From cf45bc041258cd2696bb1b9a48f0631f9cf20420 Mon Sep 17 00:00:00 2001
From: Christian Cardone <51024388+Christian-Cardone@users.noreply.github.com>
Date: Tue, 15 Dec 2020 10:09:05 +0000
Subject: [PATCH] Add Google Global Site Tags configuration for new Google
 Analytics 4

This addition enables users to set their Google Measurement ID into the variable GOOGLE_GLOBAL_SITE_TAG in pelicanconf so that they can track analytics using GA 4 Closes #256 (#257)
---
 docs/pelicanconf.py         |  4 ++++
 templates/base.html         |  4 ++++
 templates/partial/ggst.html | 10 ++++++++++
 3 files changed, 18 insertions(+)
 create mode 100644 templates/partial/ggst.html

diff --git a/docs/pelicanconf.py b/docs/pelicanconf.py
index e6055b4..30c9624 100644
--- a/docs/pelicanconf.py
+++ b/docs/pelicanconf.py
@@ -77,3 +77,7 @@ THEME_COLOR_AUTO_DETECT_BROWSER_PREFERENCE = True
 THEME_COLOR_ENABLE_USER_OVERRIDE = True
 
 USE_LESS = True
+
+# GOOGLE ANALYTICS
+# For Google Analytics 4 use. Note that for old Google Analytics ('UA-XXXXX') the GOOGLE_ANALYTICS variable is included in publishconfig.py
+# GOOGLE_GLOBAL_SITE_TAG = 'G-XXXXX'
diff --git a/templates/base.html b/templates/base.html
index 9c1f3a2..3067590 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -102,6 +102,10 @@
   {% if GOOGLE_ANALYTICS %}
     {% include "partial/ga.html" %}
   {% endif %}
+  
+  {% if GOOGLE_GLOBAL_SITE_TAG %}
+    {% include "partial/ggst.html" %}
+  {% endif %}
 
   {% if BROWSER_COLOR %}
     <!-- Chrome, Firefox OS and Opera -->
diff --git a/templates/partial/ggst.html b/templates/partial/ggst.html
new file mode 100644
index 0000000..bac7d3a
--- /dev/null
+++ b/templates/partial/ggst.html
@@ -0,0 +1,10 @@
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={{ GOOGLE_GLOBAL_SITE_TAG }}"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', '{{ GOOGLE_GLOBAL_SITE_TAG }}');
+</script>
+<!-- End of Global site tag (gtag.js) - Google Analytics -->
\ No newline at end of file