"""
Strava OAuth2 backend, docs at:
    https://python-social-auth.readthedocs.io/en/latest/backends/strava.html
"""

from .oauth import BaseOAuth2


class StravaOAuth(BaseOAuth2):
    name = "strava"
    AUTHORIZATION_URL = "https://www.strava.com/oauth/authorize"
    ACCESS_TOKEN_URL = "https://www.strava.com/oauth/token"
    # Strava doesn't check for parameters in redirect_uri and directly appends
    # the auth parameters to it, ending with an URL like:
    # http://example.com/complete/strava?redirect_state=xxx?code=xxx&state=xxx
    # Check issue #259 for details.
    REDIRECT_STATE = False
    REVOKE_TOKEN_URL = "https://www.strava.com/oauth/deauthorize"
    SCOPE_SEPARATOR = ","
    EXTRA_DATA = [
        ("refresh_token", "refresh_token"),
        ("expires_in", "expires"),
    ]

    def get_user_id(self, details, response):
        return response["athlete"]["id"]

    def get_user_details(self, response):
        """Return user details from Strava account"""
        username = response["athlete"].get("username", "")
        fullname, first_name, last_name = self.get_user_names(
            first_name=response["athlete"].get("firstname", ""),
            last_name=response["athlete"].get("lastname", ""),
        )
        return {
            "username": username,
            "fullname": fullname,
            "first_name": first_name,
            "last_name": last_name,
        }

    def user_data(self, access_token, *args, **kwargs):
        """Loads user data from service"""
        return self.get_json(
            "https://www.strava.com/api/v3/athlete",
            params={"access_token": access_token},
        )

    def revoke_token_params(self, token, uid):
        params = super().revoke_token_params(token, uid)
        params["access_token"] = token
        return params
