remove emptySelectionHintKey from switches widget

use the new messages framework and revert the changes made in #22664

web/public/locales/en/views/settings.json

@@ -1433,8 +1433,7 @@
     },
     "reviewLabels": {
       "summary": "{{count}} labels selected",
-      "empty": "No labels available",
-      "allNonAlertDetections": "All non-alert activity will be included as detections."
+      "empty": "No labels available"
     },
     "filters": {
       "objectFieldLabel": "{{field}} for {{label}}"
@@ -1610,7 +1609,8 @@
   "configMessages": {
     "review": {
       "recordDisabled": "Recording is disabled, review items will not be generated.",
-      "detectDisabled": "Object detection is disabled. Review items require detected objects to categorize alerts and detections."
+      "detectDisabled": "Object detection is disabled. Review items require detected objects to categorize alerts and detections.",
+      "allNonAlertDetections": "All non-alert activity will be included as detections."
     },
     "audio": {
       "noAudioRole": "No streams have the audio role defined. You must enable the audio role for audio detection to function."

web/src/components/config-form/section-configs/review.ts

@@ -27,6 +27,21 @@ const review: SectionConfigOverrides = {
         },
       },
     ],
+    fieldMessages: [
+      {
+        key: "detections-all-non-alert",
+        field: "detections.labels",
+        messageKey: "configMessages.review.allNonAlertDetections",
+        severity: "info",
+        position: "after",
+        condition: (ctx) => {
+          const labels = (
+            ctx.formData?.detections as Record<string, unknown> | undefined
+          )?.labels;
+          return !Array.isArray(labels) || labels.length === 0;
+        },
+      },
+    ],
     fieldDocs: {
       "alerts.labels": "/configuration/review/#alerts-and-detections",
       "detections.labels": "/configuration/review/#alerts-and-detections",
@@ -59,8 +74,6 @@ const review: SectionConfigOverrides = {
           "ui:widget": "reviewLabels",
           "ui:options": {
             suppressMultiSchema: true,
-            emptySelectionHintKey:
-              "configForm.reviewLabels.allNonAlertDetections",
           },
         },
         required_zones: {

web/src/components/config-form/sections/BaseSection.tsx

@@ -573,8 +573,16 @@ export function ConfigSection({
     if (activeFieldMessages.length === 0) return sectionConfig.uiSchema;
     const merged = { ...(sectionConfig.uiSchema ?? {}) };
     for (const msg of activeFieldMessages) {
-      const fieldKey = msg.field;
-      const existing = merged[fieldKey] as Record<string, unknown> | undefined;
+      const segments = msg.field.split(".");
+      // Navigate to the nested uiSchema node, shallow-cloning along the way
+      let node = merged;
+      for (let i = 0; i < segments.length - 1; i++) {
+        const seg = segments[i];
+        node[seg] = { ...(node[seg] as Record<string, unknown>) };
+        node = node[seg] as Record<string, unknown>;
+      }
+      const leafKey = segments[segments.length - 1];
+      const existing = node[leafKey] as Record<string, unknown> | undefined;
       const existingMessages = ((existing?.["ui:messages"] as unknown[]) ??
         []) as Array<{
         key: string;
@@ -582,7 +590,7 @@ export function ConfigSection({
         severity: string;
         position?: string;
       }>;
-      merged[fieldKey] = {
+      node[leafKey] = {
         ...existing,
         "ui:messages": [
           ...existingMessages,

web/src/components/config-form/theme/widgets/SwitchesWidget.tsx

@@ -45,8 +45,6 @@ export type SwitchesWidgetOptions = {
   enableSearch?: boolean;
   /** Allow users to add custom entries not in the predefined list */
   allowCustomEntries?: boolean;
-  /** i18n key for a hint shown when no entities are selected */
-  emptySelectionHintKey?: string;
 };
 
 function normalizeValue(value: unknown): string[] {
@@ -131,11 +129,6 @@ export function SwitchesWidget(props: WidgetProps) {
     [props.options],
   );
 
-  const emptySelectionHintKey = useMemo(
-    () => props.options?.emptySelectionHintKey as string | undefined,
-    [props.options],
-  );
-
   const selectedEntities = useMemo(() => normalizeValue(value), [value]);
   const [isOpen, setIsOpen] = useState(selectedEntities.length > 0);
   const [searchTerm, setSearchTerm] = useState("");
@@ -215,12 +208,6 @@ export function SwitchesWidget(props: WidgetProps) {
           </Button>
         </CollapsibleTrigger>
 
-        {emptySelectionHintKey && selectedEntities.length === 0 && t && (
-          <div className="mt-0 pb-2 text-sm text-success">
-            {t(emptySelectionHintKey, { ns: namespace })}
-          </div>
-        )}
-
         <CollapsibleContent className="rounded-lg border border-input bg-secondary pb-1 pr-0 pt-2 md:max-w-md">
           {allEntities.length === 0 && !allowCustomEntries ? (
             <div className="text-sm text-muted-foreground">{emptyMessage}</div>