1.0.0 • Published 4 years ago
google-oauth-login v1.0.0
Google Login OAuth 2.0 flow
Google oAuth flow to retrieve access & refresh token
Feature
This package can be used to get Google access token and refresh token for an user access token.
Implements a server-Side flow for login with Google, similar to one provided by Facebook or Twitter.
This can be used to get User Access Token to make API calls to Google, like getting access to Google My Business
Installation
Clone as a Git repository
git clone https://github.com/knitesh/google-login.git
Install as a node_module
npm i google-oauth-login --save OR npm install google-oauth-login --save
Usage
To initialize Google oAuth function
new GoogleLogin(config)
where config will be
const config = {
clientId,
clientSecret,
scope,
redirectUri,
}
To get oAuth URl for user consent and login
await google.getGoogleOauthUrl()
To extract code received from Google
await google.getOauthCodeAsync(oAuthParam)
To get access token and refresh token(if accessType = offline)
await google.getAccessTokenAsync(oAuthParam)
Sample Express app
const express = require('express')
const GoogleLogin = require('google-oauth-login')
const app = express()
const port = 9000
const google = new GoogleLogin({
clientId:<<your Google oAuth Client Id>,
clientSecret: <<your Google oAuth Client Secret>,
redirectUri: 'http://localhost:9000/google/oauth/callback',
scope: 'https://www.googleapis.com/auth/userinfo.profile',
accessType: 'offline', // to get refresh token pass access type: offline
prompt: 'consent', // to prompt user everytime
})
app.get('/google/oauth', async (req, res) => {
// generate the URL that Googl will use for login and consent dialog
var result = await google.getGoogleOauthUrl()
// redirect the user to consent screen
res.redirect(result)
})
// This is the Authrized redirect URl that needs to be added to oAuth Client Id generation screen
// Google will send the code and related scope as query string to this Url
app.get('/google/oauth/callback', async (req, res) => {
const oAuthParam = {
code: req.query.code,
scope: req.query.scope,
}
// if you just need the code
const code = await google.getOauthCodeAsync(oAuthParam)
// get the access token, token_type so that you can make additional call to google
var result = await google.getAccessTokenAsync(oAuthParam)
// This example just showing result returned in a browers
// You should store this in a secure database and never expose to client app
res.send(JSON.stringify(result))
})
app.get('/', (req, res) => {
const _user = req.session && req.session.user
if (_user) {
res.send(JSON.stringify(_user))
} else {
res.send('Login with Google')
}
})
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`)
})