refactored source code, work on pixiv integration

app/logical/sources/site.rb

@@ -1,18 +1,36 @@
 module Sources
   class Site
     attr_reader :url, :strategy
-    delegate :artist_name, :profile_url, :image_url, :tags, :to => :strategy
+    delegate :get, :site_name, :artist_name, :artist_alias, :profile_url, :image_url, :tags, :artist_record, :unique_id, :to => :strategy
+    
+    def self.strategies
+      [Strategies::Fc2, Strategies::NicoSeiga, Strategies::Pixa, Strategies::Pixiv, Strategies::Tinami, Strategies::Default]
+    end
     
     def initialize(url)
       @url = url
       
-      case url
-      when /pixiv\.net/
-        @strategy = Strategies::Pixiv.new(url)
-        
-      else
-        @strategy = Strategies::Default.new(url)
+      Site.strategies.each do |strategy|
+        if strategy.url_match?(url)
+          @strategy = strategy.new(url)
+          break
+        end
       end
     end
+    
+    def to_json
+      return {
+        :artist_name => artist_name,
+        :profile_url => profile_url,
+        :tags => tags,
+        :danbooru_name => artist_record.first.try(:name),
+        :danbooru_id => artist_record.first.try(:id),
+        :unique_id => unique_id
+      }.to_json
+    end
+    
+    def available?
+      strategy.present?
+    end
   end
 end