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path: root/forum_modules/facebookauth/templates/button.html
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<script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php/en_US" type="text/javascript"></script>
<script type="text/javascript">
    var FB_API_KEY = "{{ provider.API_KEY }}";
    var FB_CHANNEL_PATH = "{% url  xd_receiver %}";

    FB.init(FB_API_KEY, FB_CHANNEL_PATH, {permsToRequestOnConnect : "email"});

    function FB_ConnectPostAuthorization() {
        if ($('#validate_email').attr('checked')) {
            FB_RequireFeatures(["Api"], function(){
                var api = FB.Facebook.apiClient;
                var fb_uid = api.get_session().uid;

                $.post('{% url  facebook_user_is_registered %}', {'fb_uid': fb_uid}, function(response) {
                    if (response != "yes") {
                        api.users_hasAppPermission("email", function(result) {
                            if (!result) {
                                FB.Connect.showPermissionDialog("email", redirect_to_done_page);
                            } else {
                                redirect_to_done_page()
                            }
                        })
                    } else {
                        redirect_to_done_page()
                    }
                });
            });
        } else {
            redirect_to_done_page();
        }
    }

    function redirect_to_done_page() {
        window.location = "{% url auth_provider_done provider=provider.id %}";
    }

</script>
<fb:login-button v="2" size="medium" onlogin="FB_ConnectPostAuthorization()">Facebook</fb:login-button>