Dart

WaTrend Send WhatsApp Text

See more WaTrend Examples

Send a WhatsApp text. Dart

import 'package:chilkat/chilkat.dart';

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

  final http = CkHttp();

  // Use your actual access token instead of 555555555555555555555555555555
  final req = CkHttpRequest();
  req.addParam('number', '84933313xxx');
  req.addParam('type', 'text');
  req.addParam('message', 'This is a test message');
  req.addParam('instance_id', '609ACF283XXXX');
  req.addParam('access_token', '555555555555555555555555555555');

  // Note: The WaTrend online documentation indicate a POST should be used.
  // However, it seems you might actually need to send a GET request.
  // It is unclear.  
  // If a GET is neeed, you would just send to the URL w/ query params like this:
  final sbUrl = CkStringBuilder();
  sbUrl.append('https://app.watrend.com/api/send.php?');
  sbUrl.append(req.getUrlEncodedParams());
  final responseBodyStr = http.quickGetStr(sbUrl.getAsString());
  // The responseBodyStr contains the JSON response from the server..

  req.httpVerb = 'POST';
  req.contentType = 'application/x-www-form-urlencoded';

  final resp = CkHttpResponse();
  try {
    http.httpReq('https://app.watrend.com/api/send.php', req, resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final sbResponseBody = CkStringBuilder();
  resp.getBodySb(sbResponseBody);

  final respStatusCode = resp.statusCode;
  print('Response Status Code = $respStatusCode');
  if (respStatusCode >= 400) {
    print('Response Header:');
    print(resp.header);
    print('Failed.');
    return;
  }

  print(resp.bodyStr);

  // Both success and failed responses use 200 status code.

  // A success response contains this JSON in the response body:
  // {"status":"success", ... }

  // A failed response will contain something like this:
  // {"status":"error","message":"License Invalidated"}

  final jResp = CkJsonObject();
  jResp.loadSb(sbResponseBody);

  final status = jResp.stringOf('status');
  print('status: $status');
}