(Xojo Plugin) 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.

Dim success As Boolean

Dim rest As New 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

Dim bTls As Boolean
bTls = True
Dim port As Int32
port = 443
Dim bAutoReconnect As Boolean
bAutoReconnect = True
success = rest.Connect("mws.amazonservices.com",port,bTls,bAutoReconnect)

rest.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.
success = rest.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.
Dim pdfData As New Chilkat.BinData
success = pdfData.LoadFile("qa_data/pdf/sample.pdf")

// Get the MD5 hash of the PDF data.
Dim crypt As New Chilkat.Crypt2
crypt.HashAlgorithm = "md5"
crypt.EncodingMode = "base64"
Dim md5Hash As String
md5Hash = crypt.HashBdENC(pdfData)

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

success = rest.AddQueryParam("MarketplaceIdList.Id.1","ATVExampleDER")
success = rest.AddQueryParam("SellerId","A1XExample5E6")
success = rest.AddQueryParam("ContentMD5Value",md5Hash)
success = rest.AddQueryParam("SignatureMethod","HmacSHA256")
success = rest.AddQueryParam("SignatureVersion","2")
success = rest.AddQueryParam("Version","2009-01-01")

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

success = rest.AddHeader("Content-Type","application/octet-stream")
Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestBd("POST","/Feeds/2009-01-01",pdfData,sbResponseBody)
If (rest.LastMethodSuccess <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

If (rest.ResponseStatusCode <> 200) Then
    // Examine the request/response to see what happened.
    System.DebugLog("response status code = " + Str(rest.ResponseStatusCode))
    System.DebugLog("response status text = " + rest.ResponseStatusText)
    System.DebugLog("response header: " + rest.ResponseHeader)
    System.DebugLog("response body: " + sbResponseBody.GetAsString())
    System.DebugLog("---")
    System.DebugLog("LastRequestStartLine: " + rest.LastRequestStartLine)
    System.DebugLog("LastRequestHeader: " + rest.LastRequestHeader)
End If

// Examine the XML returned in the response body.
System.DebugLog(sbResponseBody.GetAsString())
System.DebugLog("----")
System.DebugLog("Success.")