initial commit

src/middleware/network-access.middleware.ts

@@ -0,0 +1,33 @@
+import { Response, NextFunction } from 'express';
+import Network from '../models/network.model';
+import { UserRequest } from '../types/express';
+
+export const checkNetworkAccess = async (req: UserRequest, res: Response, next: NextFunction): Promise<void> => {
+    try {
+        const networkId = req.params.networkId;
+
+        if (!networkId) {
+            res.status(400).json({ message: 'Network ID is required' });
+            return;
+        }
+
+        const network = await Network.findById(networkId);
+
+        if (!network) {
+            res.status(404).json({ message: 'Network not found' });
+            return;
+        }
+
+        // Check if user is the owner or the network is public
+        if (network.owner.toString() !== req.user?._id.toString() && !network.isPublic) {
+            res.status(403).json({ message: 'You do not have permission to access this network' });
+            return;
+        }
+
+        // Add network to the request
+        req.network = network;
+        next();
+    } catch (error) {
+        res.status(500).json({ message: 'Server error' });
+    }
+};