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

from .oauth import BaseOAuth2


class AmazonOAuth2(BaseOAuth2):
    name = "amazon"
    ID_KEY = "user_id"
    AUTHORIZATION_URL = "https://www.amazon.com/ap/oa"
    ACCESS_TOKEN_URL = "https://api.amazon.com/auth/o2/token"
    DEFAULT_SCOPE = ["profile"]
    REDIRECT_STATE = False
    ACCESS_TOKEN_METHOD = "POST"
    EXTRA_DATA = [
        ("refresh_token", "refresh_token", True),
        ("user_id", "user_id"),
        ("postal_code", "postal_code"),
    ]

    def get_user_details(self, response):
        """Return user details from amazon account"""
        name = response.get("name") or ""
        fullname, first_name, last_name = self.get_user_names(name)
        return {
            "username": name,
            "email": response.get("email"),
            "fullname": fullname,
            "first_name": first_name,
            "last_name": last_name,
        }

    def user_data(self, access_token, *args, **kwargs):
        """Grab user profile information from amazon."""
        response = self.get_json(
            "https://api.amazon.com/user/profile", params={"access_token": access_token}
        )
        if "Profile" in response:
            response = {
                "user_id": response["Profile"]["CustomerId"],
                "name": response["Profile"]["Name"],
                "email": response["Profile"]["PrimaryEmail"],
            }
        return response