google oauth id-token, access-token automation

google_oauth_automation.py

import requests
from http.server import BaseHTTPRequestHandler, HTTPServer
from urllib import parse

client_id = ""
client_secret = ""
google_email = ""

def get_token_url():
    url = "https://accounts.google.com/o/oauth2/v2/auth"
    params = {
        "scope": 'https://www.googleapis.com/auth/userinfo.profile',
        "access_type": "offline",
        "include_granted_scopes": "true",
        "redirect_uri": "http://localhost:3000/api/auth/callback/google",
        "client_id": client_id,
        "response_type": "code",
        "login_hint": google_email
    }
    url = url + "?" + parse.urlencode(params)
    return url


class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):

    def request_access_token(self, code):
        token_uri = "https://oauth2.googleapis.com/token"

        r = requests.post(token_uri, data={
            "client_id": client_id,
            "client_secret": client_secret,
            'redirect_uri': 'http://localhost:3000/api/auth/callback/google',
            "grant_type": "authorization_code",
            "code": parse.unquote(code)
        })

        return r.text

    def do_GET(self):
        if self.path.startswith("/api"):
            query = parse.urlparse(self.path).query  # 2.id-token parsing
            query_params = parse.parse_qs(query)  # id-token query paramas

            code = query_params['code'][0]  # 3. get id-token
            print(code)
            print(self.request_access_token(code))

        self.send_response(200)
        self.send_header('Content-type', 'text/plain')
        self.end_headers()


httpd = HTTPServer(('0.0.0.0', 3000), SimpleHTTPRequestHandler)
print(get_token_url())
print(f'Server running on port:{3000}')
httpd.serve_forever()