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

from ..exceptions import AuthCanceled, AuthUnknownError
from ..utils import handle_http_errors
from .oauth import BaseOAuth2


class JawboneOAuth2(BaseOAuth2):
    name = "jawbone"
    AUTHORIZATION_URL = "https://jawbone.com/auth/oauth2/auth"
    ACCESS_TOKEN_URL = "https://jawbone.com/auth/oauth2/token"
    SCOPE_SEPARATOR = " "
    REDIRECT_STATE = False

    def get_user_id(self, details, response):
        return response["data"]["xid"]

    def get_user_details(self, response):
        """Return user details from Jawbone account"""
        data = response["data"]
        fullname, first_name, last_name = self.get_user_names(
            first_name=data.get("first", ""), last_name=data.get("last", "")
        )
        return {
            "username": first_name + " " + last_name,
            "fullname": fullname,
            "first_name": first_name,
            "last_name": last_name,
            "dob": data.get("dob", ""),
            "gender": data.get("gender", ""),
            "height": data.get("height", ""),
            "weight": data.get("weight", ""),
        }

    def user_data(self, access_token, *args, **kwargs):
        """Loads user data from service"""
        return self.get_json(
            "https://jawbone.com/nudge/api/users/@me",
            headers={"Authorization": "Bearer " + access_token},
        )

    def process_error(self, data):
        error = data.get("error")
        if error:
            if error == "access_denied":
                raise AuthCanceled(self)
            raise AuthUnknownError(self, f"Jawbone error was {error}")
        return super().process_error(data)

    def auth_complete_params(self, state=None):
        client_id, client_secret = self.get_key_and_secret()
        return {
            "grant_type": "authorization_code",  # request auth code
            "code": self.data.get("code", ""),  # server response code
            "client_id": client_id,
            "client_secret": client_secret,
        }

    @handle_http_errors
    def auth_complete(self, *args, **kwargs):
        """Completes login process, must return user instance"""
        self.process_error(self.data)
        response = self.request_access_token(
            self.ACCESS_TOKEN_URL,
            params=self.auth_complete_params(self.validate_state()),
            headers=self.auth_headers(),
            method=self.ACCESS_TOKEN_METHOD,
        )
        self.process_error(response)
        return self.do_auth(
            response["access_token"], response=response, *args, **kwargs
        )