// Copyright 2014 Google LLC

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

'use strict';

const {google} = require('googleapis');

const compute = google.compute('v1');

/**

* The `google.auth.getClient` method creates the appropriate type of credential client for you,

* depending upon whether the client is running in Google App Engine, Google Compute Engine, a

* Managed VM, or on a local developer machine. This allows you to write one set of auth code that

* will work in all cases. It most situations, it is advisable to use the getClient method rather

* than creating your own JWT or Compute client directly.

*

* Note: In order to run on a local developer machine, it is necessary to download a private key

* file to your machine, and to set a local environment variable pointing to the location of the

* file. Create a service account using the Google Developers Console using the section APIs & Auth.

* Select "Generate new JSON key" and download the resulting file. Once this is done, set the

* `GOOGLE_APPLICATION_CREDENTIALS` environment variable to point to the location of the .json file.

*

* See also:

* https://developers.google.com/accounts/docs/application-default-credentials

*/

// Get the appropriate type of credential client, depending upon the runtime environment.

async function main() {

// The `getClient` method will choose a service based authentication model

const auth = new google.auth.GoogleAuth({

// Scopes can be specified either as an array or as a single, space-delimited string.

scopes: ['https://www.googleapis.com/auth/compute'],

});

// Obtain the current project Id

const project = await auth.getProjectId();

// Get the list of available compute zones for your project

const res = await compute.zones.list({project, auth});

console.log(res.data);

}

main().catch(console.error);