docs: fix google analytics

Author: JobaDiniz

docs/_assets/gtag.js

@@ -0,0 +1,72 @@
+/* eslint-disable no-console */
+// From ./ga.js
+
+function appendScript(id) {
+    const script = document.createElement('script');
+    script.async = true;
+    script.src = 'https://www.googletagmanager.com/gtag/js?id=' + id;
+    document.body.appendChild(script);
+  }
+  
+  // global site tag instance initialized
+  function initGlobalSiteTag(id) {
+    appendScript(id);
+  
+    window.dataLayer = window.dataLayer || [];
+    window.gtag =
+      window.gtag ||
+      function () {
+        window.dataLayer.push(arguments);
+      };
+  
+    window.gtag('js', new Date());
+    window.gtag('config', id);
+  }
+  
+  // add additional products to your tag
+  // https://developers.google.com/tag-platform/gtagjs/install
+  function initAdditionalTag(id) {
+    window.gtag('config', id);
+  }
+  
+  function init(ids) {
+    if (Array.isArray(ids)) {
+      // set the first id to be a global site tag
+      initGlobalSiteTag(ids[0]);
+  
+      // the rest ids
+      ids.forEach((id, index) => {
+        if (index > 0) {
+          initAdditionalTag(id);
+        }
+      });
+    } else {
+      initGlobalSiteTag(ids);
+    }
+  }
+  
+  function collect() {
+    if (!window.gtag) {
+      init($docsify.gtag);
+    }
+  
+    // usage: https://developers.google.com/analytics/devguides/collection/gtagjs/pages
+    window.gtag('event', 'page_view', {
+      /* eslint-disable camelcase */
+      page_title: document.title,
+      page_location: location.href,
+      page_path: location.pathname,
+      /* eslint-disable camelcase */
+    });
+  }
+  
+  const install = function (hook) {
+    if (!$docsify.gtag) {
+      console.error('[Docsify] gtag is required.');
+      return;
+    }
+  
+    hook.beforeEach(collect);
+  };
+  
+  $docsify.plugins = [].concat(install, $docsify.plugins);

docs/index.html

@@ -20,15 +20,14 @@
       loadSidebar: true,
       search: 'auto',
       themeColor: '#E57A44',
-      ga: 'G-4W227SRJTC'
+      gtag: 'G-4W227SRJTC'
     }
   </script>
   <!-- Docsify v4 -->
   <script src="//cdn.jsdelivr.net/npm/docsify@4"></script>
   <script src="//cdn.jsdelivr.net/npm/docsify-copy-code/dist/docsify-copy-code.min.js"></script>
   <script src="//cdn.jsdelivr.net/npm/[email protected]/components/prism-json.min.js"></script>
-  <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/ga.min.js"></script>
+  <script src="_assets/gtag.js"></script>
   <script src="_assets/prism-rpa.js"></script>
-  <!--<script src="//cdn.jsdelivr.net/npm/docsify-darklight-theme@latest/dist/index.min.js" type="text/javascript"></script>-->
 </body>
 </html>