Show header and footer system messages in email

* Add email_header_and_footer_enabled flag to appearances table
* Set email_header_and_footer_enabled default value to false
* Add checkbox to appearance to toggle show header and footer in emails
* Add email_header_and_footer_enabled to allowed params in controller
* Add header and footer messages to the html and text email layouts
* Remove the color styling for emails header and footer
* Add empty_mailer layout for emails without layout,
to have the header and footer applied

app/controllers/admin/appearances_controller.rb

@@ -78,6 +78,7 @@ class Admin::AppearancesController < Admin::ApplicationController
       footer_message
       message_background_color
       message_font_color
+      email_header_and_footer_enabled
     ]
   end
 end

app/helpers/appearances_helper.rb

 # frozen_string_literal: true
 
 module AppearancesHelper
+  include MarkupHelper
+
   def brand_title
     current_appearance&.title.presence || default_brand_title
   end
@@ -47,7 +49,7 @@ module AppearancesHelper
     class_names = []
     class_names << 'with-performance-bar' if performance_bar_enabled?
 
-    render_message(:header_message, class_names)
+    render_message(:header_message, class_names: class_names)
   end
 
   def footer_message
@@ -58,10 +60,10 @@ module AppearancesHelper
 
   private
 
-  def render_message(field_sym, class_names = [])
+  def render_message(field_sym, class_names: [], style: message_style)
     class_names << field_sym.to_s.dasherize
 
-    content_tag :div, class: class_names, style: message_style do
+    content_tag :div, class: class_names, style: style do
       markdown_field(current_appearance, field_sym)
     end
   end

app/helpers/emails_helper.rb

@@ -131,4 +131,42 @@ module EmailsHelper
 
     project.id.to_s + "." + project_path_as_domain + "." + Gitlab.config.gitlab.host
   end
+
+  def html_header_message
+    return unless show_header?
+
+    render_message(:header_message, style: '')
+  end
+
+  def html_footer_message
+    return unless show_footer?
+
+    render_message(:footer_message, style: '')
+  end
+
+  def text_header_message
+    return unless show_header?
+
+    strip_tags(render_message(:header_message, style: ''))
+  end
+
+  def text_footer_message
+    return unless show_footer?
+
+    strip_tags(render_message(:footer_message, style: ''))
+  end
+
+  private
+
+  def show_footer?
+    email_header_and_footer_enabled? && current_appearance&.show_footer?
+  end
+
+  def show_header?
+    email_header_and_footer_enabled? && current_appearance&.show_header?
+  end
+
+  def email_header_and_footer_enabled?
+    current_appearance&.email_header_and_footer_enabled?
+  end
 end

app/mailers/abuse_report_mailer.rb

 # frozen_string_literal: true
 
 class AbuseReportMailer < BaseMailer
+  layout 'empty_mailer'
+
+  helper EmailsHelper
+
   def notify(abuse_report_id)
     return unless deliverable?
 

app/mailers/email_rejection_mailer.rb

 # frozen_string_literal: true
 
 class EmailRejectionMailer < BaseMailer
+  layout 'empty_mailer'
+
+  helper EmailsHelper
+
   def rejection(reason, original_raw, can_retry = false)
     @reason = reason
     @original_message = Mail::Message.new(original_raw)

app/mailers/repository_check_mailer.rb

@@ -2,6 +2,10 @@
 
 class RepositoryCheckMailer < BaseMailer
   # rubocop: disable CodeReuse/ActiveRecord
+  layout 'empty_mailer'
+
+  helper EmailsHelper
+
   def notify(failed_count)
     @message =
       if failed_count == 1

app/models/appearance.rb

@@ -20,6 +20,7 @@ class Appearance < ActiveRecord::Base
 
   default_value_for :message_background_color, '#E75E40'
   default_value_for :message_font_color, '#FFFFFF'
+  default_value_for :email_header_and_footer_enabled, false
 
   mount_uploader :logo,         AttachmentUploader
   mount_uploader :header_logo,  AttachmentUploader

app/views/admin/appearances/_system_header_footer_form.html.haml

@@ -13,6 +13,15 @@
     .form-group
       = form.label :footer_message, _('Footer message'), class: 'col-form-label label-bold'
       = form.text_area :footer_message, placeholder: _('State your message to activate'), class: "form-control js-autosize"
+    .form-group
+      .form-check
+        = form.check_box :email_header_and_footer_enabled, class: 'form-check-input'
+        = form.label :email_header_and_footer_enabled, class: 'label-bold' do
+          = _('Enable header and footer in emails')
+
+        .hint
+          = _('Add header and footer to emails. Please note that color settings will only be applied within the application interface')
+
     .form-group.js-toggle-colors-container
       %button.btn.btn-link.js-toggle-colors-link{ type: 'button' }
         = _('Customize colors')

