etsy api.scala

// this works in play 2.4 with the 1.9.29 version of async http client 

  def securePostMultipart(requestPath: String, etsyToken: RequestToken,
                          fileName: String, file: File, fileMimeType: String,
                          stringParts: (String, String)*): Future[WSResponse] = {
                            
    val fullUrl = "http://foo/bar/zar"

    val parts : List[Part] = List(
      new FilePart(fileName, file, fileMimeType),
      new StringPart("type", fileMimeType)
    )

    val mpre = new MultipartRequestEntity(parts.asJava, new FluentCaseInsensitiveStringsMap)
    val baos = new ByteArrayOutputStream(5 * 1024 * 1024)
    mpre.writeRequest(baos)
    val bytes = baos.toByteArray


    makeEtsyApiCall(
      () => WS.url(fullUrl)
        .sign(OAuthCalculator(etsyKey, etsyToken))
        .withRequestTimeout(etsyApiCallTimeout)
        .withHeaders("Accept" -> "application/json", "Content-Type" -> mpre.getContentType)
        .withQueryString(stringParts: _*)
        .post(bytes)(Writeable.wBytes)
    )
}