Initial code for major engine refactor.

package.json

@@ -37,7 +37,7 @@
     "side-drawer": "^3.1.0",
     "ts-toolbelt": "^9.6.0",
     "uuid": "^8.3.2",
-    "vis-data": "^7.1.3",
+    "vis-data": "^7.1.4",
     "vis-timeline": "^7.7.0",
     "vis-util": "^5.0.2",
     "xss": "^1.0.14",

src/card-condition.ts

@@ -180,7 +180,8 @@ export class CardConditionManager {
    * Trigger the callback.
    * @param _ Ignored parameter.
    */
-  protected _triggerChange(_): void {
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  protected _triggerChange(_: MediaQueryListEvent): void {
     this._callback();
   }
 

src/card.ts

@@ -53,8 +53,6 @@ import {
   FrigateCardView,
   FRIGATE_CARD_VIEWS_USER_SPECIFIED,
   MediaLoadedInfo,
-  MEDIA_TYPE_IMAGE,
-  MEDIA_TYPE_VIDEO,
   MESSAGE_TYPE_PRIORITIES,
   MenuButton,
   Message,
@@ -80,7 +78,6 @@ import {
   isTriggeredState,
   sideLoadHomeAssistantElements,
 } from './utils/ha';
-import { getEventID } from './utils/ha/browse-media.js';
 import { DeviceList, getAllDevices } from './utils/ha/device-registry.js';
 import {
   ExtendedEntityCache,
@@ -94,8 +91,10 @@ import { isValidMediaLoadedInfo } from './utils/media-info.js';
 import { View } from './view.js';
 import pkg from '../package.json';
 import { ViewContext } from 'view';
-import { DataManager } from './utils/data-manager.js';
+import { DataManager } from './utils/data/data-manager.js';
 import { setLowPerformanceProfile, setPerformanceCSSStyles } from './performance.js';
+import { DataManagerEngineFactory } from './utils/data/data-manager-engine-factory.js';
+import { RequestCache } from './utils/data/data-manager-cache.js';
 
 /** A note on media callbacks:
  *
@@ -144,6 +143,8 @@ console.info(
   documentationURL: REPO_URL,
 });
 
+type InitializedType = 'initialized' | 'initializing';
+
 /**
  * Main FrigateCard class.
  */
@@ -204,7 +205,6 @@ export class FrigateCard extends LitElement {
   // A cache of resolved media URLs/mimetypes for use in the whole card.
   protected _resolvedMediaCache = new ResolvedMediaCache();
 
-  // Shared timeline data manager (for main timeline view and mini-timelines).
   protected _dataManager?: DataManager;
 
   // The mouse handler may be called continually, throttle it to at most once
@@ -212,8 +212,7 @@ export class FrigateCard extends LitElement {
   protected _boundMouseHandler = throttle(this._mouseHandler.bind(this), 1 * 1000);
 
   // Whether the card has been successfully initialized.
-  protected _loadedHAElements = false;
-  protected _loadedLanguages = false;
+  protected _initialized?: InitializedType;
 
   protected _triggers: Map<string, Date> = new Map();
   protected _untriggerTimerID: number | null = null;
@@ -530,7 +529,8 @@ export class FrigateCard extends LitElement {
 
     if (
       !this._isBeingCasted() &&
-      (this._view?.isViewerView() || (this._view?.is('timeline') && !!this._view?.media))
+      (this._view?.isViewerView() ||
+        (this._view?.is('timeline') && !!this._view?.queryResults?.hasSelectedResult()))
     ) {
       buttons.push({
         icon: 'mdi:download',
@@ -1016,6 +1016,7 @@ export class FrigateCard extends LitElement {
   }
 
   protected _changeView(args?: { view?: View; resetMessage?: boolean }): void {
+    console.debug(`Frigate Card view change: `, args?.view ?? '[default]');
     const changeView = (view: View): void => {
       if (View.isMediaChange(this._view, view)) {
         this._currentMediaLoadedInfo = null;
@@ -1099,18 +1100,12 @@ export class FrigateCard extends LitElement {
    * Called before each update.
    */
   protected willUpdate(changedProps: PropertyValues): void {
-    // Side load the necessary elements if not already initialized (do not need
-    // to block for the loading to complete).
-    if (!this._loadedHAElements) {
-      sideLoadHomeAssistantElements().then((success) => {
-        if (success) {
-          this._loadedHAElements = true;
-        }
-      });
-    }
-
     if (this._cameras && (changedProps.has('_config') || changedProps.has('_cameras'))) {
-      this._dataManager = new DataManager(this._cameras);
+      this._dataManager = new DataManager(
+        new DataManagerEngineFactory(),
+        this._cameras,
+        new RequestCache(),
+      );
     }
 
     if (changedProps.has('_cardWideConfig')) {
@@ -1237,6 +1232,12 @@ export class FrigateCard extends LitElement {
     }
   }
 
+  /**
+   * Initialize the card.
+   */
+  protected async _initialize(): Promise<void> {
+    await Promise.all([sideLoadHomeAssistantElements(), loadLanguages()]);
+  }
   /**
    * Determine whether the element should be updated.
    * @param changedProps The changed properties if any.
@@ -1244,11 +1245,13 @@ export class FrigateCard extends LitElement {
    */
   protected shouldUpdate(changedProps: PropertyValues): boolean {
     // Load the relevant languages. Cannot do anything until then.
-    if (!this._loadedLanguages) {
-      loadLanguages().then(() => {
-        this._loadedLanguages = true;
+    if (this._initialized !== 'initialized') {
+      if (this._initialized !== 'initializing') {
+        this._initialize().then(() => {
+          this._initialized = 'initialized';
           this.requestUpdate();
         });
+      }
       return false;
     }
 
@@ -1318,12 +1321,9 @@ export class FrigateCard extends LitElement {
       // Should not occur.
       return;
     }
+    const media = this._view.queryResults?.getSelectedResult();
 
-    if (
-      !this._view.media ||
-      (this._view.media.media_content_type !== MEDIA_TYPE_VIDEO &&
-        this._view.media.media_content_type !== MEDIA_TYPE_IMAGE)
-    ) {
+    if (!media) {
       this._setMessageAndUpdate({
         message: localize('error.download_no_media'),
         type: 'error',
@@ -1336,35 +1336,8 @@ export class FrigateCard extends LitElement {
       return;
     }
 
-    let path: string;
-    if (this._view.media.frigate?.event) {
-      const event_id = getEventID(this._view.media);
-      if (!event_id) {
-        this._setMessageAndUpdate({
-          message: localize('error.download_no_event_id'),
-          type: 'error',
-        });
-        return;
-      }
-
-      path =
-        `/api/frigate/${cameraConfig.frigate.client_id}` +
-        `/notifications/${event_id}/` +
-        `${
-          this._view.media.media_content_type === MEDIA_TYPE_VIDEO
-            ? 'clip.mp4'
-            : 'snapshot.jpg'
-        }` +
-        `?download=true`;
-    } else if (this._view.media.frigate?.recording) {
-      const recording = this._view.media.frigate.recording;
-      path =
-        `/api/frigate/${cameraConfig.frigate.client_id}` +
-        `/recording/${cameraConfig.frigate.camera_name}` +
-        `/start/${recording.start_time}` +
-        `/end/${recording.end_time}` +
-        `?download=true`;
-    } else {
+    const path = this._dataManager?.getMediaDownloadPath(media);
+    if (!path) {
       return;
     }
 
@@ -1412,30 +1385,35 @@ export class FrigateCard extends LitElement {
    * @returns
    */
   protected _mediaPlayerAction(mediaPlayer: string, action: 'play' | 'stop'): void {
-    if (!['play', 'stop'].includes(action)) {
+    if (!['play', 'stop'].includes(action) || !this._view) {
       return;
     }
 
-    let media_content_id: string;
-    let media_content_type: string;
-    const extra = {};
-    const cameraConfig = this._getSelectedCameraConfig();
-    const cameraEntity = cameraConfig?.camera_entity ?? null;
+    let media_content_id: string | null = null;
+    let media_content_type: string | null = null;
+    let title: string | null = null;
+    let thumbnail: string | null = null;
 
-    if (this._view?.isViewerView() && this._view.media) {
-      media_content_id = this._view.media.media_content_id;
-      media_content_type = this._view.media.media_content_type;
-      extra['thumb'] = this._view.media.thumbnail;
-      extra['title'] = this._view.media.title;
-    } else if (this._view?.is('live') && cameraEntity) {
-      if (this._hass?.states && cameraEntity in this._hass.states) {
-        extra['thumb'] =
-          this._hass.states[cameraEntity].attributes.entity_picture ?? null;
+    const cameraConfig = this._getSelectedCameraConfig();
+    if (!cameraConfig) {
+      return;
     }
-      extra['title'] = getCameraTitle(this._hass, cameraConfig);
+    const cameraEntity = cameraConfig.camera_entity ?? null;
+    const media = this._view.queryResults?.getSelectedResult();
+
+    if (this._view.isViewerView() && media && this._cameras) {
+      media_content_id = media.getContentID(cameraConfig);
+      media_content_type = media.getContentType();
+      title = media.getTitle(cameraConfig);
+      thumbnail = media.getThumbnail(cameraConfig);
+    } else if (this._view?.is('live') && cameraEntity) {
       media_content_id = `media-source://camera/${cameraEntity}`;
       media_content_type = 'application/vnd.apple.mpegurl';
-    } else {
+      title = getCameraTitle(this._hass, cameraConfig);
+      thumbnail = this._hass?.states[cameraEntity]?.attributes?.entity_picture ?? null;
+    }
+
+    if (!media_content_id || !media_content_type) {
       return;
     }
 
@@ -1444,7 +1422,10 @@ export class FrigateCard extends LitElement {
         entity_id: mediaPlayer,
         media_content_id: media_content_id,
         media_content_type: media_content_type,
-        extra: extra,
+        extra: {
+          ...(title && { title: title }),
+          ...(thumbnail && { thumb: thumbnail }),
+        },
       });
     } else if (action === 'stop') {
       this._hass?.callService('media_player', 'media_stop', {

src/components/carousel.ts

@@ -41,15 +41,12 @@ export class FrigateCardCarousel extends LitElement {
   @property({ attribute: false })
   public carouselPlugins?: EmblaCarouselPlugins;
 
+  @property({ attribute: false })
+  public selected = 0;
+
   @property({ attribute: true })
   public transitionEffect?: TransitionEffect;
 
-  // An override to the startIndex, used to preserve the current carousel
-  // position after the carousel is destroyed (so it can be restored if
-  // recreated).
-  // See: https://github.com/dermotduffy/frigate-hass-card/issues/775
-  protected _savedStartIndex: number | null = null;
-
   protected _refSlot: Ref<HTMLSlotElement> = createRef();
 
   protected _carousel?: EmblaCarouselType;
@@ -81,7 +78,7 @@ export class FrigateCardCarousel extends LitElement {
     // Destroy the carousel when the component is disconnected, which forces the
     // plugins (which may have registered event handlers) to also be destroyed.
     // The carousel will automatically reconstruct if the component is re-rendered.
-    this._destroyCarousel({ savePosition: true });
+    this._destroyCarousel();
     super.disconnectedCallback();
   }
 
@@ -96,7 +93,7 @@ export class FrigateCardCarousel extends LitElement {
       'carouselPlugins',
     ] as const;
     if (destroyProperties.some((prop) => changedProps.has(prop))) {
-      this._destroyCarousel({ savePosition: true });
+      this._destroyCarousel();
     }
   }
 
@@ -105,31 +102,21 @@ export class FrigateCardCarousel extends LitElement {
    * @param index Slide number.
    */
   public carouselScrollTo(index: number): void {
-    const scroll = () =>
-      this._carousel?.scrollTo(index, this.transitionEffect === 'none');
-    // This ensures scrolling can work on initial render when the carousel may
-    // not yet exist.
-    if (this._carousel) {
-      scroll();
-    } else {
-      this.updateComplete.then(() => {
-        scroll();
-      });
-    }
+    this.selected = index;
   }
 
   /**
    * Scroll to the previous slide.
    */
   public carouselScrollPrevious(): void {
-    this._carousel?.scrollPrev(this.transitionEffect === 'none');
+    this.selected = Math.max(0, this.selected - 1);
   }
 
   /**
    * Scroll to the next slide.
    */
   public carouselScrollNext(): void {
-    this._carousel?.scrollNext(this.transitionEffect === 'none');
+    this.selected = this.selected + 1;
   }
 
   /**
@@ -174,11 +161,10 @@ export class FrigateCardCarousel extends LitElement {
       window.requestAnimationFrame(() => {
         this._carousel?.reInit({ ...options });
       });
-    }
-    const selected = this.getCarouselSelected();
+    };
 
     carouselReInit({
-      ...(selected && { startIndex: selected.index }),
+      startIndex: this.selected,
     });
   }
 
@@ -211,6 +197,10 @@ export class FrigateCardCarousel extends LitElement {
     if (!this._carousel) {
       this._initCarousel();
     }
+
+    if (changedProperties.has('selected')) {
+      this._carousel?.scrollTo(this.selected, this.transitionEffect === 'none');
+    }
   }
 
   /**
@@ -218,9 +208,7 @@ export class FrigateCardCarousel extends LitElement {
    * @param options If `savePosition` is set the existing carousel position
    * will be saved so it can be restored if the carousel is recreated.
    */
-  protected _destroyCarousel(options?: { savePosition: boolean }): void {
-    this._savedStartIndex =
-      (options?.savePosition ? this._carousel?.selectedScrollSnap() : null) ?? null;
+  protected _destroyCarousel(): void {
     if (this._carousel) {
       this._carousel.destroy();
     }
@@ -248,8 +236,8 @@ export class FrigateCardCarousel extends LitElement {
         {
           axis: this.direction == 'horizontal' ? 'x' : 'y',
           speed: 20,
+          startIndex: this.selected,
           ...this.carouselOptions,
-          ...(this._savedStartIndex !== null && { startIndex: this._savedStartIndex }),
         },
         this.carouselPlugins,
       );
@@ -262,7 +250,7 @@ export class FrigateCardCarousel extends LitElement {
         // Make sure every select causes a refresh to allow for re-paint of the
         // next/previous controls.
         this.requestUpdate();
-      }
+      };
 
       this._carousel.on('init', selectSlide);
       this._carousel.on('select', selectSlide);
@@ -294,18 +282,14 @@ export class FrigateCardCarousel extends LitElement {
   protected _slotChanged(): void {
     // Cannot just re-init, because the slide elements themselves may have
     // changed, and only a carousel init can pass in new (slotted) children. If
-    // the slides themselves change, any position the user has set is assumed to
-    // be abandoned and so the startIndex is reset to whatever the carousel was
-    // originally configured with.
-    this._destroyCarousel({ savePosition: false });
+    this._destroyCarousel();
     this.requestUpdate();
   }
 
   protected render(): TemplateResult | void {
     const slides = this._refSlot.value?.assignedElements({ flatten: true }) || [];
-    const currentSlide = (this._carousel?.selectedScrollSnap() ?? this.carouselOptions?.startIndex) ?? 0;
-    const showPrevious = this.carouselOptions?.loop || currentSlide > 0;
-    const showNext = this.carouselOptions?.loop || currentSlide + 1 < slides.length;
+    const showPrevious = this.carouselOptions?.loop || this.selected > 0;
+    const showNext = this.carouselOptions?.loop || this.selected + 1 < slides.length;
 
     return html` <div class="embla">
       ${showPrevious ? html`<slot name="previous"></slot>` : ``}

src/components/drawer.ts

@@ -126,7 +126,7 @@ export class FrigateCardDrawer extends LitElement {
               </div>
             `
           : ''}
-        <slot ${ref(this._refSlot)} @slotchange=${this._slotChanged.bind(this)}></slot>
+        <slot ${ref(this._refSlot)} @slotchange=${() => this._slotChanged()}></slot>
       </side-drawer>
     `;
   }

src/components/gallery.ts

@@ -19,12 +19,10 @@ import {
 } from '../types.js';
 import { stopEventFromActivatingCardWideActions } from '../utils/action.js';
 import {
-  fetchChildMediaAndDispatchViewChange,
-  fetchLatestMediaAndDispatchViewChange,
   getFullDependentBrowseMediaQueryParametersOrDispatchError,
 } from '../utils/ha/browse-media';
-import { changeViewToRecentRecordingForCameraAndDependents } from '../utils/media-to-view.js';
-import { DataManager } from '../utils/data-manager.js';
+import { changeViewToRecentEventsForCameraAndDependents, changeViewToRecentRecordingForCameraAndDependents } from '../utils/media-to-view.js';
+import { DataManager } from '../utils/data/data-manager.js';
 import { View } from '../view.js';
 import { renderProgressIndicator } from './message.js';
 import './thumbnail.js';
@@ -66,63 +64,54 @@ export class FrigateCardGallery extends LitElement {
    * @returns A rendered template.
    */
   protected render(): TemplateResult | void {
-    const mediaType = this.view?.getMediaType();
-    if (
-      !this.hass ||
-      !this.view ||
-      !this.cameras ||
-      !this.view.isGalleryView() ||
-      !mediaType ||
-      !this.dataManager
-    ) {
-      return;
-    }
+    // const mediaType = this.view?.getMediaType();
+    // if (
+    //   !this.hass ||
+    //   !this.view ||
+    //   !this.cameras ||
+    //   !this.view.isGalleryView() ||
+    //   !mediaType ||
+    //   !this.dataManager
+    // ) {
+    //   return;
+    // }
 
-    if (!this.view.target) {
-      if (mediaType === 'recordings') {
-        changeViewToRecentRecordingForCameraAndDependents(
-          this,
-          this.hass,
-          this.dataManager,
-          this.cameras,
-          this.view,
-          {
-            targetView: 'recordings',
-          },
-        );
-      } else {
-        const browseMediaQueryParameters =
-          getFullDependentBrowseMediaQueryParametersOrDispatchError(
-            this,
-            this.hass,
-            this.cameras,
-            this.view.camera,
-            mediaType,
-          );
+    // if (!this.view.query) {
+    //   if (mediaType === 'recordings') {
+    //     changeViewToRecentRecordingForCameraAndDependents(
+    //       this,
+    //       this.hass,
+    //       this.dataManager,
+    //       this.cameras,
+    //       this.view,
+    //       {
+    //         targetView: 'recordings',
+    //       },
+    //     );
+    //   } else {
+    //     changeViewToRecentEventsForCameraAndDependents(
+    //       this,
+    //       this.hass,
+    //       this.dataManager,
+    //       this.cameras,
+    //       this.view,
+    //       {
+    //         targetView: mediaType,
+    //       },
+    //     );
+    //   }
+    //   return renderProgressIndicator({ cardWideConfig: this.cardWideConfig });
+    // }
 
-        if (!browseMediaQueryParameters) {
-          return;
-        }
-
-        fetchLatestMediaAndDispatchViewChange(
-          this,
-          this.hass,
-          this.view,
-          browseMediaQueryParameters,
-        );
-      }
-      return renderProgressIndicator({ cardWideConfig: this.cardWideConfig });
-    }
-
-    return html`
-      <frigate-card-gallery-core
-        .hass=${this.hass}
-        .view=${this.view}
-        .galleryConfig=${this.galleryConfig}
-        .cameras=${this.cameras}
-      >
-      </frigate-card-gallery-core>
-    `;
+    // return html`
+    //   <frigate-card-gallery-core
+    //     .hass=${this.hass}
+    //     .view=${this.view}
+    //     .galleryConfig=${this.galleryConfig}
+    //     .cameras=${this.cameras}
+    //   >
+    //   </frigate-card-gallery-core>
+    // `;
   }
 
   /**
@@ -139,203 +128,206 @@ export class FrigateCardGallery extends LitElement {
   }
 }
 
-@customElement('frigate-card-gallery-core')
-export class FrigateCardGalleryCore extends LitElement {
-  @property({ attribute: false })
-  public hass?: ExtendedHomeAssistant;
+// @customElement('frigate-card-gallery-core')
+// export class FrigateCardGalleryCore extends LitElement {
+//   @property({ attribute: false })
+//   public hass?: ExtendedHomeAssistant;
 
-  @property({ attribute: false })
-  public view?: Readonly<View>;
+//   @property({ attribute: false })
+//   public view?: Readonly<View>;
 
-  @property({ attribute: false })
-  public galleryConfig?: GalleryConfig;
+//   @property({ attribute: false })
+//   public galleryConfig?: GalleryConfig;
 
-  @property({ attribute: false })
-  public cameras?: Map<string, CameraConfig>;
+//   @property({ attribute: false })
+//   public cameras?: Map<string, CameraConfig>;
 
-  protected _resizeObserver: ResizeObserver;
+//   protected _resizeObserver: ResizeObserver;
 
-  constructor() {
-    super();
-    this._resizeObserver = new ResizeObserver(this._resizeHandler.bind(this));
-  }
+//   constructor() {
+//     super();
+//     this._resizeObserver = new ResizeObserver(this._resizeHandler.bind(this));
+//   }
 
-  /**
-   * Component connected callback.
-   */
-  connectedCallback(): void {
-    super.connectedCallback();
-    this._resizeObserver.observe(this);
-  }
+//   /**
+//    * Component connected callback.
+//    */
+//   connectedCallback(): void {
+//     super.connectedCallback();
+//     this._resizeObserver.observe(this);
+//   }
 
-  /**
-   * Component disconnected callback.
-   */
-  disconnectedCallback(): void {
-    this._resizeObserver.disconnect();
-    super.disconnectedCallback();
-  }
+//   /**
+//    * Component disconnected callback.
+//    */
+//   disconnectedCallback(): void {
+//     this._resizeObserver.disconnect();
+//     super.disconnectedCallback();
+//   }
 
-  /**
-   * Set gallery columns.
-   */
-  protected _setColumnCount(): void {
-    const thumbnailSize =
-      this.galleryConfig?.controls.thumbnails.size ??
-      frigateCardConfigDefaults.event_gallery.controls.thumbnails.size;
-    const columns = this.galleryConfig?.controls.thumbnails.show_details
-      ? Math.max(1, Math.floor(this.clientWidth / THUMBNAIL_DETAILS_WIDTH_MIN))
-      : Math.max(
-          1,
-          Math.ceil(this.clientWidth / THUMBNAIL_WIDTH_MAX),
-          Math.ceil(this.clientWidth / thumbnailSize),
-        );
+//   /**
+//    * Set gallery columns.
+//    */
+//   protected _setColumnCount(): void {
+//     const thumbnailSize =
+//       this.galleryConfig?.controls.thumbnails.size ??
+//       frigateCardConfigDefaults.event_gallery.controls.thumbnails.size;
+//     const columns = this.galleryConfig?.controls.thumbnails.show_details
+//       ? Math.max(1, Math.floor(this.clientWidth / THUMBNAIL_DETAILS_WIDTH_MIN))
+//       : Math.max(
+//           1,
+//           Math.ceil(this.clientWidth / THUMBNAIL_WIDTH_MAX),
+//           Math.ceil(this.clientWidth / thumbnailSize),
+//         );
 
-    this.style.setProperty('--frigate-card-gallery-columns', String(columns));
-  }
+//     this.style.setProperty('--frigate-card-gallery-columns', String(columns));
+//   }
 
-  /**
-   * Handle gallery resize.
-   */
-  protected _resizeHandler(): void {
-    this._setColumnCount();
-  }
+//   /**
+//    * Handle gallery resize.
+//    */
+//   protected _resizeHandler(): void {
+//     this._setColumnCount();
+//   }
 
-  /**
-   * Determine whether the back arrow should be displayed.
-   * @returns `true` if the back arrow should be displayed, `false` otherwise.
-   */
-  protected _showBackArrow(): boolean {
-    return (
-      !!this.view?.context?.gallery?.previous &&
-      !!this.view.context.gallery.previous.target &&
-      this.view.context.gallery.previous.view === this.view.view
-    );
-  }
+//   /**
+//    * Determine whether the back arrow should be displayed.
+//    * @returns `true` if the back arrow should be displayed, `false` otherwise.
+//    */
+//   protected _shouldShowBackArrow(): boolean {
+//     return (
+//       !!this.view?.context?.gallery?.previous &&
+//       !!this.view.context.gallery.previous.query &&
+//       this.view.context.gallery.previous.view === this.view.view
+//     );
+//   }
 
-  /**
-   * Called when an update will occur.
-   * @param changedProps The changed properties
-   */
-  protected willUpdate(changedProps: PropertyValues): void {
-    if (changedProps.has('galleryConfig')) {
-      if (this.galleryConfig?.controls.thumbnails.show_details) {
-        this.setAttribute('details', '');
-      } else {
-        this.removeAttribute('details');
-      }
-      this._setColumnCount();
-      if (this.galleryConfig?.controls.thumbnails.size) {
-        this.style.setProperty(
-          '--frigate-card-thumbnail-size',
-          `${this.galleryConfig.controls.thumbnails.size}px`,
-        );
-      }
-    }
-  }
+//   /**
+//    * Called when an update will occur.
+//    * @param changedProps The changed properties
+//    */
+//   protected willUpdate(changedProps: PropertyValues): void {
+//     if (changedProps.has('galleryConfig')) {
+//       if (this.galleryConfig?.controls.thumbnails.show_details) {
+//         this.setAttribute('details', '');
+//       } else {
+//         this.removeAttribute('details');
+//       }
+//       this._setColumnCount();
+//       if (this.galleryConfig?.controls.thumbnails.size) {
+//         this.style.setProperty(
+//           '--frigate-card-thumbnail-size',
+//           `${this.galleryConfig.controls.thumbnails.size}px`,
+//         );
+//       }
+//     }
+//   }
 
-  /**
-   * Master render method.
-   * @returns A rendered template.
-   */
-  protected render(): TemplateResult | void {
-    if (
-      !this.hass ||
-      !this.view ||
-      !this.view.target ||
-      !this.view.target.children ||
-      !this.view.isGalleryView() ||
-      !this.cameras
-    ) {
-      return html``;
-    }
+//   // TODO: This is still going to show the gallery view (akin to HA media
+//   // browser). 
 
