Conditionally add Matomo tracking code to head

Bump version to 0.3.3

Author: jazairi

app/views/layouts/_head.html.erb

@@ -25,26 +25,20 @@
 
 <%= yield :additional_js %>
 
-<% if (ENV['GOOGLE_ANALYTICS']) %>
+<% if (ENV['MATOMO_URL'].present? && ENV['MATOMO_SITE_ID'].present?) %>
+<!-- Matomo -->
 <script type="text/javascript">
-  // Google Analytics
-
-  (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','https://www.google-analytics.com/analytics.js','ga'));
-
-  ga('create', '<%= ENV['GOOGLE_ANALYTICS'] %>', 'auto');
-  ga('send', 'pageview');
-
+  var _paq = window._paq || [];
+  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+  _paq.push(['trackPageView']);
+  _paq.push(['enableLinkTracking']);
+  (function() {
+    var u='<%= ENV['MATOMO_URL'] %>';
+    _paq.push(['setTrackerUrl', u+'matomo.php']);
+    _paq.push(['setSiteId', '<%= ENV['MATOMO_SITE_ID'] %>']);
+    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+    g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+  })();
 </script>
+<!-- End Matomo Code -->
 <% end %>

lib/mitlibraries/theme/version.rb

@@ -1,5 +1,5 @@
 module Mitlibraries
   module Theme
-    VERSION = '0.3.2'.freeze
+    VERSION = '0.3.3'.freeze
   end
 end