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require 'rails/generators/erb'
require 'rails/generators/resource_helpers'

module Erb
  module Generators
    class ScaffoldGenerator < Base
      include Rails::Generators::ResourceHelpers

      argument :attributes, :type => :array, :default => [], :banner => "field:type field:type"

      class_option :layout,    :type => :boolean
      class_option :singleton, :type => :boolean, :desc => "Supply to skip index view"

      def create_root_folder
        empty_directory File.join("app/views", controller_file_path)
      end

      def copy_view_files
        views = available_views
        views.delete("index") if options[:singleton]

        views.each do |view|
          filename = filename_with_extensions(view)
          template filename, File.join("app/views", controller_file_path, filename)
        end
      end

      def copy_layout_file
        return unless options[:layout]
        template filename_with_extensions(:layout),
          File.join("app/views/layouts", controller_class_path, filename_with_extensions(controller_file_name))
      end

    protected

      def available_views
        %w(index edit show new _form)
      end
    end
  end
end