-    return html`
-      ${this._showBackArrow()
-        ? html` <ha-card
-            @click=${(ev) => {
-              if (this.view && this.view.context?.gallery?.previous) {
-                this.view.context.gallery.previous.dispatchChangeEvent(this);
-              }
-              stopEventFromActivatingCardWideActions(ev);
-            }}
-            outlined=""
-          >
-            <ha-icon .icon=${'mdi:arrow-left'}></ha-icon>
-          </ha-card>`
-        : ''}
-      ${this.view.target.children.map(
-        (child, index) =>
-          html`
-            ${child.can_expand
-              ? html`
-                  <ha-card
-                    @click=${(ev) => {
-                      if (this.hass && this.view) {
-                        fetchChildMediaAndDispatchViewChange(
-                          this,
-                          this.hass,
-                          this.view,
-                          child,
-                          {
-                            gallery: {
-                              previous: this.view,
-                            },
-                          },
-                        );
-                      }
-                      stopEventFromActivatingCardWideActions(ev);
-                    }}
-                    outlined=""
-                  >
-                    <div>${child.title}</div>
-                  </ha-card>
-                `
-              : html`<frigate-card-thumbnail
-                  .view=${this.view}
-                  .target=${this.view?.target ?? null}
-                  .childIndex=${index}
-                  .hass=${this.hass}
-                  .cameraConfig=${child.frigate?.cameraID
-                    ? this.cameras?.get(child.frigate.cameraID)
-                    : undefined}
-                  ?details=${!!this.galleryConfig?.controls.thumbnails.show_details}
-                  ?show_favorite_control=${!!this.galleryConfig?.controls.thumbnails
-                    .show_favorite_control}
-                  ?show_timeline_control=${!!this.galleryConfig?.controls.thumbnails
-                    .show_timeline_control}
-                  @click=${(ev: Event) => {
-                    if (this.view) {
-                      const targetView = this.view.getViewerViewForGalleryView();
-                      if (targetView) {
-                        this.view
-                          .evolve({
-                            view: targetView,
-                            childIndex: index,
-                          })
-                          .dispatchChangeEvent(this);
-                      }
-                    }
-                    stopEventFromActivatingCardWideActions(ev);
-                  }}
-                >
-                </frigate-card-thumbnail>`}
-          `,
-      )}
-    `;
-  }
+//   /**
+//    * Master render method.
+//    * @returns A rendered template.
+//    */
+//   protected render(): TemplateResult | void {
+//     const results = this.view?.queryResults?.getResults();
 
-  /**
-   * Get styles.
-   */
-  static get styles(): CSSResultGroup {
-    return unsafeCSS(galleryStyle);
-  }
-}
+//     if (
+//       !results ||
+//       !this.hass ||
+//       !this.view ||
+//       !this.view.isGalleryView() ||
+//       !this.cameras
+//     ) {
+//       return html``;
+//     }
+
+//     return html`
+//       ${this._shouldShowBackArrow()
+//         ? html` <ha-card
+//             @click=${(ev) => {
+//               if (this.view && this.view.context?.gallery?.previous) {
+//                 this.view.context.gallery.previous.dispatchChangeEvent(this);
+//               }
+//               stopEventFromActivatingCardWideActions(ev);
+//             }}
+//             outlined=""
+//           >
+//             <ha-icon .icon=${'mdi:arrow-left'}></ha-icon>
+//           </ha-card>`
+//         : ''}
+//       ${results.map((child, index) =>
+//           html`
+//             ${child.can_expand
+//               ? html`
+//                   <ha-card
+//                     @click=${(ev) => {
+//                       if (this.hass && this.view) {
+//                         fetchChildMediaAndDispatchViewChange(
+//                           this,
+//                           this.hass,
+//                           this.view,
+//                           child,
+//                           {
+//                             gallery: {
+//                               previous: this.view,
+//                             },
+//                           },
+//                         );
+//                       }
+//                       stopEventFromActivatingCardWideActions(ev);
+//                     }}
+//                     outlined=""
+//                   >
+//                     <div>${child.title}</div>
+//                   </ha-card>
+//                 `
+//               : html`<frigate-card-thumbnail
+//                   .view=${this.view}
+//                   .target=${this.view?.target ?? null}
+//                   .childIndex=${index}
+//                   .hass=${this.hass}
+//                   .cameraConfig=${child.frigate?.cameraID
+//                     ? this.cameras?.get(child.frigate.cameraID)
+//                     : undefined}
+//                   ?details=${!!this.galleryConfig?.controls.thumbnails.show_details}
+//                   ?show_favorite_control=${!!this.galleryConfig?.controls.thumbnails
+//                     .show_favorite_control}
+//                   ?show_timeline_control=${!!this.galleryConfig?.controls.thumbnails
+//                     .show_timeline_control}
+//                   @click=${(ev: Event) => {
+//                     if (this.view) {
+//                       const targetView = this.view.getViewerViewForGalleryView();
+//                       if (targetView) {
+//                         this.view
+//                           .evolve({
+//                             view: targetView,
+//                             childIndex: index,
+//                           })
+//                           .dispatchChangeEvent(this);
+//                       }
+//                     }
+//                     stopEventFromActivatingCardWideActions(ev);
+//                   }}
+//                 >
+//                 </frigate-card-thumbnail>`}
+//           `,
+//       )}
+//     `;
+//   }
+
+//   /**
+//    * Get styles.
+//    */
+//   static get styles(): CSSResultGroup {
+//     return unsafeCSS(galleryStyle);
+//   }
+// }
 
 declare global {
   interface HTMLElementTagNameMap {
-    'frigate-card-gallery-core': FrigateCardGalleryCore;
+    //'frigate-card-gallery-core': FrigateCardGalleryCore;
     'frigate-card-gallery': FrigateCardGallery;
   }
 }

src/components/live/live.ts

@@ -33,7 +33,6 @@ import {
 import { stopEventFromActivatingCardWideActions } from '../../utils/action.js';
 import { contentsChanged } from '../../utils/basic.js';
 import { getCameraIcon, getCameraTitle } from '../../utils/camera.js';
-import { getFullDependentBrowseMediaQueryParameters } from '../../utils/ha/browse-media.js';
 import {
   dispatchExistingMediaLoadedInfoAsEvent,
   dispatchMediaUnloadedEvent,
@@ -52,7 +51,7 @@ import '../surround.js';
 import { EmblaCarouselPlugins } from '../carousel.js';
 import { classMap } from 'lit/directives/class-map.js';
 import { updateElementStyleFromMediaLayoutConfig } from '../../utils/media-layout.js';
-import { DataManager } from '../../utils/data-manager.js';
+import { DataManager } from '../../utils/data/data-manager.js';
 import { HomeAssistant } from 'custom-card-helpers';
 import { dispatchMessageEvent, dispatchErrorMessageEvent } from '../message.js';
 import { HassEntity } from 'home-assistant-js-websocket';
@@ -212,16 +211,6 @@ export class FrigateCardLive extends LitElement {
       this.conditionState,
     ) as LiveConfig;
 
-    // Does not use getFullDependentBrowseMediaQueryParametersOrDispatchError to
-    // ensure that non-Frigate cameras will work in live view (they will not
-    // have a Frigate camera name).
-    const browseMediaParams = getFullDependentBrowseMediaQueryParameters(
-      this.hass,
-      this.cameras,
-      this.view.camera,
-      config.controls.thumbnails.media,
-    );
-
     // Notes:
     // - See use of liveConfig and not config below -- the carousel will
     //   independently override the liveConfig to reflect the camera in the
@@ -238,10 +227,9 @@ export class FrigateCardLive extends LitElement {
       html`<frigate-card-surround
         .hass=${this.hass}
         .view=${this.view}
-        .fetch=${true}
+        .fetchMedia=${config.controls.thumbnails.media}
         .thumbnailConfig=${config.controls.thumbnails}
         .timelineConfig=${config.controls.timeline}
-        .browseMediaParams=${browseMediaParams ?? undefined}
         .cameras=${this.cameras}
         .dataManager=${this.dataManager}
         .inBackground=${this._inBackground}
@@ -375,16 +363,19 @@ export class FrigateCardLiveCarousel extends LitElement {
     );
   }
 
+  protected _getSelectedCameraIndex(): number {
+    if (!this.cameras || !this.view) {
+      return 0;
+    }
+    return Math.max(0, Array.from(this.cameras.keys()).indexOf(this.view.camera));
+  }
+
   /**
    * Get the Embla options to use.
    * @returns An EmblaOptionsType object or undefined for no options.
    */
   protected _getOptions(): EmblaOptionsType {
     return {
-      startIndex:
-        this.cameras && this.view
-          ? Math.max(0, Array.from(this.cameras.keys()).indexOf(this.view.camera))
-          : 0,
       draggable: this.liveConfig?.draggable,
       loop: true,
     };
@@ -483,10 +474,9 @@ export class FrigateCardLiveCarousel extends LitElement {
     this.view
       .evolve({
         camera: Array.from(this.cameras.keys())[selectedCameraIndex],
-
-        // Reset the target.
-        target: null,
-        childIndex: null,
+        // Reset the query and query results.
+        query: null,
+        queryResults: null,
       })
       // Don't yet fetch thumbnails (they will be fetched when the carousel
       // settles).
@@ -624,6 +614,7 @@ export class FrigateCardLiveCarousel extends LitElement {
         ) as EmblaCarouselPlugins}
         .label="${title ? `${localize('common.live')}: ${title}` : ''}"
         .titlePopupConfig=${config.controls.title}
+        .selected=${this._getSelectedCameraIndex()}
         transitionEffect=${this._getTransitionEffect()}
         @frigate-card:media-carousel:select=${this._setViewHandler.bind(this)}
         @frigate-card:carousel:settle=${() => {

src/components/media-carousel.ts

@@ -126,6 +126,9 @@ export class FrigateCardMediaCarousel extends LitElement {
   @property({ attribute: false })
   public carouselPlugins?: EmblaCarouselPlugins;
 
+  @property({ attribute: false, type: Number })
+  public selected = 0;
+
   @property({ attribute: true })
   public transitionEffect?: TransitionEffect;
 
@@ -418,6 +421,7 @@ export class FrigateCardMediaCarousel extends LitElement {
 
     return html` <frigate-card-carousel
         ${ref(this._refCarousel)}
+        .selected=${this.selected ?? 0}
         .carouselOptions=${this.carouselOptions}
         .carouselPlugins=${this.carouselPlugins}
         transitionEffect=${ifDefined(this.transitionEffect)}

src/components/message.ts

@@ -177,9 +177,11 @@ export function dispatchErrorMessageEvent(
  */
 export function dispatchFrigateCardErrorEvent(
   element: EventTarget,
-  error: FrigateCardError,
+  error: FrigateCardError | Error,
 ): void {
-  dispatchErrorMessageEvent(element, error.message, { context: error.context });
+  dispatchErrorMessageEvent(element, error.message, {
+    ...(error instanceof FrigateCardError && { context: error.context }),
+  });
 }
 
 declare global {

src/components/surround.ts

@@ -7,29 +7,20 @@ import {
   unsafeCSS,
 } from 'lit';
 import { customElement, property } from 'lit/decorators.js';
-
 import surroundStyle from '../scss/surround.scss';
 import {
-  BrowseMediaQueryParameters,
   CameraConfig,
+  ClipsOrSnapshotsOrAll,
   ExtendedHomeAssistant,
-  FrigateBrowseMediaSource,
-  FrigateCardError,
   MiniTimelineControlConfig,
   ThumbnailsControlConfig,
 } from '../types.js';
 import { contentsChanged, dispatchFrigateCardEvent } from '../utils/basic.js';
-import {
-  getFirstTrueMediaChildIndex,
-  multipleBrowseMediaQueryMerged,
-} from '../utils/ha/browse-media';
-import { DataManager } from '../utils/data-manager';
+import { DataManager } from '../utils/data/data-manager.js';
 import { View } from '../view.js';
-import { dispatchFrigateCardErrorEvent } from './message.js';
 import { ThumbnailCarouselTap } from './thumbnail-carousel.js';
-
 import './surround-basic.js';
-import { ifDefined } from 'lit/directives/if-defined.js';
+import { changeViewToRecentEventsForCameraAndDependents } from '../utils/media-to-view';
 
 interface ThumbnailViewContext {
   // Whether or not to fetch thumbnails.
@@ -59,11 +50,9 @@ export class FrigateCardSurround extends LitElement {
   @property({ attribute: false })
   public inBackground?: boolean;
 
-  @property({ attribute: false })
-  public fetch = false;
-
+  // If fetchMedia is not specified, no fetching is done.
   @property({ attribute: false, hasChanged: contentsChanged })
-  public browseMediaParams?: BrowseMediaQueryParameters | BrowseMediaQueryParameters[];
+  public fetchMedia?: ClipsOrSnapshotsOrAll;
 
   @property({ attribute: false })
   public cameras?: Map<string, CameraConfig>;
@@ -79,32 +68,29 @@ export class FrigateCardSurround extends LitElement {
    */
   protected async _fetchMedia(): Promise<void> {
     if (
-      !this.fetch ||
+      !this.cameras ||
+      !this.dataManager ||
+      !this.fetchMedia ||
       this.inBackground ||
       !this.hass ||
       !this.view ||
-      this.view.target ||
+      this.view.query ||
       !this.thumbnailConfig ||
       this.thumbnailConfig.mode === 'none' ||
-      !this.browseMediaParams ||
       !(this.view.context?.thumbnails?.fetch ?? true)
     ) {
       return;
     }
-    let parent: FrigateBrowseMediaSource | null;
-    try {
-      parent = await multipleBrowseMediaQueryMerged(this.hass, this.browseMediaParams);
-    } catch (e) {
-      return dispatchFrigateCardErrorEvent(this, e as FrigateCardError);
-    }
-    if (getFirstTrueMediaChildIndex(parent) !== null) {
-      this.view
-        ?.evolve({
-          target: parent,
-          childIndex: null,
-        })
-        .dispatchChangeEvent(this);
-    }
+    await changeViewToRecentEventsForCameraAndDependents(
+      this,
+      this.hass,
+      this.dataManager,
+      this.cameras,
+      this.view,
+      {
+        mediaType: this.fetchMedia,
+      },
+    );
   }
 
   /**
@@ -170,25 +156,21 @@ export class FrigateCardSurround extends LitElement {
             slot=${this.thumbnailConfig.mode}
             .hass=${this.hass}
             .config=${this.thumbnailConfig}
+            .dataManager=${this.dataManager}
             .view=${this.view}
-            .target=${this.view.target}
             .cameras=${this.cameras}
-            selected=${ifDefined(this.view.childIndex ?? undefined)}
+            .selected=${this.view.queryResults?.getSelectedIndex() ?? undefined}
             @frigate-card:view:change=${(ev: CustomEvent) => changeDrawer(ev, 'close')}
             @frigate-card:thumbnail-carousel:tap=${(
               ev: CustomEvent<ThumbnailCarouselTap>,
             ) => {
-              const child: FrigateBrowseMediaSource | null =
-                ev.detail.target?.children?.[ev.detail.childIndex] ?? null;
-              if (child) {
+              const media = ev.detail.queryResults.getSelectedResult();
+              if (media) {
                 this.view
                   ?.evolve({
                     view: this.view.is('recording') ? 'recording' : 'media',
-                    target: ev.detail.target,
-                    childIndex: ev.detail.childIndex,
-                    ...(child.frigate?.cameraID && {
-                      camera: child.frigate?.cameraID,
-                    }),
+                    queryResults: ev.detail.queryResults,
+                    ...(media.getCameraID() && { camera: media.getCameraID() }),
                   })
                   .removeContext('timeline')
                   // Send the view change from the source of the tap event, so
@@ -200,7 +182,9 @@ export class FrigateCardSurround extends LitElement {
           >
           </frigate-card-thumbnail-carousel>`
         : ''}
-      ${this.timelineConfig?.mode && this.timelineConfig.mode !== 'none' && !this.inBackground
+      ${this.timelineConfig?.mode &&
+      this.timelineConfig.mode !== 'none' &&
+      !this.inBackground
         ? html` <frigate-card-timeline-core
             slot=${this.timelineConfig.mode}
             .hass=${this.hass}

src/components/thumbnail-carousel.ts

@@ -15,22 +15,19 @@ import thumbnailCarouselStyle from '../scss/thumbnail-carousel.scss';
 import {
   CameraConfig,
   ExtendedHomeAssistant,
-  FrigateBrowseMediaSource,
   ThumbnailsControlConfig,
 } from '../types.js';
 import { stopEventFromActivatingCardWideActions } from '../utils/action.js';
-import { contentsChanged, dispatchFrigateCardEvent } from '../utils/basic.js';
-import { isTrueMedia } from '../utils/ha/browse-media';
-import { View } from '../view.js';
+import { dispatchFrigateCardEvent } from '../utils/basic.js';
+import { MediaQueriesResults, View } from '../view.js';
 import { FrigateCardCarousel } from './carousel.js';
 import './thumbnail.js';
 import './carousel.js';
 import { ifDefined } from 'lit/directives/if-defined.js';
+import { DataManager } from '../utils/data/data-manager.js';
 
 export interface ThumbnailCarouselTap {
-  slideIndex: number;
-  target: FrigateBrowseMediaSource;
-  childIndex: number;
+  queryResults: MediaQueriesResults;
 }
 
 @customElement('frigate-card-thumbnail-carousel')
@@ -41,14 +38,12 @@ export class FrigateCardThumbnailCarousel extends LitElement {
   @property({ attribute: false })
   public view?: Readonly<View>;
 
-  // Use contentsChanged here to avoid the carousel rebuilding and resetting in
-  // front of the user, unless the contents have actually changed.
-  @property({ attribute: false, hasChanged: contentsChanged })
-  public target?: FrigateBrowseMediaSource | null;
-
   @property({ attribute: false })
   public cameras?: Map<string, CameraConfig>;
 
+  @property({ attribute: false })
+  public dataManager?: DataManager;
+
   protected _refCarousel: Ref<FrigateCardCarousel> = createRef();
 
   // Thumbnail carousels can expand (e.g. drawer-based carousels after the main
@@ -59,10 +54,14 @@ export class FrigateCardThumbnailCarousel extends LitElement {
   @property({ attribute: false })
   public config?: ThumbnailsControlConfig;
 
-  @property({ attribute: true, type: Number, reflect: true })
-  public selected?: number;
+  @property({ attribute: false })
+  public selected? = 0;
+
+  protected _carouselOptions?: EmblaOptionsType = {
+    containScroll: 'keepSnaps',
+    dragFree: true,
+  };
 
-  protected _carouselOptions?: EmblaOptionsType;
   protected _carouselPlugins: EmblaPluginType[] = [
     WheelGesturesPlugin({
       // Whether the carousel is vertical or horizontal, interpret y-axis wheel
@@ -99,31 +98,20 @@ export class FrigateCardThumbnailCarousel extends LitElement {
     super.disconnectedCallback();
   }
 
-  /**
-   * Get the Embla options to use.
-   * @returns An EmblaOptionsType object or undefined for no options.
-   */
-  protected _getOptions(): EmblaOptionsType {
-    return {
-      containScroll: 'keepSnaps',
-      dragFree: true,
-      startIndex: this.selected ?? 0,
-    };
-  }
   /**
    * Get slides to include in the render.
    * @returns The slides to include in the render.
    */
   protected _getSlides(): TemplateResult[] {
-    if (!this.target || !this.target.children || !this.target.children.length) {
+    if (!this.view?.query || !this.view.queryResults?.hasResults()) {
       return [];
     }
 
     const slides: TemplateResult[] = [];
-    for (let i = 0; i < this.target.children.length; ++i) {
-      const thumbnail = this._renderThumbnail(this.target, i, slides.length);
+    for (let i = 0; i < this.view.queryResults.getResultsCount(); ++i) {
+      const thumbnail = this._renderThumbnail(i);
       if (thumbnail) {
-        slides.push(thumbnail);
+        slides[i] = thumbnail;
       }
     }
     return slides;
@@ -152,30 +140,6 @@ export class FrigateCardThumbnailCarousel extends LitElement {
         this.selected === undefined ? '1.0' : '0.4',
       );
     }
-  
-    if (!this._carouselOptions) {
-      // Want to set the initial carousel options just before the first render
-      // in order to get the startIndex correct in the options. It is not safe
-      // to rely on carouselScrollTo() post update, since the nested carousel
-      // may not yet be actual rendered/created.
-      this._carouselOptions = this._getOptions();
-    }
-  }
-
-  /**
-   * The updated lifecycle callback for this element.
-   * @param changedProperties The properties that were changed in this render.
-   */
-  updated(changedProperties: PropertyValues): void {
-    super.updated(changedProperties);
-
-    if (changedProperties.has('selected')) {
-      this.updateComplete.then(() => {
-        if (this.selected !== undefined) {
-          this._refCarousel.value?.carouselScrollTo(this.selected);
-        }
-      });
-    }
   }
 
   /**
@@ -183,45 +147,40 @@ export class FrigateCardThumbnailCarousel extends LitElement {
    * @param mediaToRender The media item to render.
    * @returns A template or void if the item could not be rendered.
    */
-  protected _renderThumbnail(
-    parent: FrigateBrowseMediaSource,
-    childIndex: number,
-    slideIndex: number,
-  ): TemplateResult | void {
-    if (
-      !parent.children ||
-      !parent.children.length ||
-      !isTrueMedia(parent.children[childIndex])
-    ) {
+  protected _renderThumbnail(index: number): TemplateResult | void {
+    const media = this.view?.queryResults?.getResult(index) ?? null;
+    const cameraConfig = media ? this.cameras?.get(media.getCameraID()) : null;
+    if (!media || !cameraConfig || !this.view) {
       return;
     }
 
     const classes = {
       embla__slide: true,
-      'slide-selected': this.selected === childIndex,
+      'slide-selected': this.selected === index,
     };
 
-    const cameraConfig = this.view?.camera ? this.cameras?.get(this.view.camera) : null;
     return html` <frigate-card-thumbnail
+      class="${classMap(classes)}"
+      .dataManager=${this.dataManager}
       .hass=${this.hass}
+      .media=${media}
+      .cameraConfig=${cameraConfig}
       .view=${this.view}
-      .target=${parent}
-      .childIndex=${childIndex}
-      .mediaSeek=${this.view?.context?.mediaViewer?.seek.get(childIndex)}
-      .cameraConfig=${cameraConfig ?? undefined}
-      ?details=${this.config?.show_details}
+      .mediaSeek=${this.view?.context?.mediaViewer?.seek.get(index)}
+      ?details=${!!this.config?.show_details}
       ?show_favorite_control=${this.config?.show_favorite_control}
       ?show_timeline_control=${this.config?.show_timeline_control}
-      class="${classMap(classes)}"
-      @click=${(ev) => {
-        if (this._refCarousel.value?.carouselClickAllowed()) {
+      @click=${(ev: Event) => {
+        if (
+          this.view &&
+          this.view.queryResults &&
+          this._refCarousel.value?.carouselClickAllowed()
+        ) {
           dispatchFrigateCardEvent<ThumbnailCarouselTap>(
             this,
             'thumbnail-carousel:tap',
             {
-              slideIndex: slideIndex,
-              target: parent,
-              childIndex: childIndex,
+              queryResults: this.view.queryResults.clone().selectResult(index),
             },
           );
         }
@@ -257,6 +216,7 @@ export class FrigateCardThumbnailCarousel extends LitElement {
     return html`<frigate-card-carousel
       ${ref(this._refCarousel)}
       direction=${ifDefined(this._getDirection())}
+      .selected=${this.selected ?? 0}
       .carouselOptions=${this._carouselOptions}
       .carouselPlugins=${this._carouselPlugins}
     >

src/components/thumbnail.ts

@@ -3,30 +3,24 @@ import fromUnixTime from 'date-fns/fromUnixTime';
 import { CSSResult, html, LitElement, TemplateResult, unsafeCSS } from 'lit';
 import { customElement, property } from 'lit/decorators.js';
 import { classMap } from 'lit/directives/class-map.js';
-
 import { localize } from '../localize/localize.js';
 import thumbnailDetailsStyle from '../scss/thumbnail-details.scss';
 import thumbnailFeatureEventStyle from '../scss/thumbnail-feature-event.scss';
 import thumbnailFeatureRecordingStyle from '../scss/thumbnail-feature-recording.scss';
 import thumbnailStyle from '../scss/thumbnail.scss';
 import { stopEventFromActivatingCardWideActions } from '../utils/action.js';
-import { errorToConsole, prettifyTitle } from '../utils/basic.js';
+import { getDurationString, prettifyTitle } from '../utils/basic.js';
 import { getCameraTitle } from '../utils/camera.js';
-import { retainEvent } from '../utils/frigate.js';
-import { getEventDurationString } from '../utils/frigate.js';
 import { renderTask } from '../utils/task.js';
 import { createFetchThumbnailTask } from '../utils/thumbnail.js';
 import { View } from '../view.js';
 import type { MediaSeek } from './viewer.js';
 import { TaskStatus } from '@lit-labs/task';
 
-import type {
-  CameraConfig,
-  ExtendedHomeAssistant,
-  FrigateBrowseMediaSource,
-  FrigateEvent,
-  FrigateRecording,
-} from '../types.js';
+import type { CameraConfig, ExtendedHomeAssistant } from '../types.js';
+import { ViewMedia } from '../view-media.js';
+import { DataManager } from '../utils/data/data-manager.js';
+
 // The minimum width of a thumbnail with details enabled.
 export const THUMBNAIL_DETAILS_WIDTH_MIN = 300;
 
@@ -133,26 +127,36 @@ export class FrigateCardThumbnailFeatureRecording extends LitElement {
 @customElement('frigate-card-thumbnail-details-event')
 export class FrigateCardThumbnailDetailsEvent extends LitElement {
   @property({ attribute: false })
-  public event?: FrigateEvent;
+  public media?: ViewMedia;
 
   @property({ attribute: false })
   public mediaSeek?: MediaSeek;
 
   protected render(): TemplateResult | void {
-    if (!this.event) {
+    if (!this.media || !this.media.isEvent()) {
       return;
     }
-    const score = (this.event.top_score * 100).toFixed(2) + '%';
+    const score = this.media.getScore();
+    const startTime = this.media.getStartTime();
+    const endTime = this.media.getEndTime();
+    const what = this.media.getWhat();
+
     return html` <div class="left">
-        <div class="larger">${prettifyTitle(this.event.label)}</div>
-        <div>
+        ${what ? html`<div class="larger">${prettifyTitle(what.join(', '))}</div>` : ``}
+        ${startTime
+          ? html` <div>
                 <span class="heading">${localize('event.start')}:</span>
-          <span>${format(fromUnixTime(this.event.start_time), 'HH:mm:ss')}</span>
+                <span>${format(startTime, 'HH:mm:ss')}</span>
               </div>
               <div>
                 <span class="heading">${localize('event.duration')}:</span>
-          <span>${getEventDurationString(this.event)}</span>
-        </div>
+                <span
+                  >${endTime
+                    ? getDurationString(startTime, endTime)
+                    : localize('event.in_progress')}</span
+                >
+              </div>`
+          : ``}
         ${this.mediaSeek
           ? html` <div>
               <span class="heading">${localize('event.seek')}</span>
@@ -160,9 +164,11 @@ export class FrigateCardThumbnailDetailsEvent extends LitElement {
             </div>`
           : html``}
       </div>
-      <div class="right">
-        <span class="larger">${score}</span>
-      </div>`;
+      ${score
+        ? html`<div class="right">
+            <span class="larger">${(score * 100).toFixed(2) + '%'}</span>
+          </div>`
+        : ``}`;
   }
 
   static get styles(): CSSResult {
@@ -173,17 +179,21 @@ export class FrigateCardThumbnailDetailsEvent extends LitElement {
 @customElement('frigate-card-thumbnail-details-recording')
 export class FrigateCardThumbnailDetailsRecording extends LitElement {
   @property({ attribute: false })
-  public recording?: FrigateRecording;
+  public media?: ViewMedia;
 
   @property({ attribute: false })
   public mediaSeek?: MediaSeek;
 
+  @property({ attribute: false })
+  public cameraTitle?: string;
+
   protected render(): TemplateResult | void {
-    if (!this.recording) {
+    if (!this.media) {
       return;
     }
+    const eventCount = this.media.getEventCount();
     return html`<div class="left">
-        <div class="larger">${prettifyTitle(this.recording.camera) || ''}</div>
+        <div class="larger">${this.cameraTitle ?? ''}</div>
         ${this.mediaSeek
           ? html` <div>
               <span class="heading">${localize('recording.seek')}</span>
@@ -191,10 +201,12 @@ export class FrigateCardThumbnailDetailsRecording extends LitElement {
             </div>`
           : html``}
       </div>
-      <div class="right">
-        <span class="larger">${this.recording.events}</span>
+      ${eventCount !== null
+        ? html`<div class="right">
+            <span class="larger">${eventCount}</span>
             <span>${localize('recording.events')}</span>
-      </div>`;
+          </div>`
+        : ``}`;
   }
 
   static get styles(): CSSResult {
@@ -204,6 +216,21 @@ export class FrigateCardThumbnailDetailsRecording extends LitElement {
 
 @customElement('frigate-card-thumbnail')
 export class FrigateCardThumbnail extends LitElement {
+  // HomeAssistant object may be required for thumbnail signing (for Frigate
+  // events).
+  @property({ attribute: false })
+  public hass?: ExtendedHomeAssistant;
+
+  // DataManager used for marking media as favorite.
+  @property({ attribute: false })
+  public dataManager?: DataManager;
+
+  @property({ attribute: true })
+  public media?: ViewMedia;
+
+  @property({ attribute: false })
+  public cameraConfig?: CameraConfig;
+
   @property({ attribute: true, type: Boolean })
   public details = false;
 
@@ -213,160 +240,123 @@ export class FrigateCardThumbnail extends LitElement {
   @property({ attribute: true, type: Boolean })
   public show_timeline_control = false;
 
-  // ======================
-  // Target-based interface
-  // ======================
-  @property({ attribute: false })
-  public target?: FrigateBrowseMediaSource | null;
-
-  @property({ attribute: false })
-  public childIndex?: number;
-
   @property({ attribute: false })
   public mediaSeek?: MediaSeek;
 
-  // ===================================================
-  // Raw interface (can override target-based interface)
-  // ===================================================
-  @property({ attribute: true })
-  public thumbnail?: string;
-
-  @property({ attribute: true })
-  public label?: string;
-
-  @property({ attribute: false })
-  public event?: FrigateEvent;
-
-  // ================================
-  // Optional parameters for controls
-  // ================================
   @property({ attribute: false })
   public view?: Readonly<View>;
 
