Dart Requires Chilkat v11.0.0+

VoiceBase -- Upload a Media File with a JSON Configuration

See more VoiceBase Examples

This example uploads a media file and also provides a configuration file. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat HTTP API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // Insert your Bearer token here:
  final accessToken = 'VOICEBASE_TOKEN';

  final http = CkHttp();

  final req = CkHttpRequest();
  req.httpVerb = 'POST';
  req.path = '/v2-beta/media';
  req.contentType = 'multipart/form-data';

  // Add the access (bearer) token to the request, which is a header
  // having the following format:
  // Authorization: Bearer <userAccessToken>
  final sbAuth = CkStringBuilder();
  sbAuth.append('Bearer ');
  sbAuth.append(accessToken);
  req.addHeader('Authorization', sbAuth.getAsString());

  try {
    req.addFileForUpload2('media', 'qa_data/wav/msg_123_abc.wav', 'audio/x-wav');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // This is the JSON of the configuration to be added as a parameter to the upload:
  // (Obviously, if you want a callback, you would use a URL that goes to your own web server..)

  // 	{ 
  // 	   "configuration":{ 
  // 	      "publish":{ 
  // 	         "callbacks":[
  // 	            { 
  // 	               "url":"https://www.chilkatsoft.com/dss/update_vm_transcription.asp",
  // 	               "method":"POST",
  // 	               "include":[
  // 	                  "transcripts",
  // 	                  "keywords",
  // 	                  "topics",
  // 	                  "metadata"
  // 	               ]
  // 	            }
  // 	         ]
  // 	      },
  // 	      "keywords":{ 
  // 	         "groups":[]
  // 	      }
  // 	   }
  // 	}

  // This code produces the above JSON.
  final json = CkJsonObject();
  json.updateString('configuration.publish.callbacks[0].url', 'https://www.chilkatsoft.com/dss/update_vm_transcription.asp');
  json.updateString('configuration.publish.callbacks[0].method', 'POST');
  json.updateString('configuration.publish.callbacks[0].include[0]', 'transcripts');
  json.updateString('configuration.publish.callbacks[0].include[1]', 'keywords');
  json.updateString('configuration.publish.callbacks[0].include[2]', 'topics');
  json.updateString('configuration.publish.callbacks[0].include[3]', 'metadata');

  final jConfig = CkJsonObject();
  json.objectOf2('configuration', jConfig);

  final jKeywords = CkJsonObject();
  jConfig.appendObject2('keywords', jKeywords);

  final jGroups = CkJsonArray();
  jKeywords.appendArray2('groups', jGroups);

  // Add the configuration JSON to the upload.
  req.addParam('configuration', json.emit());

  // Do the upload..
  final resp = CkHttpResponse();
  try {
    http.httpSReq('apis.voicebase.com', 443, true, req, resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Examine the response status code and body.
  print('Response status code = ${resp.statusCode}');

  // The response should be JSON, even if an error.
  json.load(resp.bodyStr);
  json.emitCompact = false;

  print(json.emit());

  // A successful response will have a status code = 200
  if (resp.statusCode != 200) {
    print('Failed.');
  } else {
    print('mediaId: ${json.stringOf('mediaId')}');
    print('href: ${json.stringOf('_links.self.href')}');
    print('status: ${json.stringOf('status')}');
    print('Success.');
  }

  // Here is an example of a successful response:

  // 	{ 
  // 	  "_links": { 
  // 	    "self": { 
  // 	      "href": "/v2-beta/media/856a1e85-c847-4c3c-b7a4-6cf15cd51db4"
  // 	    }
  // 	  },
  // 	  "mediaId": "856a1e85-c847-4c3c-b7a4-6cf15cd51db4",
  // 	  "status": "accepted",
  // 	  "metadata": {}
  // 	}
}