class MiniPortile

def files_hashs
  @files.map do |file|
    hash = case file
    when String
      { :url => file }
    when Hash
      file.dup
    else
      raise ArgumentError, "files must be an Array of Stings or Hashs"
    end
    url = hash.fetch(:url){ raise ArgumentError, "no url given" }
    filename = File.basename(url)
    hash[:local_path] = File.join(archives_path, filename)
    hash
  end
end