diff --git a/README.md b/README.md
index ba8c2f3..0fd8a73 100644
--- a/README.md
+++ b/README.md
@@ -23,3 +23,4 @@ Gestion de friendship dans POSTGRESQL:
 
 Ressource:
     https://www.postgresql.org/docs/
+    https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/authorizing-oauth-apps
\ No newline at end of file
diff --git a/srcs/backend/routes/auth.js b/srcs/backend/routes/auth.js
index 4b1b960..2e42b28 100644
--- a/srcs/backend/routes/auth.js
+++ b/srcs/backend/routes/auth.js
@@ -1,6 +1,7 @@
 const express = require('express');
 const router = express.Router();
 const authService = require('../services/auth');
+const fetch = require('node-fetch');
 
 router.post('/register', async(req, res) =>
 {
@@ -20,4 +21,13 @@ router.post('/login', async(req, res) =>
 	res.status(result.status).json(result.data);
 });
 
+router.get('/github', (req, res) => {
+  const githubAuthUrl = `https://github.com/login/oauth/authorize?` +
+    `client_id=${process.env.GITHUB_CLIENT_ID}&` +
+    `redirect_uri=${encodeURIComponent(process.env.GITHUB_REDIRECT_URI)}&` +
+    `scope=user:email`;
+
+  res.redirect(githubAuthUrl);
+});
+
 module.exports = router;
\ No newline at end of file
diff --git a/srcs/backend/services/github.js b/srcs/backend/services/github.js
new file mode 100644
index 0000000..e69de29
diff --git a/srcs/frontend/src/login.js b/srcs/frontend/src/login.js
index 19bcb91..0d61945 100644
--- a/srcs/frontend/src/login.js
+++ b/srcs/frontend/src/login.js
@@ -4,7 +4,7 @@ export class LoginWindow extends fenetre {
     constructor() {
         super(320, 240, "Connexion");
 
-        this.mode = "login"; // login | register
+        this.mode = "login";
 
         this.username = document.createElement("input");
         this.username.placeholder = "Username";
@@ -33,6 +33,19 @@ export class LoginWindow extends fenetre {
         this.applyStyles();
         this.bindEvents();
 
+        //  **** AJOUT FONCTION GITHUB ****
+        // Dans constructor() de LoginWindow
+        this.githubBtn = document.createElement("button");
+        this.githubBtn.innerText = "Se connecter avec GitHub";
+        this.githubBtn.style.backgroundColor = "#24292e";
+        this.githubBtn.style.color = "white";
+        this.githubBtn.onclick = () => {
+            window.location.href = "/api/auth/github";
+        };
+        this.body.appendChild(this.githubBtn);
+
+
+
         this.checkIfAlreadyLoggedIn(); //verifie si l'utilisateur est connecté au démarrage
     }