oauth2-boilerplate-nodejs

oauth2-boilerplate-nodejs.js

const request = require('request')
const cors = require('cors')
const express = require('express')
const app = express()

app.use(cors())
app.get('/oauth/login', login)
app.get('/oauth/callback', callback)
app.listen(3333)

const Credentials = {
    redirect_url: 'https://YOUR_SERVER' + '/oauth/callback',
    client_id: 'YOUR_CLIENT_ID',
    client_secret: 'YOUR_CLIENT_SECRET'
}

// Here you have to make the OAuthURL based on the service your going to use (like google, github, etc) so you can
// find information about how to do it properly on its own oauth docs.
const OAuthURL = `https://.../authorize?client_id=${Credentials.client_id}&redirect_uri=${Credentials.redirect_url}`

async function login(req, res) {
    res.redirect(OAuthURL)
}

async function callback(req, res) {
    let code = req.query.code || null
    let authOptions = {
        // Here you need to put the url you'll make the request to receive the access_token.
        // Again you can find this url on the service docs.
        url: 'https://.../login/oauth/access_token',
        form: {
            grant_type: 'authorization_code',
            code,
            client_id: Credentials.client_id,
            client_secret: Credentials.client_secret,
            redirect_uri: Credentials.redirect_url,
        },
        headers: {
            'Content-Type': 'multipart/form-data'
        },
        json: true
    }

    request.post(authOptions, function (error, response, body) {
        const access_token = body.access_token
        res.redirect('https://YOUR_CLIENT_URL' + '/oauth?access_token=' + access_token)
    })
}