-  @property({ attribute: false })
-  public hass?: ExtendedHomeAssistant;
-
-  @property({ attribute: false })
-  public cameraConfig?: CameraConfig;
-
   /**
    * Render the element.
    * @returns A template to display to the user.
    */
   protected render(): TemplateResult | void {
-    let event: FrigateEvent | null = null;
-    let recording: FrigateRecording | null = null;
-    let thumbnail: string | null = null;
-    let label: string | null = null;
-
-    // Take the event / thumbnail / label from the data-bound media (if specified).
-    if (this.target && this.target.children && this.childIndex !== undefined) {
-      const media = this.target.children[this.childIndex];
-      event = media.frigate?.event ?? null;
-      recording = media.frigate?.recording ?? null;
-      thumbnail = media.thumbnail;
-      label = media.title;
-    }
-
-    // Always give the overrides preference (if specified).
-    if (this.event) {
-      event = this.event;
-    }
-    thumbnail = this.thumbnail ? this.thumbnail : thumbnail;
-    label = this.label ? this.label : label;
-
-    if (!event && !recording) {
+    if (!this.media || !this.cameraConfig) {
       return;
     }
 
+    const thumbnail = this.media.getThumbnail(this.cameraConfig);
+    const title = this.media.getTitle(this.cameraConfig) ?? '';
+
     const starClasses = {
       star: true,
-      starred: !!event?.retain_indefinitely,
+      starred: !!this.media?.isFavorite(),
     };
 
+    const shouldShowTimelineControl =
+      this.show_timeline_control &&
+      this.view &&
+      (!this.media.isRecording() ||
+        // Only show timeline control if the recording has a start & end time.
+        (this.media.getStartTime() && this.media.getEndTime()));
+
     const clientID = this.cameraConfig?.frigate.client_id;
-    return html` ${event
+    return html` ${this.media.isEvent()
       ? html`<frigate-card-thumbnail-feature-event
-          aria-label="${label ?? ''}"
-          title="${label ?? ''}"
+          aria-label="${title ?? ''}"
+          title=${title}
           .hass=${this.hass}
           .thumbnail=${thumbnail ?? undefined}
-          .label=${label ?? undefined}
         ></frigate-card-thumbnail-feature-event>`
-      : recording
+      : this.media.isRecording()
       ? html`<frigate-card-thumbnail-feature-recording
-          aria-label="${label ?? ''}"
-          title="${label ?? ''}"
+          aria-label="${title ?? ''}"
+          title="${title ?? ''}"
           .cameraTitle=${this.details || !this.cameraConfig || !this.hass
             ? undefined
             : getCameraTitle(this.hass, this.cameraConfig)}
-          .date=${recording ? fromUnixTime(recording.start_time) : undefined}
+          .date=${this.media.getStartTime() ?? undefined}
         ></frigate-card-thumbnail-feature-recording>`
       : html``}
     ${this.show_favorite_control && event && this.hass && clientID
       ? html` <ha-icon
             class="${classMap(starClasses)}"
-            icon=${event?.retain_indefinitely ? 'mdi:star' : 'mdi:star-outline'}
+            icon=${this.media.isFavorite() ? 'mdi:star' : 'mdi:star-outline'}
             title=${localize('thumbnail.retain_indefinitely')}
             @click=${(ev: Event) => {
               stopEventFromActivatingCardWideActions(ev);
-              if (event && this.hass && clientID) {
-                retainEvent(this.hass, clientID, event.id, !event.retain_indefinitely)
-                  .then(() => {
-                    if (event) {
-                      event.retain_indefinitely = !event.retain_indefinitely;
-                      this.requestUpdate();
-                    }
-                  })
-                  .catch((e) => {
-                    errorToConsole(e);
-                  });
+              if (this.hass && this.cameraConfig && this.media) {
+                this.dataManager?.favoriteMedia(
+                  this.hass,
+                  this.cameraConfig,
+                  this.media,
+                  !this.media?.isFavorite(),
+                );
               }
             }}
           /></ha-icon>`
       : ``}
-    ${this.details && event
+    ${this.details && this.media.isEvent()
       ? html`<frigate-card-thumbnail-details-event
-          .event=${event ?? undefined}
+          .media=${this.media ?? undefined}
           .mediaSeek=${this.mediaSeek}
         ></frigate-card-thumbnail-details-event>`
-      : this.details && recording
+      : this.details && this.media.isRecording()
       ? html`<frigate-card-thumbnail-details-recording
-          .recording=${recording ?? undefined}
+          .media=${this.media ?? undefined}
+          .cameraTitle=${getCameraTitle(this.hass, this.cameraConfig)}
           .mediaSeek=${this.mediaSeek}
         ></frigate-card-thumbnail-details-recording>`
       : html``}
-    ${this.show_timeline_control
+    ${shouldShowTimelineControl
       ? html`<ha-icon
           class="timeline"
           icon="mdi:target"
           title=${localize('thumbnail.timeline')}
           @click=${(ev: Event) => {
             stopEventFromActivatingCardWideActions(ev);
-            if (event) {
+            if (!this.view || !this.media) {
+              return;
+            }
+            if (this.media.isEvent()) {
               this.view
-                ?.evolve({
+                .evolve({
                   view: 'timeline',
-                  target: this.target,
-                  childIndex: this.childIndex ?? null,
+                  queryResults: this.view.queryResults
+                    ?.clone()
+                    .selectResultIfFound((media) => media === this.media),
                 })
                 .removeContext('timeline')
                 .dispatchChangeEvent(this);
-            } else if (recording) {
+            } else if (this.media.isRecording()) {
+              const startTime = this.media.getStartTime();
+              const endTime = this.media.getStartTime();
+              if (!startTime || !endTime) {
+                return;
+              }
               // Specifically reset the media target/childIndex, as we cannot
               // 'select' an hour in the timeline rather we set the window to
               // matching values.
               this.view
                 ?.evolve({
                   view: 'timeline',
-                  target: null,
-                  childIndex: null,
+                  query: null,
                 })
                 .mergeInContext({
                   timeline: {
                     window: {
-                      start: fromUnixTime(recording.start_time),
-                      end: fromUnixTime(recording.end_time),
+                      start: startTime,
+                      end: endTime,
                     },
                   },
                 })

src/components/timeline.ts

@@ -2,7 +2,7 @@ import { CSSResultGroup, html, LitElement, TemplateResult, unsafeCSS } from 'lit
 import { customElement, property } from 'lit/decorators.js';
 import timelineStyle from '../scss/timeline.scss';
 import { CameraConfig, ExtendedHomeAssistant, TimelineConfig } from '../types';
-import { DataManager } from '../utils/data-manager';
+import { DataManager } from '../utils/data/data-manager';
 import { View } from '../view';
 import './surround.js';
 import './timeline-core.js';
@@ -43,7 +43,6 @@ export class FrigateCardTimeline extends LitElement {
       .view=${this.view}
       .thumbnailConfig=${this.timelineConfig.controls.thumbnails}
       .cameras=${this.cameras}
-      .fetch=${false}
     >
       <frigate-card-timeline-core
         .hass=${this.hass}

src/components/viewer.ts

@@ -16,30 +16,21 @@ import { renderProgressIndicator } from '../components/message.js';
 import viewerStyle from '../scss/viewer.scss';
 import viewerCarouselStyle from '../scss/viewer-carousel.scss';
 import {
-  BrowseMediaNeighbors,
-  BrowseMediaQueryParameters,
   CameraConfig,
   CardWideConfig,
   ExtendedHomeAssistant,
-  FrigateBrowseMediaSource,
   frigateCardConfigDefaults,
   FrigateCardMediaPlayer,
   MediaLoadedInfo,
+  ResolvedMedia,
   TransitionEffect,
   ViewerConfig,
 } from '../types.js';
 import { stopEventFromActivatingCardWideActions } from '../utils/action.js';
 import { contentsChanged } from '../utils/basic.js';
-import {
-  fetchLatestMediaAndDispatchViewChange,
-  getEventStartTime,
-  getFullDependentBrowseMediaQueryParametersOrDispatchError,
-  isTrueMedia,
-  multipleBrowseMediaQueryMerged,
-  overrideMultiBrowseMediaQueryParameters,
-} from '../utils/ha/browse-media.js';
+import { getFullDependentBrowseMediaQueryParametersOrDispatchError } from '../utils/ha/browse-media.js';
 import { ResolvedMediaCache, resolveMedia } from '../utils/ha/resolved-media.js';
-import { View } from '../view.js';
+import { MediaQueriesResults, View } from '../view.js';
 import { AutoMediaPlugin } from './embla-plugins/automedia.js';
 import { Lazyload } from './embla-plugins/lazyload.js';
 import {
@@ -55,8 +46,13 @@ import '../patches/ha-hls-player';
 import './surround.js';
 import { renderTask } from '../utils/task.js';
 import { updateElementStyleFromMediaLayoutConfig } from '../utils/media-layout.js';
-import { DataManager } from '../utils/data-manager.js';
-import { changeViewToRecentRecordingForCameraAndDependents } from '../utils/media-to-view.js';
+import { DataManager } from '../utils/data/data-manager.js';
+import {
+  changeViewToRecentEventsForCameraAndDependents,
+  changeViewToRecentRecordingForCameraAndDependents,
+} from '../utils/media-to-view.js';
+import { ViewMedia, ViewMediaClassifier } from '../view-media.js';
+import { guard } from 'lit/directives/guard.js';
 
 export interface MediaSeek {
   // Specifies the point at which this recording should be played, the
@@ -123,10 +119,10 @@ export class FrigateCardViewer extends LitElement {
         this.view.camera,
       );
 
-    if (!this.view.target) {
-      // If the target is not specified, the view must tell us which mediaType
-      // to search for. When the target *is* specified, the view is not required
-      // to indicate the media type (e.g. the mixed 'events' view from the
+    if (!this.view.queryResults?.hasResults()) {
+      // If the query is not specified, the view must tell us which mediaType to
+      // search for. When the query *is* specified, the view is not required to
+      // indicate the media type (e.g. the mixed 'media' view from the
       // timeline).
       const mediaType = this.view.getMediaType();
       if (!browseMediaQueryParameters || !mediaType) {
@@ -145,13 +141,15 @@ export class FrigateCardViewer extends LitElement {
           },
         );
       } else {
-        fetchLatestMediaAndDispatchViewChange(
+        changeViewToRecentEventsForCameraAndDependents(
           this,
           this.hass,
+          this.dataManager,
+          this.cameras,
           this.view,
-          overrideMultiBrowseMediaQueryParameters(browseMediaQueryParameters, {
-            mediaType: mediaType,
-          }),
+          {
+            targetView: mediaType === 'clips' ? 'clip' : 'snapshot',
+          },
         );
       }
       return renderProgressIndicator({ cardWideConfig: this.cardWideConfig });
@@ -160,7 +158,6 @@ export class FrigateCardViewer extends LitElement {
     return html` <frigate-card-surround
       .hass=${this.hass}
       .view=${this.view}
-      .fetch=${false}
       .thumbnailConfig=${this.viewerConfig.controls.thumbnails}
       .timelineConfig=${this.viewerConfig.controls.timeline}
       .dataManager=${this.dataManager}
@@ -169,8 +166,8 @@ export class FrigateCardViewer extends LitElement {
       <frigate-card-viewer-carousel
         .hass=${this.hass}
         .view=${this.view}
+        .cameras=${this.cameras}
         .viewerConfig=${this.viewerConfig}
-        .browseMediaQueryParameters=${browseMediaQueryParameters}
         .resolvedMediaCache=${this.resolvedMediaCache}
         .cardWideConfig=${this.cardWideConfig}
       >
@@ -204,46 +201,52 @@ export class FrigateCardViewerCarousel extends LitElement {
   @property({ attribute: false, hasChanged: contentsChanged })
   public viewerConfig?: ViewerConfig;
 
-  @property({ attribute: false })
-  public browseMediaQueryParameters?: BrowseMediaQueryParameters[] | null;
-
   @property({ attribute: false })
   public resolvedMediaCache?: ResolvedMediaCache;
 
   @property({ attribute: false })
   public cardWideConfig?: CardWideConfig;
 
-  protected _refMediaCarousel: Ref<FrigateCardMediaCarousel> = createRef();
+  @property({ attribute: false })
+  public cameras?: Map<string, CameraConfig>;
 
-  // Mapping of slide # to FrigateBrowseMediaSource child #.
-  // (Folders are not media items that can be rendered).
-  protected _slideToChild: Record<number, number> = {};
+  protected _refMediaCarousel: Ref<FrigateCardMediaCarousel> = createRef();
 
   protected _carouselOptions?: EmblaOptionsType;
   protected _carouselPlugins?: EmblaPluginType[];
 
   // A task to resolve target media if lazy loading is disabled.
   protected _mediaResolutionTask = new Task<
-    [FrigateBrowseMediaSource | null | undefined],
+    [ViewerConfig | undefined, Map<string, CameraConfig> | undefined, View | undefined],
     void
   >(
     this,
-    async ([target]: (FrigateBrowseMediaSource | null | undefined)[]): Promise<void> => {
-      for (
-        let i = 0;
-        !this.viewerConfig?.lazy_load &&
-        this.hass &&
-        target &&
-        target.children &&
-        i < (target.children || []).length;
-        ++i
+    async ([viewerConfig, cameras, view]: [
+      ViewerConfig | undefined,
+      Map<string, CameraConfig> | undefined,
+      View | undefined,
+    ]): Promise<void> => {
+      if (
+        !this.hass ||
+        !viewerConfig?.lazy_load ||
+        !cameras ||
+        !view ||
+        !view.queryResults?.hasResults()
       ) {
-        if (isTrueMedia(target.children[i])) {
-          await resolveMedia(this.hass, target.children[i], this.resolvedMediaCache);
+        return;
       }
+      const promises: Promise<ResolvedMedia | null>[] = [];
+      view.queryResults?.getResults()?.forEach((media: ViewMedia) => {
+        const mediaContentID = media.getContentID(cameras.get(media.getCameraID()));
+        if (this.hass && mediaContentID) {
+          promises.push(
+            resolveMedia(this.hass, mediaContentID, this.resolvedMediaCache),
+          );
         }
+      });
+      await Promise.all(promises);
     },
-    () => [this.view?.target],
+    () => [this.viewerConfig, this.cameras, this.view],
   );
 
   /**
@@ -251,27 +254,8 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @param changedProperties The properties that were changed in this render.
    */
   updated(changedProperties: PropertyValues): void {
-    const frigateCardCarousel = this._refMediaCarousel.value?.frigateCardCarousel();
-
-    if (frigateCardCarousel && changedProperties.has('view')) {
+    if (changedProperties.has('view')) {
       const oldView = changedProperties.get('view') as View | undefined;
-      if (oldView) {
-        if (
-          oldView.target === this.view?.target &&
-          oldView.childIndex !== this.view.childIndex
-        ) {
-          const slide = this._getSlideForChild(this.view.childIndex);
-          if (
-            slide !== null &&
-            slide !== frigateCardCarousel.getCarouselSelected()?.index
-          ) {
-            // If the media target is the same as already loaded, but isn't of
-            // the selected slide, scroll to that slide.
-            frigateCardCarousel.carouselScrollTo(slide);
-          }
-        }
-      }
-
       // Seek into the video if the seek time has changed (this is also called
       // on media load, since the media may or may not have been loaded at
       // this point).
@@ -282,21 +266,6 @@ export class FrigateCardViewerCarousel extends LitElement {
     super.updated(changedProperties);
   }
 
-  /**
-   * Get the slide number given a media child number.
-   * @param childIndex The child index (relative to `view.target`)
-   * @returns A number or null if the child is not found.
-   */
-  protected _getSlideForChild(childIndex: number | null | undefined): number | null {
-    if (childIndex === undefined || childIndex === null) {
-      return null;
-    }
-    const slideIndex = Object.keys(this._slideToChild).find(
-      (key) => this._slideToChild[key] === childIndex,
-    );
-    return slideIndex !== undefined ? Number(slideIndex) : null;
-  }
-
   /**
    * Get the transition effect to use.
    * @returns An TransitionEffect object.
@@ -308,18 +277,6 @@ export class FrigateCardViewerCarousel extends LitElement {
     );
   }
 
-  /**
-   * Get the Embla options to use.
-   * @returns An EmblaOptionsType object or undefined for no options.
-   */
-  protected _getOptions(): EmblaOptionsType {
-    return {
-      // Start the carousel on the selected child number.
-      startIndex: this._getSlideForChild(this.view?.childIndex) ?? 0,
-      draggable: this.viewerConfig?.draggable ?? true,
-    };
-  }
-
   /**
    * The the HLS player on a slide (or current slide if not provided.)
    * @param slide An optional slide.
@@ -344,10 +301,7 @@ export class FrigateCardViewerCarousel extends LitElement {
   protected _getPlugins(): EmblaPluginType[] {
     return [
       // Only enable wheel plugin if there is more than one media item.
-      ...(this.view &&
-      this.view.target &&
-      this.view.target.children &&
-      this.view.target.children.length > 1
+      ...(this.view?.queryResults?.getResultsCount() ?? 0 > 1
         ? [
             WheelGesturesPlugin({
               // Whether the carousel is vertical or horizontal, interpret y-axis wheel
@@ -384,42 +338,20 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @returns A BrowseMediaNeighbors with indices and objects of true media
    * neighbors.
    */
-  protected _getMediaNeighbors(): BrowseMediaNeighbors | null {
-    if (
-      !this.view ||
-      !this.view.target ||
-      !this.view.target.children ||
-      this.view.childIndex === null
-    ) {
-      return null;
+  protected _getMediaNeighbors(): [ViewMedia | null, ViewMedia | null] {
+    const selectedIndex = this.view?.queryResults?.getSelectedIndex() ?? null;
+    const resultCount = this.view?.queryResults?.getResultsCount() ?? 0;
+    if (!this.view || !this.view.queryResults || selectedIndex === null) {
+      return [null, null];
     }
 
-    // Work backwards from the index to get the previous real media.
-    let prevIndex: number | null = null;
-    for (let i = this.view.childIndex - 1; i >= 0; i--) {
-      const media = this.view.target.children[i];
-      if (media && isTrueMedia(media)) {
-        prevIndex = i;
-        break;
-      }
-    }
-
-    // Work forwards from the index to get the next real media.
-    let nextIndex: number | null = null;
-    for (let i = this.view.childIndex + 1; i < this.view.target.children.length; i++) {
-      const media = this.view.target.children[i];
-      if (media && isTrueMedia(media)) {
-        nextIndex = i;
-        break;
-      }
-    }
-
-    return {
-      previousIndex: prevIndex,
-      previous: prevIndex != null ? this.view.target.children[prevIndex] : null,
-      nextIndex: nextIndex,
-      next: nextIndex != null ? this.view.target.children[nextIndex] : null,
-    };
+    const previous: ViewMedia | null =
+      selectedIndex > 0 ? this.view.queryResults.getResult(selectedIndex - 1) : null;
+    const next: ViewMedia | null =
+      selectedIndex + 1 < resultCount
+        ? this.view.queryResults.getResult(selectedIndex + 1)
+        : null;
+    return [previous, next];
   }
 
   /**
@@ -428,92 +360,56 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @param snapshot The snapshot to find a matching clip for.
    * @returns The view that would show the matching clip.
    */
-  protected async _findRelatedClipView(
-    snapshot: FrigateBrowseMediaSource,
-  ): Promise<View | null> {
+  protected async _createRelatedClipView(targetIndex: number): Promise<View | null> {
+    const media = this.view?.queryResults?.getResult(targetIndex);
+
     if (
       !this.hass ||
       !this.view ||
-      !this.view.target ||
-      !this.view.target.children ||
-      !this.view.target.children.length ||
-      !this.browseMediaQueryParameters
+      !media ||
+      // If this specific media item has no clip, then do nothing (even if all
+      // the other media items do).
+      !ViewMediaClassifier.isFrigateEvent(media) ||
+      !media.hasClip() ||
+      !this.view.query?.areEventQueries()
     ) {
       return null;
     }
 
-    const snapshotStartTime = getEventStartTime(snapshot);
-    if (!snapshotStartTime) {
-      return null;
-    }
+    const newResults: ViewMedia[] = [];
+    let newSelectedIndex: number | null = null;
 
-    // Heuristic: At this point, the user has a particular snapshot that they
-    // are interested in and want to see a related clip, yet the viewer code
-    // does not know the exact search criteria that led to that snapshot (e.g.
-    // it could be a 10-deep folder in the gallery). To give the user to ability
-    // to 'navigate' in the clips view once they change into that mode, this
-    // heuristic finds the earliest and latest snapshot that the user is
-    // currently viewing and mirrors that range into the clips view. Then,
-    // within the results see if there's a clip that matches the same time as
-    // the snapshot.
-    let earliest: number | null = null;
-    let latest: number | null = null;
-    for (let i = 0; i < this.view.target.children.length; i++) {
-      const child = this.view.target.children[i];
-      if (!isTrueMedia(child)) {
+    // Convert the query to a clips equivalent.
+    const newQuery = this.view.query.clone();
+    newQuery.convertToClipsQueries();
+
+    // Regenerate the whole results stack.
+    for (let i = 0; i < (this.view.queryResults?.getResultsCount() ?? 0); ++i) {
+      const media = this.view.queryResults?.getResult(i);
+      if (!media || !ViewMediaClassifier.isFrigateEvent(media)) {
         continue;
       }
-      const startTime = getEventStartTime(child);
-
-      if (startTime && (earliest === null || startTime < earliest)) {
-        earliest = startTime;
-      }
-      if (startTime && (latest === null || startTime > latest)) {
-        latest = startTime;
+      const clipMedia = media.getClipEquivalent();
+      if (clipMedia) {
+        newResults.push(clipMedia);
+        if (i === targetIndex) {
+          newSelectedIndex = i;
         }
       }
-    if (!earliest || !latest) {
+    }
+    if (newSelectedIndex === null) {
       return null;
     }
 
-    let clips: FrigateBrowseMediaSource | null;
+    const newQueryResults = new MediaQueriesResults(newResults);
+    newQueryResults.selectResult(newSelectedIndex);
 
-    const params = overrideMultiBrowseMediaQueryParameters(
-      this.browseMediaQueryParameters,
-      {
-        mediaType: 'clips',
-        before: latest,
-        after: earliest,
-      },
-    );
-
-    try {
-      clips = await multipleBrowseMediaQueryMerged(this.hass, params);
-    } catch (e) {
-      // This is best effort.
-      return null;
-    }
-
-    if (!clips || !clips.children || !clips.children.length) {
-      return null;
-    }
-
-    for (let i = 0; i < clips.children.length; i++) {
-      const child = clips.children[i];
-      if (!isTrueMedia(child)) {
-        continue;
-      }
-      const clipStartTime = getEventStartTime(child);
-      if (clipStartTime && clipStartTime === snapshotStartTime) {
     return this.view.evolve({
       view: 'clip',
-          target: clips,
-          childIndex: i,
+      query: newQuery,
+      queryResults: newQueryResults,
     });
   }
-    }
-    return null;
-  }
 
   /**
    * Handle the user selecting a new slide in the carousel.
@@ -523,13 +419,15 @@ export class FrigateCardViewerCarousel extends LitElement {
       return;
     }
 
-    // Update the childIndex in the view.
-    const childIndex = this._slideToChild[ev.detail.index];
-    if (childIndex !== undefined) {
+    // The slide may already be selected on load, so don't dispatch a new view
+    // unless necessary.
+    if (ev.detail.index !== this.view.queryResults?.getSelectedIndex()) {
       this.view
         .evolve({
-          childIndex: childIndex,
+          queryResults: this.view.queryResults?.clone().selectResult(ev.detail.index),
         })
+        // Ensure the timeline is able to update its position.
+        .mergeInContext({ timeline: { noSetWindow: false } })
         .dispatchChangeEvent(this);
     }
   }
@@ -539,11 +437,11 @@ export class FrigateCardViewerCarousel extends LitElement {
    * default location will be the Chromecast receiver, not HA).
    * @param url The media URL
    */
-  protected _canonicalizeHAURL(url?: string): string | undefined {
+  protected _canonicalizeHAURL(url?: string): string | null {
     if (this.hass && url && url.startsWith('/')) {
       return this.hass.hassUrl(url);
     }
-    return url;
+    return url ?? null;
   }
 
   /**
@@ -551,26 +449,21 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @param index The index of the slide to lazy load.
    * @param slide The slide to lazy load.
    */
-  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   protected _lazyloadSlide(index: number, slide: HTMLElement): void {
-    const childIndex: number | undefined = this._slideToChild[index];
-
-    if (
-      childIndex === undefined ||
-      !this.hass ||
-      !this.view ||
-      !this.view.target ||
-      !this.view.target.children ||
-      !isTrueMedia(this.view.target.children[childIndex])
-    ) {
+    if (!this.hass || !this.view || !this.view.query || !this.cameras) {
       return;
     }
 
-    resolveMedia(
-      this.hass,
-      this.view.target.children[childIndex],
-      this.resolvedMediaCache,
-    ).then((resolvedMedia) => {
+    const media = this.view.queryResults?.getResult(index);
+    const mediaContentID = media
+      ? media.getContentID(this.cameras.get(media.getCameraID()))
+      : null;
+    if (!mediaContentID) {
+      return;
+    }
+
+    resolveMedia(this.hass, mediaContentID, this.resolvedMediaCache).then(
+      (resolvedMedia) => {
         if (!resolvedMedia) {
           return;
         }
@@ -584,11 +477,12 @@ export class FrigateCardViewerCarousel extends LitElement {
         };
 
         if (img) {
-        img.src = this._canonicalizeHAURL(resolvedMedia.url) || '';
+          img.src = this._canonicalizeHAURL(resolvedMedia.url) ?? '';
         } else if (hls_player) {
-        hls_player.url = this._canonicalizeHAURL(resolvedMedia.url) || '';
+          hls_player.url = this._canonicalizeHAURL(resolvedMedia.url) ?? '';
         }
-    });
+      },
+    );
   }
 
   /**
@@ -596,21 +490,18 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @returns The slides to include in the render.
    */
   protected _getSlides(): TemplateResult[] {
-    if (
-      !this.view ||
-      !this.view.target ||
-      !this.view.target.children ||
-      !this.view.target.children.length
-    ) {
+    if (!this.view || !this.view.queryResults) {
       return [];
     }
 
     const slides: TemplateResult[] = [];
-    for (let i = 0; i < this.view.target.children?.length; ++i) {
-      const slide = this._renderMediaItem(this.view.target.children[i], slides.length);
-
+    for (let i = 0; i < this.view.queryResults.getResultsCount(); ++i) {
+      const media = this.view.queryResults.getResult(i);
+      if (media) {
+        const slide = this._renderMediaItem(media, i);
         if (slide) {
-        slides.push(slide);
+          slides[i] = slide;
+        }
       }
     }
     return slides;
@@ -620,8 +511,12 @@ export class FrigateCardViewerCarousel extends LitElement {
    * Determine if all the media in the carousel are resolved.
    */
   protected _isMediaFullyResolved(): boolean {
-    for (const child of this.view?.target?.children || []) {
-      if (!this.resolvedMediaCache?.has(child.media_content_id)) {
+    if (!this.resolvedMediaCache || !this.cameras) {
+      return false;
+    }
+    for (const media of this.view?.queryResults?.getResults() ?? []) {
+      const mediaContentID = media.getContentID(this.cameras.get(media.getCameraID()));
+      if (mediaContentID && !this.resolvedMediaCache.has(mediaContentID)) {
         return false;
       }
     }
@@ -633,29 +528,20 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @param changedProps The changed properties
    */
   protected willUpdate(changedProps: PropertyValues): void {
-    // Pre-populate a map between real media slides and view child indicies.
-    if (changedProps.has('view')) {
-      this._slideToChild = {};
-      let i = 0;
-      (this.view?.target?.children ?? []).forEach((child, index) => {
-        if (isTrueMedia(child) && ['video', 'image'].includes(child.media_content_type)) {
-          this._slideToChild[i++] = index;
-        }
-      })
-    }
-
     if (changedProps.has('viewerConfig')) {
       updateElementStyleFromMediaLayoutConfig(this, this.viewerConfig?.layout);
     }
     if (!this._carouselOptions || changedProps.has('viewerConfig')) {
-      this._carouselOptions = this._getOptions();
+      this._carouselOptions = {
+        draggable: this.viewerConfig?.draggable ?? true,
+      };
     }
     if (
       !this._carouselPlugins ||
       changedProps.has('viewerConfig') ||
       (changedProps.has('view') &&
-        this.view?.target?.children?.length !==
-          changedProps.get('view')?.target?.children?.length)
+        this.view?.queryResults?.getResultsCount() !==
+          changedProps.get('view')?.queryResults?.getResultsCount())
     ) {
       this._carouselPlugins = this._getPlugins();
     }
@@ -680,21 +566,20 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @returns A template to display to the user.
    */
   protected _render(): TemplateResult | void {
-    const slides = this._getSlides();
-
-    if (!slides.length || !this.view?.media) {
+    const media = this.view?.queryResults?.getSelectedResult();
+    if (!media || !this.cameras) {
       return;
     }
 
