Add service desk controller

app/controllers/projects/service_desk_controller.rb

+class Projects::ServiceDeskController < Projects::ApplicationController
+  before_action :authorize_admin_project!, only: :update
+  before_action :authorize_read_project!, only: :show
+
+  def show
+    json_response
+  end
+
+  def update
+    Projects::UpdateService.new(project, current_user, { service_desk_enabled: params[:service_desk_enabled] }).execute
+
+    json_response
+  end
+
+  private
+
+  def json_response
+    respond_to do |format|
+      attributes =
+        { service_desk_address: project.service_desk_address, service_desk_enabled: project.service_desk_enabled }
+
+      format.json { render json: attributes.to_json, status: :ok }
+    end
+  end
+end

config/routes/project.rb

@@ -155,6 +155,10 @@ constraints(ProjectUrlConstrainer.new) do
         end
       end
 
+      ## EE-specific
+      get '/service_desk' => 'service_desk#show', as: :service_desk
+      put '/service_desk' => 'service_desk#update', as: :service_desk_refresh
+
       resources :protected_branches, only: [:index, :show, :create, :update, :destroy, :patch], constraints: { id: Gitlab::Regex.git_reference_regex } do
         scope module: :protected_branches do
           resources :merge_access_levels, only: [:destroy]

spec/controllers/projects/service_desk_controller_spec.rb

+require 'spec_helper'
+
+describe Projects::ServiceDeskController do
+  let(:project) { create(:project_empty_repo, :private) }
+  let(:user)    { create(:user) }
+
+  before do
+    project.add_master(user)
+    sign_in(user)
+    allow_any_instance_of(License).to receive(:add_on?).and_call_original
+    allow_any_instance_of(License).to receive(:add_on?).with('GitLab_ServiceDesk') { true }
+  end
+
+  describe 'GET service desk properties' do
+    it 'returns service_desk JSON data' do
+      project.update(service_desk_enabled: true)
+
+      get :show, namespace_id: project.namespace.to_param, project_id: project, format: :json
+
+      body = JSON.parse(response.body)
+      expect(body["service_desk_address"]).to match(/\A[^@]+@[^@]+\z/)
+      expect(body["service_desk_enabled"]).to be_truthy
+      expect(response.status).to eq(200)
+    end
+  end
+
+  describe 'PUT service desk properties' do
+    it 'toggles services desk incoming email' do
+      project.update(service_desk_enabled: true)
+      old_address = project.service_desk_address
+      project.update(service_desk_enabled: false)
+
+      put :update, namespace_id: project.namespace.to_param, project_id: project, service_desk_enabled: true, format: :json
+
+      body = JSON.parse(response.body)
+      expect(body["service_desk_address"]).to be_present
+      expect(body["service_desk_address"]).not_to eq(old_address)
+      expect(body["service_desk_enabled"]).to be_truthy
+      expect(response.status).to eq(200)
+    end
+  end
+end

spec/lib/gitlab/email/handler/service_desk_handler_spec.rb

@@ -59,7 +59,7 @@ describe Gitlab::Email::Handler::EE::ServiceDeskHandler do
       end
 
       it 'does not create an issue or send email' do
-         expect(Notify).not_to receive(:service_desk_thank_you_email)
+        expect(Notify).not_to receive(:service_desk_thank_you_email)
 
         expect { receiver.execute rescue nil }.not_to change { Issue.count }
       end