Refactoring ReleaseGroup model

lib/parsers/base.rb

@@ -5,11 +5,21 @@ module MusicBrainz
       def get_by_name(name)
         case name
         when :artist_model
-          return { :const => MusicBrainz::Parsers::Artist, :method => :model }
+          { :const => MusicBrainz::Parsers::Artist, :method => :model }
         when :artist_search
-          return { :const => MusicBrainz::Parsers::Artist, :method => :search }
+          { :const => MusicBrainz::Parsers::Artist, :method => :search }
         when :artist_release_groups
-          return { :const => MusicBrainz::Parsers::Artist, :method => :release_groups }
+          { :const => MusicBrainz::Parsers::Artist, :method => :release_groups }
+        when :release_group_model
+          { :const => MusicBrainz::Parsers::ReleaseGroup, :method => :model }
+        when :release_group_releases
+          { :const => MusicBrainz::Parsers::ReleaseGroup, :method => :releases }
+        when :release_model
+          { :const => MusicBrainz::Parsers::Release, :method => :model }
+        when :release_tracks
+          { :const => MusicBrainz::Parsers::Release, :method => :tracks }
+        when :track_model
+          { :const => MusicBrainz::Parsers::Track, :method => :model }
         end
       end
     end

lib/parsers/release.rb

@@ -0,0 +1,20 @@
+# -*- encoding: utf-8 -*-
+
+module MusicBrainz
+  module Parsers
+    class Release < Base
+      class << self
+        def model(xml)
+          {
+            :id => safe_get_attr(xml, nil, "id") || safe_get_attr(xml, "release-group", "id"),
+            :title => safe_get_value(xml, "title"),
+            :status => safe_get_value(xml, "status"),
+            :country => safe_get_value(xml, "country"),
+            :format => safe_get_value(xml, "medium-list > medium > format"),
+            :date => safe_get_value(xml, "date")
+          }
+        end
+      end
+    end
+  end
+end

lib/parsers/release_group.rb

@@ -6,13 +6,21 @@ module MusicBrainz
       class << self
         def model(xml)
           {
-            :id => safe_get_attr(xml, nil, "id"),
-            :type => safe_get_attr(xml, nil, "type"),
+            :id => safe_get_attr(xml, nil, "id") || safe_get_attr(xml, "release-group", "id"),
+            :type => safe_get_attr(xml, nil, "type") || safe_get_attr(xml, "release-group", "type"),
             :title => safe_get_value(xml, "title"),
             :disambiguation => safe_get_value(xml, "disambiguation"),
             :first_release_date => safe_get_value(xml, "first-release-date")
           }
         end
+
+        def releases(xml)
+          releases = []
+          xml.css("release").each do |r|
+            releases << MusicBrainz::Parsers::Release.model(r)
+          end
+          releases
+        end
       end
     end
   end

lib/parsers/track.rb

@@ -0,0 +1,11 @@
+# -*- encoding: utf-8 -*-
+
+module MusicBrainz
+  module Parsers
+    class Track < Base
+      class << self
+
+      end
+    end
+  end
+end