// http://philpalmieri.com/2009/09/jquery-session-auto-timeout-with-prompt/
(function($) {
    $.fn.timedLogout = function(options) {
        var defaults = {
            inactivity: 1200000, //20 Minutes
            noconfirm: 10000, //10 Seconds
            sessionAlive: 30000, //10 Minutes
            redirect_url: '/js_sandbox/',
            click_reset: true,
            alive_url: '/js_sandbox/',
            logout_url: '/js_sandbox/',
            window_title: 'Auto Logout',
            window_message: 'You are about to be signed out due to inactivity.'
        }

        //##############################
        //## Private Variables
        //##############################
        var opts = $.extend(defaults, options);
        var liveTimeout, confTimeout, sessionTimeout;
        var modal = "<div id='modal_pop'><p>" + opts.window_message + "</p></div>";
        //##############################
        //## Private Functions
        //##############################
        var start_liveTimeout = function() {
            clearTimeout(liveTimeout);
            clearTimeout(confTimeout);
            liveTimeout = setTimeout(logout, opts.inactivity);

            if (opts.sessionAlive) {
                clearTimeout(sessionTimeout);
                sessionTimeout = setTimeout(keep_session, opts.sessionAlive);
            }
        }

        var logout = function() {

            confTimeout = setTimeout(redirect, opts.noconfirm);
            $(modal).dialog({
                bgiframe: true,
                buttons: { "Blijf actief": function() {
                    $(this).dialog('close');
                    stay_logged_in();
                }
                },
                modal: true,
                title: opts.window_title
            });

        }

        var redirect = function() {
            if (opts.logout_url) {
                 $.get(opts.logout_url);
            }
            var e = jQuery("a:contains('Bewaren')");
            if (e == null)
                window.location.href = opts.redirect_url;
            else
                window.location.href = e.attr('href');
        }

        var stay_logged_in = function(el) {
            start_liveTimeout();
            if (opts.alive_url) {
                $.get(opts.alive_url);
            }
        }

        var keep_session = function() {
            var u = opts.alive_url + "?nd=" + new Date().getTime();
            $.get(u);
            clearTimeout(sessionTimeout);
            sessionTimeout = setTimeout(keep_session, opts.sessionAlive);
        }

        //###############################
        //Build & Return the instance of the item as a plugin
        // This is basically your construct.
        //###############################
        return this.each(function() {
            obj = $(this);
            start_liveTimeout();
            if (opts.click_reset) {
                $(document).bind('click', start_liveTimeout);
            }
            if (opts.sessionAlive) {
                keep_session();
            }
        });

    };
})(jQuery);