Active player rotates after hand played

app/controllers/games_controller.rb

@@ -35,6 +35,10 @@ class GamesController < ApplicationController
       card.save
     end
 
+    # TODO: Ensure active player only changes when valid hand is played
+    @game.set_active_player 'next'
+    @game.save
+
     # TODO: add current_hand logic
     # @hand > @game.hand_to_beat
     redirect_to @game

app/models/game.rb

@@ -7,6 +7,11 @@ class Game < ActiveRecord::Base
   accepts_nested_attributes_for :players
   validates :title, presence: true
 
+  # TODO: Simplify to a single attribute
+  alias_attribute :current_player_id, :control_player_id
+  alias_attribute :active_player_id, :control_player_id
+  alias_attribute :active_player, :control_player
+
   def start
     validate_startable
     return false unless startable?
@@ -81,6 +86,17 @@ class Game < ActiveRecord::Base
     players.count >= 4
   end
 
+  def set_active_player(arg)
+    case arg
+    when 'next'
+      self.active_player_id = self.next_player_id
+    end
+  end
+
+  def next_player_id
+    player_ids[(player_ids.index(current_player_id) + 1 ) % player_ids.length]
+  end
+
   # The player whose turn it is
   def control_player
     self.players.find(self.control_player_id)

spec/features/plays_spec.rb

@@ -68,19 +68,26 @@ feature 'Play a hand', type: :feature do
   #   Given I am the current player
   #   When I play a hand
   #   Then the next player becomes the current player
-  scenario 'current player rotates after a valid hand' do
-    skip 'to be implemented'
-    game = setup_game
-    login_as(game.current_player.user, scope: :user)
-    @current_player_id = game.current_player.id
-    @current_player_index = game.players.index(game.current_player)
-    visit game_path game
-    @card_to_play = game.current_player.player_cards.order(:value).first
+  scenario 'active player rotates after a valid hand' do
+    @game = setup_game
+    login_as(@game.active_player.user, scope: :user)
+    @next_player_id = @game.next_player_id
+    @active_player_id = @game.active_player.id
+    @active_player_index = @game.players.index(@game.active_player)
+    visit game_path @game
+    @card_to_play = @game.active_player.player_cards.order(:value).first
     check @card_to_play.to_s
     click_button 'Play Hand'
+    # reload the game object instance
+    @game.reload
     expect(page).to have_content('Played ' + @card_to_play.to_s)
-    expect(game.current_player.id).to_not eq(@current_player_id)
-    expect(game.players.index(game.current_player)).to eq( (@current_player_id + 1) % 2)
+
+    # render active player style
+    expect(page).to have_content(@game.players.find(@next_player_id).user.email + " My Turn")
+
+    # next player is now the active player
+    expect(@game.active_player_id).to_not eq(@active_player_id)
+    expect(@game.active_player_id).to eq(@next_player_id)
   end 
 
   # Scenario: Player can play a valid hand on their turn