
                code=request.args.get("code"),
                *args,
                **kwargs,
            )

    def make_strava_blueprint(
        client_id=None,
        client_secret=None,
        *,
        scope="read",
        redirect_url=None,
        redirect_to=None,
        login_url=None,
        authorized_url=None,
        session_class=None,
        storage=None,
        user_agent=None,
        rule_kwargs=None,
    ):
        """
        Make a blueprint for authenticating with Strava using OAuth 2. This requires
        a client ID and client secret from Strava. You should either pass them to
        this constructor, or make sure that your Flask application config defines
        them, using the variables :envvar:`STRAVA_OAUTH_CLIENT_ID` and
        :envvar:`STRAVA_OAUTH_CLIENT_SECRET`.

        Args:
            client_id (str): The client ID for your application on Strava.
            client_secret (str): The client secret for your application on Strava
            scope (str, optional): space-separated list of scopes for the OAuth token
                Defaults to ``identity``
            redirect_url (str): the URL to redirect to after the authentication
                dance is complete
            redirect_to (str): if ``redirect_url`` is not defined, the name of the
                view to redirect to after the authentication dance is complete.
                The actual URL will be determined by :func:`flask.url_for`
            login_url (str, optional): the URL path for the ``login`` view.
                Defaults to ``/strava``
            authorized_url (str, optional): the URL path for the ``authorized`` view.
                Defaults to ``/strava/authorized``.
            session_class (class, optional): The class to use for creating a
                Requests session. Defaults to
                :class:`~flask_dance.contrib.strava.StravaOAuth2Session`.
            storage: A token storage class, or an instance of a token storage
                class, to use for this blueprint. Defaults to
                :class:`~flask_dance.consumer.storage.session.SessionStorage`.
            user_agent (str, optional): User agent for the requests to Strava API.
                Defaults to ``Flask-Dance/{{version}}``.
            rule_kwargs (dict, optional): Additional arguments that should be passed when adding
                the login and authorized routes. Defaults to ``None``.

        :rtype: :class:`~flask_dance.consumer.OAuth2ConsumerBlueprint`
        :returns: A :doc:`blueprint <flask:blueprints>` to attach to your Flask app.
        """

        strava_bp = OAuth2ConsumerBlueprint(
            "strava",
            __name__,
            client_id=client_id,
            client_secret=client_secret,
            scope=scope,
            base_url="https://www.strava.com/api/v3",
            authorization_url="https://www.strava.com/api/v3/oauth/authorize",
            token_url="https://www.strava.com/api/v3/oauth/token",
            auto_refresh_url="https://www.strava.com/api/v3/oauth/token",
            redirect_url=redirect_url,
            redirect_to=redirect_to,
            login_url=login_url,
            authorized_url=authorized_url,
            session_class=session_class or StravaOAuth2Session,
            storage=storage,
            rule_kwargs=rule_kwargs,
        )

        strava_bp.from_config["client_id"] = "STRAVA_OAUTH_CLIENT_ID"
        strava_bp.from_config["client_secret"] = "STRAVA_OAUTH_CLIENT_SECRET"

        strava_bp.user_agent = user_agent

        @strava_bp.before_app_request
        def set_applocal_session():
            g.flask_dance_strava = strava_bp.session

        return strava_bp

    strava = LocalProxy(lambda: g.flask_dance_strava)