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require 'rails/railtie/configuration'

module Rails
  class Engine
    class Configuration < ::Rails::Railtie::Configuration
      attr_reader :root
      attr_writer :middleware, :eager_load_paths, :autoload_once_paths, :autoload_paths
      attr_accessor :plugins, :asset_path

      def initialize(root=nil)
        super()
        @root = root
        @generators = app_generators.dup
      end

      # Returns the middleware stack for the engine.
      def middleware
        @middleware ||= Rails::Configuration::MiddlewareStackProxy.new
      end

      # Holds generators configuration:
      #
      #   config.generators do |g|
      #     g.orm             :datamapper, :migration => true
      #     g.template_engine :haml
      #     g.test_framework  :rspec
      #   end
      #
      # If you want to disable color in console, do:
      #
      #   config.generators.colorize_logging = false
      #
      def generators #:nodoc
        @generators ||= Rails::Configuration::Generators.new
        yield(@generators) if block_given?
        @generators
      end

      def paths
        @paths ||= begin
          paths = Rails::Paths::Root.new(@root)
          paths.add "app",                 :eager_load => true, :glob => "*"
          paths.add "app/controllers",     :eager_load => true
          paths.add "app/helpers",         :eager_load => true
          paths.add "app/models",          :eager_load => true
          paths.add "app/mailers",         :eager_load => true
          paths.add "app/views"
          paths.add "lib",                 :load_path => true
          paths.add "lib/tasks",           :glob => "**/*.rake"
          paths.add "config"
          paths.add "config/environments", :glob => "#{Rails.env}.rb"
          paths.add "config/initializers", :glob => "**/*.rb"
          paths.add "config/locales",      :glob => "*.{rb,yml}"
          paths.add "config/routes",       :with => "config/routes.rb"
          paths.add "db"
          paths.add "db/migrate"
          paths.add "db/seeds",            :with => "db/seeds.rb"
          paths.add "public"
          paths.add "public/javascripts"
          paths.add "public/stylesheets"
          paths.add "vendor",              :load_path => true
          paths.add "vendor/plugins"
          paths
        end
      end

      def root=(value)
        @root = paths.path = Pathname.new(value).expand_path
      end

      def eager_load_paths
        @eager_load_paths ||= paths.eager_load
      end

      def autoload_once_paths
        @autoload_once_paths ||= paths.autoload_once
      end

      def autoload_paths
        @autoload_paths ||= paths.autoload_paths
      end

      def compiled_asset_path
        asset_path % "" if asset_path
      end
    end
  end
end