require 'fiona7/mode_switch/abstract_mode_switch'

module Fiona7
  module ModeSwitch
    class Views < AbstractModeSwitch
      def standalone
        self.reorder_view_paths(self.scrivito_sdk_path, self.fiona_connector_path)
      end

      def legacy
        self.reorder_view_paths(self.fiona_connector_path, self.scrivito_sdk_path)
      end

      protected
      def scrivito_sdk_path
        Gem.loaded_specs['scrivito_sdk'].full_name
      end

      def fiona_connector_path
        Gem.loaded_specs['infopark_fiona_connector'].full_name
      end

      def reorder_view_paths(first, second)
        view_paths     = ActionController::Base.view_paths
        paths          = view_paths.map(&:to_s)
        internal_paths = view_paths.send(:paths)

        first_index    = paths.index {|path| path =~ /#{Regexp.escape first}\/app\/views/ }
        second_index   = paths.index {|path| path =~ /#{Regexp.escape second}\/app\/views/ }

        if first_index > second_index
          internal_paths[first_index], internal_paths[second_index] = internal_paths[second_index], internal_paths[first_index]
        end
      end
    end
  end
end