How to integrate Login using Facebook on our AEM based webiste login page

Hi, we have our website based on AEM 6.4, On the login page of the website along with normal Login flow we need to provide "Login using Facebook" as well. Have tried it creating a facebook developer app for login and adding its App ID and secret ID in the cloud configurations for facebook , but it is not working as expected. Can some one help us by providing some documentation link to follow? On helpex only social login for communities website is documented.