fix: Timeline should should show folder media even without camera support (#2216)

- Closes #2205

src/components/timeline-core.ts

@@ -29,6 +29,7 @@ import { contentsChanged } from '../utils/basic';
 import './date-picker.js';
 import { AdvancedCameraCardDatePicker, DatePickerEvent } from './date-picker.js';
 import './icon';
+import { renderMessage } from './message';
 import './thumbnail/thumbnail.js';
 
 /**
@@ -139,7 +140,18 @@ export class AdvancedCameraCardTimelineCore extends LitElement {
   protected _controller: TimelineController = new TimelineController(this);
 
   protected render(): TemplateResult | void {
-    if (!this.hass || !this.timelineConfig || !this.keys?.length) {
+    if (!this.hass || !this.timelineConfig) {
+      return;
+    }
+
+    if (!this.keys.length) {
+      if (!this.mini) {
+        return renderMessage({
+          message: localize('error.no_camera_or_media_for_timeline'),
+          icon: 'mdi:chart-gantt',
+          type: 'info',
+        });
+      }
       return;
     }
 

src/components/timeline.ts

@@ -8,6 +8,7 @@ import { TimelineConfig } from '../config/schema/timeline';
 import { CardWideConfig } from '../config/schema/types';
 import { HomeAssistant } from '../ha/types';
 import basicBlockStyle from '../scss/basic-block.scss';
+import { QueryClassifier } from '../view/query-classifier';
 import './surround.js';
 import './timeline-core.js';
 
@@ -32,6 +33,27 @@ export class AdvancedCameraCardTimeline extends LitElement {
   public cardWideConfig?: CardWideConfig;
 
   protected _getKeys(): TimelineKey[] {
+    const query = this.viewManagerEpoch?.manager.getView()?.query;
+
+    // If there's a query, try to extract camera IDs or folder info from it.
+    if (QueryClassifier.isMediaQuery(query)) {
+      const cameraIDs = query.getQueryCameraIDs();
+      if (cameraIDs && cameraIDs.size) {
+        return [...cameraIDs].map((cameraID) => ({ type: 'camera', cameraID }));
+      }
+    } else if (QueryClassifier.isFolderQuery(query)) {
+      const folderConfig = query.getQuery()?.folder;
+      if (folderConfig) {
+        return [
+          {
+            type: 'folder' as const,
+            folder: folderConfig,
+          },
+        ];
+      }
+    }
+
+    // Otherwise fall back to all cameras that support media queries.
     const keys: TimelineKey[] = [];
     for (const camera of this.cameraManager?.getStore().getCameraIDsWithCapability({
       anyCapabilities: ['clips', 'snapshots', 'recordings'],