Auth implemented

backend/src/middleware/authMiddleware.ts

@@ -0,0 +1,21 @@
+// backend/src/middleware/authMiddleware.ts
+import { Request, Response, NextFunction } from 'express';
+import { SessionService } from '../services/SessionService';
+
+export const authMiddleware = (req: Request, res: Response, next: NextFunction) => {
+  const sessionToken = req.headers['x-session-token'] as string; // Assuming token is sent in a header
+
+  if (!sessionToken) {
+    return res.status(401).json({ message: 'No session token provided.' });
+  }
+
+  const session = SessionService.getSession(sessionToken);
+
+  if (!session || !session.isAuthenticated) {
+    return res.status(401).json({ message: 'Invalid or unauthenticated session.' });
+  }
+
+  // Optionally, attach session to request for further use
+  (req as any).session = session;
+  next();
+};