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module Uclass
  module Settings

    def self.included(klass)
      klass.class_eval do
        extend ModelClassMethods

        has_many :settings, :as => :resource

        def has_setting?(key)
          !setting(key).nil?
        end

        def setting(key)
          settings.where(:key => key.to_s).first.value rescue nil
        end

        def method_missing(method_id, *arguments, &block)
          if method_id != :id
            setting(method_id) || super
          else
            super
          end
        end
      end
    end

    module ModelClassMethods

      def update_settings!
        setting_keys = first.settings.collect(&:key)
        (name.constantize::SETTINGS.keys - setting_keys).each do |new_key|
          all.each {|object| object.settings.create(:key => new_key, :value => name.constantize::SETTINGS[new_key][:default])}
        end
      end

    end

  end
end