Python Decode Auth0 JWT with JWK Endpoint

token_in_email_out.py

from django.conf import settings
from django.http import HttpRequest
import requests
from joserfc.jwk import KeySet
from joserfc import jwt
from joserfc.jwt import Token
from requests import Response

from project.types import EmailOrNot, OptionalEmail, OptionalToken


def token_in_email_out(request: HttpRequest) -> EmailOrNot:
    token: OptionalToken = request.headers.get("Authorization")
    if not token:
        return None

    res: Response = requests.get(
        f"https://{settings.AUTH0_DOMAIN}/.well-known/jwks.json"
    )
    key_set: KeySet = KeySet.import_key_set(res.json())
    decoded: Token = jwt.decode(token, key_set)
    email: OptionalEmail = decoded.claims.get("email")
    if email:
        return email

    return None