module Admin::ReferencesHelper

def _display_name
  case params[:type]
  when 'filters'
    filter ? filter.filter_name : t('select.none')
  when 'tags'
    class_of_page.display_name
  end
end

def class_of_page
  @page_class ||= (params[:class_name].blank? ? 'Page' : params[:class_name]).constantize
end

def filter
  @filter ||= begin
    TextFilter.find_descendant(params[:filter_name])
  end
end

def filter_reference
  if filter.blank?
    'There is no filter on the current page part.'
  else
    if filter.description.blank?
      'There is no documentation on this filter.'
    else
      filter.description
    end
  end
end

def tag_reference
  String.new.tap do |output|
    class_of_page.tag_descriptions.sort.each do |tag_name, description|
      value = t("desc.#{tag_name.gsub(':', '-')}").match('desc') ? description : t("desc.#{tag_name.gsub(':', '-')}")
      output << render(partial: 'admin/references/tag_reference.haml',
                       locals: { tag_name: tag_name,
                                 description: RedCloth.new(TrustyCms::Taggable::Util.strip_leading_whitespace(value)).to_html })
    end
  end
end