API v1 config endpoint

app/controllers/api/v1/configs_controller.rb

@@ -0,0 +1,7 @@
+class Api::V1::ConfigsController < Api::V1::BaseController
+
+  def show
+    render json: FoodsoftConfig, serializer: ConfigSerializer, root: 'config'
+  end
+
+end

app/serializers/config_serializer.rb

@@ -0,0 +1,39 @@
+class ConfigSerializer < ActiveModel::Serializer
+
+  # details
+  attributes :name, :homepage, :contact
+
+  # settings
+  attributes :currency_unit, :currency_space, :default_locale, :price_markup,
+             :tolerance_is_costly, :use_apple_points, :use_tolerance
+
+  # layout
+  attributes :page_footer_html, :webstats_tracking_code_html
+
+  # help and version
+  attributes :applepear_url, :help_url, :foodsoft
+
+
+  def foodsoft
+    {
+      version: Foodsoft::VERSION,
+      revision: Foodsoft::REVISION,
+      url: object[:foodsoft_url]
+    }
+  end
+
+  def page_footer_html
+    # also see footer layout
+    if FoodsoftConfig[:page_footer].present?
+      FoodsoftConfig[:page_footer]
+    elsif FoodsoftConfig[:homepage].present?
+      ActionController::Base.helpers.link_to(FoodsoftConfig[:name], FoodsoftConfig[:homepage])
+    else
+      FoodsoftConfig[:name]
+    end
+  end
+
+  def webstats_tracking_code_html
+    FoodsoftConfig[:webstats_tracking_code].presence
+  end
+end

config/routes.rb

@@ -246,6 +246,7 @@ Foodsoft::Application.routes.draw do
     namespace :api do
       namespace :v1 do
         resource :user, only: [:show]
+        resource :config, only: [:show]
       end
     end
 

lib/foodsoft_config.rb

@@ -180,6 +180,9 @@ class FoodsoftConfig
       Hash[keys.map {|k| [k, self[k]]} ]
     end
 
+    # for using active_model_serializer in the api/v1/configs controller
+    alias :read_attribute_for_serialization :[]
+
     protected
 
     # @!attribute default_config