import { doNotTrack, hook } from '../lib/web'; import { removeTrailingSlash } from '../lib/url'; (window => { const { screen: { width, height }, navigator: { language }, location: { hostname, pathname, search }, sessionStorage, document, history, } = window; const script = document.querySelector('script[data-website-id]'); const attr = key => script && script.getAttribute(key); const website = attr('data-website-id'); const hostUrl = attr('data-host-url'); const autoTrack = attr('data-auto-track') !== 'false'; const dnt = attr('data-do-not-track'); const useCache = attr('data-cache'); if (!script || (dnt && doNotTrack())) return; const root = hostUrl ? removeTrailingSlash(hostUrl) : new URL(script.src).href.split('/').slice(0, -1).join('/'); const screen = `${width}x${height}`; const listeners = []; let currentUrl = `${pathname}${search}`; let currentRef = document.referrer; /* Collect metrics */ const post = (url, data, callback) => { const req = new XMLHttpRequest(); req.open('POST', url, true); req.setRequestHeader('Content-Type', 'application/json'); req.onreadystatechange = () => { if (req.readyState === 4) { callback && callback(req.response); } }; req.send(JSON.stringify(data)); }; const collect = (type, params, uuid) => { const key = 'umami.cache'; const payload = { website: uuid, hostname, screen, language, cache: useCache && sessionStorage.getItem(key), }; if (params) { Object.keys(params).forEach(key => { payload[key] = params[key]; }); } return post( `${root}/api/collect`, { type, payload, }, res => useCache && sessionStorage.setItem(key, res), ); }; const trackView = (url = currentUrl, referrer = currentRef, uuid = website) => collect( 'pageview', { url, referrer, }, uuid, ); const trackEvent = (event_value, event_type = 'custom', url = currentUrl, uuid = website) => collect( 'event', { event_type, event_value, url, }, uuid, ); /* Handle events */ const addEvents = () => { document.querySelectorAll("[class*='umami--']").forEach(element => { element.className.split(' ').forEach(className => { if (/^umami--([a-z]+)--([a-z0-9_]+[a-z0-9-_]+)$/.test(className)) { const [, type, value] = className.split('--'); const listener = () => trackEvent(value, type); listeners.push([element, type, listener]); element.addEventListener(type, listener, true); } }); }); }; const removeEvents = () => { listeners.forEach(([element, type, listener]) => { element && element.removeEventListener(type, listener, true); }); listeners.length = 0; }; /* Handle history changes */ const handlePush = (state, title, url) => { removeEvents(); currentRef = currentUrl; const newUrl = url.toString(); if (newUrl.substring(0, 4) === 'http') { const { pathname, search } = new URL(newUrl); currentUrl = `${pathname}${search}`; } else { currentUrl = newUrl; } trackView(currentUrl, currentRef); setTimeout(addEvents, 300); }; /* Global */ if (!window.umami) { const umami = event_value => trackEvent(event_value); umami.trackView = trackView; umami.trackEvent = trackEvent; window.umami = umami; } /* Start */ if (autoTrack) { history.pushState = hook(history, 'pushState', handlePush); history.replaceState = hook(history, 'replaceState', handlePush); trackView(currentUrl, currentRef); addEvents(); } })(window);