module UserNotificationsHelper

  def indent(text, by=2)
    spacer = " " * by
    result = ""
    text.each_line do |line|
      result << spacer << line
    end
    result
  end

  def correct_top_margin(html, desired)
    fragment = Nokogiri::HTML.fragment(html)
    if para = fragment.css("p:first").first
      para["style"] = "margin-top: #{desired};"
    end
    fragment.to_html.html_safe
  end

  def logo_url
    logo_url = SiteSetting.logo_url
    if logo_url !~ /http(s)?\:\/\//
      logo_url = "#{Discourse.base_url}#{logo_url}"
    end
    logo_url
  end

  def html_site_link
    "<a href='#{Discourse.base_url}'>#{@site_name}</a>"
  end

  def email_excerpt(html)
    raw Sanitize.clean(HTML_Truncator.truncate(html, 300), Sanitize::Config::RELAXED)
  end
end