from pyngrok import ngrok, conf, exception


def connect(token, port, region):
    if token == None:
        token = 'None'
    config = conf.PyngrokConfig(
        auth_token=token, region=region
    )
    try:
        public_url = ngrok.connect(port, pyngrok_config=config, bind_tls=True).public_url
    except exception.PyngrokNgrokError:
        print(f'Invalid ngrok authtoken, ngrok connection aborted.\n'
              f'Your token: {token}, get the right one on https://dashboard.ngrok.com/get-started/your-authtoken')
    else:
        print(f'ngrok connected to localhost:{port}! URL: {public_url}\n'
               'You can use this link after the launch is complete.')