module PagesCore
  module DomainBasedCache
    extend ActiveSupport::Concern

    included do
      before_action :set_domain_based_cache_path
    end

    module ClassMethods
      def default_page_cache_directory
        @default_page_cache_directory ||=
          ActionController::Base.page_cache_directory
      end
    end

    protected

    def set_domain_based_cache_path
      return unless PagesCore.config(:domain_based_cache)
      ActionController::Base.page_cache_directory = File.join(
        ApplicationController.default_page_cache_directory,
        request.domain
      )
    end
  end
end