app/views/layouts/_mailer.html.haml

@@ -52,6 +52,7 @@
           %td{ style: "font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;background-color:#6b4fbb;height:4px;font-size:4px;line-height:4px;" }
         %tr.header
           %td{ style: "font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;padding:25px 0;font-size:13px;line-height:1.6;color:#5c5c5c;" }
+            = html_header_message
             = header_logo
         %tr
           %td{ style: "font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;" }
@@ -72,3 +73,6 @@
               = _("You're receiving this email because of your account on %{host}. %{manage_notifications_link} · %{help_link}").html_safe % { host: Gitlab.config.gitlab.host, manage_notifications_link: manage_notifications_link, help_link: help_link }
 
         = yield :additional_footer
+        %tr
+          %td{ style: "font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;padding:25px 0;font-size:13px;line-height:1.6;color:#5c5c5c;" }
+            = html_footer_message

app/views/layouts/empty_mailer.html.haml

+= html_header_message
+
+= yield
+
+= html_footer_message

app/views/layouts/empty_mailer.text.erb

+<%= text_header_message %>
+
+<%= yield -%>
+
+<%= text_footer_message %>

app/views/layouts/mailer.text.erb

+<%= text_header_message %>
+
 <%= yield -%>
 
 -- <%# signature marker %>
 <%= _("You're receiving this email because of your account on %{host}.") % { host: Gitlab.config.gitlab.host } %>
+
+<%= text_footer_message %>

app/views/layouts/notify.html.haml

@@ -7,6 +7,7 @@
     = yield :head
   %body
     .content
+      = html_header_message
       = yield
     .footer{ style: "margin-top: 10px;" }
       %p
@@ -30,3 +31,4 @@
             adjust your notification settings.
 
           = email_action @target_url
+        = html_footer_message

app/views/layouts/notify.text.erb

+<%= text_header_message %>
+
 <%= yield -%>
 
 -- <%# signature marker %>
@@ -10,3 +12,5 @@
 <%  end -%>
 
 <%= "You're receiving this email because #{notification_reason_text(@reason)}." %>
+
+<%= text_footer_message -%>

changelogs/unreleased/56863-system-messages-in-email.yml

+---
+title: Show header and footer system messages in email
+merge_request: 25474
+author:
+type: added

db/migrate/20190220142344_add_email_header_and_footer_enabled_flag_to_appearances_table.rb

+# frozen_string_literal: true
+
+class AddEmailHeaderAndFooterEnabledFlagToAppearancesTable < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    add_column_with_default(:appearances, :email_header_and_footer_enabled, :boolean, default: false)
+  end
+
+  def down
+    remove_column(:appearances, :email_header_and_footer_enabled)
+  end
+end

db/schema.rb

@@ -44,6 +44,7 @@ ActiveRecord::Schema.define(version: 20190220150130) do
     t.text "message_background_color"
     t.text "message_font_color"
     t.string "favicon"
+    t.boolean "email_header_and_footer_enabled", default: false, null: false
   end
 
   create_table "application_setting_terms", force: :cascade do |t|

doc/customization/system_header_and_footer_messages.md

@@ -7,6 +7,10 @@ Navigate to the **Admin** area and go to the **Appearance** page.
 Under **System header and footer** insert your header message and/or footer message.
 Both background and font color of the header and footer are customizable.
 
+You can also apply the header and footer messages to gitlab emails, 
+by checking the **Enable header and footer in emails** checkbox. 
+Note that color settings will only be applied within the app interface and not to emails
+
 ![appearance](system_header_and_footer_messages/appearance.png)
 
 After saving, all GitLab pages will contain the custom system header and/or footer messages:

locale/gitlab.pot

@@ -393,6 +393,9 @@ msgstr ""
 msgid "Add a table"
 msgstr ""
 
+msgid "Add header and footer to emails. Please note that color settings will only be applied within the application interface"
+msgstr ""
+
 msgid "Add image comment"
 msgstr ""
 
@@ -2959,6 +2962,9 @@ msgstr ""
 msgid "Enable group Runners"
 msgstr ""
 
