Noosfero/noosfero

module DisplayHelper
  def themed_path(file)
    if File.exists?(File.join(Rails.root, "public", theme_path, file))
      File.join(theme_path, file)
    else
      file
    end
  end

  def price_span(price, options = {})
    content_tag "span",
                number_to_currency(price, unit: environment.currency_unit, delimiter: environment.currency_delimiter, separator: environment.currency_separator),
                options
  end

  def link_to_tag(tag, html_options = {})
    link_to font_awesome(:tag, tag.name), { controller: "search", action: "tag", tag: tag.name }, html_options
  end

  def link_to_category(category, full = true, html_options = {})
    name = full ? category.full_name(" → ") : category.name
    link_to name, Noosfero.url_options.merge(controller: "search", action: "category_index", category_path: category.path.split("/"), host: category.environment.default_hostname), html_options
  end

  def txt2html(txt)
    ret = txt.strip
             .gsub(/\s*\n\s*\n\s*/, "\r<p/>\r")
             .gsub(/\s*\n\s*/, "\n<br/>\n")
             .gsub(/\r/, "\n")
             .gsub(/(^|\s)(www\.[^\s]+|https?:\/\/[^\s]+)/) do
      pre_char, href = $1, $2
      href = "http://" + href if !href.match /^https?:/
      content = safe_join(href.gsub(/^https?:\/\//, "").scan(/.{1,4}/), "&#x200B;".html_safe)
      pre_char +
        content_tag(:a, content, href: href, target: "_blank",
                                 rel: "nofolow", onclick: "return confirm('%s')".html_safe %
                      _("Are you sure you want to visit this web site?"))
    end
    ret.html_safe
  end
end