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

from ..utils import handle_http_errors
from .base import BaseAuth


class PocketAuth(BaseAuth):
    name = "pocket"
    AUTHORIZATION_URL = "https://getpocket.com/auth/authorize"
    ACCESS_TOKEN_URL = "https://getpocket.com/v3/oauth/authorize"
    REQUEST_TOKEN_URL = "https://getpocket.com/v3/oauth/request"
    ID_KEY = "username"

    def get_json(self, url, *args, **kwargs):
        headers = {"X-Accept": "application/json"}
        kwargs.update({"method": "POST", "headers": headers})
        return super().get_json(url, *args, **kwargs)

    def get_user_details(self, response):
        return {"username": response["username"]}

    def extra_data(self, user, uid, response, details=None, *args, **kwargs):
        return response

    def auth_url(self):
        data = {
            "consumer_key": self.setting("KEY"),
            "redirect_uri": self.redirect_uri,
        }
        token = self.get_json(self.REQUEST_TOKEN_URL, data=data)["code"]
        self.strategy.session_set("pocket_request_token", token)
        bits = (self.AUTHORIZATION_URL, token, self.redirect_uri)
        return "%s?request_token=%s&redirect_uri=%s" % bits

    @handle_http_errors
    def auth_complete(self, *args, **kwargs):
        data = {
            "consumer_key": self.setting("KEY"),
            "code": self.strategy.session_get("pocket_request_token"),
        }
        response = self.get_json(self.ACCESS_TOKEN_URL, data=data)
        kwargs.update({"response": response, "backend": self})
        return self.strategy.authenticate(*args, **kwargs)