(Lianja) 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

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

loRest = createobject("CkRest")

// 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

llBTls = .T.
lnPort = 443
llBAutoReconnect = .T.
llSuccess = loRest.Connect("mws.amazonservices.com",lnPort,llBTls,llBAutoReconnect)

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.
loPdfData = createobject("CkBinData")
llSuccess = loPdfData.LoadFile("qa_data/pdf/sample.pdf")

// Get the MD5 hash of the PDF data.
loCrypt = createobject("CkCrypt2")
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")
loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestBd("POST","/Feeds/2009-01-01",loPdfData,loSbResponseBody)
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loPdfData
    release loCrypt
    release loSbResponseBody
    return
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