update README and some

README.md

@@ -1,3 +1,11 @@
+# INTRO
+
+Front-page for Sign-in: https://zmiftah.github.io/google-auth-page/
+
+For verify: `node verify.js`
+
+For getting token: `node verify-browser.js`
+
 # React + Vite
 
 This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.

verify-browser.js

@@ -0,0 +1,44 @@
+
+import { OAuth2Client } from 'google-auth-library';
+import readline from 'readline';
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+const CLIENT_ID = process.env.GOOGLE_CLIENT_ID;
+const CLIENT_SECRET = process.env.GOOGLE_CLIENT_SECRET;
+const REDIRECT_URI = 'http://localhost';
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+async function main() {
+  const oAuth2Client = new OAuth2Client(CLIENT_ID, CLIENT_SECRET, REDIRECT_URI);
+
+  const authUrl = oAuth2Client.generateAuthUrl({
+    access_type: 'offline',
+    scope: ['openid', 'email', 'profile'],
+  });
+
+  console.log('🔐 Open this URL in your browser to authenticate:');
+  console.log(authUrl);
+
+  rl.question('\n📥 Paste the code here: ', async (code) => {
+    try {
+      const { tokens } = await oAuth2Client.getToken(code);
+      oAuth2Client.setCredentials(tokens);
+
+      const idToken = tokens.id_token;
+      console.log('\n✓ Your Google ID Token (JWT):\n');
+      console.log(idToken);
+    } catch (err) {
+      console.error('❌ Error retrieving token:', err);
+    } finally {
+      rl.close();
+    }
+  });
+}
+
+main();