(Feat): Initial Commit

backend/middleware/auth.js

@@ -0,0 +1,32 @@
+import jwt from 'jsonwebtoken';
+
+export const authenticateToken = (req, res, next) => {
+  const authHeader = req.headers['authorization'];
+  const token = authHeader && authHeader.split(' ')[1];
+
+  if (!token) {
+    return res.status(401).json({ error: 'Access token required' });
+  }
+
+  jwt.verify(token, process.env.JWT_SECRET, (err, user) => {
+    if (err) {
+      return res.status(403).json({ error: 'Invalid or expired token' });
+    }
+    req.user = user;
+    next();
+  });
+};
+
+export const authorize = (...roles) => {
+  return (req, res, next) => {
+    if (!req.user) {
+      return res.status(401).json({ error: 'Unauthorized' });
+    }
+
+    if (!roles.includes(req.user.role)) {
+      return res.status(403).json({ error: 'Insufficient permissions' });
+    }
+
+    next();
+  };
+};