Contents

module IntercomRails

  module AutoInclude
    def intercom_rails_auto_include
      Filter.filter(self)
    end

    class Filter

      CLOSING_BODY_TAG = %r{</body>}

      def self.filter(controller)
        auto_include_filter = new(controller)
        return unless auto_include_filter.include_javascript?

        auto_include_filter.include_javascript!
      end

      attr_reader :controller

      def initialize(kontroller)
        @controller = kontroller 
      end

      def include_javascript! 
        response.body = response.body.gsub(CLOSING_BODY_TAG, intercom_script_tag.output + '\\0')
      end

      def include_javascript?
        !intercom_script_tag_called_manually? &&
        html_content_type? &&
        response_has_closing_body_tag? &&
        intercom_script_tag.valid?
      end

      private
      def response
        controller.response
      end

      def html_content_type?
        response.content_type == 'text/html'
      end

      def response_has_closing_body_tag?
        !!(response.body[CLOSING_BODY_TAG])
      end

      def intercom_script_tag_called_manually?
        controller.instance_variable_get(SCRIPT_TAG_HELPER_CALLED_INSTANCE_VARIABLE)
      end

      def intercom_script_tag
        @script_tag ||= ScriptTag.new(:find_current_user_details => true, :find_current_company_details => true, :controller => controller)
      end

    end

  end

end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
intercom-rails-0.2.10	lib/intercom-rails/auto_include_filter.rb
intercom-rails-0.2.9	lib/intercom-rails/auto_include_filter.rb