first commit

.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-journal
+
+# Ignore all logfiles and tempfiles.
+/log/*
+!/log/.keep
+/tmp

Gemfile

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+source 'https://rubygems.org'
+
+
+gem 'rails', '4.2.3'
+gem 'mysql2'
+gem 'haml'
+group :development, :test do
+  gem 'byebug'
+  gem 'web-console', '~> 2.0'
+  gem 'spring'
+end
+

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionmailer (4.2.3)
+      actionpack (= 4.2.3)
+      actionview (= 4.2.3)
+      activejob (= 4.2.3)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.3)
+      actionview (= 4.2.3)
+      activesupport (= 4.2.3)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.3)
+      activesupport (= 4.2.3)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (4.2.3)
+      activesupport (= 4.2.3)
+      globalid (>= 0.3.0)
+    activemodel (4.2.3)
+      activesupport (= 4.2.3)
+      builder (~> 3.1)
+    activerecord (4.2.3)
+      activemodel (= 4.2.3)
+      activesupport (= 4.2.3)
+      arel (~> 6.0)
+    activesupport (4.2.3)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.3)
+    binding_of_caller (0.7.2)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.2)
+    byebug (8.2.5)
+    concurrent-ruby (1.0.2)
+    debug_inspector (0.0.2)
+    erubis (2.7.0)
+    globalid (0.3.6)
+      activesupport (>= 4.1.0)
+    haml (4.0.7)
+      tilt
+    i18n (0.7.0)
+    json (1.8.3)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
+    mime-types (3.0)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0221)
+    mini_portile2 (2.0.0)
+    minitest (5.8.4)
+    mysql2 (0.3.18)
+    nokogiri (1.6.7.2)
+      mini_portile2 (~> 2.0.0.rc2)
+    rack (1.6.4)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.2.3)
+      actionmailer (= 4.2.3)
+      actionpack (= 4.2.3)
+      actionview (= 4.2.3)
+      activejob (= 4.2.3)
+      activemodel (= 4.2.3)
+      activerecord (= 4.2.3)
+      activesupport (= 4.2.3)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.3)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.7)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.3)
+      loofah (~> 2.0)
+    railties (4.2.3)
+      actionpack (= 4.2.3)
+      activesupport (= 4.2.3)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (11.1.2)
+    spring (1.7.1)
+    sprockets (3.6.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.0.4)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tilt (2.0.2)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    web-console (2.3.0)
+      activemodel (>= 4.0)
+      binding_of_caller (>= 0.7.2)
+      railties (>= 4.0)
+      sprockets-rails (>= 2.0, < 4.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  byebug
+  haml
+  mysql2
+  rails (= 4.2.3)
+  spring
+  web-console (~> 2.0)
+
+BUNDLED WITH
+   1.11.2

README.rdoc

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+== README
+
+This README would normally document whatever steps are necessary to get the
+application up and running.
+
+Things you may want to cover:
+
+* Ruby version
+
+* System dependencies
+
+* Configuration
+
+* Database creation
+
+* Database initialization
+
+* How to run the test suite
+
+* Services (job queues, cache servers, search engines, etc.)
+
+* Deployment instructions
+
+* ...
+
+
+Please feel free to use a different markup language if you do not plan to run
+<tt>rake doc:app</tt>.

Rakefile

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+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require File.expand_path('../config/application', __FILE__)
+
+Rails.application.load_tasks

app/assets/javascripts/application.js

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+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file.
+//
+// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require jquery
+//= require jquery_ujs
+//= require turbolinks
+//= require_tree .

app/assets/javascripts/game.coffee

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+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/application.css

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+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any styles
+ * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
+ * file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */

app/controllers/application_controller.rb

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+class ApplicationController < ActionController::Base
+  # Prevent CSRF attacks by raising an exception.
+  # For APIs, you may want to use :null_session instead.
+  protect_from_forgery with: :exception
+end

app/controllers/game_controller.rb

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+class GameController < ApplicationController
+
+  def index 
+  end
+
+  def start
+    @game = Game.new
+    @game.deal_initial_cards
+    render 'game.html.haml'
+  end
+
+  def hit
+    @game = Game.new(params[:game_id])
+    @game.deal_card(Game::USER[:player])
+    render 'game.html.haml'
+  end
+
+  def stand
+    @game = Game.new(params[:game_id])
+    @game.stand
+    render 'game.html.haml'
+  end
+end

app/helpers/application_helper.rb

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+module ApplicationHelper
+end

app/helpers/game_helper.rb

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+module GameHelper
+end

app/models/card.rb

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+class Card < ActiveRecord::Base
+
+  def self.get_score(user, game_id)
+    cards = Card.where(game_id: game_id, user: user)
+    cards.collect(&:value)
+  end
+
+  def get_value
+    case value
+    when 'A'
+      11
+    when 'K', 'Q', 'J'
+      10
+    else
+      value.to_i
+    end
+  end
+
+end

app/models/game.rb

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+class Game
+
+  attr_reader :id, :player_cards, :dealer_cards, :player_score, :dealer_score, :winner
+
+  USER = {:player => 1, :dealer => 2}
+
+
+  def initialize(id=nil)
+    if id.nil? 
+      @decks = initialize_decks(6)
+      @id = (Card.last and Card.last.game_id + 1) || 0
+      @player_cards = []
+      @dealer_cards = []
+    else
+      @id = id
+      cards = Card.where(game_id: id)
+      @player_cards = cards.select{|card| card.user == USER[:player]}
+      @dealer_cards = cards.select{|card| card.user == USER[:dealer]}
+      @decks = initialize_decks(6, (@player_cards+@dealer_cards).map{|a| a.value})
+      update_scores
+    end
+  end
+
+  def deal_initial_cards
+    2.times { @player_cards << Card.create(user: USER[:player], value: pop_card, game_id: self.id ) }
+    @dealer_cards << Card.create(user: USER[:dealer], value: pop_card, game_id: self.id )
+    update_scores
+    who_won?
+  end
+
+  def deal_card(user)
+    card = Card.create(user: user, value: pop_card, game_id: self.id)
+    if user == USER[:player]
+      @player_cards << card
+    else
+      @dealer_cards << card
+    end
+    update_scores
+    who_won?
+  end
+
+  def stand
+    return if winner.present?
+    while (@dealer_score < 17) do
+      deal_card(USER[:dealer])
+    end
+    @winner = (@player_score > @dealer_score) ? 'Player' : 'Dealer' if winner.blank?
+  end
+
+  private
+
+  def update_scores
+    @player_score = @player_cards.collect {|card| card.get_value }.sum
+    @dealer_score = @dealer_cards.collect {|card| card.get_value }.sum
+  end
+
+  def who_won?
+    if @player_score == 21 || @dealer_score > 21
+      @winner = 'Player'
+    elsif @player_score > 21 || @dealer_score == 21
+      @winner = 'Dealer'
+    end
+  end
+
+  def pop_card
+    @decks.shuffle.delete_at(0)
+  end
+
+  def initialize_decks(num_of_decks, existing_cards=[])
+    ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'K', 'Q', 'J'] * num_of_decks - existing_cards
+  end
+end