fix(rack-planner): compute port data synchronously in PortConfigModal to prevent empty first render

client/src/components/modals/PortConfigModal.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, type FormEvent } from 'react';
+import { useState, useEffect, useMemo, type FormEvent } from 'react';
 import { toast } from 'sonner';
 import type { Port, Vlan, VlanMode } from '../../types';
 import { Modal } from '../ui/Modal';
@@ -14,42 +14,45 @@ interface PortConfigModalProps {
 }
 
 export function PortConfigModal({ portId, open, onClose }: PortConfigModalProps) {
-  const { racks, fetchRacks } = useRackStore();
-  const [port, setPort] = useState<Port | null>(null);
+  const { racks, fetchRacks, deleteConnection } = useRackStore();
   const [vlans, setVlans] = useState<Vlan[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [fetching, setFetching] = useState(false);
+
+  // Synchronously find the port from the global store
+  const port = useMemo(() => {
+    for (const rack of racks) {
+      for (const mod of rack.modules) {
+        const found = mod.ports.find((p) => p.id === portId);
+        if (found) return found;
+      }
+    }
+    return null;
+  }, [racks, portId]);
+
+  // Form state
   const [label, setLabel] = useState('');
   const [mode, setMode] = useState<VlanMode>('ACCESS');
   const [nativeVlanId, setNativeVlanId] = useState<string>('');
   const [taggedVlanIds, setTaggedVlanIds] = useState<string[]>([]);
   const [notes, setNotes] = useState('');
-  const [loading, setLoading] = useState(false);
-  const [fetching, setFetching] = useState(false);
+
   // Quick-create VLAN
   const [newVlanId, setNewVlanId] = useState('');
   const [newVlanName, setNewVlanName] = useState('');
   const [newVlanColor, setNewVlanColor] = useState('#3b82f6');
   const [creatingVlan, setCreatingVlan] = useState(false);
 
-  // Find the port from store
+  // Reset form state when port is found or changed
   useEffect(() => {
-    if (!open) return;
-    let found: Port | undefined;
-    for (const rack of racks) {
-      for (const mod of rack.modules) {
-        found = mod.ports.find((p) => p.id === portId);
-        if (found) break;
-      }
-      if (found) break;
+    if (port && open) {
+      setLabel(port.label ?? '');
+      setMode(port.mode);
+      setNativeVlanId(port.nativeVlan?.toString() ?? '');
+      setTaggedVlanIds(port.vlans.filter((v) => v.tagged).map((v) => v.vlanId));
+      setNotes(port.notes ?? '');
     }
-    if (found) {
-      setPort(found);
-      setLabel(found.label ?? '');
-      setMode(found.mode);
-      setNativeVlanId(found.nativeVlan?.toString() ?? '');
-      setTaggedVlanIds(found.vlans.filter((v) => v.tagged).map((v) => v.vlanId));
-      setNotes(found.notes ?? '');
-    }
-  }, [open, portId, racks]);
+  }, [port, open]);
 
   // Load VLAN list
   useEffect(() => {
@@ -125,7 +128,6 @@ export function PortConfigModal({ portId, open, onClose }: PortConfigModalProps)
 
   if (!port) return null;
 
-  const { deleteConnection } = useRackStore();
   const connections = [...(port.sourceConnections || []), ...(port.targetConnections || [])];
 
   async function handleDisconnect(connId: string) {