-    const neighbors = this._getMediaNeighbors();
-    const [prev, next] = [neighbors?.previous, neighbors?.next];
+    const [prev, next] = this._getMediaNeighbors();
 
     return html` <frigate-card-media-carousel
       ${ref(this._refMediaCarousel)}
       .carouselOptions=${this._carouselOptions}
       .carouselPlugins=${this._carouselPlugins}
-      .label="${this.view.media.title}"
+      .label=${media.getTitle() ?? undefined}
       .titlePopupConfig=${this.viewerConfig?.controls.title}
+      .selected=${this.view?.queryResults?.getSelectedIndex() ?? 0}
       transitionEffect=${this._getTransitionEffect()}
       @frigate-card:media-carousel:select=${this._setViewHandler.bind(this)}
       @frigate-card:media:loaded=${this._recordingSeekHandler.bind(this)}
@@ -704,22 +589,24 @@ export class FrigateCardViewerCarousel extends LitElement {
         .hass=${this.hass}
         .direction=${'previous'}
         .controlConfig=${this.viewerConfig?.controls.next_previous}
-        .thumbnail=${prev && prev.thumbnail ? prev.thumbnail : undefined}
-        .label=${prev ? prev.title : ''}
+        .thumbnail=${prev?.getThumbnail(this.cameras.get(prev.getCameraID())) ??
+        undefined}
+        .label=${prev?.getTitle() ?? ''}
         ?disabled=${!prev}
         @click=${(ev) => {
           this._refMediaCarousel.value?.frigateCardCarousel()?.carouselScrollPrevious();
           stopEventFromActivatingCardWideActions(ev);
         }}
       ></frigate-card-next-previous-control>
-      ${slides}
+      ${guard(this.view?.queryResults?.getResults(), () => this._getSlides())}
       <frigate-card-next-previous-control
         slot="next"
         .hass=${this.hass}
         .direction=${'next'}
         .controlConfig=${this.viewerConfig?.controls.next_previous}
-        .thumbnail=${next && next.thumbnail ? next.thumbnail : undefined}
-        .label=${next ? next.title : ''}
+        .thumbnail=${next?.getThumbnail(this.cameras.get(next.getCameraID())) ??
+        undefined}
+        .label=${next?.getTitle() ?? ''}
         ?disabled=${!next}
         @click=${(ev) => {
           this._refMediaCarousel.value?.frigateCardCarousel()?.carouselScrollNext();
@@ -733,10 +620,12 @@ export class FrigateCardViewerCarousel extends LitElement {
    * Fire a media show event when a slide is selected.
    */
   protected _recordingSeekHandler(): void {
-    const player = this._getPlayer();
-    const childIndex = this.view?.childIndex ?? null;
+    const selectedIndex = this.view?.queryResults?.getSelectedIndex() ?? null;
     const seek =
-      childIndex !== null ? this.view?.context?.mediaViewer?.seek.get(childIndex) : null;
+    selectedIndex !== null
+        ? this.view?.context?.mediaViewer?.seek.get(selectedIndex)
+        : null;
+    const player = this._getPlayer();
     if (player && seek) {
       player.seek(seek.seekSeconds);
     }
@@ -744,59 +633,53 @@ export class FrigateCardViewerCarousel extends LitElement {
 
   /**
    * Render a single media item in the viewer carousel.
-   * @param mediaToRender The FrigateBrowseMediaSource to render.
-   * @param slideIndex The index of the slide to render.
+   * @param media The ViewMedia to render.
+   * @param index The (slide|queryResult) index of the item to render.
    * @returns A rendered template.
    */
-  protected _renderMediaItem(
-    mediaToRender: FrigateBrowseMediaSource,
-    slideIndex: number,
-  ): TemplateResult | void {
+  protected _renderMediaItem(media: ViewMedia, index: number): TemplateResult | null {
     // Skip folders as they cannot be rendered by this viewer.
-    if (
-      !this.hass ||
-      !this.view ||
-      !this.viewerConfig ||
-      !isTrueMedia(mediaToRender) ||
-      !['video', 'image'].includes(mediaToRender.media_content_type)
-    ) {
-      return;
+    if (!this.hass || !this.view || !this.viewerConfig || !this.cameras) {
+      return null;
     }
 
     const lazyLoad = this.viewerConfig.lazy_load;
-    const resolvedMedia = this.resolvedMediaCache?.get(mediaToRender.media_content_id);
+    const mediaContentID = media.getContentID(this.cameras.get(media.getCameraID()));
+    const resolvedMedia = mediaContentID
+      ? this.resolvedMediaCache?.get(mediaContentID)
+      : null;
     if (!resolvedMedia && !lazyLoad) {
-      return;
+      return null;
     }
 
     // The media is attached to the player as '.media' which is used in
     // `_selectSlideMediaShowHandler` (and not used by the player itself).
     return html`
       <div class="embla__slide">
-        ${mediaToRender.media_content_type === 'video'
+        ${media.isVideo()
           ? html`<frigate-card-ha-hls-player
               allow-exoplayer
-              aria-label="${mediaToRender.title}"
+              aria-label="${media.getTitle() ?? ''}"
               ?autoplay=${false}
               controls
               muted
               playsinline
-              title="${mediaToRender.title}"
+              title="${media.getTitle() ?? ''}"
               url=${ifDefined(
-                lazyLoad ? undefined : this._canonicalizeHAURL(resolvedMedia?.url),
+                lazyLoad ? undefined : this._canonicalizeHAURL(resolvedMedia?.url) ?? '',
               )}
               .hass=${this.hass}
               @frigate-card:media:loaded=${(e: CustomEvent<MediaLoadedInfo>) => {
-                wrapMediaLoadedEventForCarousel(slideIndex, e);
+                wrapMediaLoadedEventForCarousel(index, e);
               }}
             >
             </frigate-card-ha-hls-player>`
           : html`<img
-              aria-label="${mediaToRender.title}"
+              aria-label="${media.getTitle() ?? ''}"
               src=${ifDefined(
-                lazyLoad ? IMG_EMPTY : this._canonicalizeHAURL(resolvedMedia?.url),
+                lazyLoad ? IMG_EMPTY : this._canonicalizeHAURL(resolvedMedia?.url) ?? '',
               )}
-              title="${mediaToRender.title}"
+              title="${media.getTitle() ?? ''}"
               @click=${() => {
                 if (
                   this._refMediaCarousel.value
@@ -804,7 +687,7 @@ export class FrigateCardViewerCarousel extends LitElement {
                     ?.carouselClickAllowed() &&
                   this.viewerConfig?.snapshot_click_plays_clip
                 ) {
-                  this._findRelatedClipView(mediaToRender).then((view) => {
+                  this._createRelatedClipView(index).then((view) => {
                     if (view) {
                       view.dispatchChangeEvent(this);
                     }
@@ -822,9 +705,9 @@ export class FrigateCardViewerCarousel extends LitElement {
                   // images in media-carousel.ts). Here we need to only call the
                   // media load handler on a 'real' load.
                   !lazyLoad ||
-                  lazyloadPlugin?.hasLazyloaded(slideIndex)
+                  lazyloadPlugin?.hasLazyloaded(index)
                 ) {
-                  wrapRawMediaLoadedEventForCarousel(slideIndex, e);
+                  wrapRawMediaLoadedEventForCarousel(index, e);
                 }
               }}"
             />`}

src/localize/languages/en.json

@@ -333,7 +333,6 @@
     "could_not_render_elements": "Could not render picture elements",
     "could_not_resolve": "Could not resolve media URL",
     "diagnostics": "Card diagnostics. Please review for confidential information prior to sharing",
-    "download_no_event_id": "Could not extract Frigate event id from media",
     "download_no_media": "No media to download",
     "download_sign_failed": "Could not sign media URL for download",
     "duplicate_camera_id": "Duplicate Frigate camera id for the following camera, use the 'id' parameter to uniquely identify cameras",

src/localize/languages/it.json

@@ -303,7 +303,6 @@
     "could_not_render_elements": "Impossibile renderizzare gli elementi dell'immagine",
     "could_not_resolve": "Impossibile risolvere l'URL dei media",
     "diagnostics": "Diagnostica delle carte.Si prega di rivedere per informazioni riservate prima di condividere",
-    "download_no_event_id": "Impossibile estrarre l'evento ID tramite media",
     "download_no_media": "Nessun media da scaricare",
     "download_sign_failed": "Impossibile firmare URL multimediale per il download",
     "duplicate_camera_id": "Duplicato ID dellla telecamera Frigate, utilizzare il parametro 'ID' per identificare in modo univoco le telecamere",

src/localize/languages/pt-BR.json

@@ -303,7 +303,6 @@
     "could_not_render_elements": "Não foi possível renderizar os elementos da imagem",
     "could_not_resolve": "Não foi possível resolver o URL de mídia",
     "diagnostics": "Diagnósticos do cartão. Revise as informações confidenciais antes de compartilhar",
-    "download_no_event_id": "Não foi possível extrair o Frigate ID do evento da mídia",
     "download_no_media": "Nenhuma mídia para download",
     "download_sign_failed": "Não foi possível assinar o URL de mídia para download",
     "duplicate_camera_id": "Duplique o ID da câmera Frigate para a câmera a seguir, use o parâmetro 'id' para identificar exclusivamente as câmeras",

src/types.ts

@@ -27,6 +27,7 @@ export const THUMBNAIL_WIDTH_MIN = 75;
  */
 
 export type ClipsOrSnapshots = 'clips' | 'snapshots';
+export type ClipsOrSnapshotsOrAll = 'clips' | 'snapshots' | 'all';
 
 export const FRIGATE_CARD_VIEWS_USER_SPECIFIED = [
   'live',
@@ -661,13 +662,30 @@ export type ImageViewConfig = z.infer<typeof imageConfigSchema>;
 /**
  * Thumbnail controls configuration section.
  */
+const thumbnailControlsDefaults = {
+  mode: 'right' as const,
+  size: 100,
+  show_details: true,
+  show_favorite_control: true,
+  show_timeline_control: true,
+};
 
 const thumbnailsControlSchema = z.object({
-  mode: z.enum(['none', 'above', 'below', 'left', 'right']),
-  size: z.number().min(THUMBNAIL_WIDTH_MIN).max(THUMBNAIL_WIDTH_MAX).optional(),
-  show_details: z.boolean().optional(),
-  show_favorite_control: z.boolean().optional(),
-  show_timeline_control: z.boolean().optional(),
+  mode: z
+    .enum(['none', 'above', 'below', 'left', 'right'])
+    .default(thumbnailControlsDefaults.mode),
+  size: z
+    .number()
+    .min(THUMBNAIL_WIDTH_MIN)
+    .max(THUMBNAIL_WIDTH_MAX)
+    .default(thumbnailControlsDefaults.size),
+  show_details: z.boolean().default(thumbnailControlsDefaults.show_details),
+  show_favorite_control: z
+    .boolean()
+    .default(thumbnailControlsDefaults.show_favorite_control),
+  show_timeline_control: z
+    .boolean()
+    .default(thumbnailControlsDefaults.show_timeline_control),
 });
 export type ThumbnailsControlConfig = z.infer<typeof thumbnailsControlSchema>;
 
@@ -752,6 +770,11 @@ const liveImageConfigDefault = {
   refresh_seconds: 1,
 };
 
+const liveThumbnailControlsDefaults = {
+  ...thumbnailControlsDefaults,
+  media: 'clips' as const,
+};
+
 const liveConfigDefault = {
   auto_play: 'all' as const,
   auto_pause: 'never' as const,
@@ -769,14 +792,7 @@ const liveConfigDefault = {
       size: 48,
       style: 'chevrons' as const,
     },
-    thumbnails: {
-      media: 'clips' as const,
-      size: 100,
-      show_details: true,
-      show_favorite_control: true,
-      show_timeline_control: true,
-      mode: 'left' as const,
-    },
+    thumbnails: liveThumbnailControlsDefaults,
     timeline: miniTimelineConfigDefault,
     title: {
       mode: 'popup-bottom-right' as const,
@@ -785,6 +801,12 @@ const liveConfigDefault = {
   },
 };
 
+const livethumbnailsControlSchema = thumbnailsControlSchema.extend({
+  media: z
+    .enum(['clips', 'snapshots'])
+    .default(liveConfigDefault.controls.thumbnails.media),
+});
+
 const liveImageConfigSchema = z.object({
   refresh_seconds: z.number().min(0).default(liveConfigDefault.image.refresh_seconds),
 });
@@ -834,30 +856,9 @@ const liveOverridableConfigSchema = z
             ),
           })
           .default(liveConfigDefault.controls.next_previous),
-        thumbnails: thumbnailsControlSchema
-          .extend({
-            mode: thumbnailsControlSchema.shape.mode.default(
-              liveConfigDefault.controls.thumbnails.mode,
+        thumbnails: livethumbnailsControlSchema.default(
+          liveConfigDefault.controls.thumbnails,
         ),
-            size: thumbnailsControlSchema.shape.size.default(
-              liveConfigDefault.controls.thumbnails.size,
-            ),
-            show_details: thumbnailsControlSchema.shape.show_details.default(
-              liveConfigDefault.controls.thumbnails.show_details,
-            ),
-            show_favorite_control:
-              thumbnailsControlSchema.shape.show_favorite_control.default(
-                liveConfigDefault.controls.thumbnails.show_favorite_control,
-              ),
-            show_timeline_control:
-              thumbnailsControlSchema.shape.show_timeline_control.default(
-                liveConfigDefault.controls.thumbnails.show_timeline_control,
-              ),
-            media: z
-              .enum(['clips', 'snapshots'])
-              .default(liveConfigDefault.controls.thumbnails.media),
-          })
-          .default(liveConfigDefault.controls.thumbnails),
         timeline: miniTimelineConfigSchema.default(liveConfigDefault.controls.timeline),
         title: titleControlConfigSchema
           .extend({
@@ -994,13 +995,7 @@ const viewerConfigDefault = {
       size: 48,
       style: 'thumbnails' as const,
     },
-    thumbnails: {
-      size: 100,
-      show_details: true,
-      show_favorite_control: true,
-      show_timeline_control: true,
-      mode: 'left' as const,
-    },
+    thumbnails: thumbnailControlsDefaults,
     timeline: miniTimelineConfigDefault,
     title: {
       mode: 'popup-bottom-right' as const,
@@ -1047,27 +1042,9 @@ const viewerConfigSchema = z
         next_previous: viewerNextPreviousControlConfigSchema.default(
           viewerConfigDefault.controls.next_previous,
         ),
-        thumbnails: thumbnailsControlSchema
-          .extend({
-            mode: thumbnailsControlSchema.shape.mode.default(
-              viewerConfigDefault.controls.thumbnails.mode,
+        thumbnails: thumbnailsControlSchema.default(
+          viewerConfigDefault.controls.thumbnails,
         ),
-            size: thumbnailsControlSchema.shape.size.default(
-              viewerConfigDefault.controls.thumbnails.size,
-            ),
-            show_details: thumbnailsControlSchema.shape.show_details.default(
-              viewerConfigDefault.controls.thumbnails.show_details,
-            ),
-            show_favorite_control:
-              thumbnailsControlSchema.shape.show_favorite_control.default(
-                viewerConfigDefault.controls.thumbnails.show_favorite_control,
-              ),
-            show_timeline_control:
-              thumbnailsControlSchema.shape.show_timeline_control.default(
-                viewerConfigDefault.controls.thumbnails.show_timeline_control,
-              ),
-          })
-          .default(viewerConfigDefault.controls.thumbnails),
         timeline: miniTimelineConfigSchema.default(
           viewerConfigDefault.controls.timeline,
         ),
@@ -1364,14 +1341,6 @@ export interface BrowseRecordingQueryParameters {
   hour: number;
 }
 
-export interface BrowseMediaNeighbors {
-  previous: FrigateBrowseMediaSource | null;
-  previousIndex: number | null;
-
-  next: FrigateBrowseMediaSource | null;
-  nextIndex: number | null;
-}
-
 export interface MediaLoadedInfo {
   width: number;
   height: number;
@@ -1434,7 +1403,7 @@ export const MEDIA_TYPE_VIDEO = 'video' as const;
 // See: https://github.com/colinhacks/zod#recursive-types
 //
 // Server side data-type defined here: https://github.com/home-assistant/core/blob/dev/homeassistant/components/media_player/browse_media.py#L46
-interface BrowseMediaSource {
+export interface BrowseMediaSource {
   title: string;
   media_class: string;
   media_content_type: string;

src/utils/basic.ts

@@ -1,7 +1,12 @@
+import differenceInHours from 'date-fns/differenceInHours';
+import differenceInMinutes from 'date-fns/differenceInMinutes';
+import differenceInSeconds from 'date-fns/differenceInSeconds';
 import format from 'date-fns/format';
 import isEqual from 'lodash-es/isEqual';
 import { FrigateCardError } from '../types';
 
+export type ModifyInterface<T, R> = Omit<T, keyof R> & R;
+
 /**
  * Dispatch a Frigate Card event.
  * @param element The element to send the event.
@@ -51,6 +56,24 @@ export function arrayMove(target: unknown[], from: number, to: number): void {
   target.splice(to, 0, element);
 }
 
+/**
+ * Convert a value to an array if it is not already one.
+ * @param value: A value (which may be an array).
+ * @returns An array.
+ */
+export const arrayify = <T>(value: T | T[]): T[] => {
+  return Array.isArray(value) ? value : [value];
+};
+
+/**
+ * Convert a value to an set if it is not already one.
+ * @param value: A value (which may be a set, an array or a T)
+ * @returns A set of T.
+ */
+export const setify = <T>(value: T | T[] | Set<T>): Set<T> => {
+  return value instanceof Set ? value : new Set(arrayify(value));
+};
+
 /**
  * Determine if the contents of the n(ew) and o(ld) values have changed. For use
  * in lit web components that may have a value that changes address but not
@@ -68,10 +91,7 @@ export function contentsChanged(n: unknown, o: unknown): boolean {
  * @param e The Error object.
  * @param func The Console func to call.
  */
-export function errorToConsole(e: Error, func?: CallableFunction): void {
-  if (!func) {
-    func = console.warn;
-  }
+export function errorToConsole(e: Error, func: CallableFunction = console.warn): void {
   if (e instanceof FrigateCardError && e.context) {
     func(e, e.context);
   } else {
@@ -83,9 +103,8 @@ export function errorToConsole(e: Error, func?: CallableFunction): void {
  * Determine if the device supports hovering.
  * @returns `true` if the device supports hovering, `false` otherwise.
  */
-export const isHoverableDevice = (): boolean => window.matchMedia(
-  '(hover: hover) and (pointer: fine)',
-).matches;
+export const isHoverableDevice = (): boolean =>
+  window.matchMedia('(hover: hover) and (pointer: fine)').matches;
 
 /**
  * Format a date object to RFC3339.
@@ -94,7 +113,7 @@ export const isHoverableDevice = (): boolean => window.matchMedia(
  */
 export const formatDateAndTime = (date: Date): string => {
   return format(date, 'yyyy-MM-dd HH:mm');
-}
+};
 
 /**
  * Run a function in idle periods. If idle callbacks are not supported (e.g.
@@ -105,9 +124,34 @@ export const formatDateAndTime = (date: Date): string => {
 export const runWhenIdleIfSupported = (func: () => void, timeout?: number): void => {
   if (window.requestIdleCallback) {
     window.requestIdleCallback(func, {
-      ...(timeout && { timeout: timeout})
+      ...(timeout && { timeout: timeout }),
     });
   } else {
     func();
   }
+};
+
+/**
+ * Convenience function to return a string representing the difference in hours,
+ * minutes and seconds between two dates. Heavily inspired by, and returning the
+ * same format as, the Frigate UI:
+ * https://github.com/blakeblackshear/frigate/blob/master/web/src/components/RecordingPlaylist.jsx#L97
+ * @param start The start date.
+ * @param end The end date.
+ * @returns A duration string.
+ */
+export function getDurationString(start: Date, end: Date): string {
+  const hours = differenceInHours(end, start);
+  const minutes = differenceInMinutes(end, start) - hours * 60;
+  const seconds = differenceInSeconds(end, start) - hours * 60 * 60 - minutes * 60;
+  let duration = '';
+
+  if (hours) {
+    duration += `${hours}h `;
+  }
+  if (minutes) {
+    duration += `${minutes}m `;
+  }
+  duration += `${seconds}s`;
+  return duration;
 }

src/utils/camera.ts

@@ -81,13 +81,13 @@ export function getCameraIcon(
  */
 export const getAllDependentCameras = (
   cameras: Map<string, CameraConfig>,
-  camera?: string,
+  cameraID?: string,
 ): Set<string> => {
   const cameraIDs: Set<string> = new Set();
-  const getDependentCameras = (camera: string): void => {
-    const cameraConfig = cameras.get(camera);
+  const getDependentCameras = (cameraID: string): void => {
+    const cameraConfig = cameras.get(cameraID);
     if (cameraConfig) {
-      cameraIDs.add(camera);
+      cameraIDs.add(cameraID);
       const dependentCameras: Set<string> = new Set();
       (cameraConfig.dependencies.cameras || []).forEach((item) =>
         dependentCameras.add(item),
@@ -102,39 +102,8 @@ export const getAllDependentCameras = (
       }
     }
   };
-  if (camera) {
-    getDependentCameras(camera);
+  if (cameraID) {
+    getDependentCameras(cameraID);
   }
   return cameraIDs;
 };
-
-/**
- * Return the cameraIDs of truly unique cameras (some configured cameras may be
- * the same Frigate came but with different zone/labels).
- * @param cameras The full set of cameras.
- * @param cameraIDs The specific IDs to dedup.
- */
-export const getTrueCameras = (
-  cameras: Map<string, CameraConfig>,
-  cameraIDs: Set<string>,
-): Set<string> => {
-  const getTrueCameraID = (cameraConfig: CameraConfig): string => {
-    return `${cameraConfig.frigate?.client_id ?? ''}/${
-      cameraConfig.frigate.camera_name ?? ''
-    }`;
-  };
-
-  const output = new Set<string>();
-  const visitedTrueCameras = new Set<string>();
-  cameraIDs.forEach((cameraID: string) => {
-    const cameraConfig = cameras.get(cameraID) ?? null;
-    if (cameraConfig && cameraConfig.frigate.camera_name) {
-      const trueCameraID = getTrueCameraID(cameraConfig);
-      if (!visitedTrueCameras.has(trueCameraID)) {
-        output.add(cameraID);
-        visitedTrueCameras.add(trueCameraID);
-      }
-    }
-  });
-  return output;
-};

