From 8b78d5fa3dda6ed2990fef6c011afa11432b4918 Mon Sep 17 00:00:00 2001
From: Olivier <codol.olivier@gmail.com>
Date: Sun, 7 Aug 2022 18:36:45 -0400
Subject: [PATCH] Updated tag content to match new GA instructions

---
 sphinxcontrib/googleanalytics.py | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/sphinxcontrib/googleanalytics.py b/sphinxcontrib/googleanalytics.py
index a223c66..1863e9e 100644
--- a/sphinxcontrib/googleanalytics.py
+++ b/sphinxcontrib/googleanalytics.py
@@ -3,29 +3,31 @@
 
 from sphinx.errors import ExtensionError
 
+
 def add_ga_javascript(app, pagename, templatename, context, doctree):
     if not app.config.googleanalytics_enabled:
         return
 
     metatags = context.get('metatags', '')
-    metatags += """<script type="text/javascript">
-
-      var _gaq = _gaq || [];
-      _gaq.push(['_setAccount', '%s']);
-      _gaq.push(['_trackPageview']);
-
-      (function() {
-        var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
-        ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
-        var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
-      })();
-    </script>""" % app.config.googleanalytics_id
+    metatags += """
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=%s"></script>""" % app.config.googleanalytics_id
+    metatags += """
+    <script>
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
+        gtag('config', '%s');
+    </script>
+    """ % app.config.googleanalytics_id
     context['metatags'] = metatags
 
+
 def check_config(app):
     if not app.config.googleanalytics_id:
         raise ExtensionError("'googleanalytics_id' config value must be set for ga statistics to function properly.")
 
+
 def setup(app):
     app.add_config_value('googleanalytics_id', '', 'html')
     app.add_config_value('googleanalytics_enabled', True, 'html')