"""
Bungie OAuth2 backend
"""

from social_core.backends.oauth import BaseOAuth2


class BungieOAuth2(BaseOAuth2):
    name = "bungie"
    ID_KEY = "membership_id"
    AUTHORIZATION_URL = "https://www.bungie.net/en/oauth/authorize/"
    ACCESS_TOKEN_URL = "https://www.bungie.net/platform/app/oauth/token/"
    REFRESH_TOKEN_URL = "https://www.bungie.net/platform/app/oauth/token/"
    ACCESS_TOKEN_METHOD = "POST"
    REDIRECT_STATE = False
    EXTRA_DATA = [
        ("refresh_token", "refresh_token", True),
        ("access_token", "access_token", True),
        ("expires_in", "expires"),
        ("membership_id", "membership_id"),
        ("refresh_expires_in", "refresh_expires_in"),
    ]

    def auth_html(self):
        """Abstract Method Inclusion"""
        pass

    def auth_headers(self):
        """Adds X-API-KEY and Origin"""
        return {
            "X-API-KEY": self.setting("API_KEY"),
            "Content-Type": "application/x-www-form-urlencoded",
            "Origin": self.setting("ORIGIN"),
            "Accept": "application/json",
        }

    def make_bungie_request(self, url, access_token, kwargs):
        """Helper function to get username data keyed off displayName"""
        headers = self.auth_headers()
        headers["Authorization"] = "Bearer " + access_token
        return self.get_json(url, headers=headers)

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

    def do_auth(self, access_token, *args, **kwargs):
        """Finish the auth process once the access_token was retrieved"""
        data = self.user_data(access_token, *args, **kwargs)
        response = kwargs.get("response") or {}
        response.update(data or {})
        if "access_token" not in response:
            response["Response"]["access_token"]["value"] = access_token
        kwargs.update({"response": response, "backend": self})
        return self.strategy.authenticate(*args, **kwargs)

    def user_data(self, access_token, *args, **kwargs):
        """Grab user profile information from Bunige"""
        membership_id = kwargs["response"]["membership_id"]
        url = "https://www.bungie.net/Platform/User/GetBungieNetUser/"
        response = self.make_bungie_request(url, access_token, kwargs)
        username = response["Response"]["user"]["displayName"]
        return {"username": username, "uid": membership_id}

    def get_user_details(self, response, *args, **kwargs):
        """Return user details from Bungie account"""
        username = response["username"]
        return {
            "first_name": username,
            "username": username,
            "uid": response["uid"],
        }