adding ports fixed

backend/src/routes/components.js

@@ -172,12 +172,26 @@ router.get('/:id/ports', (req, res) => {
 
 // POST /api/components/:id/ports
 router.post('/:id/ports', (req, res) => {
-  const component = db.prepare('SELECT id FROM components WHERE id = ?').get(req.params.id);
+  const component = db.prepare('SELECT id, type, port_count FROM components WHERE id = ?').get(req.params.id);
   if (!component) return res.status(404).json({ error: 'Component not found' });
 
   const { port_number, label, port_type, connected_to_port_id, notes } = req.body;
   if (port_number == null) return res.status(400).json({ error: 'port_number is required' });
 
+  // Patch-panel specific: no duplicate port numbers, enforce port_count capacity
+  if (component.type === 'patch_panel') {
+    const existing = db.prepare('SELECT id FROM ports WHERE component_id = ? AND port_number = ?').get(req.params.id, port_number);
+    if (existing) return res.status(409).json({ error: `Port ${port_number} already exists on this patch panel.` });
+
+    if (component.port_count != null) {
+      const count = db.prepare('SELECT COUNT(*) as n FROM ports WHERE component_id = ?').get(req.params.id).n;
+      if (count >= component.port_count)
+        return res.status(409).json({ error: `Patch panel is full (${component.port_count} ports maximum).` });
+      if (port_number < 1 || port_number > component.port_count)
+        return res.status(400).json({ error: `Port number must be between 1 and ${component.port_count}.` });
+    }
+  }
+
   const id = uuidv4();
   db.prepare(`
     INSERT INTO ports (id, component_id, port_number, label, port_type, connected_to_port_id, notes)