url.coffee

Spooky = require 'spooky'
module.exports = (robot) ->
  robot.hear /(https?:\/\/.*)$/i, (msg) ->
    url = RegExp.$1
    spooky = new Spooky
      child:
        command: './node_modules/.bin/casperjs'
      casper:
        logLevel: 'debug',
        verbose: true
    , (err)  ->
      if err
        e = new Error 'Failed to init SpookyJS'
        e.details = err
        throw e

      spooky.on 'error', (e, stack) ->
        console.error(e)
        if (stack)
          console.log(stack)

      spooky.on 'console', (log) ->
        if (log.lastIndexOf('Unsafe JavaScript attempt', 0) == 0)
          return
        console.log(log)

      spooky.start url, ->
        titles = @evaluate ->
          items = document.querySelectorAll("title")
          Array::map.call items, (e) ->
            e.innerHTML
        console.log(titles.join("\n"))
        msg.send(titles.join("\n"))

      spooky.run ->
        @exit()