How to manage auto login with client side authentication?

[confile]

When I use your plugin login button

                <script>
                    function facebookCallback(response) {
                        window.location.href = "${createLink(controller:'facebookAuth', action:'success')}";
                    }
                </script>
                <facebook:loginLink
                    appPermissions="${grailsApplication.config.grails.plugin.facebooksdk.appPermissions}"
                    callback="facebookCallback">
                    Signup with Facebook
                </facebook:loginLink>

it works perfect for login. But what if the user has closed the browser after login (without logout), how can I loggin him based on the facebook cookies with your plugin?

How do you do that?

[benorama]

You could use FB.getLoginStatus() from Facebook Javascript SDK during the initialization.

<facebook:initJS appId="${facebookContext.app.id}">
  // Put here any JS code to be executed after Facebook JS initialization
  <g:if test="${!facebookContext.authenticated}">
    FB.getLoginStatus(function(response) {
      if (response.authResponse) {
        window.location.reload();
      }
    });
  </g:if>
</facebook:initJS>

This will automatically reload the page after autologin if the user is already connected on Facebook.