Any updates on the best way to create a HTML archive of a static site?

I’ve been doing this recently, and this is how I did it。

 def serve
    file_path = File.expand_path(
      params[:path]+"."+params[:format],
      File.join(File.dirname(__FILE__), "../../public")
    )
    if File.file?(file_path)
      send_file file_path, type: "text/html", disposition: "inline"
    else
      render plain: "404 Not Found", status: 404
    end
  end