// Copyright 2018 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 path = require('path');

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

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

async function runSample() {

// Obtain user credentials to use for the request

const auth = new google.auth.GoogleAuth({

keyfilePath: path.join(__dirname, '../oauth2.keys.json'),

scopes: 'https://www.googleapis.com/auth/gmail.readonly',

});

const client = await auth.getClient();

google.options({auth: client});

const res = await gmail.users.messages.list({userId: 'me'});

console.log(res.data);

return res.data;

}

if (module === require.main) {

runSample().catch(console.error);

}

module.exports = runSample;