refactored source code, work on pixiv integration

app/logical/sources/strategies/base.rb

@@ -3,11 +3,23 @@ module Sources
     class Base
       attr_reader :url, :agent
       
+      def self.url_match?(url)
+        false
+      end
+      
       def initialize(url)
         @url = url
         @agent = create_agent
       end
       
+      def get
+        raise NotImplementedError
+      end
+      
+      def site_name
+        raise NotImplementedError
+      end
+      
       def artist_name
         raise NotImplementedError
       end
@@ -24,6 +36,18 @@ module Sources
         raise NotImplementedError
       end
       
+      def artist_alias
+        nil
+      end
+      
+      def unique_id
+        artist_name
+      end
+      
+      def artist_record
+        Artist.other_names_match(artist_name)
+      end
+      
     protected
       def create_agent
         raise NotImplementedError