$(function() {
    var reachedBottomTracked;
    var scrolledTracked;
    $('nav.global a').click(function(event) {
        if (
            location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') &&
            location.hostname == this.hostname
        ) {
            var target = $(this.hash);
            target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
            if (target.length) {
                event.preventDefault();
                $('html, body').animate(
                    {
                        scrollTop: target.offset().top
                    },
                    1000
                );
                gtag('event', 'navV8_' + this.hash.slice(1));
            }
        }
    });
    $(window).on('scroll', function() {
        if (!scrolledTracked) {
            scrolledTracked = true;
            gtag('event', 'scrolledV8');
        }

        if (
            !reachedBottomTracked &&
            $(window).scrollTop() + $(window).height() === $(document).height()
        ) {
            reachedBottomTracked = true;
            gtag('event', 'reached_bottomV8');
        }
    });
});