Refactor and add undo.

lib/match.rb

@@ -1,6 +1,7 @@
 class Match
   def initialize
-    @one, @two = Player.new('Player One'), Player.new('Player Two')
+    @one, @two = Player.new(:one, name: 'Player One'),
+                 Player.new(:two, name: 'Player Two')
   end
 
   def add_point(colour)
@@ -14,6 +15,11 @@ class Match
     end
   end
 
+  def undo_point(colour)
+    player = players[colour]
+    player.score.decrement if player.score.value > 0
+  end
+
   def reset_scores
     @one.score.reset
     @two.score.reset

lib/player.rb

@@ -1,11 +1,15 @@
 class Player
   include Redis::Objects
 
+  attr_reader :id
+
+  value :name
   counter :score
   counter :games
 
-  def initialize(name)
-    @name = name
+  def initialize(id, attr = {})
+    @id = id
+    self.name = attr[:name]
   end
 
   def has_beaten(player)
@@ -13,12 +17,8 @@ class Player
   end
 
   def attributes
-    { name: @name,
+    { name: self.name.value,
       score: self.score.value,
       games: self.games.value }
   end
-
-  def id
-    @name.downcase.gsub(/[^a-z]/, '-')
-  end
 end

public/tags/scores.tag

@@ -13,6 +13,7 @@
   </div>
 
   <script>
+
     this.players = opts.players;
 
     channel.bind('update_scores', function(data) {

scoreboard.rb

@@ -5,7 +5,7 @@ Dotenv.load
 
 require 'json'
 
-require 'sinatra'
+require 'sinatra/base'
 require 'pusher'
 
 require 'redis'
@@ -22,34 +22,48 @@ Pusher.url = "http://#{ENV['PUSHER_KEY']}:#{ENV['PUSHER_SECRET']}@api.pusherapp.
 
 class Scoreboard < Sinatra::Base
 
-  @@match = Match.new
-
   get '/' do
-    erb :index, locals: { scores: @@match.scores }
+    erb :index, locals: { scores: match.scores }
   end
 
   put '/reset_scores' do
-    @@match.reset_scores
-    @@match.reset_games
+    match.reset_scores
+    match.reset_games
     push_scores
   end
 
   put '/red_scores' do
-    @@match.add_point(:red)
+    match.add_point(:red)
     push_scores
   end
 
   put '/blue_scores' do
-    @@match.add_point(:blue)
+    match.add_point(:blue)
+    push_scores
+  end
+
+  put '/red_undo' do
+    match.undo_point(:red)
+    push_scores
+  end
+
+  put '/blue_undo' do
+    match.undo_point(:blue)
     push_scores
   end
 
   get '/scores' do
-    JSON @@match.scores
+    JSON match.scores
   end
 
   def push_scores
-    Pusher['scores'].trigger('update_scores', @@match.scores.to_json)
+    Pusher['scores'].trigger('update_scores', match.scores.to_json)
+  end
+
+  private
+
+  def match
+    Match.new
   end
 
 end