I am following Node Google Calendar Quickstart
I'm trying to get a list of events from a calendar and using auth0 for app login. On my calendar page using api credentials created in api console I run the sample code from the quickstart, the authorization request is sent and I can see in the terminal the request for the auth code. But when I follow the auth flow to allow my app to access my google account, once I have set the permissions to allowed the page redirects me back to auth0 and not to the page with the auth code. This is an old project I came back to and I have read about refreshing tokens but can't seem to figure out why I cant get the auth code to input into the terminal to authorize my app.
my credentials.json
{
"installed": {
"client_id": "xxxx.apps.googleusercontent.com",
"project_id": "quickstart-xxxx",
"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_secret": "xxxx",
"redirect_uris": [
"https://xxxx.auth0.com",
"https://xxxx.auth0.com/login/callback"
],
"javascript_origins": [
"https://xxxx.auth0.com"
]
}
}
router.js
router.get('/calendar', secured(), (req, res, next) => {
const fs = require('fs');
const readline = require('readline');
const { google } = require('googleapis');
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/calendar'];
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
const TOKEN_PATH = 'token.json';
// Load client secrets from a local file.
fs.readFile('credentials.json', (err, content) => {
if (err) return console.log('Error loading client secret file:', err);
// Authorize a client with credentials, then call the Google Calendar API.
authorize(JSON.parse(content), listEvents);
});
/**
* Create an OAuth2 client with the given credentials, and then execute the
* given callback function.
* @param {Object} credentials The authorization client credentials.
* @param {function} callback The callback to call with the authorized client.
*/
function authorize(credentials, callback) {
// eslint-disable-next-line camelcase
const { client_secret, client_id, redirect_uris } = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(
client_id, client_secret, redirect_uris[0]);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, (err, token) => {
if (err) return getAccessToken(oAuth2Client, callback);
oAuth2Client.setCredentials(JSON.parse(token));
callback(oAuth2Client);
});
}
/**
* Get and store new token after prompting for user authorization, and then
* execute the given callback with the authorized OAuth2 client.
* @param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
* @param {getEventsCallback} callback The callback for the authorized client.
*/
function getAccessToken(oAuth2Client, callback) {
const authUrl = oAuth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
});
console.log('Authorize this app by visiting this url:', authUrl);
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
rl.question('Enter the code from that page here: ', (code) => {
rl.close();
oAuth2Client.getToken(code, (err, token) => {
if (err) return console.error('Error retrieving access token', err);
oAuth2Client.setCredentials(token);
// Store the token to disk for later program executions
fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
if (err) return console.error(err);
console.log('Token stored to', TOKEN_PATH);
});
callback(oAuth2Client);
});
});
}
const userProfile = req.user;
if (userProfile.emails[0].value == process.env.GC_USER_EMAIL) {
opCalendarLink = process.env.GOOGLE_CALENDAR_ID_GC;
} else if (userProfile.emails[0].value == process.env.NODEMAILER_WTCT_PRODUCTION) {
opCalendarLink = process.env.GOOGLE_CALENDAR_ID_GC + '&' + process.env.GOOGLE_CALENDAR_ID_AS + '&' + process.env.GOOGLE_CALENDAR_ID_AV + '&color=%23D6AE00&color=%3C995B08&color=%231F753C&showTitle=0';
/* opCalendarLink = process.env.GOOGLE_CALENDAR_ID_GC + '&' + process.env.GOOGLE_CALENDAR_ID_AS + '&' + process.env.GOOGLE_CALENDAR_ID_AV + '&color=%23D6AE00&color=%3C995B08&color=%231F753C&showTitle=0';
*/} else if (userProfile.emails[0].value == process.env.AS_USER_EMAIL) {
opCalendarLink = process.env.GOOGLE_CALENDAR_ID_AS;
} else if (userProfile.emails[0].value == process.env.AV_USER_EMAIL) {
opCalendarLink = process.env.GOOGLE_CALENDAR_ID_AV;
}// else (opCalendarLink = process.env.GOOGLE_CALENDAR_ID_WTCT);
/**
* Lists the next 10 events on the user's primary calendar.
* @param {google.auth.OAuth2} auth An authorized OAuth2 client.
*/
async function listEvents(auth) {
const calendar = google.calendar({ version: 'v3', auth });
calendar.events.list({
calendarId: opCalendarLink,
timeMin: (new Date()).toISOString(),
maxResults: 10,
singleEvents: true,
orderBy: 'startTime',
}, (err, res) => {
if (err) return console.log('The list 10 events calendar API returned an error: ' + err);
events = res.data.items;
if (events.length) {
console.log('Upcoming 10 events:');
events.map((event, i) => {
const start = event.start.dateTime || event.start.date;
console.log(`${start} - ${event.summary}`);
});
} else {
console.log('No upcoming events found.');
}
});
}
// opCalendarLink = process.env.NODEMAILER_WTCT_PRODUCTION; // FOR TESTING PER OP CAL RENDERING
// switch calendar link depending on OP logged in
res.render('calendar', {
viewTitle: 'Booking Calendar',
eventList: events,
opCalendarLink: opCalendarLink,
userProfile: userProfile,
});
});
I can login and out of the app using auth0 with no problem but when trying to authorize the calendar request I keep getting directed back to auth0 instead of the page with the code.
I have a feeling this is to do with the token being expired due to this being an old project I started up again but cant for the life of me figure out whey I can re-authorize my my app.
I have deleted the old token.json to allow a new one to be created but every time I try follow the link I get redirected to auth0. Any advise on why I keep getting redirected back to auth0 after authorizing the app? Can I put the code in manually? If so where?
If I re-enable my old token.json then I get invalid_grant hence trying to re-authorize.
token.jsonand tried again? – Jose Vasquez