const jwt = require('jsonwebtoken');
require('dotenv').config();

const JWT_SECRET = process.env.JWT_SECRET;

// Middleware to verify JWT token
const authMiddleware = (req, res, next) => {
  const auth = req.headers.authorization;
  if (!auth || !auth.startsWith('Bearer ')) {
    return res.status(401).json({ error: 'missing_token' });
  }

  const token = auth.slice(7);
  try {
    const payload = jwt.verify(token, JWT_SECRET);
    req.user = payload;
    next();
  } catch (err) {
    return res.status(401).json({ error: 'invalid_token' });
  }
};

module.exports = { authMiddleware };