Bot to retrieve voice message about telegram HOT 2 CLOSED

class FileBot(token: String) extends ExampleBot(token) // just for testing
  with Polling
  with Commands {

  onMessage { implicit msg =>

    using(_.voice) { voice =>
      request(GetFile(voice.fileId)).onComplete {
        case Success(file) =>
          file.filePath match {

            case Some(filePath) =>
              // See https://core.telegram.org/bots/api#getfile
              val url = s"https://api.telegram.org/file/bot${token}/${filePath}"

              for {
                res <- Http().singleRequest(HttpRequest(uri = Uri(url)))
                if res.status.isSuccess()
                bytes <- Unmarshal(res).to[ByteString]
              } /* do */ {
                reply(s"File with ${bytes.size} bytes received.")
              }

            case None =>
              println("No file_path was returned")
          }

        case Failure(e) =>
          println("Exception: " + e) // poor's man logging
      }
    }
  }
}