+msgid "Enable header and footer in emails"
+msgstr ""
+
 msgid "Enable or disable version check and usage ping."
 msgstr ""
 

spec/controllers/admin/appearances_controller_spec.rb

+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Admin::AppearancesController do
   let(:admin) { create(:admin) }
-  let(:header_message) { "Header message" }
-  let(:footer_message) { "Footer" }
+  let(:header_message) { 'Header message' }
+  let(:footer_message) { 'Footer' }
 
   describe 'POST #create' do
     let(:create_params) do
       {
-        title: "Foo",
-        description: "Bar",
+        title: 'Foo',
+        description: 'Bar',
         header_message: header_message,
         footer_message: footer_message
       }
@@ -24,10 +26,27 @@ describe Admin::AppearancesController do
 
       expect(Appearance.current).to have_attributes(
         header_message: header_message,
-        footer_message: footer_message
+        footer_message: footer_message,
+        email_header_and_footer_enabled: false,
+        message_background_color: '#E75E40',
+        message_font_color: '#FFFFFF'
+      )
+    end
+
+    context 'when enabling header and footer in email' do
+      it 'creates appearance with enabled flag' do
+        create_params[:email_header_and_footer_enabled] = true
+
+        post :create, params: { appearance: create_params }
+
+        expect(Appearance.current).to have_attributes(
+          header_message: header_message,
+          footer_message: footer_message,
+          email_header_and_footer_enabled: true
         )
       end
     end
+  end
 
   describe 'PUT #update' do
     let(:update_params) do
@@ -48,8 +67,25 @@ describe Admin::AppearancesController do
 
       expect(Appearance.current).to have_attributes(
         header_message: header_message,
-        footer_message: footer_message
+        footer_message: footer_message,
+        email_header_and_footer_enabled: false,
+        message_background_color: '#E75E40',
+        message_font_color: '#FFFFFF'
+      )
+    end
+
+    context 'when enabling header and footer in email' do
+      it 'updates appearance with enabled flag' do
+        update_params[:email_header_and_footer_enabled] = true
+
+        post :update, params: { appearance: update_params }
+
+        expect(Appearance.current).to have_attributes(
+          header_message: header_message,
+          footer_message: footer_message,
+          email_header_and_footer_enabled: true
         )
       end
     end
+  end
 end

spec/helpers/emails_helper_spec.rb

@@ -142,4 +142,58 @@ describe EmailsHelper do
       end
     end
   end
+
+  describe 'header and footer messages' do
+    context 'when email_header_and_footer_enabled is enabled' do
+      it 'returns header and footer messages' do
+        create :appearance, header_message: 'Foo', footer_message: 'Bar', email_header_and_footer_enabled: true
+
+        aggregate_failures do
+          expect(html_header_message).to eq(%{<div class="header-message" style=""><p>Foo</p></div>})
+          expect(html_footer_message).to eq(%{<div class="footer-message" style=""><p>Bar</p></div>})
+          expect(text_header_message).to eq('Foo')
+          expect(text_footer_message).to eq('Bar')
+        end
+      end
+
+      context 'when header and footer messages are empty' do
+        it 'returns nil' do
+          create :appearance, header_message: '', footer_message: '', email_header_and_footer_enabled: true
+
+          aggregate_failures do
+            expect(html_header_message).to eq(nil)
+            expect(html_footer_message).to eq(nil)
+            expect(text_header_message).to eq(nil)
+            expect(text_footer_message).to eq(nil)
+          end
+        end
+      end
+
+      context 'when header and footer messages are nil' do
+        it 'returns nil' do
+          create :appearance, header_message: nil, footer_message: nil, email_header_and_footer_enabled: true
+
+          aggregate_failures do
+            expect(html_header_message).to eq(nil)
+            expect(html_footer_message).to eq(nil)
+            expect(text_header_message).to eq(nil)
+            expect(text_footer_message).to eq(nil)
+          end
+        end
+      end
+    end
+
+    context 'when email_header_and_footer_enabled is disabled' do
+      it 'returns header and footer messages' do
+        create :appearance, header_message: 'Foo', footer_message: 'Bar', email_header_and_footer_enabled: false
+
+        aggregate_failures do
+          expect(html_header_message).to eq(nil)
+          expect(html_footer_message).to eq(nil)
+          expect(text_header_message).to eq(nil)
+          expect(text_footer_message).to eq(nil)
+        end
+      end
+    end
+  end
 end

spec/mailers/abuse_report_mailer_spec.rb

@@ -4,25 +4,24 @@ describe AbuseReportMailer do
   include EmailSpec::Matchers
 
   describe '.notify' do
-    context 'with admin_notification_email set' do
     before do
       stub_application_setting(admin_notification_email: 'admin@example.com')
     end
 
-      it 'sends to the admin_notification_email' do
-        report = create(:abuse_report)
+    let(:report) { create(:abuse_report) }
 
-        mail = described_class.notify(report.id)
+    subject { described_class.notify(report.id) }
 
