refactored sources

app/logical/sources/strategies/base.rb

@@ -2,6 +2,7 @@ module Sources
   module Strategies
     class Base
       attr_reader :url
+      attr_reader :artist_name, :profile_url, :image_url, :tags
       
       def self.url_match?(url)
         false
@@ -11,6 +12,7 @@ module Sources
         @url = url
       end
       
+      # No remote calls are made until this method is called.
       def get
         raise NotImplementedError
       end
@@ -19,26 +21,6 @@ module Sources
         raise NotImplementedError
       end
       
-      def artist_name
-        raise NotImplementedError
-      end
-      
-      def tags
-        raise NotImplementedError
-      end
-      
-      def profile_url
-        raise NotImplementedError
-      end
-      
-      def image_url
-        raise NotImplementedError
-      end
-      
-      def artist_alias
-        nil
-      end
-      
       def unique_id
         artist_name
       end