DOGBOT

dogbot.rb

class Dogbot
  attr_accessor :dogpile

  def initialize(&block)
    @dogpile = []

    instance_eval(&block)
  end

  def pet_doggos
    @dogpile.each { |dog| puts "#{dog.name} says \"#{dog.bark}\"" }
  end

  def play_with_doggos
    @dogpile.each { |dog| puts "#{dog.name} can #{dog.play}" }
  end

  def good_dog(name, &block)
    doggo = Doggo.new(name: name, bark: 'bow wow', &block)
    @dogpile << doggo
  end

  def bad_dog(name, &block)
    doggo = Doggo.new(name: name, bark: 'grrr', &block)
    @dogpile << doggo
  end
end


class Doggo
  attr_accessor :name, :bark, :tricks

  def initialize(name:, bark: '', &block)
    @name = name
    @bark = bark
    @tricks = []

    instance_eval(&block) if block_given?
  end

  def teach(trick, slang = '')
    @tricks << trick
    
    if trick == 'talk like human' && !slang.empty?
      @bark = slang
    end
  end

  def play
    @tricks.empty? ? 'do nothing' : @tricks.sample
  end
end


# Test Dogbot
dogbot = Dogbot.new do
  bad_dog 'Gracie' do
    teach 'fetch'
    teach 'shake'
    teach 'bake'
    teach 'talk like human'
  end

  good_dog 'Spencer'

  bad_dog 'Muffin' do
    teach 'sit'
    teach 'talk like human', 'Howdy'
  end
end

dogbot.pet_doggos
dogbot.play_with_doggos