(Objective-C) Create Restricted Data Token (RDT)

See more Amazon SP-API Examples

Returns a Restricted Data Token (RDT) for one or more restricted resources that you specify.

For more information, see https://developer-docs.amazon.com/sp-api/docs/tokens-api-v2021-03-01-reference#post-tokens2021-03-01restricteddatatoken

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#import <CkoAuthAws.h>
#import <CkoRest.h>
#import <CkoJsonObject.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.

CkoAuthAws *authAws = [[CkoAuthAws alloc] init];
authAws.AccessKey = @"AWS_ACCESS_KEY";
authAws.SecretKey = @"AWS_SECRET_KEY";
authAws.ServiceName = @"execute-api";
// Use the region that is correct for your needs.
authAws.Region = @"eu-west-1";

CkoRest *rest = [[CkoRest alloc] init];
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
// The sandbox endpoint (sandbox.sellingpartnerapi-eu.amazon.com) fails.
// Use the production endpoint and see the note below.
BOOL success = [rest Connect: @"sellingpartnerapi-eu.amazon.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

success = [rest SetAuthAws: authAws];

// Load the previously obtained LWA access token.
// See Fetch SP-API LWA Access Token
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
success = [jsonToken LoadFile: @"qa_data/tokens/sp_api_lwa_token.json"];
if (success == NO) {
    NSLog(@"%@",@"Failed to load LWA access token.");
    return;
}

// Add the x-amz-access-token request header.
NSString *lwa_token = [jsonToken StringOf: @"access_token"];
[rest ClearAllHeaders];
[rest AddHeader: @"x-amz-access-token" value: lwa_token];

// We're going to send a POST with the following JSON body:

// {
//   "restrictedResources": [
//     {
//       "method": "GET",
//       "path": "/orders/v0/orders",
//       "dataElements": ["buyerInfo", "shippingAddress"]
//     }
//   ]
// }

// Use this online tool to generate code from sample JSON: 
// Generate Code to Create JSON

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"restrictedResources[0].method" value: @"GET"];
[json UpdateString: @"restrictedResources[0].path" value: @"/orders/v0/orders"];
[json UpdateString: @"restrictedResources[0].dataElements[0]" value: @"buyerInfo"];
[json UpdateString: @"restrictedResources[0].dataElements[1]" value: @"shippingAddress"];

CkoStringBuilder *sbRequest = [[CkoStringBuilder alloc] init];
[json EmitSb: sbRequest];

CkoStringBuilder *sbResponse = [[CkoStringBuilder alloc] init];
NSString *uri = @"/tokens/2021-03-01/restrictedDataToken";
success = [rest FullRequestSb: @"POST" uriPath: uri requestBody: sbRequest responseBody: sbResponse];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// ------------------------------------------------------------------------------------
// Note: Using the sandbox endpoint, such as sandbox.sellingpartnerapi-eu.amazon.com
// results in a response status code of 400 with the following error:
// [{"code":"InvalidInput","message":"Could not match input arguments"}]
// Getting a restricted data token seems to only work with the production endpoint.
// ------------------------------------------------------------------------------------

// Examine the response status.
int statusCode = [rest.ResponseStatusCode intValue];
if (statusCode != 200) {
    NSLog(@"%@%d",@"Response status code: ",statusCode);
    NSLog(@"%@%@",@"Response status text: ",rest.ResponseStatusText);
    NSLog(@"%@",@"Response body: ");
    NSLog(@"%@",[sbResponse GetAsString]);
    NSLog(@"%@",@"Failed.");
    return;
}

NSLog(@"%@",[sbResponse GetAsString]);

// If successful, gets a JSON response such as the following:

// {
//   "expiresIn": 3600,
//   "restrictedDataToken": "Atz.sprdt|AYAB.....TQ="
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

CkoJsonObject *jsonResp = [[CkoJsonObject alloc] init];
[jsonResp LoadSb: sbResponse];

int expiresIn = [[jsonResp IntOf: @"expiresIn"] intValue];
NSString *restrictedDataToken = [jsonResp StringOf: @"restrictedDataToken"];

// Save the RDT for subsequent use..
success = [jsonResp WriteFile: @"qa_data/tokens/sp_api_rdt_token.json"];

NSLog(@"%@",@"Success!");