Noosfero/noosfero

class BreadcrumbsPlugin::ContentBreadcrumbsBlock < Block
  settings_items :show_cms_action, type: :boolean, default: true
  settings_items :show_profile, type: :boolean, default: true
  settings_items :show_section_name, type: :boolean, default: true

  attr_accessible :show_cms_action, :show_profile, :show_section_name

  def self.description
    N_("<p>Display a breadcrumb of the current content navigation.</p><p>You could choose if the breadcrumb is going to appear in the cms editing or not.</p> <p>There is either the option of display the profile location in the breadcrumb path.</p>")
  end

  def self.short_description
    N_("Breadcrumb")
  end

  def self.pretty_name
    N_("Breadcrumbs Block")
  end

  def help
    N_("This block displays breadcrumb trail.")
  end

  def cacheable?
    false
  end

  def api_content(params = {})
    links = []
    params = HashWithIndifferentAccess.new(params)
    links << profile_link(params)
    links << page_links(params)
    { links: links.compact.flatten }
  end

  private

    def profile_link(params)
      return nil if (params || {})[:profile].blank?

      profile = environment.profiles.find_by(identifier: params[:profile])
      return nil if profile.blank?

      { name: profile.name, url: "/#{profile.identifier}" }
    end

    def page_links(params)
      return nil if (params || {})[:page].blank?

      page = owner.articles.find_by(path: params[:page])
      return nil if page.blank?

      page_trail(page)
    end

    def page_trail(page)
      links = page.ancestors.reverse.map { |p| { name: p.title, url: p.full_path } } || []
      links << { name: page.title, url: page.full_path }
    end
end