Configure MATOMO from the environment

We try to be a 12factor app right? :-)

.gitignore

@@ -2,7 +2,6 @@
 config/application.rb
 config/config.yml
 config/secrets.yml
-config/piwik.yml
 /vendor/cache
 /vendor/cache-old
 /storage/*

config/piwik.yml

@@ -9,25 +9,22 @@
 # id_site
 #   The id of your website inside Piwik
 #
+
+default: &default
+  id_site:  <%= ENV['OSEM_PIWIK_ID'] %>
+  url: <%= ENV['OSEM_PIWIK_URL'] %>
+  use_async: <%= ENV['OSEM_PIWIK_ASYNC'] || false %>
+  disabled: <%= ENV['OSEM_PIWIK_DISABLED'] || true %>
+  hostname: <%= ENV['OSEM_PIWIK_HOSTNAME'] || 'localhost' %>
+
 production:
   piwik:
-    id_site: 1
-    url: localhost
-    use_async: false
-    disabled: false
+    <<: *default
 
 development:
   piwik:
-    id_site: 1
-    url: localhost
-    disabled: true
-    use_async: false
-    hostname: localhost
+    <<: *default
 
 test:
   piwik:
-    id_site: 1
-    url: localhost
-    disabled: true
-    use_async: false
-    hostname: localhost
+    <<: *default

dotenv.example

@@ -70,9 +70,12 @@
 # STRIPE_PUBLISHABLE_KEY=1234
 # STRIPE_SECRET_KEY=5678
 
-# Disable linting of factories in the test suite.
-# Speeds up turn around times of tests
-# OSEM_FACTORY_LINT=false
+# MATOMO/PIWIK CONFIGURATION
+# OSEM_PIWIK_ID=12345
+# OSEM_PIWIK_URL=localhost
+# OSEM_PIWIK_ASYNC=false
+# OSEM_PIWIK_DISABLED=true
+# OSEM_PIWIK_HOSTNAME=localhost
 
 # The smtp configuration. See the rails guides for more
 # http://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration
@@ -104,3 +107,8 @@
 # Your skylight.io keys
 # SKYLIGHT_AUTHENTICATION=1234
 # SKYLIGHT_PUBLIC_DASHBOARD_URL='https://oss.skylight.io/app/applications/xxxxxxxxxxxx'
+
+# Disable linting of factories in the test suite.
+# Speeds up turn around times of tests
+# OSEM_FACTORY_LINT=false
+