links/app.js

/* global umami */

document.addEventListener('click', getFollows);

function getFollows(evt) {
    const el = evt.target;
    if (el.tagName.toLowerCase() !== 'a') {
        return true;
    }

    const name = el.dataset.name;

    if (!name) {
        return true;
    }

    const url = el.href;
    if (!url) {
        return true;
    }

    if (!window.umami) {
        return true;
    }

    const umProm = umami.trackEvent('visit', { type: 'click', site: name });

    if (!umProm) {
        return true;
    }

    if (!el.target || el.target.match(/^_(self|parent|top)$/i)) {
        // If we're not opening in a new tab, then try to send event before navigating away
        // Don't wait too long though (half a second, at most)
        evt.preventDefault();
        umProm.then(() => location.href = url).catch(() => location.href = url);
        setTimeout(() => location.href = url, 500);
    }
}