ruby - bob (2)

ruby/bob/bob.rb

@@ -1,18 +1,54 @@
+# class Bob
 class Bob
   def self.hey(remark)
-    remark.gsub!(/[[:space:]]+/, '')
-    if remark == ''
+    response = Response.new(remark)
+    if silence?(remark)
+      response.silence
+    elsif shout?(remark)
+      response.shouted_at
+    elsif question?(remark)
+      response.question
+    else
+      response.default
+    end
+  end
+
+  def self.silence?(remark)
+    remark.strip.empty?
+  end
+
+  def self.shout?(remark)
+    remark.upcase == remark && remark =~ /[A-Za-z]+/
+  end
+
+  def self.question?(remark)
+    remark.strip.end_with?('?')
+  end
+end
+
+# Response
+class Response
+  def initialize(remark)
+    @remark = remark.strip
+  end
+
+  def silence
     'Fine. Be that way!'
-    elsif remark.upcase == remark and remark =~ /[A-Za-z]+/
-      if remark[-1] == '?'
+  end
+
+  def shouted_at
+    if @remark.end_with?('?')
       "Calm down, I know what I'm doing!"
     else
       'Whoa, chill out!'
     end
-    elsif remark[-1] == '?'
+  end
+
+  def question
     'Sure.'
-    else
+  end
+
+  def default
     'Whatever.'
   end
 end
-end