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

module.exports = function (req, res, next) {
  const authHeader = req.headers["authorization"];
  const token = authHeader && authHeader.split(" ")[1]; // Expect "Bearer <token>"

  if (!token) return res.status(403).json({ message: "Access denied, token missing" });

  jwt.verify(token, process.env.JWT_SECRET, (err, decoded) => {
    if (err) return res.status(401).json({ message: "Invalid or expired token" });
    req.user = decoded;
    next();
  });
};