Track some basic analytics with Keen.io

.env

@@ -1,15 +1,17 @@
 # https://github.com/ddollar/forego
-ASSET_HOST=localhost:3000
 APPLICATION_HOST=localhost:3000
+ASSET_HOST=localhost:3000
+EXECJS_RUNTIME=Node
+KEEN_PROJECT_ID=replace_me
+KEEN_WRITE_KEY=replace_me
+PASSWORD=password
 PORT=3000
 RACK_ENV=development
 RACK_MINI_PROFILER=0
 SECRET_KEY_BASE=development_secret
-EXECJS_RUNTIME=Node
 SMTP_ADDRESS=smtp.example.com
 SMTP_DOMAIN=example.com
 SMTP_PASSWORD=password
 SMTP_USERNAME=username
-PASSWORD=password
 USERNAME=username
 WEB_CONCURRENCY=1

Gemfile

@@ -12,6 +12,7 @@ gem "pg"
 gem "puma"
 gem "rack-canonical-host"
 gem "rails", "~> 5.0.0"
+gem "rails-assets-bowser", source: "https://rails-assets.org"
 gem "recipient_interceptor"
 gem "redcarpet"
 gem "sass-rails", "~> 5.0"

Gemfile.lock

@@ -1,5 +1,6 @@
 GEM
   remote: https://rubygems.org/
+  remote: https://rails-assets.org/
   specs:
     actioncable (5.0.0.1)
       actionpack (= 5.0.0.1)
@@ -169,6 +170,7 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 5.0.0.1)
       sprockets-rails (>= 2.0.0)
+    rails-assets-bowser (1.4.5)
     rails-dom-testing (2.0.1)
       activesupport (>= 4.2.0, < 6.0)
       nokogiri (~> 1.6.0)
@@ -303,6 +305,7 @@ DEPENDENCIES
   rack-mini-profiler
   rack-timeout
   rails (~> 5.0.0)
+  rails-assets-bowser!
   rails_stdout_logging
   recipient_interceptor
   redcarpet

app/assets/javascripts/application.js

@@ -9,10 +9,12 @@
 //
 // Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
 // about supported directives.
-//
+
 //= require jquery
 //= require jquery_ujs
 
+//= require bowser
+
 //= require_tree .
 
 function getTimeRemaining(endtime){

app/views/application/_analytics.html.erb

@@ -1,7 +1,31 @@
-<% if ENV["SEGMENT_KEY"] %>
+<% unless Rails.env.test? %>
+  <script src="https://d26b395fwzu5fz.cloudfront.net/3.4.1/keen.min.js" type="text/javascript"></script>
   <script type="text/javascript">
-    window.analytics=window.analytics||[],window.analytics.methods=["identify","group","track","page","pageview","alias","ready","on","once","off","trackLink","trackForm","trackClick","trackSubmit"],window.analytics.factory=function(t){return function(){var a=Array.prototype.slice.call(arguments);return a.unshift(t),window.analytics.push(a),window.analytics}};for(var i=0;i<window.analytics.methods.length;i++){var key=window.analytics.methods[i];window.analytics[key]=window.analytics.factory(key)}window.analytics.load=function(t){if(!document.getElementById("analytics-js")){var a=document.createElement("script");a.type="text/javascript",a.id="analytics-js",a.async=!0,a.src=("https:"===document.location.protocol?"https://":"http://")+"cdn.segment.com/analytics.js/v1/"+t+"/analytics.min.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(a,n)}},window.analytics.SNIPPET_VERSION="2.0.9",
-    window.analytics.load("<%= ENV["SEGMENT_KEY"] %>");
-    window.analytics.page();
+
+var keenClient = new Keen({
+  projectId: "<%= ENV.fetch('KEEN_PROJECT_ID') %>",
+  writeKey: "<%= ENV.fetch('KEEN_WRITE_KEY') %>",
+});
+
+var pageLoadDate = new Date();
+var pageLoadTime = pageLoadDate.getTime();
+
+var pageData = {
+  client_ip: <%= request.remote_ip.inspect.html_safe %>,
+  params: <%= params.to_json.html_safe %>,
+  page_controller_path: "<%= [params[:controller], params[:action]].join('.') %>",
+  referrer: document.referrer,
+  browser: bowser,
+  keen: {
+    timestamp: pageLoadDate.toISOString()
+  }
+};
+
+keenClient.addEvent("Page Load", pageData);
+
+window.onbeforeunload = function (event) {
+  pageData.timeSpentInMilliseconds = new Date().getTime() - pageLoadTime;
+  keenClient.addEvent("Page Unload", pageData);
+}
   </script>
 <% end %>