import { OAuth2Client } from 'google-auth-library';
import http from 'http';
import { parse } from 'url';
import open from 'open';
import dotenv from 'dotenv';
import { fileURLToPath } from 'url';
import path from 'path';
dotenv.config();
const oauth2Client = new OAuth2Client(
process.env.GOOGLE_CLIENT_ID,
process.env.GOOGLE_CLIENT_SECRET,
process.env.REDIRECT_URI
);
// Define the same scopes your app uses
const SCOPES = [
'https://www.googleapis.com/auth/gmail.readonly',
'https://www.googleapis.com/auth/gmail.modify',
'https://www.googleapis.com/auth/calendar',
'https://www.googleapis.com/auth/calendar.events'
];
// Generate and open the authorization URL
const authorizeUrl = oauth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
prompt: 'consent' // Forces a refresh token to be returned
});
console.log('Authorize this app by visiting this URL:', authorizeUrl);
open(authorizeUrl);
// Create a simple server to receive the auth code
http.createServer(async (req, res) => {
const parsedUrl = parse(req.url, true);
if (parsedUrl.pathname === '/code') {
const code = parsedUrl.query.code;
console.log('Authorization code:', code);
try {
const { tokens } = await oauth2Client.getToken(code);
console.log('Refresh token:', tokens.refresh_token);
console.log('Access token:', tokens.access_token);
console.log('\nUpdate your .env file with this new refresh token');
res.writeHead(200, {'Content-Type': 'text/html'});
res.end('<html><body><h1>Authentication successful!</h1><p>You can close this window now.</p><p>Check your terminal for the new refresh token.</p></body></html>');
} catch (error) {
console.error('Error getting tokens:', error);
res.writeHead(500, {'Content-Type': 'text/plain'});
res.end('An error occurred during authentication');
}
process.exit(0);
}
}).listen(4100, () => {
console.log('Listening for authorization code on port 4100');
});
