Add API for system info

app/controllers/api/v1/systems_controller.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class SystemsController < ApiController
+      skip_before_action :find_current_user
+      skip_before_action :require_login
+
+      def show
+      end
+    end
+  end
+end

app/views/api/v1/systems/show.json.jbuilder

@@ -0,0 +1,6 @@
+json.version do
+  json.major BlackCandy::Version::MAJOR
+  json.minor BlackCandy::Version::MINOR
+  json.patch BlackCandy::Version::PATCH
+  json.pre BlackCandy::Version::PRE
+end

config/routes.rb

@@ -52,6 +52,7 @@
   namespace :api do
     namespace :v1 do
       resource :authentication, only: [:create]
+      resource :system, only: [:show]
       resources :songs, only: [:show]
       resources :stream, only: [:new]
       resources :transcoded_stream, only: [:new]

test/controllers/api/v1/systems_controller_test.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class Api::V1::SystemsControllerTest < ActionDispatch::IntegrationTest
+  test "should get system version" do
+    get api_v1_system_url, as: :json
+    response = @response.parsed_body["version"]
+
+    assert_response :success
+    assert_equal BlackCandy::Version::MAJOR, response["major"]
+    assert_equal BlackCandy::Version::MINOR, response["minor"]
+    assert_equal BlackCandy::Version::PATCH, response["patch"]
+    assert_equal BlackCandy::Version::PRE, response["pre"]
+  end
+end