Created
April 8, 2020 03:49
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// https://joshwright.com/tips/google-authentication-for-nodejs/ | |
import { google } from 'googleapis'; | |
const buildAuth = function () { | |
return new google.auth.OAuth2( | |
'0000000000000-xxxxxxxx.apps.googleusercontent.com', // clientId | |
'XXXXXXXXXXXXXXXXXXX', // clientSecret | |
'http://localhost:7777/google/callback', // redirect | |
); | |
}; | |
app.get('/google/login', async (req, res) => { | |
const auth = buildAuth(); | |
const url = auth.generateAuthUrl({ | |
access_type: 'offline', | |
prompt: 'consent', | |
scope: [ | |
'https://www.googleapis.com/auth/userinfo.email', | |
'profile', | |
] | |
}); | |
res.redirect(url); | |
}); | |
app.get('/google/callback', async (req, res) => { | |
// get & set tokens | |
const { code } = req.query; | |
const auth = buildAuth(); | |
const { tokens } = await auth.getToken(code); | |
auth.setCredentials(tokens); | |
// fetch the user's email | |
const peopleApi = google.people({version: 'v1', auth}).people; | |
const me = await peopleApi.get({ | |
resourceName: 'people/me', | |
personFields: 'emailAddresses', | |
}); | |
const address = me.data.emailAddresses.find(e => e.metadata.primary); | |
const email = address && address.value; | |
// TODO: login with email | |
res.redirect('/'); | |
}); |
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