refactor blackjack version 3

refactor_3.rb

require 'pry'

class Game
  puts "\nWELCOME to BLACKJACK!\n"
 
  SUITS = ['♠', '♣', '♥', '♦']
  VALUES = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A']

  def initialize
    @deck = []
    @dealer = []
    @player = []
    build_deck
    deal_cards
    display_cards(@player)
  end

  def build_deck
    SUITS.each do |suit|
      VALUES.each do |value|
        @deck.push(value + suit)
      end
    end
    @deck.shuffle!    
  end

  def deal_cards
    2.times{@player << @deck.pop}
    2.times{@dealer << @deck.pop}
    score(@player)
  end

  def display_cards(someone)
    if someone == @player
      puts "Player's hand: "
      puts @player
      puts "Player's score is #{score(@player)}"
      still_playing
    else
      score(@dealer)
      puts "Dealer's hand: "
      puts @dealer
    end
  end

  def still_playing
    if score(@player) > 21
      puts 'Busted! Game over.'
      return nil
    end
    puts ''
    puts "Hit or Stay (h/s): "
    input = gets.chomp
    if input == 'h'
      hit(@player)
    elsif input == 's'
      dealers_turn
    else 
      puts "invalid input"
      still_playing
    end
  end

  def hit(someone)
    someone << @deck.pop
    score(someone)
    display_cards(someone)
  end

  def dealers_turn
    display_cards(@dealer)
    score(@dealer)
      puts "Dealer's score: #{score(@dealer)}"
      if score(@dealer) < 17
        hit(@dealer)
        dealers_turn
      elsif score(@dealer) >= 17 && score(@dealer) <= 21
        final_results
      elsif score(@dealer) > 21
        puts "Dealer busts- you win!"
      end
  end

  def score(someone)
    hand_score = 0
    has_ace = false

    someone.each do |card|
      card = card.chop
      if card == 'J' || card == 'Q' || card == 'K'
        hand_score += 10
      elsif card == 'A'
        has_ace = true
        hand_score += 1
      else
        hand_score += card.to_i
      end
    end
    if hand_score <= 11 && has_ace
      hand_score += 10
    end
    return hand_score
    display_cards
  end

  def final_results
    puts ''
    puts "Player's score: #{score(@player)}"
    puts "Dealer's score: #{score(@dealer)}"
    if score(@dealer) > score(@player)
      puts "Dealer wins!"
    elsif score(@player) > score(@dealer)
      puts "You win!"
    else
      puts "Tie!"
    end
  return nil
  end

end

blackjack = Game.new
blackjack.build_deck