class ::Hash
  # this method will recursively search for values starting from "databag/"
  # and replaces them with the values from the databags if present
  def decrypt
    self.each do |key,value|
      if value.instance_of? ::Hash
        # we need to go deeper!
        self[key] = value.decrypt
      elsif value.instance_of? ::String
        # starts with "databag/ ?
        if /databag\//.match(value)
          databag, databag_item, databag_item_key = value.split('/').drop(1)
          if databag and databag_item and databag_item_key
            # replace or skip
            replacement = Chef::EncryptedDataBagItem.load databag, databag_item rescue nil
            self[key] = replacement[databag_item_key] rescue value
          end
        end
      end
    end
  end
end