/**

* Copyright 2022 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

*

* https://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.

*/

// [START calendar_quickstart]

import path from 'node:path';

import process from 'node:process';

import {authenticate} from '@google-cloud/local-auth';

import {google} from 'googleapis';

// The scope for reading calendar events.

const SCOPES = ['https://www.googleapis.com/auth/calendar.readonly'];

// The path to the credentials file.

const CREDENTIALS_PATH = path.join(process.cwd(), 'credentials.json');

/**

* Lists the next 10 events on the user's primary calendar.

*/

async function listEvents() {

// Authenticate with Google and get an authorized client.

const auth = await authenticate({

scopes: SCOPES,

keyfilePath: CREDENTIALS_PATH,

});

// Create a new Calendar API client.

const calendar = google.calendar({version: 'v3', auth});

// Get the list of events.

const result = await calendar.events.list({

calendarId: 'primary',

timeMin: new Date().toISOString(),

maxResults: 10,

singleEvents: true,

orderBy: 'startTime',

});

const events = result.data.items;

if (!events || events.length === 0) {

console.log('No upcoming events found.');

return;

}

console.log('Upcoming 10 events:');

// Print the start time and summary of each event.

for (const event of events) {

const start = event.start?.dateTime ?? event.start?.date;

console.log(`${start} - ${event.summary}`);

}

}

await listEvents();

// [END calendar_quickstart]