How do I request access to a user's calendar once, then query events without having to request access again? Is there an access key that can grant continuous access as long as it isn't revoked?
I am currently using the google-calendar module in a nodejs app running express + mongodb.
The example below shows partial code for making the OAuth request and redirecting back to the app. This works great. What I want though is once I have access, to be able to query the user's events any time I want. This will be used in a booking app which, once a user registers their public Google Calendar, allows others to see their availability.
I have looked at the Google Calendar API documentation, but I can't figure out what is needed for the ongoing access I need.
Configuration:
var GoogleCalendar = require('google-calendar');
var google_calendar = new GoogleCalendar.GoogleCalendar(config.google.clientId, config.google.clientSecret, 'http://localhost:3000/authentication');
Display route:
app.get('/display', function(req, res) {
// redirect user to Google Authentication
var access_token = req.session.access_token;
if(!access_token) {
req.session.authReturn = req.url;
return res.redirect('/authentication');
}
google_calendar.listCalendarList(access_token, function(err, calendarList) {
// do something with the calendar events...
}
...
Authenticate route:
app.all('/authentication', function(req, res){
// Redirect the user to Google's authentication form
if(!req.query.code){
google_calendar.getGoogleAuthorizeTokenURL(function(err, redirectUrl) {
if(err) return res.send(500,err);
return res.redirect(redirectUrl);
});
}
// Get access_token from the code
else {
google_calendar.getGoogleAccessToken(req.query, function(err, access_token, refresh_token) {
if(err) return res.send(500,err);
req.session.access_token = access_token;
req.session.refresh_token = refresh_token;
return res.redirect(req.session.authReturn);
});
}
});
