feat: Add detailed user statistics view for admin with QR code list and scan counts

api/routes/admin.js

@@ -24,6 +24,35 @@ router.get('/users', async (req, res) => {
     }
 });
 
+// Get user details (QR codes, scans)
+router.get('/users/:id/details', async (req, res) => {
+    const { id } = req.params;
+    try {
+        // Fetch user info
+        const userRes = await pgPool.query('SELECT id, email, role, created_at FROM users WHERE id = $1', [id]);
+        if (userRes.rows.length === 0) {
+            return res.status(404).json({ error: 'User not found' });
+        }
+        
+        // Fetch QR codes and scan counts
+        const qrRes = await pgPool.query(`
+            SELECT q.id, q.type, q.data_type, q.destination_url, q.short_url_id, q.created_at, q.design_data->>'name' as name,
+                   (SELECT COUNT(*) FROM qr_scans s WHERE s.qr_code_id = q.id) as scan_count
+            FROM qr_codes q
+            WHERE q.user_id = $1
+            ORDER BY q.created_at DESC
+        `, [id]);
+
+        res.json({
+            user: userRes.rows[0],
+            qrCodes: qrRes.rows
+        });
+    } catch (err) {
+        console.error(err);
+        res.status(500).json({ error: 'Server Error fetching user details' });
+    }
+});
+
 // Update a user's tier
 router.put('/users/:id/tier', async (req, res) => {
     const { id } = req.params;