Add help_page controller and update content item model to support hel…

…p_page

- Add new route
- Add help_page controller
- Update content item model
- Add help_page views
- Add system spec for the new help_page

Commit audit trail:
- spec/system/help_page_spec.rb https://github.com/alphagov/government-frontend/blob/0fc5e6f8d6215c10f9a29795265f31fab526c0a5/test/integration/help_page_test.rb
- app/views/help_page/show.html.erb https://github.com/alphagov/government-frontend/blob/0fc5e6f8d6215c10f9a29795265f31fab526c0a5/app/views/content_items/help_page.html.erb

app/controllers/content_items_controller.rb

@@ -26,7 +26,7 @@ def content_item
   end
 
   def content_item_slug
-    nil # set to override content item fetched from Content Store
+    request.path
   end
 
   def content_item_hash

app/controllers/help_page_controller.rb

@@ -0,0 +1,2 @@
+class HelpPageController < ContentItemsController
+end

app/models/content_item.rb

@@ -1,5 +1,5 @@
 class ContentItem
-  attr_reader :content_store_response, :body, :image, :description, :document_type, :title, :base_path, :locale
+  attr_reader :content_store_response, :body, :image, :description, :document_type, :title, :base_path, :locale, :last_updated, :schema_name
 
   def initialize(content_store_response)
     @content_store_response = content_store_response
@@ -10,6 +10,8 @@ def initialize(content_store_response)
     @title = content_store_response["title"]
     @base_path = content_store_response["base_path"]
     @locale = content_store_response["locale"]
+    @last_updated = content_store_response["public_updated_at"]
+    @schema_name = content_store_response["schema_name"]
   end
 
   delegate :to_h, to: :content_store_response

app/views/help_page/show.html.erb

@@ -0,0 +1,9 @@
+<% content_for :extra_head_content do %>
+	<%= render "govuk_publishing_components/components/machine_readable_metadata", { content_item: @content_item.to_h, schema: :article } %>
+<% end %>
+
+<% if @content_item.base_path == '/help/cookie-details' %>
+  <meta name="robots" content="noindex">
+<% end %>
+
+<%= render 'shared/body_with_related_links' %>

app/views/shared/_body_with_related_links.html.erb

@@ -0,0 +1,29 @@
+<% content_for :simple_header, true %>
+<div class="govuk-grid-row">
+  <div class="govuk-grid-column-two-thirds">
+    <%= render 'govuk_publishing_components/components/title',
+      title: @content_item.title %>
+  </div>
+</div>
+<div class="govuk-grid-row">
+  <div class="govuk-grid-column-two-thirds">
+    <div class="responsive-bottom-margin">
+
+      <%= render 'govuk_publishing_components/components/govspeak', {
+        direction: page_text_direction,
+        disable_youtube_expansions: true,
+      } do %>
+      <%= raw(@content_item.body) %>
+      <% end %>
+      
+      <% if @content_item.last_updated && @content_item.schema_name == "help_page" %>
+      <%= render "components/published_dates", {
+        last_updated: display_date(@content_item.last_updated)
+      } %>
+      <% end %>
+    </div>
+  </div>
+  <%= render 'shared/sidebar_navigation' %>
+</div>
+
+<%= render 'shared/footer_navigation' %>

config/routes.rb

@@ -41,9 +41,12 @@
   end
 
   # Help pages
-  get "/help", to: "help#index"
-  get "/help/ab-testing", to: "help#ab_testing"
-  get "/help/cookies", to: "help#cookie_settings"
+  scope "/help" do
+    get "/:slug", to: "help_page#show", constraints: { slug: /(?!(ab-testing|cookies)$).*/ }
+    get "/", to: "help#index", as: :help
+    get "/ab-testing", to: "help#ab_testing"
+    get "/cookies", to: "help#cookie_settings"
+  end
 
   # GOVUK Public Roadmap
   get "/roadmap", to: "roadmap#index"

spec/system/help_page_spec.rb

@@ -0,0 +1,43 @@
+RSpec.describe "HelpPage" do
+  let(:base_path) { "/help/about-govuk" }
+  let(:title) { "About GOV.UK" }
+  let(:body) { "<p>GOV.UK is the website for the UK government. It’s the best place to find government services and information.</p>" }
+
+  let(:payload) do
+    {
+      base_path:,
+      format: "help_page",
+      title:,
+      details: { body: },
+    }
+  end
+
+  before do
+    stub_content_store_has_item(base_path, payload)
+  end
+
+  it "displays the help page" do
+    visit base_path
+
+    expect(page).to have_title("#{title} - GOV.UK")
+    expect(page).to have_css("h1", text: title)
+    expect(page).to have_text("GOV.UK is the website for the UK government. It’s the best place to find government services and information.")
+  end
+
+  context "when visiting '/help/cookie-details'" do
+    let(:base_path) { "/help/cookie-details" }
+    let(:title) { "Details about cookies on GOV.UK" }
+
+    it "sets noindex meta tag" do
+      visit base_path
+
+      expect(page).to have_css('meta[name="robots"][content="noindex"]', visible: false)
+    end
+
+    it "does not render with the single page notification button" do
+      visit base_path
+
+      expect(page).not_to have_css(".gem-c-single-page-notification-button")
+    end
+  end
+end

spec/system/sessions_spec.rb

@@ -6,7 +6,12 @@
   include GdsApi::TestHelpers::EmailAlertApi
   include GovukPersonalisation::TestHelpers::Features
 
+  path = "/email/subscriptions/account/confirm"
+
   before do
+    stub_request(:get, "http://content-store.dev.gov.uk/content#{path}")
+    .to_return(status: 200, body: { details: { body: "" }, links: {} }.to_json, headers: {})
+
     stub_content_store_has_item("/", schema: "special_route", links: {})
 
     # The redirect test needs a route to actually exist to redirect to
@@ -16,7 +21,7 @@
     Rails.application.routes.disable_clear_and_finalize = true
 
     Rails.application.routes.draw do
-      get "/email/subscriptions/account/confirm", to: "homepage#index"
+      get path, to: "homepage#index"
     end
   end
 
@@ -31,7 +36,7 @@
     end
 
     it "Logs the user in and send them to a redirect path if supplied" do
-      redirect_path = "/email/subscriptions/account/confirm?frequency=immediately&return_to_url=true&topic_id=some-page-with-notifications"
+      redirect_path = "#{path}?frequency=immediately&return_to_url=true&topic_id=some-page-with-notifications"
       given_a_successful_login_attempt(redirect_path:)
       visit new_govuk_session_callback_path(code: "code", state: "state")