src/utils/data-manager.ts

@@ -1,540 +0,0 @@
-import { HomeAssistant } from 'custom-card-helpers';
-import { DataSet, DataView } from 'vis-data/esnext';
-import type { IdType, TimelineItem } from 'vis-timeline/esnext';
-import { CAMERA_BIRDSEYE } from '../const.js';
-import {
-  CameraConfig,
-  ExtendedHomeAssistant,
-  FrigateCardError,
-  FrigateEvent,
-  FrigateEvents,
-} from '../types.js';
-import { errorToConsole, runWhenIdleIfSupported } from './basic.js';
-import {
-  FrigateGetEventsParameters,
-  getEventsMultiple,
-  getRecordingSegments,
-  getRecordingsSummary,
-  RecordingSegments,
-  RecordingSummary,
-} from './frigate.js';
-import { dispatchFrigateCardErrorEvent } from '../components/message.js';
-import fromUnixTime from 'date-fns/fromUnixTime';
-import throttle from 'lodash-es/throttle';
-
-const RECORDING_SEGMENT_TOLERANCE = 60;
-const DATA_MANAGER_MAX_AGE_SECONDS = 10;
-const DATA_MANAGER_MAX_FETCH_COUNT = 10000;
-
-export interface FrigateCardTimelineItem extends TimelineItem {
-  // DataView has issues using datasets with Date objects, so avoid them and use
-  // numbers instead.
-  start: number;
-  end?: number;
-  event?: FrigateEvent;
-}
-
-type TimelineMediaType = 'all' | 'clips' | 'snapshots';
-
-export interface RecordingSegmentsItem {
-  id: string;
-  cameraID: string;
-  start: number;
-  end: number;
-}
-
-/**
- * Sort the timeline items most recent to least recent.
- * @param a The first item.
- * @param b The second item.
- * @returns -1, 0, 1 (standard array sort function configuration).
- */
-export const sortYoungestToOldest = (
-  a: RecordingSegmentsItem | FrigateCardTimelineItem,
-  b: RecordingSegmentsItem | FrigateCardTimelineItem,
-): number => {
-  if (a.start < b.start) {
-    return 1;
-  }
-  if (a.start > b.start) {
-    return -1;
-  }
-  return 0;
-};
-
-/**
- * Sort the segments least recent to most recent.
- * @param a The first item.
- * @param b The second item.
- * @returns -1, 0, 1 (standard array sort function configuration).
- */
-export const sortOldestToYoungest = (
-  a: RecordingSegmentsItem | FrigateCardTimelineItem,
-  b: RecordingSegmentsItem | FrigateCardTimelineItem,
-): number => {
-  if (a.start < b.start) {
-    return -1;
-  }
-  if (a.start > b.start) {
-    return 1;
-  }
-  return 0;
-};
-
-/**
- * A manager to maintain/fetch timeline events.
- */
-export class DataManager {
-  protected _recordingSummary: Map<string, RecordingSummary | null> = new Map();
-  protected _recordingSegments = new DataSet<RecordingSegmentsItem>();
-
-  protected _dataset = new DataSet<FrigateCardTimelineItem>();
-
-  // The earliest date managed.
-  protected _dateStart: Date | null = null;
-
-  // The latest date managed.
-  protected _dateEnd: Date | null = null;
-
-  // The last fetch date.
-  protected _dateFetch: Date | null = null;
-
-  // The maximum allowable age of fetch data (will not fetch more frequently
-  // than this).
-  protected _maxAgeSeconds: number = DATA_MANAGER_MAX_AGE_SECONDS;
-
-  protected _cameras: Map<string, CameraConfig>;
-
-  // Garbage collect segments at most once an hour.
-  protected _throttledSegmentGarbageCollector = throttle(
-    () => {
-      runWhenIdleIfSupported(this._garbageCollectSegments.bind(this));
-    },
-    60 * 60 * 1000,
-    { trailing: true },
-  );
-
-  constructor(cameras: Map<string, CameraConfig>) {
-    this._cameras = cameras;
-  }
-
-  // Get the last event fetch date.
-  get lastFetchDate(): Date | null {
-    return this._dateFetch ?? null;
-  }
-
-  public getRecordingSummaryForCamera(cameraID: string): RecordingSummary | null {
-    return this._recordingSummary.get(cameraID) ?? null;
-  }
-
-  /**
-   * Create a dataview for a given set of camera.
-   * @param cameraIDs The cameraIDs to include.
-   * @param showRecordings Whether or not to show recordings.
-   * @returns A dataview.
-   */
-  public createDataView(
-    cameraIDs: Set<string>,
-    showRecordings: boolean,
-    mediaType: TimelineMediaType,
-  ): DataView<FrigateCardTimelineItem> {
-    return new DataView(this._dataset, {
-      filter: (item: FrigateCardTimelineItem) =>
-        // Only return items for the given cameras.
-        !!item.group &&
-        cameraIDs.has(String(item.group)) &&
-        // Don't return recordings if the user does not want them.
-        (showRecordings || item.type !== 'background') &&
-        // Don't return events that are the wrong media type.
-        (item.type === 'background' ||
-          mediaType === 'all' ||
-          (mediaType === 'clips' && !!item.event?.has_clip) ||
-          (mediaType === 'snapshots' && !!item.event?.has_snapshot)),
-    });
-  }
-
-  /**
-   * Create a dataview for segments.
-   * @returns A dataview.
-   */
-  public createSegmentDataView(): DataView<RecordingSegmentsItem> {
-    return new DataView(this._recordingSegments);
-  }
-
-  /**
-   * Get the underlying recording segments dataset.
-   */
-  get recordingSegments(): DataSet<RecordingSegmentsItem> {
-    return this._recordingSegments;
-  }
-
-  /**
-   * Rewrite an item as-is. May be useful in cases where clustering may need to
-   * be recalculated.
-   * @param id The id to rewrite.
-   */
-  public rewriteItem(id: IdType): void {
-    // Hack: Clustering may not update unless the dataset changes, artifically
-    // update the dataset to ensure the newly selected item cannot be included
-    // in a cluster.
-    const item = this._dataset.get(id);
-    if (item) {
-      this._dataset.updateOnly(item);
-    }
-  }
-
-  /**
-   * Add events for the given camera.
-   * @param cameraID The camera ID.
-   * @param events The array of events.
-   */
-  protected _addEvents(cameraID: string, events: FrigateEvents): void {
-    this._dataset.update(
-      events.map((event) => ({
-        id: event.id,
-        group: cameraID,
-        content: '',
-        event: event,
-        start: event.start_time * 1000,
-        type: event.end_time ? 'range' : 'point',
-        ...(event.end_time && { end: event.end_time * 1000 }),
-      })),
-    );
-  }
-
-  /**
-   * Determine if the timeline has coverage for a given range of dates.
-   * @param start The start of the date range.
-   * @param end An optional end of the date range.
-   * @returns
-   */
-  public hasCoverage(now: Date, start: Date, end?: Date): boolean {
-    // Never fetched: no coverage.
-    if (!this._dateFetch || !this._dateStart || !this._dateEnd) {
-      return false;
-    }
-
-    // If the most recent fetch is older than maxAgeSeconds: no coverage.
-    if (
-      this._maxAgeSeconds &&
-      now.getTime() - this._dateFetch.getTime() > this._maxAgeSeconds * 1000
-    ) {
-      return false;
-    }
-
-    // If the most requested data is earlier than the earliest stored: no
-    // coverage.
-    if (start < this._dateStart) {
-      return false;
-    }
-
-    // If there's no end time specified: there IS coverage.
-    if (!end) {
-      return true;
-    }
-    // If the requested end time is older than the oldest requested: there IS
-    // coverage.
-    if (end.getTime() < this._dateEnd.getTime()) {
-      return true;
-    }
-    // If there's no maxAgeSeconds specified: no coverage.
-    if (!this._maxAgeSeconds) {
-      return false;
-    }
-    // If the requested end time is beyond `_maxAgeSeconds` of now: no coverage.
-    if (now.getTime() - end.getTime() > this._maxAgeSeconds * 1000) {
-      return false;
-    }
-
-    // End time is within `_maxAgeSeconds` of the latest data: there IS
-    // coverage.
-    return end.getTime() - this._maxAgeSeconds * 1000 <= this._dateEnd.getTime();
-  }
-
-  /**
-   * Fetch events if no coverage in given range.
-   * @param element The element to send error events from.
-   * @param hass The HomeAssistant object.
-   * @param start Fetch events that start later than this date.
-   * @param end Fetch events that start earlier than this date.
-   * @returns `true` if events were fetched, `false` otherwise.
-   */
-  public async fetchIfNecessary(
-    element: HTMLElement,
-    hass: ExtendedHomeAssistant,
-    start: Date,
-    end: Date,
-  ): Promise<boolean> {
-    // Cannot fetch the future, always clip the end date to now so as to avoid
-    // checking for coverage that could not possibly exist yet.
-    const now = new Date();
-    end = end > now ? now : end;
-
-    if (this.hasCoverage(now, start, end)) {
-      return false;
-    }
-
-    const oldStart = this._dateStart;
-    const oldEnd = this._dateEnd;
-    let segmentStart: Date | null = null;
-    let segmentEnd: Date | null = null;
-    if (!this._dateStart || start < this._dateStart) {
-      this._dateStart = start;
-      segmentStart = start;
-    } else {
-      segmentStart = oldEnd ?? end;
-    }
-    if (!this._dateEnd || end > this._dateEnd) {
-      this._dateEnd = end;
-      segmentEnd = end;
-    } else {
-      segmentEnd = oldStart ?? start;
-    }
-
-    this._dateFetch = new Date();
-
-    await Promise.all([
-      // Events are always fetched for the maximum extent of the managed
-      // range. This is because events may change at any point in time
-      // (e.g. a long-running event that ends).
-      this._fetchEvents(element, hass, this._dateStart, this._dateEnd),
-      this._fetchRecordingSummary(hass),
-      ...(segmentEnd > segmentStart
-        ? [this._fetchRecordingSegments(hass, segmentStart, segmentEnd)]
-        : []),
-    ]);
-
-    this._throttledSegmentGarbageCollector();
-    return true;
-  }
-
-  /**
-   * Garbage collect recording segments that no longer feature in the summary.
-   */
-  protected _garbageCollectSegments(): void {
-    if (!this._recordingSegments || !this._recordingSummary) {
-      return;
-    }
-
-    // Performance: _recordingSegments is potentially very large (e.g. 10K - 1M
-    // items) and each item must be examined, so care required here to stick to
-    // nothing worse than O(n) performance.
-    const getHourID = (cameraID: string, day: number, hour: number): string => {
-      return `${cameraID}/${day}/${hour}`;
-    };
-
-    const goodHours: Set<string> = new Set();
-    for (const cameraID of this._recordingSummary.keys()) {
-      for (const summaryDay of this._recordingSummary?.get(cameraID) ?? []) {
-        for (const summaryHour of summaryDay.hours) {
-          goodHours.add(getHourID(cameraID, summaryDay.day.getDate(), summaryHour.hour));
-        }
-      }
-    }
-
-    const deleteIDs: string[] = [];
-    this._recordingSegments.forEach((item, id) => {
-      const startDate = fromUnixTime(item.start / 1000);
-      const hourID = getHourID(item.cameraID, startDate.getDate(), startDate.getHours());
-
-      // ~O(1) lookup time for a JS set.
-      if (!goodHours.has(hourID)) {
-        deleteIDs.push(String(id));
-      }
-    });
-
-    this._recordingSegments.remove(deleteIDs);
-    this._compressRecordingSegmentsOntoTimeline();
-  }
-
-  /**
-   * Fetch recording segments for cameras.
-   * @param hass The HomeAssistant object.
-   * @param start Fetch segments that start later than this date.
-   * @param end Fetch segments that start earlier than this date.
-   */
-  protected async _fetchRecordingSegments(
-    hass: ExtendedHomeAssistant,
-    start: Date,
-    end: Date,
-  ): Promise<void> {
-    const results: Map<string, RecordingSegments> = new Map();
-    const fetch = async (camera: string, config?: CameraConfig): Promise<void> => {
-      if (!config || !config.frigate.camera_name || !hass) {
-        return;
-      }
-
-      try {
-        const cameraResults = await getRecordingSegments(
-          hass,
-          config.frigate.client_id,
-          config.frigate.camera_name,
-          end,
-          start,
-        );
-        results.set(camera, cameraResults);
-      } catch (e) {
-        errorToConsole(e as Error);
-      }
-    };
-
-    await Promise.all(
-      Array.from(this._cameras.keys()).map((camera) =>
-        fetch(camera, this._cameras.get(camera)),
-      ),
-    );
-
-    const items: RecordingSegmentsItem[] = [];
-    results.forEach((segments, cameraID) => {
-      segments.forEach((segment) => {
-        items.push({
-          id: `${cameraID}/${segment.id}`,
-          cameraID: cameraID,
-          start: segment.start_time * 1000,
-          end: segment.end_time * 1000,
-        });
-      });
-    });
-    this._recordingSegments.update(items);
-    this._compressRecordingSegmentsOntoTimeline();
-  }
-
-  /**
-   * Compress recording segments into recordings shown on the timeline
-   * background.
-   */
-  protected _compressRecordingSegmentsOntoTimeline(): void {
-    if (!this._recordingSegments.length) {
-      return;
-    }
-
-    // Delete all the existing background.
-    this._dataset.remove(
-      this._dataset.get({
-        filter: (item) => item.type === 'background',
-      }),
-    );
-
-    const convertToRecording = (
-      segment: RecordingSegmentsItem,
-    ): FrigateCardTimelineItem => {
-      return {
-        id: `recording-${segment.cameraID}-${segment.id}`,
-        group: segment.cameraID,
-        start: segment.start,
-        end: segment.end,
-        content: ' ',
-        type: 'background',
-      };
-    };
-
-    // Iterate through the segments least to most recent, effectively joining
-    // segments together that are within a certain tolerance to create large
-    // blocks that are visualized on the timeline as recordings.
-    const recordings: FrigateCardTimelineItem[] = [];
-
-    this._cameras.forEach((_, cameraID) => {
-      const segments = this._recordingSegments.get({
-        filter: (item) => item.cameraID === cameraID,
-        order: sortOldestToYoungest,
-      });
-      let current: RecordingSegmentsItem | null = null;
-      for (let i = 0; i < segments.length; ++i) {
-        const item = segments[i];
-
-        if (!current) {
-          current = { ...item };
-        } else if (current.end + RECORDING_SEGMENT_TOLERANCE * 1000 >= item.start) {
-          current.end = item.end;
-        } else {
-          recordings.push(convertToRecording(current));
-          current = null;
-        }
-        if (i === segments.length - 1 && current) {
-          recordings.push(convertToRecording(current));
-        }
-      }
-    });
-
-    this._dataset.update(recordings);
-  }
-
-  /**
-   * Fetch recording summary.
-   * @param hass The HomeAssistant object.
-   */
-  protected async _fetchRecordingSummary(hass: ExtendedHomeAssistant): Promise<void> {
-    const storeRecordingSummary = async (
-      cameraID: string,
-      cameraConfig: CameraConfig,
-    ): Promise<void> => {
-      if (!cameraConfig.frigate.camera_name) {
-        return;
-      }
-      try {
-        this._recordingSummary.set(
-          cameraID,
-          await getRecordingsSummary(
-            hass,
-            cameraConfig.frigate.client_id,
-            cameraConfig.frigate.camera_name,
-          ),
-        );
-      } catch (e) {
-        // Recording failure should not disrupt the rest of the timeline
-        // experience.
-        errorToConsole(e as Error);
-      }
-    };
-
-    await Promise.all(
-      Array.from(this._cameras.keys()).map(async (cameraID) => {
-        const cameraConfig = this._cameras.get(cameraID);
-        if (cameraConfig) {
-          await storeRecordingSummary(cameraID, cameraConfig);
-        }
-      }),
-    );
-  }
-
-  /**
-   * Fetch events for the timeline.
-   * @param element The element to send error events from.
-   * @param hass The HomeAssistant object.
-   * @param start Fetch events that start later than this date.
-   * @param end Fetch events that start earlier than this date.
-   */
-  protected async _fetchEvents(
-    element: HTMLElement,
-    hass: HomeAssistant,
-    start: Date,
-    end: Date,
-  ): Promise<void> {
-    const params: Map<string, FrigateGetEventsParameters> = new Map();
-
-    this._cameras.forEach((cameraConfig, cameraID) => {
-      if (
-        cameraConfig.frigate.camera_name &&
-        cameraConfig.frigate.camera_name !== CAMERA_BIRDSEYE
-      ) {
-        params.set(cameraID, {
-          instance_id: cameraConfig.frigate.client_id,
-          camera: cameraConfig.frigate.camera_name,
-          ...(cameraConfig.frigate.label && { label: cameraConfig.frigate.label }),
-          ...(cameraConfig.frigate.zone && { label: cameraConfig.frigate.zone }),
-          before: Math.floor(end.getTime() / 1000),
-          after: Math.floor(start.getTime() / 1000),
-          limit: DATA_MANAGER_MAX_FETCH_COUNT,
-        });
-      }
-    });
-
-    let results: Map<string, FrigateEvents>;
-    try {
-      results = await getEventsMultiple(hass, params);
-    } catch (e) {
-      return dispatchFrigateCardErrorEvent(element, e as FrigateCardError);
-    }
-    results.forEach((params, cameraID) => this._addEvents(cameraID, params));
-  }
-}

src/utils/data/data-manager-cache.ts

@@ -0,0 +1,135 @@
+import isEqual from 'lodash-es/isEqual';
+import orderBy from 'lodash-es/orderBy';
+import sortedUniqBy from 'lodash-es/sortedUniqBy';
+import { RecordingSegment, RecordingSegments } from '../frigate';
+import { DateRange, MemoryRangeSet } from './data-manager-range';
+import { DataQuery, QueryResults } from './data-types';
+
+interface RequestCacheItem<Request, Response> {
+  request: Request;
+  response: Response;
+  expires?: Date;
+}
+
+interface DataManagerCache<Request, Response> {
+  get(request: Request): Response | null;
+  has(request: Request): boolean;
+  set(request: Request, response: Response, expiry?: Date): void;
+}
+
+export class MemoryRequestCache<Request, Response>
+  implements DataManagerCache<Request, Response>
+{
+  protected _data: RequestCacheItem<Request, Response>[] = [];
+
+  public get(request: Request): Response | null {
+    const now = this._now();
+    for (const item of this._data) {
+      if (
+        (!item.expires || now <= item.expires) &&
+        this._contains(request, item.request)
+      ) {
+        return item.response;
+      }
+    }
+    return null;
+  }
+
+  public has(request: Request): boolean {
+    return !!this.get(request);
+  }
+
+  public set(request: Request, response: Response, expiry?: Date): void {
+    this._data.push({
+      request: request,
+      response: response,
+      expires: expiry,
+    });
+
+    // Clean up old requests on set.
+    this._expireOldRequests();
+  }
+
+  protected _now(): Date {
+    return new Date();
+  }
+
+  protected _contains(a: Request, b: Request): boolean {
+    return isEqual(a, b);
+  }
+
+  protected _expireOldRequests(): void {
+    const now = this._now();
+    this._data = this._data.filter((item) => !item.expires || now < item.expires);
+  }
+}
+
+export class RequestCache extends MemoryRequestCache<DataQuery, QueryResults> {}
+
+export class MemoryRangedCache<Data> {
+  protected _ranges: MemoryRangeSet = new MemoryRangeSet();
+  protected _data: Data[] = [];
+  protected _timeFunc: (data: Data) => number;
+  protected _idFunc: (data: Data) => string;
+
+  constructor(timeFunc: (data: Data) => number, idFunc: (data: Data) => string) {
+    this._timeFunc = timeFunc;
+    this._idFunc = idFunc;
+  }
+
+  public add(range: DateRange, data: Data[]) {
+    this._ranges.add(range);
+    this._data = sortedUniqBy(
+      orderBy(this._data.concat(data), this._timeFunc, 'asc'),
+      this._idFunc,
+    );
+  }
+
+  public hasCoverage(range: DateRange): boolean {
+    return this._ranges.hasCoverage(range);
+  }
+
+  public get(range: DateRange): Data[] | null {
+    if (!this.hasCoverage(range)) {
+      return null;
+    }
+
+    const output: Data[] = [];
+    for (const data of this._data) {
+      const start = this._timeFunc(data);
+      if (start > range.start.getTime()) {
+        if (start > range.end.getTime()) {
+          // Data is kept in order.
+          break;
+        }
+        output.push(data);
+      }
+    }
+    return output;
+  }
+}
+
+export class RecordingSegmentsCache {
+  protected _segments: Map<string, MemoryRangedCache<RecordingSegment>> = new Map();
+
+  public add(cameraID: string, range: DateRange, segments: RecordingSegments) {
+    let cameraSegmentCache: MemoryRangedCache<RecordingSegment> | undefined =
+      this._segments.get(cameraID);
+    if (!cameraSegmentCache) {
+      cameraSegmentCache = new MemoryRangedCache(
+        (segment: RecordingSegment) => segment.start_time * 1000,
+        (segment: RecordingSegment) => segment.id,
+      );
+      this._segments.set(cameraID, cameraSegmentCache);
+    }
+    cameraSegmentCache.add(range, segments);
+  }
+
+  public hasCoverage(cameraID: string, range: DateRange): boolean {
+    return !!this._segments.get(cameraID)?.hasCoverage(range);
+  }
+
+  public get(cameraID: string, range: DateRange): RecordingSegments | null {
+    return this._segments.get(cameraID)?.get(range) ?? null;
+  }
+}

src/utils/data/data-manager-engine-factory.ts

@@ -0,0 +1,42 @@
+import { CameraConfig } from '../../types';
+import { RecordingSegmentsCache } from './data-manager-cache';
+import { DataManagerEngine } from './data-manager-engine';
+import { FrigateDataManagerEngine } from './data-manager-engine-frigate';
+import { DataQuery } from './data-types';
+
+export class DataManagerEngineFactory {
+  protected _engines: Map<string, DataManagerEngine> = new Map();
+
+  protected _getOrCreateEngine(engineKey: string): DataManagerEngine | null {
+    const cachedEngine = this._engines.get(engineKey);
+    if (cachedEngine) {
+      return cachedEngine;
+    }
+    let newEngine: DataManagerEngine | null = null;
+    switch (engineKey) {
+      case 'frigate':
+        newEngine = new FrigateDataManagerEngine(new RecordingSegmentsCache());
+        break;
+    }
+    if (newEngine) {
+      this._engines.set(engineKey, newEngine);
+    }
+    return newEngine;
+  }
+
+  public getEngineForQuery(
+    cameras: Map<string, CameraConfig>,
+    query: DataQuery,
+  ): DataManagerEngine | null {
+    const cameraConfig = cameras.get(query.cameraID);
+    return cameraConfig ? this.getEngineForCamera(cameraConfig) : null;
+  }
+
+  public getEngineForCamera(cameraConfig: CameraConfig): DataManagerEngine | null {
+    let engineKey: string | null = null;
+    if (cameraConfig.frigate.camera_name) {
+      engineKey = 'frigate';
+    }
+    return engineKey ? this._getOrCreateEngine(engineKey) : null;
+  }
+}

src/utils/data/data-manager-engine-frigate.ts

@@ -0,0 +1,397 @@
+import { HomeAssistant } from 'custom-card-helpers';
+import add from 'date-fns/add';
+import endOfHour from 'date-fns/endOfHour';
+import getUnixTime from 'date-fns/getUnixTime';
+import startOfHour from 'date-fns/startOfHour';
+import { CAMERA_BIRDSEYE } from '../../const';
+import { CameraConfig, FrigateRecording } from '../../types';
+import { MediaQueries, MediaQueriesResults } from '../../view';
+import { ViewMedia, ViewMediaClassifier, ViewMediaFactory } from '../../view-media';
+import { errorToConsole } from '../basic';
+import {
+  getEvents,
+  getRecordingSegments,
+  getRecordingsSummary,
+  NativeFrigateEventQuery,
+  NativeFrigateRecordingSegmentsQuery,
+  RecordingSegments,
+  RecordingSummary,
+  retainEvent,
+} from '../frigate';
+import { RecordingSegmentsCache } from './data-manager-cache';
+import {
+  DataManagerEngine,
+  DATA_MANAGER_ENGINE_EVENT_LIMIT_DEFAULT,
+} from './data-manager-engine';
+import { DataManagerError } from './data-manager-error';
+import { DateRange } from './data-manager-range';
+import {
+  Engine,
+  EventQuery,
+  FrigateEventQueryResults,
+  FrigateRecordingQueryResults,
+  FrigateRecordingSegmentsQueryResults,
+  PartialEventQuery,
+  PartialRecordingQuery,
+  PartialRecordingSegmentsQuery,
+  QueryResults,
+  QueryResultsType,
+  QueryReturnType,
+  QueryType,
+  RecordingQuery,
+  RecordingSegmentsQuery,
+} from './data-types';
+
+const EVENT_REQUEST_CACHE_MAX_AGE_SECONDS = 60;
+const RECORDING_SUMMARY_REQUEST_CACHE_MAX_AGE_SECONDS = 60;
+
+class FrigateQueryResultsClassifier {
+  public static isFrigateEventQueryResults(
+    results: QueryResults,
+  ): results is FrigateEventQueryResults {
+    return results.engine === Engine.Frigate && results.type === QueryResultsType.Event;
+  }
+
+  public static isFrigateRecordingQueryResults(
+    results: QueryResults,
+  ): results is FrigateRecordingQueryResults {
+    return (
+      results.engine === Engine.Frigate && results.type === QueryResultsType.Recording
+    );
+  }
+
+  public static isFrigateRecordingSegmentsResults(
+    results: QueryResults,
+  ): results is FrigateRecordingSegmentsQueryResults {
+    return (
+      results.engine === Engine.Frigate &&
+      results.type === QueryResultsType.RecordingSegments
+    );
+  }
+}
+
+export class FrigateDataManagerEngine implements DataManagerEngine {
+  protected _recordingSegmentsCache: RecordingSegmentsCache;
+
+  constructor(recordingSegmentsCache: RecordingSegmentsCache) {
+    this._recordingSegmentsCache = recordingSegmentsCache;
+  }
+
+  public getMediaDownloadPath(
+    cameraConfig: CameraConfig,
+    media: ViewMedia,
+  ): string | null {
+    let path: string | null = null;
+    if (ViewMediaClassifier.isFrigateEvent(media)) {
+      path =
+        `/api/frigate/${cameraConfig.frigate.client_id}` +
+        `/notifications/${media.getID()}/` +
+        `${media.isClip() ? 'clip.mp4' : 'snapshot.jpg'}` +
+        `?download=true`;
+    } else if (ViewMediaClassifier.isFrigateRecording(media)) {
+      path =
+        `/api/frigate/${cameraConfig.frigate.client_id}` +
+        `/recording/${cameraConfig.frigate.camera_name}` +
+        `/start/${Math.floor(media.getStartTime().getTime() / 1000)}` +
+        `/end/${Math.floor(media.getEndTime().getTime() / 1000)}}` +
+        `?download=true`;
+    }
+    return path;
+  }
+
+  public generateDefaultEventQuery(
+    cameraID: string,
+    cameraConfig: CameraConfig,
+    query: PartialEventQuery,
+  ): EventQuery | null {
+    return {
+      type: QueryType.Event,
+      cameraID: cameraID,
+      ...(cameraConfig.frigate.label && { label: cameraConfig.frigate.label }),
+      ...(cameraConfig.frigate.zone && { zone: cameraConfig.frigate.zone }),
+      ...query,
+    };
+  }
+
+  public generateDefaultRecordingQuery(
+    cameraID: string,
+    _cameraConfig: CameraConfig,
+    query: PartialRecordingQuery,
+  ): RecordingQuery | null {
+    return {
+      type: QueryType.Recording,
+      cameraID: cameraID,
+      ...query,
+    };
+  }
+
+  public generateDefaultRecordingSegmentsQuery(
+    cameraID: string,
+    _cameraConfig: CameraConfig,
+    query: PartialRecordingSegmentsQuery,
+  ): RecordingSegmentsQuery | null {
+    if (!query.start || !query.end) {
+      return null;
+    }
+    return {
+      type: QueryType.RecordingSegments,
+      cameraID: cameraID,
+      start: query.start,
+      end: query.end,
+      ...query,
+    };
+  }
+
+  public async favoriteMedia(
+    hass: HomeAssistant,
+    cameraConfig: CameraConfig,
+    media: ViewMedia,
+    favorite: boolean,
+  ): Promise<void> {
+    const clientID = cameraConfig.frigate.client_id;
+    if (!ViewMediaClassifier.isFrigateEvent(media)) {
+      return;
+    }
+
+    try {
+      await retainEvent(hass, clientID, media.getID(cameraConfig), favorite);
+    } catch (e) {
+      errorToConsole(e as Error);
+      throw new DataManagerError((e as Error).message);
+    }
+
+    media.setFavorite(favorite);
+  }
+
+  public async getEvents(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: EventQuery,
+  ): Promise<QueryReturnType<EventQuery> | null> {
+    const cameraConfig = this._getQueryableCameraConfig(cameras, query.cameraID);
+    if (!cameraConfig) {
+      return null;
+    }
+
+    const nativeQuery: NativeFrigateEventQuery = {
+      instance_id: cameraConfig.frigate.client_id,
+      camera: cameraConfig.frigate.camera_name,
+      ...(query.what && { label: query.what }),
+      ...(query.where && { zone: query.where }),
+      ...(query?.end && { before: Math.floor(query.end.getTime() / 1000) }),
+      ...(query?.start && { after: Math.floor(query.start.getTime() / 1000) }),
+      ...(query?.limit && { limit: query.limit }),
+      ...(query?.hasClip && { has_clip: query.hasClip }),
+      ...(query?.hasSnapshot && { has_snapshot: query.hasSnapshot }),
+      limit: query?.limit ?? DATA_MANAGER_ENGINE_EVENT_LIMIT_DEFAULT,
+    };
+
+    try {
+      const result: FrigateEventQueryResults = {
+        type: QueryResultsType.Event,
+        engine: Engine.Frigate,
+        events: await getEvents(hass, nativeQuery),
+        expiry: add(new Date(), { seconds: EVENT_REQUEST_CACHE_MAX_AGE_SECONDS }),
+      };
+      return result;
+    } catch (e) {
+      errorToConsole(e as Error);
+      throw new DataManagerError((e as Error).message, query);
+    }
+  }
+
+  public async getRecordings(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: RecordingQuery,
+  ): Promise<QueryReturnType<RecordingQuery> | null> {
+    const cameraConfig = this._getQueryableCameraConfig(cameras, query.cameraID);
+    if (!cameraConfig) {
+      return null;
+    }
+    if (!cameraConfig || !cameraConfig.frigate.camera_name) {
+      return null;
+    }
+
+    let recordingSummary: RecordingSummary;
+    try {
+      recordingSummary = await getRecordingsSummary(
+        hass,
+        cameraConfig.frigate.client_id,
+        cameraConfig.frigate.camera_name,
+      );
+    } catch (e) {
+      errorToConsole(e as Error);
+      throw new DataManagerError((e as Error).message, query);
+    }
+
+    const recordings: FrigateRecording[] = [];
+    for (const dayData of recordingSummary ?? []) {
+      for (const hourData of dayData.hours) {
+        const hour = add(dayData.day, { hours: hourData.hour });
+        const startHour = startOfHour(hour);
+        const endHour = endOfHour(hour);
+        if (
+          (!query.start || startHour >= query.start) &&
+          (!query.end || endHour <= query.end)
+        ) {
+          recordings.push({
+            camera: cameraConfig.frigate.camera_name,
+            start_time: getUnixTime(startHour),
+            end_time: getUnixTime(endHour),
+            events: hourData.events,
+          });
+        }
+      }
+    }
+
+    return <FrigateRecordingQueryResults>{
+      type: QueryResultsType.Recording,
+      engine: Engine.Frigate,
+      recordings: recordings,
+      expiry: add(new Date(), {
+        seconds: RECORDING_SUMMARY_REQUEST_CACHE_MAX_AGE_SECONDS,
+      }),
+    };
+  }
+
+  public async getRecordingSegments(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: RecordingSegmentsQuery,
+  ): Promise<QueryReturnType<RecordingSegmentsQuery> | null> {
+    const cameraConfig = this._getQueryableCameraConfig(cameras, query.cameraID);
+    if (!cameraConfig || !cameraConfig.frigate.camera_name) {
+      return null;
+    }
+
+    const range: DateRange = { start: query.start, end: query.end };
+
+    // A note on Frigate Recording Segments:
+    // - Unlike other query types, there is an internal cache at the engine
+    //   level for segments to allow caching "within an existing query" (e.g. if
+    //   we already cached hour 1-8, we will avoid a fetch if we request hours
+    //   2-3 even though the query is different -- the segments won't be). This
+    //   is since the volume of data in segment transfers can be high, and the
+    //   segments can be used in high frequency situations (e.g. video seeking).
+    const cachedSegments = this._recordingSegmentsCache.get(query.cameraID, range);
+    if (cachedSegments) {
+      return {
+        type: QueryResultsType.RecordingSegments,
+        engine: Engine.Frigate,
+        segments: cachedSegments,
+      };
+    }
+
+    const request: NativeFrigateRecordingSegmentsQuery = {
+      instance_id: cameraConfig.frigate.client_id,
+      camera: cameraConfig.frigate.camera_name,
+      after: Math.floor(query.start.getTime() / 1000),
+      before: Math.floor(query.end.getTime() / 1000),
+    };
+
+    let segments: RecordingSegments;
+    try {
+      segments = await getRecordingSegments(hass, request);
+    } catch (e) {
+      errorToConsole(e as Error);
+      throw new DataManagerError((e as Error).message, query);
+    }
+
+    this._recordingSegmentsCache.add(query.cameraID, range, segments);
+
+    return {
+      type: QueryResultsType.RecordingSegments,
+      engine: Engine.Frigate,
+      segments: segments,
+    };
+  }
+
+  public generateMediaFromEvents(
+    query: EventQuery,
+    results: QueryReturnType<EventQuery>,
+  ): ViewMedia[] | null {
+    if (!FrigateQueryResultsClassifier.isFrigateEventQueryResults(results)) {
+      return null;
+    }
+
+    const output: ViewMedia[] = [];
+    for (const event of results.events) {
+      let mediaType: 'clip' | 'snapshot' | null = null;
+      if (
+        !query.hasClip &&
+        !query.hasSnapshot &&
+        (event.has_clip || event.has_snapshot)
+      ) {
+        mediaType = event.has_clip ? 'clip' : 'snapshot';
+      } else if (query.hasSnapshot && event.has_snapshot) {
+        mediaType = 'snapshot';
+      } else if (query.hasClip && event.has_clip) {
+        mediaType = 'clip';
+      }
+      if (!mediaType) {
+        continue;
+      }
+      const media = ViewMediaFactory.createViewMediaFromFrigateEvent(
+        mediaType,
+        query.cameraID,
+        event,
+      );
+      if (media) {
+        output.push(media);
+      }
+    }
+    return output;
+  }
+
+  public generateMediaFromRecordings(
+    query: RecordingQuery,
+    results: QueryReturnType<RecordingQuery>,
+  ): ViewMedia[] | null {
+    if (!FrigateQueryResultsClassifier.isFrigateRecordingQueryResults(results)) {
+      return null;
+    }
+
+    const output: ViewMedia[] = [];
+    for (const recording of results.recordings) {
+      const media = ViewMediaFactory.createViewMediaFromFrigateRecording(
+        query.cameraID,
+        recording,
+      );
+      if (media) {
+        output.push(media);
+      }
+    }
+    return output;
+  }
+
+  public areMediaQueriesResultsFresh(
+    queries: MediaQueries,
+    results: MediaQueriesResults,
+  ): boolean {
+    let freshThreshold: number | null = null;
+    if (queries.areEventQueries()) {
+      freshThreshold = EVENT_REQUEST_CACHE_MAX_AGE_SECONDS;
+    } else if (queries.areRecordingQueries()) {
+      freshThreshold = RECORDING_SUMMARY_REQUEST_CACHE_MAX_AGE_SECONDS;
+    }
+    const now = new Date();
+    const resultsTimestamp = results.getResultsTimestamp();
+    return (
+      !freshThreshold ||
+      !resultsTimestamp ||
+      add(resultsTimestamp, { seconds: freshThreshold }) >= now
+    );
+  }
+
+  protected _getQueryableCameraConfig(
+    cameras: Map<string, CameraConfig>,
+    cameraID: string,
+  ): CameraConfig | null {
+    const cameraConfig = cameras.get(cameraID);
+    if (!cameraConfig || cameraConfig.frigate.camera_name == CAMERA_BIRDSEYE) {
+      return null;
+    }
+    return cameraConfig;
+  }
+}

