const jwt = require('jsonwebtoken');

const auth = (req, res, next) => {
  const token = req.header('Authorization')?.replace('Bearer ', '');
  
  if (!token) {
    return res.status(401).json({ error: '未授权访问' });
  }

  try {
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    req.adminId = decoded.id;
    next();
  } catch (error) {
    res.status(401).json({ error: '无效的token' });
  }
};

module.exports = auth;