CDPT-1059 Enable maintenance mode (#698)

Author: vertism

app/controllers/application_controller.rb

@@ -2,6 +2,8 @@ class ApplicationController < ActionController::Base
   include SecurityHandling
   include ErrorHandling
 
+  before_action :maintenance_mode
+
   # This is required to get request attributes in to the production logs.
   # See the various lograge configurations in `production.rb`.
   def append_info_to_payload(payload)
@@ -49,4 +51,8 @@ def initialize_disclosure_check(attributes = {})
       session[:disclosure_check_id] = disclosure_check.id
     end
   end
+
+  def maintenance_mode
+    render "errors/maintenance" unless Rails.env.test?
+  end
 end

config/locales/en/errors.yml

@@ -127,4 +127,4 @@ en:
     maintenance:
       page_title: Service Maintenance
       heading: Service Maintenance
-      lead_text: Sorry, this service is currently not available because of routine maintenance and will be back up shortly.
+      lead_text: This service is currently unavailable