src/utils/data/data-manager-engine.ts

@@ -0,0 +1,77 @@
+import { HomeAssistant } from 'custom-card-helpers';
+import { CameraConfig } from '../../types';
+import { MediaQueries, MediaQueriesResults } from '../../view';
+import { ViewMedia } from '../../view-media';
+import {
+  EventQuery,
+  PartialEventQuery,
+  PartialRecordingQuery,
+  PartialRecordingSegmentsQuery,
+  QueryReturnType,
+  RecordingQuery,
+  RecordingSegmentsQuery,
+} from './data-types';
+
+export const DATA_MANAGER_ENGINE_EVENT_LIMIT_DEFAULT = 10000;
+
+export interface DataManagerEngine {
+  generateDefaultEventQuery(
+    cameraID: string,
+    cameraConfig: CameraConfig,
+    query: PartialEventQuery,
+  ): EventQuery | null;
+
+  generateDefaultRecordingQuery(
+    cameraID: string,
+    cameraConfig: CameraConfig,
+    query: PartialRecordingQuery,
+  ): RecordingQuery | null;
+
+  generateDefaultRecordingSegmentsQuery(
+    cameraID: string,
+    cameraConfig: CameraConfig,
+    query: PartialRecordingSegmentsQuery,
+  ): RecordingSegmentsQuery | null;
+
+  getEvents(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: EventQuery,
+  ): Promise<QueryReturnType<EventQuery> | null>;
+
+  getRecordings(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: RecordingQuery,
+  ): Promise<QueryReturnType<RecordingQuery> | null>;
+
+  getRecordingSegments(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    query: RecordingSegmentsQuery,
+  ): Promise<QueryReturnType<RecordingSegmentsQuery> | null>;
+
+  generateMediaFromEvents(
+    query: EventQuery,
+    results: QueryReturnType<EventQuery>,
+  ): ViewMedia[] | null;
+
+  generateMediaFromRecordings(
+    query: RecordingQuery,
+    results: QueryReturnType<RecordingQuery>,
+  ): ViewMedia[] | null;
+
+  getMediaDownloadPath(cameraConfig: CameraConfig, media: ViewMedia): string | null;
+
+  favoriteMedia(
+    hass: HomeAssistant,
+    cameraConfig: CameraConfig,
+    media: ViewMedia,
+    favorite: boolean,
+  ): Promise<void>;
+
+  areMediaQueriesResultsFresh(
+    queries: MediaQueries,
+    results: MediaQueriesResults,
+  ): boolean;
+}

src/utils/data/data-manager-error.ts

@@ -0,0 +1,3 @@
+import { FrigateCardError } from '../../types';
+
+export class DataManagerError extends FrigateCardError {}

src/utils/data/data-manager-range.ts

@@ -0,0 +1,84 @@
+import cloneDeep from 'lodash-es/cloneDeep';
+import orderBy from 'lodash-es/orderBy';
+
+interface Range<T extends Date | number> {
+  start: T;
+  end: T;
+}
+
+export type DateRange = Range<Date>;
+
+export class MemoryRangeSet {
+  protected _ranges: DateRange[];
+
+  constructor(ranges?: DateRange[]) {
+    this._ranges = ranges ?? [];
+  }
+
+  public clone(): MemoryRangeSet {
+    return new MemoryRangeSet(cloneDeep(this._ranges));
+  }
+
+  public hasCoverage(range: DateRange): boolean {
+    return this._ranges.some((cachedRange) =>
+      this._isEntirelyContained(cachedRange, range),
+    );
+  }
+
+  public add(range: DateRange): void {
+    this._ranges.push(range);
+    this._ranges = compressRanges(this._ranges);
+  }
+
+  protected _isEntirelyContained(bigger: DateRange, smaller: DateRange): boolean {
+    return smaller.start >= bigger.start && smaller.end <= bigger.end;
+  }
+}
+
+export const rangesOverlap = (a: DateRange, b: DateRange): boolean => {
+  return (
+    // a starts within the range of b.
+    (a.start >= b.start && a.start <= b.end) ||
+    // a events within the range of b.
+    (a.end >= b.start && a.end <= b.end) ||
+    // a encompasses the entire range of b.
+    (a.start <= b.start && a.end >= b.end)
+  );
+}
+
+export const compressRanges = <T extends Date | number>(
+  ranges: Range<T>[],
+  toleranceSeconds = 0,
+): Range<T>[] => {
+  const compressedRanges: Range<T>[] = [];
+  ranges = orderBy(ranges, (range) => range.start, 'asc');
+
+  let current: Range<T> | null = null;
+  for (let i = 0; i < ranges.length; ++i) {
+    const item = ranges[i];
+    const itemStartSeconds =
+      item.start instanceof Date ? item.start.getTime() : item.start;
+
+    if (!current) {
+      current = { ...item };
+      continue;
+    }
+
+    const currentEndSeconds =
+      current.end instanceof Date ? current.end.getTime() : (current.end as number);
+
+    if (currentEndSeconds + toleranceSeconds * 1000 >= itemStartSeconds) {
+      if (item.end > current.end) {
+        current.end = item.end;
+      }
+    } else {
+      compressedRanges.push(current);
+      current = { ...item };
+    }
+  }
+  if (current) {
+    compressedRanges.push(current);
+  }
+
+  return compressedRanges;
+};

src/utils/data/data-manager-util.ts

@@ -0,0 +1,44 @@
+import startOfHour from 'date-fns/startOfHour';
+import endOfHour from 'date-fns/endOfHour';
+import startOfDay from 'date-fns/startOfDay';
+import endOfDay from 'date-fns/endOfDay';
+import endOfMinute from 'date-fns/endOfMinute';
+import endOfWeek from 'date-fns/endOfWeek';
+import startOfWeek from 'date-fns/startOfWeek';
+import { DateRange } from './data-manager-range';
+
+export const convertRangeToCacheFriendlyTimes = (
+  range: DateRange,
+  options?: {
+    endCap?: boolean;
+  },
+): DateRange => {
+  const widthSeconds = (range.end.getTime() - range.start.getTime()) / 1000;
+  let cacheableStart: Date;
+  let cacheableEnd: Date;
+
+  if (widthSeconds <= 60 * 60) {
+    cacheableStart = startOfHour(range.start);
+    cacheableEnd = endOfHour(range.end);
+  } else if (widthSeconds <= 60 * 60 * 24) {
+    cacheableStart = startOfDay(range.start);
+    cacheableEnd = endOfDay(range.end);
+  } else {
+    cacheableStart = startOfWeek(range.start);
+    cacheableEnd = endOfWeek(range.end);
+  }
+
+  if (options?.endCap) {
+    cacheableEnd = endOfMinute(capEndDate(cacheableEnd));
+  }
+
+  return {
+    start: cacheableStart,
+    end: cacheableEnd,
+  };
+};
+
+export const capEndDate = (end: Date): Date => {
+  const now = new Date();
+  return end > now ? now : end;
+};

src/utils/data/data-manager.ts

@@ -0,0 +1,312 @@
+import { HomeAssistant } from 'custom-card-helpers';
+import { CameraConfig } from '../../types.js';
+import { arrayify, setify } from '../basic.js';
+import {
+  DataQuery,
+  EventQuery,
+  EventQueryResults,
+  PartialDataQuery,
+  PartialEventQuery,
+  PartialQueryConcreteType,
+  PartialRecordingQuery,
+  PartialRecordingSegmentsQuery,
+  QueryResults,
+  QueryResultsType,
+  QueryReturnType,
+  QueryType,
+  RecordingQuery,
+  RecordingQueryResults,
+  RecordingSegmentsQuery,
+  RecordingSegmentsQueryResults,
+} from './data-types.js';
+import orderBy from 'lodash-es/orderBy';
+import { DataManagerEngineFactory } from './data-manager-engine-factory.js';
+import { ViewMedia } from '../../view-media.js';
+import { MediaQueries, MediaQueriesResults } from '../../view.js';
+import { MemoryRequestCache } from './data-manager-cache.js';
+
+export class QueryClassifier {
+  public static isEventQuery(query: DataQuery | PartialDataQuery): query is EventQuery {
+    return query.type === QueryType.Event;
+  }
+  public static isRecordingQuery(
+    query: DataQuery | PartialDataQuery,
+  ): query is RecordingQuery {
+    return query.type === QueryType.Recording;
+  }
+  public static isRecordingSegmentsQuery(
+    query: DataQuery | PartialDataQuery,
+  ): query is RecordingSegmentsQuery {
+    return query.type === QueryType.RecordingSegments;
+  }
+}
+
+export class QueryResultClassifier {
+  public static isEventQueryResult(
+    queryResults: QueryResults,
+  ): queryResults is EventQueryResults {
+    return queryResults.type === QueryResultsType.Event;
+  }
+  public static isRecordingQuery(
+    queryResults: QueryResults,
+  ): queryResults is RecordingQueryResults {
+    return queryResults.type === QueryResultsType.Recording;
+  }
+  public static isRecordingSegmentsQuery(
+    queryResults: QueryResults,
+  ): queryResults is RecordingSegmentsQueryResults {
+    return queryResults.type === QueryResultsType.RecordingSegments;
+  }
+}
+
+export type RequestCache = MemoryRequestCache<DataQuery, QueryResults>;
+
+export class DataManager {
+  protected _engineFactory: DataManagerEngineFactory;
+  protected _cameras: Map<string, CameraConfig>;
+  protected _requestCache: RequestCache;
+
+  constructor(
+    engineFactory: DataManagerEngineFactory,
+    cameras: Map<string, CameraConfig>,
+    requestCache: RequestCache,
+  ) {
+    this._engineFactory = engineFactory;
+    this._cameras = cameras;
+    this._requestCache = requestCache;
+  }
+
+  public generateDefaultEventQueries(
+    cameraIDs: string | Set<string>,
+    partialQuery: PartialEventQuery,
+  ): EventQuery[] {
+    return this._generateDefaultQueries(cameraIDs, {
+      ...partialQuery,
+      type: QueryType.Event,
+    });
+  }
+
+  public generateDefaultRecordingQueries(
+    cameraIDs: string | Set<string>,
+    partialQuery: PartialRecordingQuery,
+  ): RecordingQuery[] {
+    return this._generateDefaultQueries(cameraIDs, {
+      ...partialQuery,
+      type: QueryType.Recording,
+    });
+  }
+
+  public generateDefaultRecordingSegmentsQueries(
+    cameraIDs: string | Set<string>,
+    partialQuery: PartialRecordingSegmentsQuery,
+  ): RecordingSegmentsQuery[] {
+    return this._generateDefaultQueries(cameraIDs, {
+      ...partialQuery,
+      type: QueryType.RecordingSegments,
+    });
+  }
+
+  protected _generateDefaultQueries<PQT extends Partial<DataQuery>>(
+    cameraIDs: string | Set<string>,
+    partialQuery: PQT,
+  ): PartialQueryConcreteType<PQT>[] {
+    const concreteQueries: PartialQueryConcreteType<PQT>[] = [];
+    const _cameraIDs = setify(cameraIDs);
+
+    _cameraIDs.forEach((cameraID) => {
+      const cameraConfig = this._cameras.get(cameraID);
+      if (!cameraConfig) {
+        return;
+      }
+
+      const engine = this._engineFactory.getEngineForCamera(cameraConfig);
+      if (!engine) {
+        return;
+      }
+
+      let query: DataQuery | null = null;
+      if (QueryClassifier.isEventQuery(partialQuery)) {
+        query = engine.generateDefaultEventQuery(cameraID, cameraConfig, partialQuery);
+      } else if (QueryClassifier.isRecordingQuery(partialQuery)) {
+        query = engine.generateDefaultRecordingQuery(
+          cameraID,
+          cameraConfig,
+          partialQuery,
+        );
+      } else if (QueryClassifier.isRecordingSegmentsQuery(partialQuery)) {
+        query = engine.generateDefaultRecordingSegmentsQuery(
+          cameraID,
+          cameraConfig,
+          partialQuery,
+        );
+      }
+
+      if (query) {
+        concreteQueries.push(query as PartialQueryConcreteType<PQT>);
+      }
+    });
+    return concreteQueries;
+  }
+
+  public async getEvents(
+    hass: HomeAssistant,
+    query: EventQuery | EventQuery[],
+  ): Promise<Map<EventQuery, EventQueryResults>> {
+    return await this._handleQuery(hass, query);
+  }
+
+  public async getRecordings(
+    hass: HomeAssistant,
+    query: RecordingQuery | RecordingQuery[],
+  ): Promise<Map<RecordingQuery, RecordingQueryResults>> {
+    return await this._handleQuery(hass, query);
+  }
+
+  public async getRecordingSegments(
+    hass: HomeAssistant,
+    query: RecordingSegmentsQuery | RecordingSegmentsQuery[],
+  ): Promise<Map<RecordingSegmentsQuery, RecordingSegmentsQueryResults>> {
+    return await this._handleQuery(hass, query);
+  }
+
+  public async executeMediaQuery(
+    hass: HomeAssistant,
+    mediaQuerys: MediaQueries,
+  ): Promise<MediaQueriesResults | null> {
+    const queries: (RecordingQuery | EventQuery)[] | null = mediaQuerys.getQueries();
+    if (!queries) {
+      return null;
+    }
+
+    const results = await this._handleQuery(hass, queries);
+
+    const mediaArray: ViewMedia[] = [];
+    for (const [query, result] of results.entries()) {
+      const engine = this._engineFactory.getEngineForQuery(this._cameras, query);
+      if (engine) {
+        let media: ViewMedia[] | null = null;
+        if (
+          QueryClassifier.isEventQuery(query) &&
+          QueryResultClassifier.isEventQueryResult(result)
+        ) {
+          media = engine.generateMediaFromEvents(query, result);
+        } else if (
+          QueryClassifier.isRecordingQuery(query) &&
+          QueryResultClassifier.isRecordingQuery(result)
+        ) {
+          media = engine.generateMediaFromRecordings(query, result);
+        }
+        if (media) {
+          mediaArray.push(...media);
+        }
+      }
+    }
+
+    return mediaArray.length
+      ? new MediaQueriesResults(
+          orderBy(mediaArray, (media) => media.getStartTime(), 'desc'),
+          // Select the first (most-recent) item.
+          0,
+        )
+      : null;
+  }
+
+  public getMediaDownloadPath(media: ViewMedia): string | null {
+    const cameraConfig = this._cameras.get(media.getCameraID());
+    const engine = cameraConfig
+      ? this._engineFactory.getEngineForCamera(cameraConfig)
+      : null;
+    if (!cameraConfig || !engine) {
+      return null;
+    }
+    return engine.getMediaDownloadPath(cameraConfig, media);
+  }
+
+  public async favoriteMedia(
+    hass: HomeAssistant,
+    cameraConfig: CameraConfig,
+    media: ViewMedia,
+    favorite: boolean,
+  ): Promise<void> {
+    const engine = this._engineFactory.getEngineForCamera(cameraConfig);
+    if (engine) {
+      engine.favoriteMedia(hass, cameraConfig, media, favorite);
+    }
+  }
+
+  public areMediaQueriesResultsFresh(
+    queries: MediaQueries,
+    results: MediaQueriesResults,
+  ): boolean {
+    const cameraIDs: Set<string> = new Set();
+    (queries.getQueries() ?? []).forEach((query) => cameraIDs.add(query.cameraID));
+    for (const cameraID of cameraIDs) {
+      const cameraConfig = this._cameras.get(cameraID);
+      if (!cameraConfig) {
+        return false;
+      }
+      const engine = this._engineFactory.getEngineForCamera(cameraConfig);
+      if (!engine || !engine.areMediaQueriesResultsFresh(queries, results)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  protected async _handleQuery<QT extends DataQuery>(
+    hass: HomeAssistant,
+    query: QT | QT[],
+  ): Promise<Map<QT, QueryReturnType<QT>>> {
+    const _queries = arrayify(query);
+    const results = new Map<QT, QueryReturnType<QT>>();
+
+    const queryStartTime = new Date();
+    let queryCachedCount = 0;
+
+    const processQuery = async (query: QT): Promise<void> => {
+      const cachedResult: QueryReturnType<QT> | null = this._requestCache.get(
+        query,
+      ) as QueryReturnType<QT> | null;
+      if (cachedResult) {
+        queryCachedCount++;
+        results.set(query, cachedResult);
+        return;
+      }
+
+      const engine = this._engineFactory.getEngineForQuery(this._cameras, query);
+      if (!engine) {
+        return;
+      }
+
+      let result: QueryResults | null = null;
+      if (QueryClassifier.isEventQuery(query)) {
+        result = await engine.getEvents(hass, this._cameras, query);
+      } else if (QueryClassifier.isRecordingQuery(query)) {
+        result = await engine.getRecordings(hass, this._cameras, query);
+      } else if (QueryClassifier.isRecordingSegmentsQuery(query)) {
+        result = await engine.getRecordingSegments(hass, this._cameras, query);
+      }
+
+      if (result) {
+        if (result.expiry) {
+          this._requestCache.set(query, result, result.expiry);
+        }
+        results.set(query, result as QueryReturnType<QT>);
+      }
+    };
+
+    await Promise.all(_queries.map((query) => processQuery(query)));
+
+    console.debug(
+      'Frigate Card DataManager request (Cached:',
+      `${queryCachedCount}/${_queries.length},`,
+      `Duration: ${(new Date().getTime() - queryStartTime.getTime()) / 1000}s,`,
+      'Queries:',
+      _queries,
+      ', Results:',
+      results,
+      ')',
+    );
+    return results;
+  }
+}

src/utils/data/data-types.ts

@@ -0,0 +1,138 @@
+import { FrigateEvents, FrigateRecording } from '../../types';
+import { RecordingSegments } from '../frigate';
+
+// ====
+// Base
+// ====
+
+export enum QueryType {
+  Event = 'event-query',
+  Recording = 'recording-query',
+  RecordingSegments = 'recording-segments-query',
+}
+
+export enum QueryResultsType {
+  Event = 'event-results',
+  Recording = 'recording-results',
+  RecordingSegments = 'recording-segments-results',
+}
+
+export enum Engine {
+  Frigate = 'frigate',
+}
+
+export interface DataQuery {
+  type: QueryType;
+  cameraID: string;
+}
+export type PartialDataQuery = Partial<DataQuery>;
+
+export interface TimeBasedDataQuery {
+  start: Date;
+  end: Date;
+}
+
+export interface LimitedDataQuery {
+  limit: number;
+}
+
+export interface MediaQuery
+  extends DataQuery,
+    Partial<TimeBasedDataQuery>,
+    Partial<LimitedDataQuery> {}
+
+export interface QueryResults {
+  type: QueryResultsType;
+  engine: Engine;
+  expiry?: Date;
+}
+
+export type QueryReturnType<QT> = QT extends EventQuery
+  ? EventQueryResults
+  : QT extends RecordingQuery
+  ? RecordingQueryResults
+  : QT extends RecordingSegmentsQuery
+  ? RecordingSegmentsQueryResults
+  : never;
+export type PartialQueryConcreteType<PQT> = PQT extends PartialEventQuery
+  ? EventQuery
+  : PQT extends PartialRecordingQuery
+  ? RecordingQuery
+  : PQT extends PartialRecordingSegmentsQuery
+  ? RecordingSegmentsQuery
+  : never;
+
+// ===========
+// Event Query
+// ===========
+
+export interface EventQuery extends MediaQuery {
+  type: QueryType.Event;
+
+  // Frigate equivalent: has_snapshot
+  hasSnapshot?: boolean;
+
+  // Frigate equivalent: has_clip
+  hasClip?: boolean;
+
+  // Frigate equivalent: label
+  what?: string;
+
+  // Frigate equivalent: zone
+  where?: string;
+}
+export type PartialEventQuery = Partial<EventQuery>;
+
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
+export interface EventQueryResults extends QueryResults {
+  type: QueryResultsType.Event;
+}
+
+// ===============
+// Recording Query
+// ===============
+
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
+export interface RecordingQuery extends MediaQuery {
+  type: QueryType.Recording;
+}
+export type PartialRecordingQuery = Partial<RecordingQuery>;
+
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
+export interface RecordingQueryResults extends QueryResults {
+  type: QueryResultsType.Recording;
+}
+
+// ========================
+// Recording Segments Query
+// ========================
+
+export interface RecordingSegmentsQuery extends DataQuery, TimeBasedDataQuery {
+  type: QueryType.RecordingSegments;
+}
+export type PartialRecordingSegmentsQuery = Partial<RecordingSegmentsQuery>;
+//export type PartialRecordingSegmentsQuery = Partial<RecordingSegmentsQuery> & { type: QueryType.RecordingSegments };
+
+export interface RecordingSegmentsQueryResults extends QueryResults {
+  type: QueryResultsType.RecordingSegments;
+  segments: RecordingSegments;
+}
+
+// ========================
+// Frigate concrete results
+// ========================
+
+export interface FrigateEventQueryResults extends EventQueryResults {
+  engine: Engine.Frigate;
+  events: FrigateEvents;
+}
+
+export interface FrigateRecordingQueryResults extends RecordingQueryResults {
+  engine: Engine.Frigate;
+  recordings: FrigateRecording[];
+}
+
+export interface FrigateRecordingSegmentsQueryResults
+  extends RecordingSegmentsQueryResults {
+  engine: Engine.Frigate;
+}

src/utils/frigate.ts

@@ -1,19 +1,15 @@
 import { HomeAssistant } from 'custom-card-helpers';
 import utcToZonedTime from 'date-fns-tz/utcToZonedTime';
-import differenceInHours from 'date-fns/differenceInHours';
-import differenceInMinutes from 'date-fns/differenceInMinutes';
-import differenceInSeconds from 'date-fns/differenceInSeconds';
 import fromUnixTime from 'date-fns/fromUnixTime';
 import { z } from 'zod';
 import { localize } from '../localize/localize';
 import {
-  BrowseRecordingQueryParameters,
   ClipsOrSnapshots,
-  ExtendedHomeAssistant,
   FrigateCardError,
   FrigateEvent,
   FrigateEvents,
   frigateEventsSchema,
+  FrigateRecording,
 } from '../types';
 import { formatDateAndTime, prettifyTitle } from './basic';
 import { homeAssistantWSRequest } from './ha';
@@ -63,6 +59,8 @@ const recordingSegmentSchema = z.object({
   end_time: z.number(),
   id: z.string(),
 });
+export type RecordingSegment = z.infer<typeof recordingSegmentSchema>;
+
 const recordingSegmentsSchema = recordingSegmentSchema.array();
 export type RecordingSegments = z.infer<typeof recordingSegmentsSchema>;
 
@@ -80,7 +78,7 @@ export type RetainResult = z.infer<typeof retainResultSchema>;
  * @returns A RecordingSummary object.
  */
 export const getRecordingsSummary = async (
-  hass: ExtendedHomeAssistant,
+  hass: HomeAssistant,
   client_id: string,
   camera_name: string,
 ): Promise<RecordingSummary> => {
@@ -96,31 +94,29 @@ export const getRecordingsSummary = async (
   );
 };
 
+export interface NativeFrigateRecordingSegmentsQuery {
+  instance_id: string;
+  camera: string;
+  after: number;
+  before: number;
+}
+
 /**
  * Get the recording segments. May throw.
  * @param hass The Home Assistant object.
- * @param client_id The Frigate client_id.
- * @param camera_name The Frigate camera name.
- * @param before The segment low watermark.
- * @param after The segment high watermark.
+ * @param params The recording segment query parameters.
  * @returns A RecordingSegments object.
  */
 export const getRecordingSegments = async (
-  hass: ExtendedHomeAssistant,
-  client_id: string,
-  camera_name: string,
-  before: Date,
-  after: Date,
+  hass: HomeAssistant,
+  params: NativeFrigateRecordingSegmentsQuery,
 ): Promise<RecordingSegments> => {
   return await homeAssistantWSRequest(
     hass,
     recordingSegmentsSchema,
     {
       type: 'frigate/recordings/get',
-      instance_id: client_id,
-      camera: camera_name,
-      before: Math.floor(before.getTime() / 1000),
-      after: Math.ceil(after.getTime() / 1000),
+      ...params,
     },
     true,
   );
@@ -159,7 +155,7 @@ export async function retainEvent(
   }
 }
 
-export interface FrigateGetEventsParameters {
+export interface NativeFrigateEventQuery {
   instance_id?: string;
   camera?: string;
   label?: string;
@@ -179,7 +175,7 @@ export interface FrigateGetEventsParameters {
  */
 export const getEvents = async (
   hass: HomeAssistant,
-  params?: FrigateGetEventsParameters,
+  params?: NativeFrigateEventQuery,
 ): Promise<FrigateEvents> => {
   return await homeAssistantWSRequest(
     hass,
@@ -192,29 +188,6 @@ export const getEvents = async (
   );
 };
 
