def get_azure_bearer_token(resource_url, azure_directory_id, azure_admin_application_id,
                           azure_admin_application_secret):
    """
    Uses OAuth 2.0 to get the bearer token based on the client id and client secret.
    """

    api_url = "https://login.microsoftonline.com/" + azure_directory_id + "/oauth2/token"

    client = {'grant_type': 'client_credentials',
              'client_id': azure_admin_application_id,
              'client_secret': azure_admin_application_secret,
              'resource': resource_url,
              }

    response = requests.post(api_url, data=client)

    if "access_token" in response.json():
        return response.json()["access_token"]
    print("Could not get Bearer token")
    return None