cleverest.rb

require 'net/http'
require 'uri'
require 'enumerator'

class Array
  def to_h
    Hash[*enum_with_index.to_a.flatten]
  end
end

class Bot
  ResponseRegexp = /<!-- Begin Response !-->\s+(.*)\s+<!-- End Response !-->/
  FormRegexp     = /<INPUT NAME=([a-zA-Z0-9]+?) TYPE=hidden VALUE="(.*?)">/
  Url            = URI.parse('http://www.cleverbot.com/webserviceform')

  def initialize
    @response = ""
    @form     = {}
  end
  
  def send(message = nil)
    @form["STIMULUS"] = message if message
    result            = Net::HTTP.post_form(Url, @form)
    @form             = result.body.scan(FormRegexp).to_h
    @response         = result.body.scan(ResponseRegexp).to_s
  end
end

bots    = 2.times.map { Bot.new }
message = nil
i       = 0

loop do
  message = bots[i].send(message)
  puts "Bot #{i + 1}: #{message}"
  
  i = (i + 1) % bots.size
end