-/**
- * Get multiple sets of events.
- * @param hass The Home Assistant object.
- * @param params A Map of parameters keyed on any key.
- * @returns A Map of key -> events.
- */
-export const getEventsMultiple = async <T>(
-  hass: HomeAssistant,
-  params: Map<T, FrigateGetEventsParameters>,
-): Promise<Map<T, FrigateEvents>> => {
-  const output: Map<T, FrigateEvents> = new Map();
-  const getEventsAndStore = async (
-    key: T,
-    param: FrigateGetEventsParameters,
-  ): Promise<void> => {
-    output.set(key, await getEvents(hass, param));
-  };
-  await Promise.all(
-    Array.from(params).map(([key, param]) => getEventsAndStore(key, param)),
-  );
-  return output;
-};
-
 /**
  * Given an event generate a title.
  * @param event
@@ -233,6 +206,12 @@ export const getEventTitle = (event: FrigateEvent): string => {
   )}%]`;
 };
 
+export const getRecordingTitle = (recording: FrigateRecording): string => {
+  return `${prettifyTitle(recording.camera)} ${formatDateAndTime(
+    fromUnixTime(recording.start_time),
+  )}`;
+};
+
 /**
  * Get a thumbnail URL for an event.
  * @param clientId The Frigate client id.
@@ -254,10 +233,10 @@ export const getEventThumbnailURL = (clientId: string, event: FrigateEvent): str
 export const getEventMediaContentID = (
   clientId: string,
   cameraName: string,
-  id: string,
+  event: FrigateEvent,
   mediaType: ClipsOrSnapshots,
 ): string => {
-  return `media-source://frigate/${clientId}/event/${mediaType}/${cameraName}/${id}`;
+  return `media-source://frigate/${clientId}/event/${mediaType}/${cameraName}/${event.id}`;
 };
 
 /**
@@ -267,43 +246,19 @@ export const getEventMediaContentID = (
  * @returns A recording identifier.
  */
 export const getRecordingMediaContentID = (
-  params: BrowseRecordingQueryParameters,
+  clientId: string,
+  cameraName: string,
+  recording: FrigateRecording,
 ): string => {
+  const date = fromUnixTime(recording.start_time);
   return [
     'media-source://frigate',
-    params.clientId,
+    clientId,
     'recordings',
-    `${params.year}-${String(params.month).padStart(2, '0')}`,
-    String(params.day).padStart(2, '0'),
-    String(params.hour).padStart(2, '0'),
-    params.cameraName,
+    cameraName,
+    `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(
+      String(date.getDate()).padStart(2, '0'),
+    )}`,
+    String(date.getHours()).padStart(2, '0'),
   ].join('/');
 };
-
-/**
- * Convenience function to convert a timestamp to hours, minutes and seconds
- * string. Heavily inspired by, and returning the same format as, the Frigate
- * UI: https://github.com/blakeblackshear/frigate/blob/master/web/src/components/RecordingPlaylist.jsx#L97
- * @param event The Frigate event.
- * @returns A duration string.
- */
-export function getEventDurationString(event: FrigateEvent): string {
-  if (!event.end_time) {
-    return localize('event.in_progress');
-  }
-  const start = fromUnixTime(event.start_time);
-  const end = fromUnixTime(event.end_time);
-  const hours = differenceInHours(end, start);
-  const minutes = differenceInMinutes(end, start) - hours * 60;
-  const seconds = differenceInSeconds(end, start) - hours * 60 * 60 - minutes * 60;
-  let duration = '';
-
-  if (hours) {
-    duration += `${hours}h `;
-  }
-  if (minutes) {
-    duration += `${minutes}m `;
-  }
-  duration += `${seconds}s`;
-  return duration;
-}

src/utils/ha/browse-media.ts

@@ -1,11 +1,6 @@
 import { HomeAssistant } from 'custom-card-helpers';
-import { ViewContext } from 'view';
 import { homeAssistantWSRequest } from '.';
-import {
-  dispatchErrorMessageEvent,
-  dispatchFrigateCardErrorEvent,
-  dispatchMessageEvent,
-} from '../../components/message.js';
+import { dispatchErrorMessageEvent } from '../../components/message.js';
 import { localize } from '../../localize/localize.js';
 import {
   BrowseMediaQueryParameters,
@@ -14,7 +9,6 @@ import {
   ClipsOrSnapshots,
   FrigateBrowseMediaSource,
   frigateBrowseMediaSourceSchema,
-  FrigateCardError,
   FrigateEvent,
   FrigateRecording,
   MEDIA_CLASS_PLAYLIST,
@@ -22,7 +16,6 @@ import {
   MEDIA_TYPE_PLAYLIST,
   MEDIA_TYPE_VIDEO,
 } from '../../types.js';
-import { View } from '../../view.js';
 import { getAllDependentCameras, getCameraTitle } from '../camera.js';
 
 /**
@@ -119,7 +112,7 @@ const browseMediaQuery = async (
   if (params.cameraID) {
     result.children?.forEach((child: FrigateBrowseMediaSource) => {
       (child.frigate ??= {}).cameraID = params.cameraID;
-    })
+    });
   }
   return result;
 };
@@ -185,7 +178,10 @@ export const mergeFrigateBrowseMediaSources = async (
     }
   }
 
-  return createEventParentForChildren('Merged events', children.sort(sortYoungestToOldest));
+  return createEventParentForChildren(
+    'Merged events',
+    children.sort(sortYoungestToOldest),
+  );
 };
 
 /**
@@ -290,81 +286,6 @@ export const getFullDependentBrowseMediaQueryParametersOrDispatchError = (
   return params;
 };
 
-/**
- * Fetch the latest media and dispatch a change view event to reflect the
- * results. If no media is found a suitable message event will be triggered
- * instead.
- * @param element The HTMLElement to dispatch events from.
- * @param hass The Home Assistant object.
- * @param view The current view to evolve.
- * @param browseMediaQueryParameters The media parameters to query with.
- * @returns
- */
-export const fetchLatestMediaAndDispatchViewChange = async (
-  element: HTMLElement,
-  hass: HomeAssistant,
-  view: Readonly<View>,
-  browseMediaQueryParameters: BrowseMediaQueryParameters | BrowseMediaQueryParameters[],
-): Promise<void> => {
-  let parent: FrigateBrowseMediaSource | null;
-  try {
-    parent = await multipleBrowseMediaQueryMerged(hass, browseMediaQueryParameters);
-  } catch (e) {
-    return dispatchFrigateCardErrorEvent(element, e as FrigateCardError);
-  }
-  const childIndex = getFirstTrueMediaChildIndex(parent);
-  if (!parent || !parent.children || childIndex == null) {
-    return dispatchMessageEvent(
-      element,
-      view.isClipRelatedView()
-        ? localize('common.no_clip')
-        : localize('common.no_snapshot'),
-      'info',
-      {
-        icon: view.isClipRelatedView() ? 'mdi:filmstrip-off' : 'mdi:camera-off',
-      },
-    );
-  }
-
-  view
-    .evolve({
-      target: parent,
-      childIndex: childIndex,
-    })
-    .dispatchChangeEvent(element);
-};
-
-/**
- * Fetch the media of a child FrigateBrowseMediaSource object and dispatch a change
- * view event to reflect the results.
- * @param node The HTMLElement to dispatch events from.
- * @param hass The Home Assistant object.
- * @param view The current view to evolve.
- * @param child The FrigateBrowseMediaSource child to query for.
- * @returns
- */
-export const fetchChildMediaAndDispatchViewChange = async (
-  element: HTMLElement,
-  hass: HomeAssistant,
-  view: Readonly<View>,
-  child: Readonly<FrigateBrowseMediaSource>,
-  context?: ViewContext,
-): Promise<void> => {
-  let parent: FrigateBrowseMediaSource;
-  try {
-    parent = await browseMedia(hass, child.media_content_id);
-  } catch (e) {
-    return dispatchFrigateCardErrorEvent(element, e as FrigateCardError);
-  }
-
-  view
-    .evolve({
-      target: parent,
-    })
-    .mergeInContext(context)
-    .dispatchChangeEvent(element);
-};
-
 /**
  * Given an array of media children, create a parent for them.
  * @param title The title to use for the parent.
@@ -402,7 +323,7 @@ export const createChild = (
     thumbnail?: string;
     recording?: FrigateRecording;
     event?: FrigateEvent;
-    cameraID?: string,
+    cameraID?: string;
   },
 ): FrigateBrowseMediaSource => {
   const result: FrigateBrowseMediaSource = {
@@ -413,10 +334,10 @@ export const createChild = (
     can_play: true,
     can_expand: false,
     thumbnail: options?.thumbnail ?? null,
-    children: null
-  }
+    children: null,
+  };
   if (options?.recording || options?.cameraID || options?.event) {
-    result.frigate = {}
+    result.frigate = {};
     if (options?.event) {
       result.frigate.event = options.event;
     }
@@ -443,38 +364,12 @@ export const sortYoungestToOldest = (
   const a_source = a.frigate?.event ?? a.frigate?.recording;
   const b_source = b.frigate?.event ?? b.frigate?.recording;
 
-  if (
-    !a_source ||
-    (b_source && b_source.start_time > a_source.start_time)
-  ) {
+  if (!a_source || (b_source && b_source.start_time > a_source.start_time)) {
     return 1;
   }
 
-  if (
-    !b_source ||
-    (a_source && b_source.start_time < a_source.start_time)
-  ) {
+  if (!b_source || (a_source && b_source.start_time < a_source.start_time)) {
     return -1;
   }
   return 0;
 };
-/**
- * Generate a recording identifier.
- * @param hass The HomeAssistant object.
- * @param params The recording parameters to use in the identifer.
- * @returns A recording identifier.
- */
-export const generateRecordingIdentifier = (
-  params: BrowseRecordingQueryParameters,
-): string => {
-  return [
-    'media-source://frigate',
-    params.clientId,
-    'recordings',
-    params.cameraName,
-    `${params.year}-${String(params.month).padStart(2, '0')}-${String(
-      params.day,
-    ).padStart(2, '0')}`,
-    String(params.hour).padStart(2, '0'),
-  ].join('/');
-};

src/utils/ha/resolved-media.ts

@@ -1,11 +1,7 @@
 import { HomeAssistant } from 'custom-card-helpers';
 import QuickLRU from 'quick-lru';
 import { homeAssistantWSRequest } from '.';
-import {
-  FrigateBrowseMediaSource,
-  ResolvedMedia,
-  resolvedMediaSchema,
-} from '../../types.js';
+import { ResolvedMedia, resolvedMediaSchema } from '../../types.js';
 import { errorToConsole } from '../basic';
 
 // It's important the cache size be at least as large as the largest likely
@@ -53,25 +49,22 @@ export class ResolvedMediaCache {
 /**
  * Resolve a given media source item.
  * @param hass The Home Assistant object.
- * @param mediaSource The media source object.
+ * @param mediaContentID The media content ID.
  * @param cache An optional ResolvedMediaCache object.
  * @returns The resolved media or `null`.
  */
 export const resolveMedia = async (
   hass: HomeAssistant,
-  mediaSource?: FrigateBrowseMediaSource,
+  mediaContentID: string,
   cache?: ResolvedMediaCache,
 ): Promise<ResolvedMedia | null> => {
-  if (!mediaSource) {
-    return null;
-  }
-  const cachedValue = cache ? cache.get(mediaSource.media_content_id) : undefined;
+  const cachedValue = cache ? cache.get(mediaContentID) : undefined;
   if (cachedValue) {
     return cachedValue;
   }
   const request = {
     type: 'media_source/resolve_media',
-    media_content_id: mediaSource.media_content_id,
+    media_content_id: mediaContentID,
   };
   let resolvedMedia: ResolvedMedia | null = null;
   try {
@@ -80,7 +73,7 @@ export const resolveMedia = async (
     errorToConsole(e as Error);
   }
   if (cache && resolvedMedia) {
-    cache.set(mediaSource.media_content_id, resolvedMedia);
+    cache.set(mediaContentID, resolvedMedia);
   }
   return resolvedMedia;
 };

src/utils/media-to-view.ts

@@ -1,27 +1,73 @@
 import add from 'date-fns/add';
-import endOfHour from 'date-fns/endOfHour';
 import fromUnixTime from 'date-fns/fromUnixTime';
-import getUnixTime from 'date-fns/getUnixTime';
 import startOfHour from 'date-fns/startOfHour';
 import sub from 'date-fns/sub';
 import { ViewContext } from 'view';
-import { dispatchMessageEvent } from '../components/message';
-import { localize } from '../localize/localize';
-import { CameraConfig, ExtendedHomeAssistant, FrigateBrowseMediaSource } from '../types';
-import { View } from '../view';
-import { formatDateAndTime, prettifyTitle } from './basic';
-import { getRecordingMediaContentID } from './frigate';
-import {
-  createChild,
-  createEventParentForChildren,
-  sortYoungestToOldest,
-} from './ha/browse-media';
-import {
-  RecordingSegmentsItem,
-  sortOldestToYoungest,
-  DataManager,
-} from './data-manager';
-import { getAllDependentCameras, getTrueCameras } from './camera.js';
+import { CameraConfig, ClipsOrSnapshotsOrAll, FrigateCardView } from '../types';
+import { EventMediaQueries, RecordingMediaQueries, View } from '../view';
+import { RecordingSegments } from './frigate';
+import { DataManager } from './data/data-manager';
+import { getAllDependentCameras } from './camera.js';
+import { ViewMedia, ViewMediaClassifier } from '../view-media';
+import { HomeAssistant } from 'custom-card-helpers';
+
+export const changeViewToRecentEventsForCameraAndDependents = async (
+  element: HTMLElement,
+  hass: HomeAssistant,
+  dataManager: DataManager,
+  cameras: Map<string, CameraConfig>,
+  view: View,
+  options?: {
+    mediaType?: ClipsOrSnapshotsOrAll;
+    targetView?: FrigateCardView;
+  },
+): Promise<void> => {
+  (
+    await createViewForEvents(hass, dataManager, cameras, view, {
+      ...options,
+      limit: 50, // Capture the 50 most recent events.
+    })
+  ).dispatchChangeEvent(element);
+};
+
+export const createViewForEvents = async (
+  hass: HomeAssistant,
+  dataManager: DataManager,
+  cameras: Map<string, CameraConfig>,
+  view: View,
+  options?: {
+    query?: EventMediaQueries;
+    cameraIDs?: Set<string>;
+    mediaType?: ClipsOrSnapshotsOrAll;
+    targetView?: FrigateCardView;
+    limit?: number;
+  },
+): Promise<View> => {
+  let query: EventMediaQueries;
+  if (options?.query) {
+    query = options.query;
+  } else {
+    const cameraIDs: Set<string> = options?.cameraIDs
+      ? options.cameraIDs
+      : new Set(getAllDependentCameras(cameras, view.camera));
+
+    const queries = dataManager.generateDefaultEventQueries(cameraIDs, {
+      ...(options?.limit && { limit: options.limit }),
+      ...((!options?.mediaType || ['clips', 'all'].includes(options.mediaType)) && {
+        has_clip: true,
+      }),
+      ...(options?.mediaType === 'snapshots' && { has_snapshot: true }),
+    });
+    query = new EventMediaQueries(queries);
+  }
+  const queryResults = await dataManager.executeMediaQuery(hass, query);
+
+  return view?.evolve({
+    view: options?.targetView,
+    query: query,
+    queryResults: queryResults,
+  });
+};
 
 /**
  * Change the view to a recent recording.
@@ -34,7 +80,7 @@ import { getAllDependentCameras, getTrueCameras } from './camera.js';
  */
 export const changeViewToRecentRecordingForCameraAndDependents = async (
   element: HTMLElement,
-  hass: ExtendedHomeAssistant,
+  hass: HomeAssistant,
   dataManager: DataManager,
   cameras: Map<string, CameraConfig>,
   view: View,
@@ -43,20 +89,19 @@ export const changeViewToRecentRecordingForCameraAndDependents = async (
   },
 ): Promise<void> => {
   const now = new Date();
-
-  await changeViewToRecording(element, hass, dataManager, cameras, view, {
+  (
+    await createViewForRecordings(hass, dataManager, cameras, view, {
       ...options,
-
-    // Fetch 1 days worth of recordings (including recordings that are for the current hour).
-    cameraIDs: getAllDependentCameras(cameras, view.camera),
-    start: sub(now, { days: 1 }),
+      // Fetch 7 days worth of recordings (including recordings that are for the
+      // current hour).
+      start: sub(now, { days: 7 }),
       end: add(now, { hours: 1 }),
-  });
+    })
+  ).dispatchChangeEvent(element);
 };
 
 /**
- * Change the view to a recording.
- * @param element The element to dispatch the view change from.
+ * Create a view for recordings.
  * @param hass The Home Assistant object.
  * @param dataManager The datamanager to use for data access.
  * @param cameras The camera configurations.
@@ -65,9 +110,8 @@ export const changeViewToRecentRecordingForCameraAndDependents = async (
  * targetTime to seek to, a targetView to dispatch to and a set of cameraIDs to
  * restrict to.
  */
-export const changeViewToRecording = async (
-  element: HTMLElement,
-  hass: ExtendedHomeAssistant,
+export const createViewForRecordings = async (
+  hass: HomeAssistant,
   dataManager: DataManager,
   cameras: Map<string, CameraConfig>,
   view: View,
@@ -78,149 +122,90 @@ export const changeViewToRecording = async (
     start?: Date;
     end?: Date;
   },
-): Promise<void> => {
-  if (options && options.start && options.end) {
-    await dataManager.fetchIfNecessary(element, hass, options.start, options.end);
-  }
-
+): Promise<View> => {
   const cameraIDs: Set<string> = options?.cameraIDs
     ? options.cameraIDs
-    : new Set([view.camera]);
-  const children = createRecordingChildren(dataManager, cameras, cameraIDs, {
-    ...(options?.start && options?.end && { start: options.start, end: options.end }),
+    : new Set(getAllDependentCameras(cameras, view.camera));
+
+  const queries = dataManager.generateDefaultRecordingQueries(cameraIDs, {
+    ...(options?.start && { start: options.start }),
+    ...(options?.end && { end: options.end }),
   });
 
-  if (!children.length) {
-    return dispatchMessageEvent(element, localize('common.no_recording'), 'info', {
-      icon: 'mdi:album',
-    });
+  const query = new RecordingMediaQueries(queries);
+  const queryResults = await dataManager.executeMediaQuery(hass, query);
+
+  let viewerContext: ViewContext | undefined = {};
+  const mediaArray = queryResults?.getResults();
+  if (queryResults && mediaArray && options?.targetTime) {
+    queryResults.selectBestResult((media) =>
+      findClosestMediaIndex(media, options.targetTime as Date, cameraIDs),
+    );
+    viewerContext = await generateMediaViewerContext(
+      hass,
+      dataManager,
+      mediaArray,
+      options.targetTime,
+    );
   }
 
-  const viewerContext = options?.targetTime
-    ? generateMediaViewerContextForChildren(dataManager, children, options.targetTime)
-    : {};
-  const childIndex = options?.targetTime
-    ? findChildIndex(children, options.targetTime, cameraIDs)
-    : null;
-  const child = childIndex !== null ? children[childIndex] ?? null : null;
-
+  return (
     view
       ?.evolve({
         view: options?.targetView ? options.targetView : 'recording',
-      target: createEventParentForChildren(localize('common.recordings'), children),
-      childIndex: childIndex ?? 0,
-      ...(child?.frigate?.cameraID && { camera: child.frigate?.cameraID }),
+        query: query,
+        queryResults: queryResults,
       })
-    .mergeInContext(viewerContext)
-    .dispatchChangeEvent(element);
-};
-
-/**
- * Create recording objects.
- * @param dataManager The datamanager to use for data access.
- * @param cameras The camera configurations.
- * @param cameraIDs The camera IDs to include recordings for.
- * @param options A specific window (start and end) to allow recordings for.
- * @returns
- */
-const createRecordingChildren = (
-  dataManager: DataManager,
-  cameras: Map<string, CameraConfig>,
-  cameraIDs: Set<string>,
-  options?: {
-    start?: Date;
-    end?: Date;
-  },
-): FrigateBrowseMediaSource[] => {
-  const children: FrigateBrowseMediaSource[] = [];
-
-  for (const cameraID of getTrueCameras(cameras, cameraIDs)) {
-    const config = cameras.get(cameraID) ?? null;
-    const recordingSummary = dataManager.getRecordingSummaryForCamera(cameraID);
-    if (!config?.frigate.camera_name || !recordingSummary) {
-      continue;
-    }
-
-    for (const dayData of recordingSummary) {
-      for (const hourData of dayData.hours) {
-        const hour = add(dayData.day, { hours: hourData.hour });
-        const startHour = startOfHour(hour);
-        const endHour = endOfHour(hour);
-
-        if (
-          (!options?.start || startHour >= options.start) &&
-          (!options?.end || endHour <= options.end)
-        ) {
-          children.push(
-            createChild(
-              `${prettifyTitle(config.frigate.camera_name)} ${formatDateAndTime(hour)}`,
-              getRecordingMediaContentID({
-                clientId: config.frigate.client_id,
-                year: dayData.day.getFullYear(),
-                month: dayData.day.getMonth() + 1,
-                day: dayData.day.getDate(),
-                hour: hourData.hour,
-                cameraName: config.frigate.camera_name,
-              }),
-              {
-                recording: {
-                  camera: config.frigate.camera_name,
-                  start_time: getUnixTime(startHour),
-                  end_time: getUnixTime(endHour),
-                  events: hourData.events,
-                },
-                cameraID: cameraID,
-              },
-            ),
+      .mergeInContext(viewerContext) ?? null
   );
-        }
-      }
-    }
-  }
-  // Sort the events by time (to align recordings for different cameras at the
-  // same time).
-  return children.sort(sortYoungestToOldest);
 };
 
 /**
  * Generate the media view context for a set of media children (used to set
  * seek times into each media item).
+ * @param hass The Home Assistant object.
  * @param dataManager The datamanager to use for data access.
- * @param children The media children.
+ * @param media The media.
  * @param targetTime The target time.
  * @returns The ViewContext.
  */
-export const generateMediaViewerContextForChildren = (
+export const generateMediaViewerContext = async (
+  hass: HomeAssistant,
   dataManager: DataManager,
-  children: FrigateBrowseMediaSource[],
+  media: ViewMedia[],
   targetTime: Date,
-): ViewContext => {
+): Promise<ViewContext> => {
   const seek = new Map();
-  const segmentsDataset = dataManager.recordingSegments;
   const hourStart = startOfHour(targetTime);
 
-  children.forEach((child, index) => {
-    const source = child.frigate?.recording ?? child.frigate?.event;
-    if (source && source.end_time && child.frigate?.cameraID) {
-      const start = source.start_time * 1000;
-      const end = source.end_time * 1000;
+  for (const [index, child] of media.entries()) {
+    if (!ViewMediaClassifier.isMediaWithStartEndTime(child)) {
+      continue;
+    }
+
+    const start = child.getStartTime();
+    const end = child.getEndTime();
     let seekSeconds: number | null = null;
 
-      if (targetTime.getTime() >= start && targetTime.getTime() <= end) {
-        const segments = segmentsDataset.get({
-          filter: (segment) =>
-            segment.cameraID === child.frigate?.cameraID &&
-            segment.start >= start &&
-            segment.end <= end,
-          order: sortOldestToYoungest,
-        });
+    if (targetTime >= start && targetTime <= end) {
+      const query = dataManager.generateDefaultRecordingSegmentsQueries(
+        child.getCameraID(),
+        {
+          start: start,
+          end: end,
+        },
+      )[0];
+      const segments = (await dataManager.getRecordingSegments(hass, query)).get(query);
+
+      if (segments) {
         seekSeconds = getSeekTimeInSegments(
           // Recordings start from the top of the hour.
-          child.frigate.recording ? hourStart : fromUnixTime(source.start_time),
+          child.isRecording() ? hourStart : start,
           targetTime,
-          segments,
+          segments.segments,
         );
       }
+    }
 
     if (seekSeconds !== null) {
       seek.set(index, {
@@ -229,14 +214,12 @@ export const generateMediaViewerContextForChildren = (
       });
     }
   }
-  });
   return seek.size > 0 ? { mediaViewer: { seek: seek } } : {};
 };
 
 /**
- * Find the relevant recording child given a date target.
- * @param children The FrigateBrowseMediaSource[] children. Must be sorted
- * most recent first.
+ * Find the closest matching media object.
+ * @param mediaArray The media. Must be sorted most recent first.
  * @param targetTime The target time used to find the relevant child.
  * @param cameraIDs The camera IDs to search for.
  * @param refPoint Whether to find based on the start or end of the
@@ -244,8 +227,8 @@ export const generateMediaViewerContextForChildren = (
  * the best match.
  * @returns The childindex or null if no matching child is found.
  */
-export const findChildIndex = (
-  children: FrigateBrowseMediaSource[],
+export const findClosestMediaIndex = (
+  mediaArray: ViewMedia[],
   targetTime: Date,
   cameraIDs: Set<string>,
   refPoint?: 'start' | 'end',
@@ -257,15 +240,17 @@ export const findChildIndex = (
       }
     | undefined;
 
-  for (let i = 0; i < children.length; ++i) {
-    const child = children[i];
-    if (child.frigate?.cameraID && cameraIDs.has(child.frigate.cameraID)) {
-      const source = child.frigate.event ?? child.frigate.recording;
-      if (!source?.start_time || !source?.end_time) {
+  for (let i = 0; i < mediaArray.length; ++i) {
+    const media = mediaArray[i];
+    if (
+      !cameraIDs.has(media.getCameraID()) ||
+      !ViewMediaClassifier.isMediaWithStartEndTime(media)
+    ) {
       continue;
     }
-      const startTime = fromUnixTime(source.start_time);
-      const endTime = fromUnixTime(source.end_time);
+
+    const startTime = media.getStartTime();
+    const endTime = media.getEndTime();
 
     if (startTime <= targetTime && endTime >= targetTime) {
       if (!refPoint) {
@@ -280,7 +265,6 @@ export const findChildIndex = (
       }
     }
   }
-  }
   return bestMatch ? bestMatch.index : null;
 };
 
@@ -295,7 +279,7 @@ export const findChildIndex = (
 const getSeekTimeInSegments = (
   startTime: Date,
   targetTime: Date,
-  segments: RecordingSegmentsItem[],
+  segments: RecordingSegments,
 ): number | null => {
   if (!segments.length) {
     return null;
@@ -304,13 +288,14 @@ const getSeekTimeInSegments = (
 
