(Delphi ActiveX) 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 for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
pdfData: TChilkatBinData;
crypt: TChilkatCrypt2;
md5Hash: WideString;
sbResponseBody: TChilkatStringBuilder;

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

rest := TChilkatRest.Create(Self);

// 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

bTls := 1;
port := 443;
bAutoReconnect := 1;
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.
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.
pdfData := TChilkatBinData.Create(Self);
success := pdfData.LoadFile('qa_data/pdf/sample.pdf');

// Get the MD5 hash of the PDF data.
crypt := TChilkatCrypt2.Create(Self);
crypt.HashAlgorithm := 'md5';
crypt.EncodingMode := 'base64';
md5Hash := crypt.HashBdENC(pdfData.ControlInterface);

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

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

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

rest.AddHeader('Content-Type','application/octet-stream');
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestBd('POST','/Feeds/2009-01-01',pdfData.ControlInterface,sbResponseBody.ControlInterface);
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

if (rest.ResponseStatusCode <> 200) then
  begin
    // Examine the request/response to see what happened.
    Memo1.Lines.Add('response status code = ' + IntToStr(rest.ResponseStatusCode));
    Memo1.Lines.Add('response status text = ' + rest.ResponseStatusText);
    Memo1.Lines.Add('response header: ' + rest.ResponseHeader);
    Memo1.Lines.Add('response body: ' + sbResponseBody.GetAsString());
    Memo1.Lines.Add('---');
    Memo1.Lines.Add('LastRequestStartLine: ' + rest.LastRequestStartLine);
    Memo1.Lines.Add('LastRequestHeader: ' + rest.LastRequestHeader);
  end;

// Examine the XML returned in the response body.
Memo1.Lines.Add(sbResponseBody.GetAsString());
Memo1.Lines.Add('----');
Memo1.Lines.Add('Success.');
end;