twenty_one.rb

require 'pry'

module Hand
  attr_accessor :hand

  def initialize
    @hand = []
  end
end

class Deck
  SUIT = %w(C D H S)
  RANK = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 'J', 'Q', 'K', 'A']

  attr_accessor :cards

  def initialize
    @cards = []
    create_deck
    shuffle_deck
  end

  def create_deck
    SUIT.each do |suit|
      RANK.each do |rank|
        card = Card.new(suit, rank)
        cards << card
      end
    end
  end

  def shuffle_deck
    cards.shuffle!
  end

  def deal_cards(player, dealer)
    2.times do
      player.hand << cards.shift
      dealer.hand << cards.shift
    end
  end
end

class Card
  attr_reader :suit, :rank

  def initialize(suit, rank)
    @suit = suit
    @rank = rank
  end
end

class Player
  include Hand

  attr_accessor :name

  def initialize
    set_name
    super
  end

  def set_name
    puts 'Please enter your name:'
    answer = nil
    loop do
      answer = gets.chomp
      break unless answer.nil?
      puts 'Please enter a valid name.'
    end
    @name = answer
  end
end

class Dealer
  include Hand

  attr_reader :name

  def initialize
    @name = 'Dealer'
    super
  end
end

class GameEngine
  attr_accessor :deck, :player, :dealer

  def initialize
    @deck = Deck.new
    @player = Player.new
    @dealer = Dealer.new
  end

  def play
    deck.deal_cards(player, dealer)
    p player
    p dealer
  end
end

GameEngine.new.play