feat: update metadata for ads

js/site-config.js

@@ -0,0 +1,8 @@
+window.__SITE_CONFIG__ = {
+  siteUrl: 'https://elcsa.ru',
+  gtmContainerId: '',
+  ga4MeasurementId: '',
+  googleAdsId: '',
+  yandexMetrikaId: '',
+  yandexWebvisor: true,
+};

js/tracking.js

@@ -0,0 +1,84 @@
+function injectGtm(id) {
+  const w = window;
+  w.dataLayer = w.dataLayer || [];
+  w.dataLayer.push({ 'gtm.start': Date.now(), event: 'gtm.js' });
+  const firstScript = document.getElementsByTagName('script')[0];
+  const gtmScript = document.createElement('script');
+  gtmScript.async = true;
+  gtmScript.src = 'https://www.googletagmanager.com/gtm.js?id=' + id;
+  firstScript.parentNode.insertBefore(gtmScript, firstScript);
+  const nos = document.createElement('noscript');
+  const iframe = document.createElement('iframe');
+  iframe.src = 'https://www.googletagmanager.com/ns.html?id=' + id;
+  iframe.height = '0';
+  iframe.width = '0';
+  iframe.setAttribute('style', 'display:none;visibility:hidden');
+  nos.appendChild(iframe);
+  document.body.insertBefore(nos, document.body.firstChild);
+}
+
+
+function injectGtag(ids) {
+  const list = ids.filter(Boolean);
+  if (!list.length) {
+    return;
+  }
+  const s = document.createElement('script');
+  s.async = true;
+  s.src = 'https://www.googletagmanager.com/gtag/js?id=' + list[0];
+  document.head.appendChild(s);
+  window.dataLayer = window.dataLayer || [];
+  function gtag() {
+    window.dataLayer.push(arguments);
+  }
+  window.gtag = gtag;
+  gtag('js', new Date());
+  list.forEach((id) => {
+    gtag('config', id);
+  });
+}
+
+
+function injectYandex(id, webvisor) {
+  if (!id) {
+    return;
+  }
+  (function (m, e, t, r, i, k, a) {
+    m[i] =
+      m[i] ||
+      function () {
+        (m[i].a = m[i].a || []).push(arguments);
+      };
+    m[i].l = 1 * new Date();
+    for (let j = 0; j < document.scripts.length; j += 1) {
+      if (document.scripts[j].src === r) {
+        return;
+      }
+    }
+    k = e.createElement(t);
+    a = e.getElementsByTagName(t)[0];
+    k.async = 1;
+    k.src = r;
+    a.parentNode.insertBefore(k, a);
+  })(window, document, 'script', 'https://mc.yandex.ru/metrika/tag.js', 'ym');
+  window.ym(id, 'init', {
+    clickmap: true,
+    trackLinks: true,
+    accurateTrackBounce: true,
+    webvisor: !!webvisor,
+  });
+}
+
+
+function runTracking() {
+  const c = window.__SITE_CONFIG__ || {};
+  if (c.gtmContainerId) {
+    injectGtm(c.gtmContainerId);
+  } else {
+    injectGtag([c.ga4MeasurementId, c.googleAdsId].filter(Boolean));
+  }
+  injectYandex(c.yandexMetrikaId, c.yandexWebvisor);
+}
+
+
+runTracking();