(Objective-C) 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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#import <CkoRest.h>
#import <CkoBinData.h>
#import <CkoCrypt2.h>
#import <NSString.h>
#import <CkoStringBuilder.h>

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

BOOL success;

CkoRest *rest = [[CkoRest alloc] init];

// 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

BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
success = [rest Connect: @"mws.amazonservices.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: 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" value: @"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.
CkoBinData *pdfData = [[CkoBinData alloc] init];
success = [pdfData LoadFile: @"qa_data/pdf/sample.pdf"];

// Get the MD5 hash of the PDF data.
CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];
crypt.HashAlgorithm = @"md5";
crypt.EncodingMode = @"base64";
NSString *md5Hash = [crypt HashBdENC: pdfData];

[rest AddQueryParam: @"AWSAccessKeyId" value: @"0PB842ExampleN4ZTR2"];
[rest AddQueryParam: @"Action" value: @"SubmitFeed"];
[rest AddQueryParam: @"FeedType" value: @"_UPLOAD_VAT_INVOICE_"];
[rest AddQueryParam: @"MWSAuthToken" value: @"EXAMPLE-amzn.mws.4ea38b7b-f563-7709-4bae-87aea-EXAMPLE"];

[rest AddQueryParam: @"MarketplaceIdList.Id.1" value: @"ATVExampleDER"];
[rest AddQueryParam: @"SellerId" value: @"A1XExample5E6"];
[rest AddQueryParam: @"ContentMD5Value" value: md5Hash];
[rest AddQueryParam: @"SignatureMethod" value: @"HmacSHA256"];
[rest AddQueryParam: @"SignatureVersion" value: @"2"];
[rest AddQueryParam: @"Version" value: @"2009-01-01"];

// Add the MWS Signature param.  (Also adds the Timestamp parameter using the curent system date/time.)
[rest AddMwsSignature: @"POST" uriPath: @"/Feeds/2009-01-01" domain: @"mws.amazonservices.com" mwsSecretKey: @"YOUR_MWS_SECRET_ACCESS_KEY_ID"];

[rest AddHeader: @"Content-Type" value: @"application/octet-stream"];
CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestBd: @"POST" uriPath: @"/Feeds/2009-01-01" binData: pdfData responseBody: sbResponseBody];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

if ([rest.ResponseStatusCode intValue] != 200) {
    // Examine the request/response to see what happened.
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body: ",[sbResponseBody GetAsString]);
    NSLog(@"%@",@"---");
    NSLog(@"%@%@",@"LastRequestStartLine: ",rest.LastRequestStartLine);
    NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);
}

// Examine the XML returned in the response body.
NSLog(@"%@",[sbResponseBody GetAsString]);
NSLog(@"%@",@"----");
NSLog(@"%@",@"Success.");