(Visual FoxPro) Amazon MWS Upload Invoice

Demonstrates how to upload an invoice using _UPLOAD_VAT_INVOICE_FeedType to submit an invoice for an order.

For more information, see https://m.media-amazon.com/images/G/03/B2B/invoice-uploader-developer-documentation.pdf

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL lnSuccess
LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL loPdfData
LOCAL loCrypt
LOCAL lcMd5Hash
LOCAL loSbResponseBody

* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')

* Connect to the Amazon MWS REST server.
* 
* Make sure to connect to the correct Amazon MWS Endpoint, otherwise
* you'll get an HTTP 401 response code.
* 
* See Amazon MWS endpoints and MarketplaceId values

lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("mws.amazonservices.com",lnPort,lnBTls,lnBAutoReconnect)

loRest.Host = "mws.amazonservices.com"

* MarketplaceList.Id parameter �This should be the marketplace in which the order was placed. Only one marketplace must be used per order.T
* Here are the marketplace ID's
* Spain: A1RKKUPIHCS9HS
* UK: A1F83G8C2ARO7P
* France: A13V1IB3VIYZZH
* Germany: A1PA6795UKMFR9
* Italy: APJ6JRA9NG5V4
* ...
* (See https://docs.developer.amazonservices.com/en_US/dev_guide/DG_Endpoints.html)

* FeedOptions parameter � Seller can input key value pairs to give important metadata along with the PDF invoice.
loRest.AddQueryParam("FeedOptions","metadata:orderid=206-2341234-3455465;metadata:invoicenumber=INT-3431-XJE3;metadata:documenttype=Invoice")

* Load the PDF invoice file that is to be the body of the HTTP POST request.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.BinData')
loPdfData = CreateObject('Chilkat.BinData')
lnSuccess = loPdfData.LoadFile("qa_data/pdf/sample.pdf")

* Get the MD5 hash of the PDF data.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Crypt2')
loCrypt = CreateObject('Chilkat.Crypt2')
loCrypt.HashAlgorithm = "md5"
loCrypt.EncodingMode = "base64"
lcMd5Hash = loCrypt.HashBdENC(loPdfData)

loRest.AddQueryParam("AWSAccessKeyId","0PB842ExampleN4ZTR2")
loRest.AddQueryParam("Action","SubmitFeed")
loRest.AddQueryParam("FeedType","_UPLOAD_VAT_INVOICE_")
loRest.AddQueryParam("MWSAuthToken","EXAMPLE-amzn.mws.4ea38b7b-f563-7709-4bae-87aea-EXAMPLE")

loRest.AddQueryParam("MarketplaceIdList.Id.1","ATVExampleDER")
loRest.AddQueryParam("SellerId","A1XExample5E6")
loRest.AddQueryParam("ContentMD5Value",lcMd5Hash)
loRest.AddQueryParam("SignatureMethod","HmacSHA256")
loRest.AddQueryParam("SignatureVersion","2")
loRest.AddQueryParam("Version","2009-01-01")

* Add the MWS Signature param.  (Also adds the Timestamp parameter using the curent system date/time.)
loRest.AddMwsSignature("POST","/Feeds/2009-01-01","mws.amazonservices.com","YOUR_MWS_SECRET_ACCESS_KEY_ID")

loRest.AddHeader("Content-Type","application/octet-stream")
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestBd("POST","/Feeds/2009-01-01",loPdfData,loSbResponseBody)
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loPdfData
    RELEASE loCrypt
    RELEASE loSbResponseBody
    CANCEL
ENDIF

IF (loRest.ResponseStatusCode <> 200) THEN
    * Examine the request/response to see what happened.
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    ? "---"
    ? "LastRequestStartLine: " + loRest.LastRequestStartLine
    ? "LastRequestHeader: " + loRest.LastRequestHeader
ENDIF

* Examine the XML returned in the response body.
? loSbResponseBody.GetAsString()
? "----"
? "Success."

RELEASE loRest
RELEASE loPdfData
RELEASE loCrypt
RELEASE loSbResponseBody