import jwt from 'jsonwebtoken';

export const authenticate = (req, res, next) => {
  const token = req.headers.authorization?.split(' ')[1];
  
  if (!token) {
    return res.status(401).json({ error: 'No token provided' });
  }

  try {
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    req.user = decoded;
    next();
  } catch (err) {
    res.status(401).json({ error: 'Invalid token' });
  }
};

export const authorize = (roles = []) => {
  return (req, res, next) => {
    if (!roles.includes(req.user.role)) {
      return res.status(403).json({ error: 'Access denied' });
    }
    next();
  };
};