Update maintenance page

app/controllers/application_controller.rb

@@ -31,7 +31,7 @@ def set_user
   def maintenance_mode
     redirect_to "/" and return unless maintenance_mode_on?
 
-    render layout: nil, file: "layouts/maintenance"
+    render "layouts/maintenance", layout: nil
   end
 
 private
@@ -43,7 +43,7 @@ def check_maintenance_mode
   end
 
   def maintenance_mode_on?
-    File.exist? Rails.root.join("maintenance.txt")
+    ENV["MAINTENANCE_MODE"] == "ON"
   end
 
   def download_csv_request?

app/views/cases/filters/index.html.slim

@@ -6,6 +6,9 @@
 
 = render partial: 'layouts/header'
 
+- content_for :alert_banner
+  = render partial: 'layouts/alert_banner'
+
 - if @can_add_case
   .grid-row
     .column-full.button-holder

app/views/layouts/application.html.slim

@@ -40,6 +40,7 @@
 
   = csrf_meta_tags
   = render partial: 'layouts/phase_banner'
+  = yield :alert_banner
 
   .grid-row
     .column-full

app/views/layouts/maintenance.html.slim

@@ -1,3 +1,6 @@
+- content_for :page_title do
+  = "Sorry, the service is unavailable – #{t('common.service_name')} – GOV.UK"
+
 - content_for :logo_link_title do
   = "Return to home page"
 
@@ -37,7 +40,8 @@
       main#content
         h1.page-heading style="border-bottom: 1px solid #000"
           = "Service down for planned maintenance"
-        p.lede  This service will be down for essential maintenance during the afternoon of Wednesday 13 November. You will not have access after 13.00 on this day – the site will likely resume service after business hours. Apologies for the inconvenience.
+        p.lede This service is down for essential maintenance from 17:30 on Tuesday 17 December.<br>You will not have access from this time.<br>The site will resume service later in the evening of 17 December.
+        p.lede We apologies for any inconvenience this may cause.
 
 - content_for :body_end do
   = javascript_include_tag "application"

config/locales/en.yml

@@ -1050,7 +1050,7 @@ en:
 
   common:
     accessibility: Accessibility
-    alert_banner_html: "This service will be down for essential maintenance during the afternoon of Wednesday 14th April. You will not have access after 13.00 on this day and the site will resume service after business hours. Please contact <a href='mailto:[email protected]'>[email protected]</a> if you have any queries. Apologies for the inconvenience."
+    alert_banner_html: "This service will be down for essential maintenance from 17:30 on Tuesday 17 December. The site will resume service after business hours. Please contact <a href='mailto:[email protected]'>[email protected]</a> if you have any queries. Apologies for the inconvenience."
     case:
       actions: Actions
       answered_in_time: Answered in time

spec/controllers/application_controller_spec.rb

@@ -0,0 +1,35 @@
+require "rails_helper"
+
+RSpec.describe ApplicationController, type: :controller do
+  let(:user) { create(:user) }
+
+  xdescribe "#maintenance_mode" do
+    before do
+      sign_in user
+    end
+
+    context "when maintenance mode is off" do
+      it "redirects requests for the maintenance page to the homepage" do
+        get :maintenance_mode
+        expect(response).to redirect_to("/")
+      end
+    end
+
+    context "when maintenance mode is on" do
+      before do
+        allow(controller).to receive(:maintenance_mode_on?).and_return true
+      end
+
+      it "renders the maintenance page" do
+        get :maintenance_mode
+        expect(response).to render_template(:maintenance)
+      end
+
+      it "redirects other requests to the maintenance page" do
+        @controller = Cases::FiltersController.new
+        get :open
+        expect(response).to redirect_to("/maintenance")
+      end
+    end
+  end
+end