class Player
 attr_accessor :name
 NAMES = ['R2D2', 'BOB', 'ELISA']
 MOVES = ['rock', 'paper', 'scissors']
 def initialize(name)
   @name = name
 end

 def choose
  puts 'Choose either rock paper or scissors'
 end

end

class Human < Player
  attr_accessor :move
  def initialize
    @name = pick_a_name
  end

  def choose
    super
    loop do
     choice = gets.chomp
      if !Player::MOVES.include? choice
        puts 'Please choose either rock paper or scissors'
        next
      else
        self.move = choice
        puts "#{name} chose #{choice}"
        break
      end
    end
  end

  private

  def pick_a_name
    puts "What is your name"
    answer = gets.chomp
  end
end

class Computer < Player
  attr_accessor :move
  def initialize
    super(Player::NAMES.sample)
  end

  def choose
    self.move = Player::MOVES.sample
    puts "#{name} chose #{move}"
  end

end

class RPSGame
  @@games = nil
  attr_accessor :human, :computer, :score

  def initialize
    @human = Human.new
    @computer = Computer.new
    @score = {human: 0,computer: 0}
  end

  def display_welcome_message
   puts 'Welcome to Rock Paper Scissors'
  end

  def display_goodbye_message
    puts 'Thanks for playing rock paper scissors'
  end

  def play_again?
    puts "Would you like to play again. Type y or n"
    answer = nil
    loop do
      answer = gets.chomp
      break if ['y', 'n'].include? answer.downcase
      puts 'Sorry you have to choose y or n'
    end
    if answer == 'y'
      @@games += 1
      return true
    end
    return false if answer == 'n'
  end

  def play
    display_welcome_message
    loop do
      human.choose
      computer.choose
      display_winner
      break unless play_again?
    end
    display_goodbye_message
  end
end