Created
August 26, 2020 11:27
-
-
Save khalby786/35b6483f99fc660b69a33a3bc86dd1cc to your computer and use it in GitHub Desktop.
GitHub oAuth Login with Express & without Passport.js
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const express = require("express"); | |
const app = express(); | |
var session = require('express-session'); | |
const fetch = require('node-fetch'); | |
const clientID = process.env.CLIENT_ID; | |
const clientSecret = process.env.CLIENT_SECRET; | |
async function getAccessToken(code, client_id, client_secret) { | |
const request = await fetch("https://github.com/login/oauth/access_token", { | |
method: "POST", | |
headers: { | |
"Content-Type": "application/json" | |
}, | |
body: JSON.stringify({ | |
client_id, | |
client_secret, | |
code | |
}) | |
}); | |
const text = await request.text(); | |
console.log("RESPONSE!!!"); | |
console.log(text); | |
const params = new URLSearchParams(text); | |
return params.get("access_token"); | |
}; | |
async function fetchGitHubUser(token) { | |
const request = await fetch("https://api.github.com/user", { | |
headers: { | |
Authorization: "token " + token | |
} | |
}); | |
return await request.json(); | |
} | |
app.use( | |
session({ | |
secret: process.env.SESSION_SECRET, | |
resave: true, | |
saveUninitialized: true | |
}) | |
); | |
app.use(express.static("public")); | |
app.set('view engine', 'ejs'); | |
app.get("/", (request, response) => { | |
if (request.session.loggedin === true) { | |
// Logged in | |
} else { | |
// Not logged in | |
} | |
}); | |
app.get("/login/github", (req, res) => { | |
res.redirect( | |
`https://github.com/login/oauth/authorize?client_id=${process.env.CLIENT_ID}&scope=user%20public_repo` | |
); | |
}); | |
app.get("/login/github/callback", async (req, res) => { | |
const code = req.query.code; | |
const access_token = await getAccessToken(code, clientID, clientSecret); | |
console.log(access_token); | |
req.session.token = access_token; | |
const user = await fetchGitHubUser(access_token); | |
if (user) { | |
req.session.access_token = access_token; | |
req.session.github = user; | |
req.session.githubId = user.id; | |
req.session.loggedin = true; | |
req.session.username = user.login; | |
res.redirect("/home"); // or to wherever you want to redirect to after logging in | |
} else { | |
res.send("Login did not succeed!"); | |
} | |
}); | |
// Go here to logout | |
app.get("/logout", (req, res) => { | |
req.session.destroy(function() { | |
res.redirect('/'); | |
}) | |
}) | |
// listen for requests :) | |
const listener = app.listen(process.env.PORT, () => { | |
console.log("Your app is listening on port " + listener.address().port); | |
}); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment