module Spree
  module Core
    class Engine < ::Rails::Engine
      def self.api_available?
        @@api_available ||= ::Rails::Engine.subclasses.map(&:instance).map { |e| e.class.to_s }.include?('Spree::Api::Engine')
      end

      def self.backend_available?
        @@backend_available ||= ::Rails::Engine.subclasses.map(&:instance).map { |e| e.class.to_s }.include?('Spree::Backend::Engine')
      end

      def self.frontend_available?
        @@frontend_available ||= ::Rails::Engine.subclasses.map(&:instance).map { |e| e.class.to_s }.include?('Spree::Frontend::Engine')
      end
    end
  end
end