from .oauth import BaseOAuth2


class NaverOAuth2(BaseOAuth2):
    """Naver OAuth authentication backend"""

    name = "naver"
    AUTHORIZATION_URL = "https://nid.naver.com/oauth2.0/authorize"
    ACCESS_TOKEN_URL = "https://nid.naver.com/oauth2.0/token"
    EXTRA_DATA = [
        ("id", "id"),
    ]

    def get_user_id(self, details, response):
        return response.get("id")

    def get_user_details(self, response):
        """Return user details from Naver account"""
        return {
            "username": response.get("username"),
            "email": response.get("email"),
            "fullname": response.get("username"),
        }

    def user_data(self, access_token, *args, **kwargs):
        """Loads user data from service"""
        response = self.request(
            "https://openapi.naver.com/v1/nid/me",
            headers={
                "Authorization": f"Bearer {access_token}",
                "Content_Type": "text/json",
            },
        )

        data = response.json()

        return {
            "id": self._fetch(data, "id"),
            "email": self._fetch(data, "email"),
            "username": self._fetch(data, "name"),
            "nickname": self._fetch(data, "nickname"),
            "gender": self._fetch(data, "gender"),
            "age": self._fetch(data, "age"),
            "birthday": self._fetch(data, "birthday"),
            "profile_image": self._fetch(data, "profile_image"),
        }

    def auth_headers(self):
        client_id, client_secret = self.get_key_and_secret()
        return {
            "grant_type": "authorization_code",
            "code": self.data.get("code"),
            "client_id": client_id,
            "client_secret": client_secret,
        }

    def _fetch(self, data, key):
        try:
            return data["response"][key]
        except (KeyError, TypeError):
            return ""
