require 'singleton' class Formatter include Singleton include ActionView::Helpers::TextHelper include ActionView::Helpers::SanitizeHelper def format(status) return reformat(status) unless status.local? html = status.text html = encode(html) html = link_urls(html) html = link_mentions(html, status.mentions) html.html_safe end def reformat(status) sanitize(status.content, tags: %w(a br p), attributes: %w(href rel)) end private def encode(html) HTMLEntities.new.encode(html) end def link_urls(html) auto_link(html, link: :urls, html: { rel: 'nofollow noopener' }) end def link_mentions(html, mentions) html.gsub(Account::MENTION_RE) do |match| acct = Account::MENTION_RE.match(match)[1] mention = mentions.find { |mention| mention.account.acct.eql?(acct) } return match if mention.nil? mention_html(match, mention.account) end end def mention_html(match, account) "#{match.split('@').first}@#{account.username}" end end