/**
* Get Gmail Refresh Token
*
* Run this script to get a refresh token for Gmail OAuth2.
*
* Usage:
* 1. Update the CLIENT_ID and CLIENT_SECRET below with your credentials
* 2. Run: node scripts/get-gmail-refresh-token.js
* 3. Open the URL shown in browser
* 4. Grant permissions
* 5. Copy the refresh token from console
*/
const http = require('http');
const url = require('url');
const { google } = require('googleapis');
// ===== UPDATE THESE VALUES =====
const CLIENT_ID = '992906162498-09ptm95r4la42v08lisa3ka2a2ls4t8r.apps.googleusercontent.com';
const CLIENT_SECRET = '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';
const REDIRECT_URI = 'http://localhost:3000';
// ================================
const oauth2Client = new google.auth.OAuth2(
CLIENT_ID,
CLIENT_SECRET,
REDIRECT_URI
);
const SCOPES = ['https://www.googleapis.com/auth/gmail.send'];
const authUrl = oauth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
prompt: 'consent', // Force consent to get a new refresh token
});
console.log('\n========================================');
console.log('GMAIL OAuth2 REFRESH TOKEN GENERATOR');
console.log('========================================\n');
console.log('1. Open this URL in your browser:\n');
console.log(authUrl);
console.log('\n2. Sign in with your Gmail account');
console.log('3. Grant permission to send emails');
console.log('4. The authorization code will be shown');
console.log('\n5. Copy the code and paste it here\n');
console.log('========================================\n');
const server = http.createServer(async (req, res) => {
const parsedUrl = new url.URL(req.url, `http://${req.headers.host}`);
const code = parsedUrl.searchParams.get('code');
if (code) {
try {
const { tokens } = await oauth2Client.getToken(code);
console.log('\nā
SUCCESS! Here are your tokens:\n');
console.log(`GMAIL_CLIENT_ID=${CLIENT_ID}`);
console.log(`GMAIL_CLIENT_SECRET=${CLIENT_SECRET}`);
console.log(`GMAIL_REFRESH_TOKEN=${tokens.refresh_token}`);
console.log(`GMAIL_USER=scisnap000@gmail.com`);
console.log(`GMAIL_ENABLED=true`);
console.log('\n========================================\n');
console.log('Add these to your backend/.env file!\n');
res.writeHead(200, { 'Content-Type': 'text/html' });
res.end(`
ā
Authentication Successful!
Check your terminal/console for the tokens.
You can close this window now.
`);
} catch (error) {
console.error('ā Error:', error.message);
res.writeHead(500, { 'Content-Type': 'text/html' });
res.end(`Error: ${error.message}
`);
}
server.close();
} else {
res.writeHead(400, { 'Content-Type': 'text/html' });
res.end('No authorization code received
');
}
});
server.listen(3000, () => {
console.log('Server running at http://localhost:3000');
console.log('Waiting for authorization...\n');
});