React Native

Get Access Token for Google Tasks using Service Account JSON Key

See more Google Tasks Examples

Demonstrates how to get an access token for the Google Tasks API using a Service Account JSON key. React Native

import { AuthGoogle, FileAccess, Socket } from '@chilkat/react-native'

async function chilkatExample() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // First load the JSON key into a string.
  const fac = new FileAccess();
  let jsonKey: string;
  try {
    jsonKey = fac.readEntireTextFile('qa_data/googleSvcAccountKeys/ChilkatCloud-48f7737c7505.json', 'utf-8');
  } catch {
    console.log(fac.lastErrorText);
    return;
  }

  // A JSON private key should look like this:

  // {
  //   "type": "service_account",
  //   "project_id": "chilkatcloud",
  //   "private_key_id": "48f7737c7505bb88eee6a20d09993e10605d466e",
  //   "private_key": "-----BEGIN PRIVATE KEY----- ... -----END PRIVATE KEY-----\n",
  //   "client_email": "pip-564@chilkatcloud.iam.gserviceaccount.com",
  //   "client_id": "109982228323456925225",
  //   "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  //   "token_uri": "https://oauth2.googleapis.com/token",
  //   "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  //   "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/pip-564%40chilkatcloud.iam.gserviceaccount.com"
  // }

  const gAuth = new AuthGoogle();
  gAuth.jsonKey = jsonKey;

  // Choose the scope for read/write access.
  gAuth.scope = 'https://www.googleapis.com/auth/tasks';

  // Request an access token that is valid for this many seconds.
  gAuth.expireNumSeconds = 3600;

  gAuth.subEmailAddress = '';

  // Connect to www.googleapis.com using TLS
  const tlsSock = new Socket();
  try {
    await tlsSock.connectAsync('www.googleapis.com', 443, true, 5000);
  } catch {
    console.log(tlsSock.lastErrorText);
    return;
  }

  // Send the request to obtain the access token.
  try {
    await gAuth.obtainAccessTokenAsync(tlsSock);
  } catch {
    console.log(gAuth.lastErrorText);
    return;
  }

  // Examine the access token:
  console.log(`Access Token: ${gAuth.accessToken}`);

  // Save our access token to a file.
  fac.writeEntireTextFile('qa_data/tokens/googleTasks.txt', gAuth.accessToken, 'utf-8', false);
}