From c3c26fa4245019eac10f7e92c769f02b98991fba Mon Sep 17 00:00:00 2001
From: Andy Boughton <abought@gmail.com>
Date: Thu, 28 Sep 2023 10:45:01 -0400
Subject: [PATCH] Update Google analytics code to use new GA4 trackers (#118)

The old scripts stopped accepting user data as of July 2023.
---
 src/main/html/webapp/public/index.html | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/src/main/html/webapp/public/index.html b/src/main/html/webapp/public/index.html
index cd688082..c212b78d 100644
--- a/src/main/html/webapp/public/index.html
+++ b/src/main/html/webapp/public/index.html
@@ -26,18 +26,17 @@
     <script src="./dist/bundles/cloudgene/index.js"></script>
 
     <#if google_analytics??>
-      <!-- Google Analytics -->
+      <!-- Google tag (gtag.js) -->
+      <script async src="https://www.googletagmanager.com/gtag/js?id=${google_analytics}"></script>
       <script>
-      (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
-      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-      })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
-
-      ga('create', ' ${google_analytics}', 'auto');
-      ga('send', 'pageview');
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
 
+        // Automatically sends a pageview with specified Tag ID
+        gtag('config', '${google_analytics}');
       </script>
-    	<!-- End Google Analytics -->
+      <!-- End Google Analytics -->
     </#if>
 
   </body>