module FolderHelper

  def list_articles(articles, recursive = false)
    articles.map {|item| display_article_in_listing(item, recursive, 0)}.join('')
  end

  def display_article_in_listing(article, recursive = false, level = 0)
    result = content_tag(
      'div',
      link_to((' ' * (level * 4) ) + image_tag(icon_for_article(article)) + article.name, article.url),
      :class => 'sitemap-item'
    )
    if recursive
      result + article.children.map {|item| display_article_in_listing(item, recursive, level + 1) }.join('')
    else
      result
    end
  end

  def icon_for_article(article)
    icon = article.icon_name
    if (icon =~ /\//)
      icon
    else
      if File.exists?(File.join(RAILS_ROOT, 'public', 'images', 'icons-mime', "#{icon}.png"))
        "icons-mime/#{icon}.png"
      else
        "icons-mime/unknown.png"
      end
    end
  end

end