Custom login redirect is user is not logged in for WP OAuth Server

Custom login redirect

function wo_before_authorize_function_login_redirect( $request ){

	// Check if the user is logged in or not
	if(!is_user_logged_in()){
		wp_redirect( 'http://your-custom-login.com/login' );
		exit;
	}

	// Else do nothing and let the server handle the request
}
add_action('wo_before_authorize_method', 'wo_before_authorize_function_login_redirect');