"""
Vend  OAuth2 backend:
"""

from .oauth import BaseOAuth2


class VendOAuth2(BaseOAuth2):
    name = "vend"
    AUTHORIZATION_URL = "https://secure.vendhq.com/connect"
    ACCESS_TOKEN_URL = "https://{0}.vendhq.com/api/1.0/token"
    ACCESS_TOKEN_METHOD = "POST"
    REDIRECT_STATE = False
    EXTRA_DATA = [
        ("refresh_token", "refresh_token"),
        ("domain_prefix", "domain_prefix"),
    ]

    def access_token_url(self):
        return self.ACCESS_TOKEN_URL.format(self.data["domain_prefix"])

    def get_user_details(self, response):
        email = response["email"]
        username = response.get("username") or email.split("@", 1)[0]
        return {
            "username": username,
            "email": email,
            "fullname": "",
            "first_name": "",
            "last_name": "",
        }

    def user_data(self, access_token, *args, **kwargs):
        """Loads user data from service"""
        prefix = kwargs["response"]["domain_prefix"]
        url = f"https://{prefix}.vendhq.com/api/users"
        data = self.get_json(url, headers={"Authorization": f"Bearer {access_token}"})
        return data["users"][0] if data.get("users") else {}