module ApplicationHelper
  include Twitter::TwitterText::Autolink

  def atom_id(id)
    "tag:rsstweet@nanaya.pro,2014:#{id}"
  end

  def expand_url(text, urls)
    text.gsub /https?:\/\/t\.co\/[A-Za-z0-9]+/ do |url|
      expanded = urls[url]

      case expanded
        when nil then url
        when Hash then expanded[:url]
        else expanded
      end
    end
  end

  def status_url(tweet)
    status_url_base tweet[:user][:username], tweet[:id]
  end

  def status_url_base(username, id)
    "https://twitter.com/#{username.presence || '_'}/status/#{id}"
  end
end