Better themeing support!!

app/lib/themes.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'singleton'
+require 'yaml'
+
+class Themes
+  include Singleton
+
+  def initialize
+    result = Hash.new
+    Dir.glob(Rails.root.join('app', 'javascript', 'themes', '*', 'theme.yml')) do |path|
+      data = YAML.load_file(path)
+      if data['pack'] && data['name']
+        result[data['name']] = data
+      end
+    end
+    @conf = result
+  end
+
+  def names
+    @conf.keys
+  end
+end

app/lib/user_settings_decorator.rb

@@ -25,6 +25,7 @@ class UserSettingsDecorator
     user.settings['auto_play_gif'] = auto_play_gif_preference
     user.settings['system_font_ui'] = system_font_ui_preference
     user.settings['noindex'] = noindex_preference
+    user.settings['theme'] = theme_preference
   end
 
   def merged_notification_emails
@@ -67,6 +68,10 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_noindex'
   end
 
+  def theme_preference
+    settings['setting_theme']
+  end
+  
   def boolean_cast_setting(key)
     settings[key] == '1'
   end