lib/cards_lib/card.rb in cards_lib-0.0.5 vs lib/cards_lib/card.rb in cards_lib-0.0.6

@@ -1,11 +1,13 @@
 module CardsLib
   class Card
-    def initialize(face)
+    include Comparable
+    def initialize(face, ranker = Ranker)
       raise InvalidCardFace, "face cannot be blank" if face.to_s.empty?
       @suit = nil
       @rank = nil
+      @ranker = ranker
       if face.is_a? Hash
         @suit = face.fetch(:suit) { nil }
         @rank = face.fetch(:rank) { nil }
         if @rank && @suit
           str = ""
@@ -15,10 +17,11 @@
           @face = [@rank, str, @suit].join
         end
       else
         @face = face
       end
+      @ranker = ranker.new(rank)
     end
 
     def face
       @face   
     end
@@ -28,11 +31,40 @@
     end
 
     def rank
       @rank || @face[0]
     end
+
+    def <=>(other)
+      @ranker.<=>(other)
+    end
   end
 
   class InvalidCardFace < Exception
 
+  end
+
+  class Ranker
+    include Comparable
+    attr :rank, :ranks, :rank_lookup
+    def initialize(
+      rank = nil,
+      ranks: "A23456789TJQK".split(''),
+      rank_lookup: ->rank_face{
+        r = @ranks.index(rank_face).to_i + 1
+        # r = 10 if r > 10
+        r
+      })
+      @rank = rank
+      @ranks = ranks
+      @rank_lookup = rank_lookup
+    end
+
+    def <=>(item)
+      @rank_lookup[self.rank] <=> @rank_lookup[item.rank]
+    end
+
+    def inspect
+      @rank
+    end
   end
 end