deck.rb

class Deck
  attr_accessor :cards

  def initialize
    build_every_possible_card
  end

  def build
    self.cards =
    suits.map do |suit|
      ranks.map do |rank|
        colors.map do |color|
          Card.new(suit, rank, color)
        end
      end
    end.flatten
  end

  def shuffle
    @cards.shuffle!
  end

  def deal
    @cards.shift
  end

  def suits
    raise 'you need to override this method'
  end

  def ranks
    raise 'you need to override this method'
  end

  def colors
    raise 'you need to override this method'
  end

  class Card
    attr_accessor :suit, :rank, :color

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


class FrenchDeck < Deck

  def suits
    ['clubs', 'hearts', 'spades']
  end

  def ranks
    ['ace', 2, 3, 4, 5 ,6 ,7 ,8 ,9 ,10, 'jack', 'queen', 'king']
  end

  def colors
    ['black', 'red']
  end
end

class ItalianDeck < Deck

  def suits
  end

  def ranks
  end
end