Get access token from discord api via oauth2

oauth2discord.py

from multiprocessing import Process, Queue
from urllib.parse import urlencode
import os
from dotenv import load_dotenv

load_dotenv()


def run_local_app(q: Queue, state: str):
    from flask import Flask, request

    app = Flask(__name__)

    @app.route('/discord/auth')
    def auth():
        code = request.args.get('code')
        verify_state = request.args.get('state')
        if verify_state != state:
            return 'Invalid state!'

        q.put(code)

        return 'You can close this window now.'

    app.run()


def main():
    import secrets
    import time

    state = secrets.token_hex(32)
    params = {
        'client_id': os.environ['DISCORD_CLIENT_ID'],
        'redirect_uri': os.environ['DISCORD_REDIRECT_URI'],
        'response_type': 'code',
        'scope': 'guilds.join',
        'state': state,
    }
    url = 'https://discord.com/api/oauth2/authorize?' + urlencode(params)

    print('*' * 80)
    print('Please visit the following URL to authorize the bot:')
    print(url)
    print('*' * 80)

    print('Starting local server to wait for response...')
    q = Queue()
    proc = Process(target=run_local_app, args=(q, state))
    proc.start()
    code = q.get()

    time.sleep(1)  # give the server some time to respond
    proc.terminate()
    proc.join()

    # do the actual request to get the access token
    import requests
    r = requests.post('https://discord.com/api/oauth2/token', data={
        'client_id': os.environ['DISCORD_CLIENT_ID'],
        'client_secret': os.environ['DISCORD_CLIENT_SECRET'],
        'redirect_uri': os.environ['DISCORD_REDIRECT_URI'],
        'grant_type': 'authorization_code',
        'code': code,
        'scope': 'guilds.join',
    })

    # {
    #   'token_type': 'Bearer',
    #   'access_token': 'xxx',
    #   'expires_in': 604800,
    #   'refresh_token': 'yyy',
    #   'scope': 'guilds.join'
    # }
    data = r.json()

    # now you can do requests to the API with the access token, on behalf of the user
    print(data)


if __name__ == '__main__':
    main()