nodejs googleapis example

index.js

const google = require('googleapis');

const KEY = require('./mykey.json');

getAllUsers();

/* CREATE CONNECTION, get instance of jwtClient  */
function connect() {
  return new Promise((yep, nope) => {
    const jwtClient = new google.auth.JWT(
      KEY.client_email,
      null,
      KEY.private_key,
      ['https://www.googleapis.com/auth/admin.directory.user'],
      'adminuser@mydomain.com'
    );

    jwtClient.authorize((err) => {
      if(err) {
        nope(err);
      } else {
        yep(jwtClient);
      }
    });
  });
}

/* List first 100 users, client is jwtClient instance */
function listUsers(client) {
  return new Promise((yep, nope) => {
    google.admin('directory_v1').users.list({
      auth: client,
      domain: 'mydomain.com',
    }, (err, response) => {
      if (err) {
        return nope(err);
      }
      return yep(response);
    });
  });
}
/* Get all users using asynchronous code with promise */
function getAllUsers() {
  return connect().then((client) => (listUsers(client)));
}