module ExtraImageHelpers

  # creates a div with image link, thumbnail and caption
  # TODO make this work for non-image assets (pdf on 'verein' page)
  def image_with_thumb(name, options={})
    caption = options.delete(:caption)
    full_path  = "/img/#{name}"

    thumb_name = options.delete(:thumbnail) || default_thumbnail_for(name)
    thumb_path = "/img/#{thumb_name}"

    # oh boy, padrino-helpers has problems with nested content_for... FIXME
    thumb_tag   = image_tag(thumb_path, options)
    image_link  = content_tag(:a, thumb_tag, href: full_path)
    caption_tag = content_tag(:p, caption)

    content_tag :div, [image_link, caption_tag].join("\n")
  end

  private

  def default_thumbnail_for(image_name_with_ext)
    name, ext = image_name_with_ext.split(".")
    "#{name}_klein.#{ext}"
  end

end