YoURLS.rb

#!/usr/bin/env ruby

  require 'cinch'
  require 'open-uri'
  require 'nokogiri'
  require 'cgi'

module Cinch::Plugins  
  class YoURLS
    include Cinch::Plugin
    match(/.*?(http:|https:)/i,method: :urlshortener)

    def initialize(*)
      super
      @yourls = { host: config[:host], secret: config[:secret] }
    end

    # url shortener
    def urlshortener(m)
      debug "Triggered by #{m.user.name}"
      msg = m.message
      urls = URI.extract(msg, ["http","https"])
      if !urls.empty?
        short_url = yourls(urls[0])
        noko = Nokogiri::HTML(open(urls[0]), nil, "UTF-8")
        case urls[0]
          when /[^\s]*?youtube\.com[^\s]*/i
            title = noko.title.strip.split("\n").first
            url_extra = " - #{title}"
          when /[^\s]*?youtu\.be[^\s]*/i
            title = noko.title.strip.split("\n").first
            url_extra = " - #{title}"
          when /[^\s]*?twitter\.com\/(.*)\/(status|statuses)\/.*/i
            user = $1 
            tweet = noko.at_css("div.js-original-tweet p.js-tweet-text").text.gsub(/\n/,' ')
            url_extra = " - @%s: %s" % [user, tweet]
          else
            url_extra = ""
        end
        debug "ShortURL: %s Extra: %s Original: %s Length: %s" % [short_url, url_extra, urls[0], urls[0].length]
        if (!short_url.empty? && urls[0].length > 60)
          m.reply "%s %s" % [short_url, url_extra]
        end
      end
    end

    # yourls shortener
    def yourls(query)
      url = "%s/yourls-api.php?signature=%s&action=shorturl&url=%s" % [@yourls[:host],@yourls[:secret],query]
      res = Nokogiri::XML(open(url))
      shorturl = res.at_css('shorturl').text rescue @yourls_host+res.at_css('keyword').text
      return shorturl
    end
  end
end