lib/competition.rb in Competition-0.0.1 vs lib/competition.rb in Competition-0.0.2

@@ -1,4 +1,69 @@
 require "competition/engine"
+require 'active_support/concern'
 
 module Competition
+  extend ActiveSupport::Concern
+
+  module ClassMethods
+    @@score_with    = nil
+    @@score_if      = nil
+    @@score_amount  = nil
+    def has_score
+      self.class_eval {
+        has_one :score, :as => :scoreable, :class_name => "Competition::Score"
+      }
+    end
+
+    def keeps_score options={}
+      self.class_eval {
+        has_many :score_entries, :as => :score_entryable, :class_name => "Competition::ScoreEntry"
+      }
+
+      options[:on].each do |event|
+        case event
+        when :create
+          self.class_eval {
+            after_create :add_score
+          }
+        when :update
+          self.class_eval {
+            after_save :add_score
+          }
+        end
+      end
+      @@score_with    = options[:for]
+      @@score_if      = options[:if]
+      @@score_amount  = options[:amount]
+    end
+
+    def score_with
+      @@score_with
+    end
+
+    def score_if
+      @@score_if
+    end
+
+    def score_amount
+      @@score_amount
+    end
+  end
+
+  def add_score
+    return unless score?
+    score = Competition::Score.find_or_create_by_scoreable_type_and_scoreable_id(score_with.class.to_s, score_with.id)
+    Competition::ScoreEntry.create(:amount => score_amount, :score_id => score.id, :score_entryable_type => self.class.to_s, :score_entryable_id => self.id )
+  end
+
+  def score_amount
+    @score_amount ||= self.class.score_amount.call(self)
+  end
+
+  def score?
+    @score_if ||= self.class.score_if.call(self)
+  end
+
+  def score_with
+    @score_with ||= self.class.score_with.call(self)
+  end
 end