FW: FW: FW:

forwards_from_grannie.rb

require 'forwardable'

class Said
  attr_reader :msg

  def initialize(msg = nil)
    @msg = (msg || '').freeze
  end

  def loud_enough?
    (msg =~ /[a-z]/).nil?
  end

  def bye?
    loud_enough? && @msg == 'BYE'
  end

  def blank?
    @msg.strip.empty?
  end

  def self.nothing
    new(nil)
  end
end

class Grannie
  extend Forwardable

  def initialize(question = Said.nothing)
    ask question
  end

  def ask(question)
    @question = question
  end

  def response
    return if bye?

    return 'What was that, honey?' if @question.blank?

    return "NO, NOT SINCE #{year}!" if @question.loud_enough?

    'HUH!? SPEAK UP, SONNY!'
  end

  def_delegator :@question, :bye?

  private

  def year
    Random.rand(1930..1951)
  end
end

grannie = Grannie.new
puts grannie.response

loop do
  grannie.ask(Said.new(gets.chomp))
  puts grannie.response
  break if grannie.bye?
end