-        expect(mail).to deliver_to 'admin@example.com'
+    it_behaves_like 'appearance header and footer enabled'
+    it_behaves_like 'appearance header and footer not enabled'
+
+    context 'with admin_notification_email set' do
+      it 'sends to the admin_notification_email' do
+        is_expected.to deliver_to 'admin@example.com'
       end
 
       it 'includes the user in the subject' do
-        report = create(:abuse_report)
-
-        mail = described_class.notify(report.id)
-
-        expect(mail).to have_subject "#{report.user.name} (#{report.user.username}) was reported for abuse"
+        is_expected.to have_subject "#{report.user.name} (#{report.user.username}) was reported for abuse"
       end
     end
 

spec/mailers/email_rejection_mailer_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe EmailRejectionMailer do
+  include EmailSpec::Matchers
+
+  describe '#rejection' do
+    let(:raw_email) { 'From: someone@example.com\nraw email here' }
+
+    subject { described_class.rejection('some rejection reason', raw_email) }
+
+    it_behaves_like 'appearance header and footer enabled'
+    it_behaves_like 'appearance header and footer not enabled'
+  end
+end

spec/mailers/emails/auto_devops_spec.rb

@@ -13,6 +13,9 @@ describe Emails::AutoDevops do
 
     subject { Notify.autodevops_disabled_email(pipeline, owner.email) }
 
+    it_behaves_like 'appearance header and footer enabled'
+    it_behaves_like 'appearance header and footer not enabled'
+
     it 'sents email with correct subject' do
       is_expected.to have_subject("#{project.name} | Auto DevOps pipeline was disabled for #{project.name}")
     end

spec/mailers/emails/issues_spec.rb

@@ -29,5 +29,14 @@ describe Emails::Issues do
 
       expect(subject).to have_body_text "23, 34, 58"
     end
+
+    context 'with header and footer' do
+      let(:results) { { success: 165, error_lines: [], parse_error: false } }
+
+      subject { Notify.import_issues_csv_email(user.id, project.id, results) }
+
+      it_behaves_like 'appearance header and footer enabled'
+      it_behaves_like 'appearance header and footer not enabled'
+    end
   end
 end

spec/mailers/repository_check_mailer_spec.rb

@@ -17,5 +17,12 @@ describe RepositoryCheckMailer do
 
       expect(mail).to have_subject 'GitLab Admin | 3 projects failed their last repository check'
     end
+
+    context 'with footer and header' do
+      subject { described_class.notify(1) }
+
+      it_behaves_like 'appearance header and footer enabled'
+      it_behaves_like 'appearance header and footer not enabled'
+    end
   end
 end

spec/models/appearance_spec.rb

@@ -78,4 +78,22 @@ describe Appearance do
     it { is_expected.to allow_value(hex).for(:message_font_color) }
     it { is_expected.not_to allow_value('000').for(:message_font_color) }
   end
+
+  describe 'email_header_and_footer_enabled' do
+    context 'default email_header_and_footer_enabled flag value' do
+      it 'returns email_header_and_footer_enabled as true' do
+        appearance = build(:appearance)
+
+        expect(appearance.email_header_and_footer_enabled?).to eq(false)
+      end
+    end
+
+    context 'when setting email_header_and_footer_enabled flag value' do
+      it 'returns email_header_and_footer_enabled as true' do
+        appearance = build(:appearance, email_header_and_footer_enabled: true)
+
+        expect(appearance.email_header_and_footer_enabled?).to eq(true)
+      end
+    end
+  end
 end

spec/support/shared_examples/notify_shared_examples.rb

@@ -252,3 +252,31 @@ shared_examples 'a note email' do
     end
   end
 end
+
+shared_examples 'appearance header and footer enabled' do
+  it "contains header and footer" do
+    create :appearance, header_message: "Foo", footer_message: "Bar", email_header_and_footer_enabled: true
+
+    aggregate_failures do
+      expect(subject.html_part).to have_body_text("<div class=\"header-message\" style=\"\"><p>Foo</p></div>")
+      expect(subject.html_part).to have_body_text("<div class=\"footer-message\" style=\"\"><p>Bar</p></div>")
+
+      expect(subject.text_part).to have_body_text(/^Foo/)
+      expect(subject.text_part).to have_body_text(/Bar$/)
+    end
+  end
+end
+
+shared_examples 'appearance header and footer not enabled' do
+  it "does not contain header and footer" do
+    create :appearance, header_message: "Foo", footer_message: "Bar", email_header_and_footer_enabled: false
+
+    aggregate_failures do
+      expect(subject.html_part).not_to have_body_text("<div class=\"header-message\" style=\"\"><p>Foo</p></div>")
+      expect(subject.html_part).not_to have_body_text("<div class=\"footer-message\" style=\"\"><p>Bar</p></div>")
+
+      expect(subject.text_part).not_to have_body_text(/^Foo/)
+      expect(subject.text_part).not_to have_body_text(/Bar$/)
+    end
+  end
+end