(Objective-C) Amazon Translate Text

Demonstrates how to use the AWS Translate service to translate text from one language to another.

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

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

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

CkoAuthAws *authAws = [[CkoAuthAws alloc] init];
authAws.AccessKey = @"AWS_ACCESS_KEY";
authAws.SecretKey = @"AWS_SECRET_KEY";
authAws.Region = @"us-west-2";
authAws.ServiceName = @"translate";
[rest SetAuthAws: authAws];

// URL: https://translate.us-west-2.amazonaws.com/
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
success = [rest Connect: @"translate.us-west-2.amazonaws.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@%d",@"ConnectFailReason: ",[rest.ConnectFailReason intValue]);
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Translate text from English to German
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"SourceLanguageCode" value: @"en"];
[json UpdateString: @"TargetLanguageCode" value: @"de"];
[json UpdateString: @"Text" value: @"This is the text to be translated"];

[rest AddHeader: @"Content-Type" value: @"application/x-amz-json-1.1"];
[rest AddHeader: @"X-Amz-Target" value: @"AWSShineFrontendService_20170701.TranslateText"];

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[json EmitSb: sbRequestBody];
CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"POST" uriPath: @"/" requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

int respStatusCode = [rest.ResponseStatusCode intValue];
if (respStatusCode >= 400) {
    NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",rest.ResponseHeader);
    NSLog(@"%@",@"Response Body:");
    NSLog(@"%@",[sbResponseBody GetAsString]);
    return;
}

CkoJsonObject *jsonResponse = [[CkoJsonObject alloc] init];
[jsonResponse LoadSb: sbResponseBody];
jsonResponse.EmitCompact = NO;

NSLog(@"%@",[jsonResponse Emit]);

// {
//   "SourceLanguageCode": "en",
//   "TargetLanguageCode": "de",
//   "TranslatedText": "Dies ist der zu bersetzende Text"
// }

NSLog(@"%@",[jsonResponse StringOf: @"TranslatedText"]);