class Site
  extend Forwardable

  attr_accessor :pages
  attr_accessor :page_list
  attr_accessor :root
  attr_accessor :menu

  def_delegators :@config, :title, :pagination_size

  def initialize
    @config = SiteConfiguration.load("#{Rails.root}/site.rb")
  end

  def load_pages
    @root      = nil
    @pages     = {}
    @page_list = StaticPageArray.new
    @menu      = Menu.new('root')
    @config.mount_points.each do |mp|
      add_mount_point(mp)
      mp.reset_timestamp
    end
  end

  def reload_pages_if_needed
    if @pages.nil? || @config.pages_changed?
      puts "Reloading pages ................."
      load_pages
    end
  end

  #def menu
  #  @menu ||= Menu.new
  #end

  def find_pages(filter)
    StaticPage.find(self, filter)
  end

  def find_page(filter)
    find_pages(filter)
  end

  def all_pages
    @page_list
  end

  private

  def add_mount_point(mp)
    # create base_page
    base_page = begin
      if mp.path == '/'
        @root = StaticPage.new(nil, 'root', mp.directory)
      else
        name = File.basename(mp.path)
        page = StaticPage.new(find_parent(mp.path), name, File.join(mp.directory, name))
        add_page(page)
        page
      end
    end
    base_page.mount_point = mp

    # load menu and locals
    menu.load(mp.menu_file) if mp.menu_file
    I18n.load_path += Dir[File.join(mp.locales_dir, '/*.{rb,yml,yaml}')] if mp.locales_dir

    # add the full directory tree
    base_page.scan do |page|
      add_page(page)
    end
  end

  def add_page(page)
    @pages[page.name] = page
    @pages[page.path.join('/')] = page
    @page_list << page
  end

  def find_parent(path)
    so_far = []
    path.split('/').compact.each do |path_segment|
      so_far << path_segment
      if page = @pages[so_far.join('/')]
        return page
      end
    end
    return @root
  end

end