   // Inspired by: https://github.com/blakeblackshear/frigate/blob/release-0.11.0/web/src/routes/Recording.jsx#L27
   for (const segment of segments) {
-    if (segment.start > targetTime.getTime()) {
+    const segmentStart = fromUnixTime(segment.start_time);
+    if (segmentStart > targetTime) {
       break;
     }
-    const start =
-      segment.start < startTime.getTime() ? startTime.getTime() : segment.start;
-    const end = segment.end > targetTime.getTime() ? targetTime.getTime() : segment.end;
-    seekMilliseconds += end - start;
+    const segmentEnd = fromUnixTime(segment.end_time);
+    const start = segmentStart < startTime ? startTime : segmentStart;
+    const end = segmentEnd > targetTime ? targetTime : segmentEnd;
+    seekMilliseconds += end.getTime() - start.getTime();
   }
   return seekMilliseconds / 1000;
 };

src/utils/timeline-source.ts

@@ -0,0 +1,225 @@
+import { HomeAssistant } from 'custom-card-helpers';
+import sub from 'date-fns/sub';
+import { DataSet } from 'vis-data';
+import { IdType, TimelineItem, TimelineWindow } from 'vis-timeline/esnext';
+import { CameraConfig, ClipsOrSnapshotsOrAll } from '../types';
+import { DataManager } from './data/data-manager';
+import { EventQuery } from './data/data-types';
+import { RecordingSegment, RecordingSegments } from './frigate';
+import { capEndDate, convertRangeToCacheFriendlyTimes } from './data/data-manager-util';
+import { EventMediaQueries } from '../view';
+import { ViewMedia } from '../view-media';
+import { compressRanges, MemoryRangeSet } from './data/data-manager-range';
+import { ModifyInterface } from './basic';
+
+// Allow timeline freshness to be at least this number of seconds out of date
+// (caching times in the data-engine may increase the effective delay).
+const TIMELINE_FRESHNESS_TOLERANCE_SECONDS = 30;
+
+// Number of seconds gap allowable in order to consider two recording segments
+// to be consecutive. Some low performance cameras have trouble and without a
+// generous allowance here the timeline may be littered with individual segments
+// instead of clean recording blocks.
+const TIMELINE_RECORDING_SEGMENT_CONSECUTIVE_TOLERANCE_SECONDS = 60;
+
+export interface FrigateCardTimelineItem extends TimelineItem {
+  // Use numbers to avoid significant volumes of Date object construction (for
+  // high-quantity recording segments).
+  start: number;
+  end?: number;
+  media?: ViewMedia;
+}
+
+export class TimelineDataSource {
+  protected _dataManager: DataManager;
+  protected _dataset: DataSet<FrigateCardTimelineItem> = new DataSet();
+
+  // The ranges in which recordings have been calculated and added for.
+  protected _recordingRanges = new MemoryRangeSet();
+
+  protected _cameraIDs: Set<string>;
+  protected _mediaType: ClipsOrSnapshotsOrAll;
+
+  constructor(
+    dataManager: DataManager,
+    cameraIDs: Set<string>,
+    media: ClipsOrSnapshotsOrAll,
+  ) {
+    this._dataManager = dataManager;
+    this._cameraIDs = cameraIDs;
+    this._mediaType = media;
+  }
+
+  get dataset(): DataSet<FrigateCardTimelineItem> {
+    return this._dataset;
+  }
+
+  public clearEvents(): void {
+    this._dataset.remove(
+      this._dataset.get({
+        filter: (item) => item.type !== 'background',
+      }),
+    );
+  }
+
+  public rewriteEvent(id: IdType): void {
+    // Hack: For timeline uses of the event dataset clustering may not update
+    // unless the dataset changes, artifically update the dataset to ensure the
+    // newly selected item cannot be included in a cluster.
+
+    // Hack2: Cannot use `updateOnly` here, as vis-data loses the object
+    // prototype, see: https://github.com/visjs/vis-data/issues/997 . Instead,
+    // remove then add.
+    const item = this._dataset.get(id);
+    if (item) {
+      this._dataset.remove(id);
+      this._dataset.add(item);
+    }
+  }
+
+  public async refresh(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    window: TimelineWindow,
+  ): Promise<void> {
+    await Promise.all([
+      this._refreshEvents(hass, cameras, window),
+      this._refreshRecordings(hass, window),
+    ]);
+  }
+
+  public getTimelineEventQueries(window: TimelineWindow): EventQuery[] {
+    const _window = convertRangeToCacheFriendlyTimes(window, {
+      endCap: true,
+    });
+    return this._dataManager.generateDefaultEventQueries(this._cameraIDs, {
+      start: _window.start,
+      end: _window.end,
+      ...(this._mediaType === 'clips' && { hasClip: true }),
+      ...(this._mediaType === 'snapshots' && { hasSnapshot: true }),
+    });
+  }
+
+  protected async _refreshEvents(
+    hass: HomeAssistant,
+    cameras: Map<string, CameraConfig>,
+    window: TimelineWindow,
+  ): Promise<void> {
+    const query = new EventMediaQueries(this.getTimelineEventQueries(window));
+    const results = await this._dataManager.executeMediaQuery(hass, query);
+    for (const media of results?.getResults() ?? []) {
+      const endTime = media.getEndTime();
+      const startTime = media.getStartTime();
+      const id = media.getID(cameras.get(media.getCameraID()));
+      if (id && startTime) {
+        this._dataset.update({
+          id: id,
+          group: media.getCameraID(),
+          content: '',
+          media: media,
+          start: startTime.getTime(),
+          type: endTime ? 'range' : 'point',
+          ...(endTime && { end: endTime.getTime() }),
+        });
+      }
+    }
+  }
+
+  protected async _refreshRecordings(
+    hass: HomeAssistant,
+    window: TimelineWindow,
+  ): Promise<void> {
+    type FrigateCardTimelineItemWithEnd = ModifyInterface<
+      FrigateCardTimelineItem,
+      { end: number }
+    >;
+
+    const convertSegmentToRecording = (
+      cameraID: string,
+      segment: RecordingSegment,
+    ): FrigateCardTimelineItemWithEnd => {
+      return {
+        id: `recording-${cameraID}-${segment.id}`,
+        group: cameraID,
+        start: segment.start_time * 1000,
+        end: segment.end_time * 1000,
+        content: '',
+        type: 'background',
+      };
+    };
+
+    const getExistingRecordingsForCameraID = (
+      cameraID: string,
+    ): FrigateCardTimelineItemWithEnd[] => {
+      return this._dataset.get({
+        filter: (item) =>
+          item.type == 'background' && item.group === cameraID && item.end !== undefined,
+      }) as FrigateCardTimelineItemWithEnd[];
+    };
+
+    const deleteRecordingsForCameraID = (cameraID: string): void => {
+      this._dataset.remove(
+        this._dataset.get({
+          filter: (item) => item.type === 'background' && item.group === cameraID,
+        }),
+      );
+    };
+
+    const addRecordings = (recordings: FrigateCardTimelineItemWithEnd[]): void => {
+      this._dataset.add(recordings);
+    };
+
+    // Calculate an end date that's slightly short of the current time to allow
+    // for caching up to the freshness tolerance.
+    const end = sub(capEndDate(window.end), {
+      seconds: TIMELINE_FRESHNESS_TOLERANCE_SECONDS,
+    });
+    const hasCoverage = this._recordingRanges.hasCoverage({
+      start: window.start,
+      end: end,
+    });
+    if (hasCoverage) {
+      return;
+    }
+
+    const cacheFriendlyWindow = convertRangeToCacheFriendlyTimes(window, {
+      endCap: true,
+    });
+
+    const queries = this._dataManager.generateDefaultRecordingSegmentsQueries(
+      this._cameraIDs,
+      {
+        start: cacheFriendlyWindow.start,
+        end: cacheFriendlyWindow.end,
+      },
+    );
+
+    const results = await this._dataManager.getRecordingSegments(hass, queries);
+
+    const newSegments: Map<string, RecordingSegments> = new Map();
+    for (const [query, result] of results) {
+      let destination: RecordingSegments | undefined = newSegments.get(query.cameraID);
+      if (!destination) {
+        destination = [];
+        newSegments.set(query.cameraID, destination);
+      }
+      result.segments.forEach((segment) => destination?.push(segment));
+    }
+
+    for (const [cameraID, segments] of newSegments.entries()) {
+      const existingRecordings = getExistingRecordingsForCameraID(cameraID);
+      const mergedRecordings = existingRecordings.concat(
+        segments.map((segment) => convertSegmentToRecording(cameraID, segment)),
+      );
+      const compressedRecordings = compressRanges(
+        mergedRecordings,
+        TIMELINE_RECORDING_SEGMENT_CONSECUTIVE_TOLERANCE_SECONDS,
+      ) as FrigateCardTimelineItemWithEnd[];
+
+      deleteRecordingsForCameraID(cameraID);
+      addRecordings(compressedRecordings);
+    }
+
+    this._recordingRanges.add({ start: window.start, end: end });
+  }
+}

src/view-media.ts

@@ -0,0 +1,333 @@
+import fromUnixTime from 'date-fns/fromUnixTime';
+import isEqual from 'lodash-es/isEqual';
+import {
+  BrowseMediaSource,
+  CameraConfig,
+  FrigateEvent,
+  FrigateRecording,
+  MEDIA_TYPE_IMAGE,
+} from './types.js';
+import { ModifyInterface } from './utils/basic.js';
+import {
+  getEventMediaContentID,
+  getEventThumbnailURL,
+  getEventTitle,
+  getRecordingMediaContentID,
+  getRecordingTitle,
+} from './utils/frigate.js';
+
+export type ViewMediaType = 'clip' | 'snapshot' | 'recording';
+export type ViewMediaSourceType = FrigateEvent | FrigateRecording | BrowseMediaSource;
+
+export class ViewMediaClassifier {
+  public static isFrigateMedia(
+    media: ViewMedia,
+  ): media is FrigateEventViewMedia | FrigateRecordingViewMedia {
+    return this.isFrigateEvent(media) || this.isFrigateRecording(media);
+  }
+  public static isFrigateEvent(media: ViewMedia): media is FrigateEventViewMedia {
+    return media instanceof FrigateEventViewMedia;
+  }
+  public static isFrigateRecording(
+    media: ViewMedia,
+  ): media is FrigateRecordingViewMedia {
+    return media instanceof FrigateRecordingViewMedia;
+  }
+
+  // Typescript conveniences.
+  public static isMediaWithStartEndTime(media: ViewMedia): media is ModifyInterface<
+    ViewMedia,
+    {
+      getStartTime(): Date;
+      getEndTime(): Date;
+    }
+  > {
+    return !!media.getStartTime() && !!media.getEndTime();
+  }
+  public static isMediaWithStartTime(media: ViewMedia): media is ModifyInterface<
+    ViewMedia,
+    {
+      getStartTime(): Date;
+    }
+  > {
+    return !!media.getStartTime();
+  }
+  public static isMediaWithEndTime(media: ViewMedia): media is ModifyInterface<
+    ViewMedia,
+    {
+      getEndTime(): Date;
+    }
+  > {
+    return !!media.getEndTime();
+  }
+  public static isMediaWithID(media: ViewMedia): media is ModifyInterface<
+    ViewMedia,
+    {
+      getID(): string;
+    }
+  > {
+    return !!media.getID();
+  }
+}
+
+class ViewMediaBase<T extends ViewMediaSourceType> {
+  protected _mediaType: ViewMediaType;
+  protected _cameraID: string;
+  protected _source: T;
+
+  constructor(mediaType: ViewMediaType, cameraID: string, source: T) {
+    this._mediaType = mediaType;
+    this._cameraID = cameraID;
+    this._source = source;
+  }
+
+  public isEvent(): boolean {
+    return this._mediaType === 'clip' || this._mediaType === 'snapshot';
+  }
+  public isRecording(): boolean {
+    return this._mediaType === 'recording';
+  }
+  public isClip(): boolean {
+    return this._mediaType === 'clip';
+  }
+  public isSnapshot(): boolean {
+    return this._mediaType === 'snapshot';
+  }
+  public getContentType(): 'image' | 'video' {
+    return this._mediaType === 'snapshot' ? 'image' : 'video';
+  }
+  public getCameraID(): string {
+    return this._cameraID;
+  }
+  public getMediaType(): ViewMediaType {
+    return this._mediaType;
+  }
+  public isVideo(): boolean {
+    return this.isClip() || this.isRecording();
+  }
+  public getSource(): T {
+    return this._source;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getID(_cameraConfig?: CameraConfig): string | null {
+    return null;
+  }
+  public getStartTime(): Date | null {
+    return null;
+  }
+  public getEndTime(): Date | null {
+    return null;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getContentID(_cameraConfig?: CameraConfig): string | null {
+    return null;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getTitle(_cameraConfig?: CameraConfig): string | null {
+    return null;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getThumbnail(_cameraConfig?: CameraConfig): string | null {
+    return null;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public isGroupableWith(that: ViewMedia): boolean {
+    return (
+      this.getMediaType() === that.getMediaType() &&
+      isEqual(this.getWhere(), that.getWhere()) &&
+      isEqual(this.getWhat(), that.getWhat())
+    );
+  }
+  public isFavorite(): boolean | null {
+    return null;
+  }
+
+  // Sets the favorite attribute (if any). This purely sets the media item as a
+  // favorite in JS.
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public setFavorite(_favorite: boolean): void {
+    return;
+  }
+  public getWhat(): string[] | null {
+    return null;
+  }
+  public getWhere(): string[] | null {
+    return null;
+  }
+  public getScore(): number | null {
+    return null;
+  }
+  public getEventCount(): number | null {
+    return null;
+  }
+}
+
+// Creates a 'public interface only' version of ViewMediaBase for use elsewhere
+// (typescript struggles with the ViewMediaClassifier classification functions
+// used above if the object has data elements).
+export type ViewMedia = {
+  [P in keyof ViewMediaBase<ViewMediaSourceType>]: ViewMediaBase<ViewMediaSourceType>[P];
+};
+
+export class HomeAssistantBrowserViewMedia extends ViewMediaBase<BrowseMediaSource> {
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getID(_cameraConfig?: CameraConfig): string | null {
+    return this._source.media_content_id;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getContentID(_cameraConfig?: CameraConfig): string | null {
+    return this._source.media_content_id;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getTitle(_cameraConfig?: CameraConfig): string | null {
+    return this._source.title;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getThumbnail(_cameraConfig?: CameraConfig): string | null {
+    return this._source.thumbnail;
+  }
+}
+
+export class FrigateEventViewMedia extends ViewMediaBase<FrigateEvent> {
+  public hasClip(): boolean {
+    return !!this._source.has_clip;
+  }
+  public getClipEquivalent(): ViewMedia | null {
+    if (!this.hasClip()) {
+      return null;
+    }
+    return ViewMediaFactory.createViewMediaFromFrigateEvent(
+      'clip',
+      this._cameraID,
+      this._source,
+    );
+  }
+  public getStartTime(): Date {
+    return fromUnixTime(this._source.start_time);
+  }
+  public getEndTime(): Date | null {
+    return this._source.end_time ? fromUnixTime(this._source.end_time) : null;
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getID(_cameraConfig?: CameraConfig): string {
+    return this._source.id;
+  }
+  public getContentID(cameraConfig?: CameraConfig): string | null {
+    if (
+      !cameraConfig ||
+      !cameraConfig.frigate.client_id ||
+      !cameraConfig.frigate.camera_name
+    ) {
+      return null;
+    }
+    return getEventMediaContentID(
+      cameraConfig.frigate.client_id,
+      cameraConfig.frigate.camera_name,
+      this._source,
+      this.isClip() ? 'clips' : 'snapshots',
+    );
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getTitle(_cameraConfig?: CameraConfig): string | null {
+    return getEventTitle(this._source);
+  }
+
+  public getThumbnail(cameraConfig?: CameraConfig): string | null {
+    if (cameraConfig?.frigate.client_id) {
+      return getEventThumbnailURL(cameraConfig.frigate.client_id, this._source);
+    }
+    return null;
+  }
+  public isFavorite(): boolean | null {
+    return this._source.retain_indefinitely ?? null;
+  }
+  public setFavorite(favorite: boolean): void {
+    this._source.retain_indefinitely = favorite;
+  }
+  public getWhat(): string[] | null {
+    return [this._source.label];
+  }
+  public getWhere(): string[] | null {
+    const zones = this._source.zones;
+    return zones.length ? zones : null;
+  }
+  public getScore(): number | null {
+    return this._source.top_score;
+  }
+}
+
+export class FrigateRecordingViewMedia extends ViewMediaBase<FrigateRecording> {
+  public getID(cameraConfig?: CameraConfig): string | null {
+    // ID name is derived from the real camera name (not CameraID) since the
+    // recordings for the same camera across multiple zones will be the same and
+    // can be dedup'd from this id.
+    if (cameraConfig) {
+      return `${cameraConfig.frigate?.client_id ?? ''}/${
+        cameraConfig.frigate.camera_name ?? ''
+      }/${this._source.start_time}/${this._source.end_time}}`;
+    }
+    return null;
+  }
+  public getStartTime(): Date {
+    return fromUnixTime(this._source.start_time);
+  }
+  public getEndTime(): Date {
+    return fromUnixTime(this._source.end_time);
+  }
+  public getContentID(cameraConfig?: CameraConfig): string | null {
+    if (
+      !cameraConfig ||
+      !cameraConfig.frigate.client_id ||
+      !cameraConfig.frigate.camera_name
+    ) {
+      return null;
+    }
+    return getRecordingMediaContentID(
+      cameraConfig.frigate.client_id,
+      cameraConfig.frigate.camera_name,
+      this._source,
+    );
+  }
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  public getTitle(_cameraConfig?: CameraConfig): string | null {
+    return getRecordingTitle(this._source);
+  }
+  public getEventCount(): number {
+    return this._source.events;
+  }
+}
+
+export class ViewMediaFactory {
+  static createViewMediaFromFrigateEvent(
+    type: 'clip' | 'snapshot',
+    cameraID: string,
+    event: FrigateEvent,
+  ): ViewMedia | null {
+    if (
+      (type === 'clip' && event.has_clip) ||
+      (type === 'snapshot' && event.has_snapshot)
+    ) {
+      return new FrigateEventViewMedia(type, cameraID, event);
+    }
+    return null;
+  }
+
+  static createViewMediaFromFrigateRecording(
+    cameraID: string,
+    recording: FrigateRecording,
+  ): ViewMedia | null {
+    return new FrigateRecordingViewMedia('recording', cameraID, recording);
+  }
+
+  static createViewMediaFromBrowseMediaSource(
+    cameraID: string,
+    browseMedia: BrowseMediaSource,
+  ): ViewMedia | null {
+    return new HomeAssistantBrowserViewMedia(
+      browseMedia.media_content_type === MEDIA_TYPE_IMAGE ? 'snapshot' : 'clip',
+      cameraID,
+      browseMedia,
+    );
+  }
+}

src/view.ts

@@ -1,18 +1,50 @@
+// TODO: Do I need getMediaType below?
+// TODO: Improve data storage in data-manager to allow fetching by limit not time.
+// TODO: Live should get most recent events regardless of when they were.
+// TODO: Refactor thumbnailsControlSchema to all use the shortform for other thumbnail users beyond live.
+// TODO: Should be able to set live media to 'all' and have it work.
+// TODO: If I replace the indexdb backend with just a map / array, does it work? Might be better.
+// TODO: limit param in recordings should do something
+// TODO: Callers of all async methods of data-engine need to catch errors.
+// TODO: Search for references to frigate.js and see where it's being called outside of the dataManager. Can I collapse some of those functions in?
+// TODO: Are there elements of ViewMedia (e.g. getEventCount) that should be moved into subclasses (e.g. a recording subclass).
+// TODO: ts-prune https://camchenry.com/blog/deleting-dead-code-in-typescript
+// TODO: In MediaQueriesBase, do we need to generic? Just have T be a MediaQuery?
+// TODO: Are areEventQueries and areRecordingQueries should be in a classifier to keep with the pattern used elsewhere.
+// TODO: Callers to the creation of new views for events/recordings need to dispatch events themselves when none are found.
+// TODO: Examine how much of utils/frigate.ts can be moved into the Frigate data engine.
+// TODO: Add garbage collecting of segments not present in the recording summaries anymore.
+// TODO: Do I need to dedup recordings? (i.e. multiple zones on same camera may need to be dedup'd somewhere before returning the view). The media getID() call may be useful for this.
+// TODO: Verify that scrolling the timeline will seek forward in both Frigate recordings & events.
+// TODO: In generateMediaViewerContext there is an assumption that recordings start/end on the hour, which is true for Frigate but that assumption should be in the engine.
+// TODO: Do a fresh media query in the viewer on snapshot click, since the first query may (e.g.) only have requested events with snapshots (which would miss an event with just a clip).
+// TODO: In the viewer @click handlers should I use this.selected instead of calling carouselScrollPrevious()
+// TODO: Implement seeking when the timeline is dragged.
+// TODO: Can _timelineClickHandler be an async method in timeline-core to improve cleanliness?
+// TODO: Can _timelineRangeChangedHandler be an async method in timeline-core to improve cleanliness?
+// TODO: What should the timeline do when an event is clicked on that is not in the queryResults (or if queryResults is empty)?
+// TODO: Should the timeline data source clear events (as it currently does) when the query changes?
+// TODO: Implement gallery.
+
+import isEqual from 'lodash-es/isEqual';
+import clone from 'lodash-es/clone.js';
+import cloneDeep from 'lodash-es/cloneDeep.js';
 import { ViewContext } from 'view';
 import {
-  FrigateBrowseMediaSource,
   FrigateCardUserSpecifiedView,
   FrigateCardView,
   FRIGATE_CARD_VIEWS_USER_SPECIFIED,
   FRIGATE_CARD_VIEW_DEFAULT,
 } from './types.js';
 import { dispatchFrigateCardEvent } from './utils/basic.js';
+import { EventQuery, MediaQuery, RecordingQuery } from './utils/data/data-types.js';
+import { ViewMedia } from './view-media.js';
 
 export interface ViewEvolveParameters {
   view?: FrigateCardView;
   camera?: string;
-  target?: FrigateBrowseMediaSource | null;
-  childIndex?: number | null;
+  query?: MediaQueries | null;
+  queryResults?: MediaQueriesResults | null;
   context?: ViewContext | null;
 }
 
@@ -21,18 +53,170 @@ export interface ViewParameters extends ViewEvolveParameters {
   camera: string;
 }
 
+export class MediaQueriesBase<T extends MediaQuery> {
+  protected _queries: T[] | null = null;
+
+  protected constructor(queries?: T[]) {
+    if (queries) {
+      this._queries = queries;
+    }
+  }
+
+  public clone(): MediaQueriesBase<T> {
+    return cloneDeep(this);
+  }
+
+  public isEqual(that: MediaQueries): boolean {
+    return isEqual(this.getQueries(), that.getQueries());
+  }
+
+  public areEventQueries(): this is EventMediaQueries {
+    return this instanceof EventMediaQueries;
+  }
+
+  public areRecordingQueries(): this is RecordingMediaQueries {
+    return this instanceof RecordingMediaQueries;
+  }
+
+  public getQueries(): T[] | null {
+    return this._queries;
+  }
+
+  public setQueries(queries: T[]): void {
+    this._queries = queries;
+  }
+
+  public setQueriesTime(start: Date, end: Date) {
+    for (const query of this._queries ?? []) {
+      query.start = start;
+      query.end = end;
+    }
+  }
+}
+
+export class EventMediaQueries extends MediaQueriesBase<EventQuery> {
+  constructor(queries?: EventQuery[]) {
+    super(queries);
+  }
+
+  public convertToClipsQueries(): void {
+    for (const query of this._queries ?? []) {
+      delete query.hasSnapshot;
+      query.hasClip = true;
+    }
+  }
+
+  public clone(): EventMediaQueries {
+    return cloneDeep(this);
+  }
+}
+
+export class RecordingMediaQueries extends MediaQueriesBase<RecordingQuery> {
+  constructor(queries?: RecordingQuery[]) {
+    super(queries);
+  }
+}
+
+export type MediaQueries = EventMediaQueries | RecordingMediaQueries;
+
+export class MediaQueriesResults {
+  protected _results: ViewMedia[] | null = null;
+  protected _resultsTimestamp: Date | null = null;
+  protected _selectedIndex: number | null = null;
+
+  constructor(results?: ViewMedia[], selectedIndex?: number) {
+    if (results) {
+      this.setResults(results);
+    }
+    if (selectedIndex !== undefined) {
+      this.selectResult(selectedIndex);
+    }
+  }
+
+  public clone(): MediaQueriesResults {
+    // Shallow clone -- will reuse the same _results object (as there are no
+    // methods that support modification of the results themselves, and since
+    // changing the selectedIndex on a consistent set of results is a common
+    // operation).
+    return clone(this);
+  }
+
+  public getResults(): ViewMedia[] | null {
+    return this._results;
+  }
+  public getResultsCount(): number {
+    return this._results?.length ?? 0;
+  }
+  public hasResults(): boolean {
+    return !!this._results;
+  }
+  public setResults(results: ViewMedia[]) {
+    this._results = results;
+    this._resultsTimestamp = new Date();
+  }
+  public getResult(index?: number): ViewMedia | null {
+    if (!this._results || index === undefined) {
+      return null;
+    }
+    return this._results[index];
+  }
+  public getSelectedResult(): ViewMedia | null {
+    return this._selectedIndex === null ? null : this.getResult(this._selectedIndex);
+  }
+  public getSelectedIndex(): number | null {
+    return this._selectedIndex;
+  }
+  public hasSelectedResult(): boolean {
+    return this.getSelectedResult() !== null;
+  }
+  public resetSelectedResult(): MediaQueriesResults {
+    this._selectedIndex = null;
+    return this;
+  }
+  public getResultsTimestamp(): Date | null {
+    return this._resultsTimestamp;
+  }
+
+  public selectResult(index: number): MediaQueriesResults {
+    if (this._results && index >= 0 && index < this._results.length) {
+      this._selectedIndex = index;
+    }
+    return this;
+  }
+  public selectResultIfFound(func: (media: ViewMedia) => boolean): MediaQueriesResults {
+    for (const [index, result] of this._results?.entries() ?? []) {
+      if (func(result)) {
+        this._selectedIndex = index;
+        break;
+      }
+    }
+    return this;
+  }
+  public selectBestResult(
+    func: (media: ViewMedia[]) => number | null,
+  ): MediaQueriesResults {
+    if (this._results) {
+      const resultIndex = func(this._results);
+      if (resultIndex !== null) {
+        this._selectedIndex = resultIndex;
+      }
+    }
+    return this;
+  }
+}
+
 export class View {
   public view: FrigateCardView;
   public camera: string;
-  public target: FrigateBrowseMediaSource | null;
-  public childIndex: number | null;
+  public query: MediaQueries | null;
+  public queryResults: MediaQueriesResults | null;
   public context: ViewContext | null;
 
   constructor(params: ViewParameters) {
     this.view = params.view;
     this.camera = params.camera;
-    this.target = params.target ?? null;
-    this.childIndex = params.childIndex ?? null;
+    this.query = params.query ?? null;
+    this.queryResults = params.queryResults ?? null;
     this.context = params.context ?? null;
   }
 
@@ -71,10 +255,12 @@ export class View {
       !curr ||
       prev.view !== curr.view ||
       prev.camera !== curr.camera ||
-      // When in the live view, the target/childIndex are the events that
-      // happened in the past -- not reflective of the actual live media viewer.
+      // When in the live view, the target contains the events that happened in
+      // the past -- not reflective of the actual live media viewer.
       (curr.view !== 'live' &&
-        (prev.target !== curr.target || prev.childIndex !== curr.childIndex))
+        (prev.queryResults !== curr.queryResults ||
+          prev.queryResults?.getSelectedResult() !==
+            curr.queryResults?.getSelectedResult()))
     );
   }
 
@@ -85,8 +271,11 @@ export class View {
     return new View({
       view: this.view,
       camera: this.camera,
-      target: this.target,
-      childIndex: this.childIndex,
+      query: this.query?.clone() ?? null,
+      queryResults: this.queryResults?.clone() ?? null,
+      // target: this.target,
+      // targetIndex: this.targetIndex,
+      // targetFingerprint: this.targetFingerprint,
       context: this.context,
     });
   }
@@ -100,8 +289,11 @@ export class View {
     return new View({
       view: params.view !== undefined ? params.view : this.view,
       camera: params.camera !== undefined ? params.camera : this.camera,
-      target: params.target !== undefined ? params.target : this.target,
-      childIndex: params.childIndex !== undefined ? params.childIndex : this.childIndex,
+      query: params.query !== undefined ? params.query : this.query?.clone() ?? null,
+      queryResults:
+        params.queryResults !== undefined
+          ? params.queryResults
+          : this.queryResults?.clone() ?? null,
       context: params.context !== undefined ? params.context : this.context,
     });
   }
@@ -123,7 +315,7 @@ export class View {
    */
   public removeContext(key: keyof ViewContext): View {
     if (this.context) {
-      delete(this.context[key]);
+      delete this.context[key];
     }
     return this;
   }
@@ -207,18 +399,6 @@ export class View {
       : null;
   }
 
-  /**
-   *  Get the media item that should be played.
-   **/
-  get media(): FrigateBrowseMediaSource | null {
-    if (this.target) {
-      if (this.target.children && this.childIndex !== null) {
-        return this.target.children[this.childIndex] ?? null;
-      }
-    }
-    return null;
-  }
-
   /**
    * Dispatch an event to request a view change.
    * @param target The target dispatching the event.

yarn.lock

@@ -3167,7 +3167,7 @@ uuid@^8.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
   integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
 
-vis-data@^7.1.3:
+vis-data@^7.1.4:
   version "7.1.4"
   resolved "https://registry.yarnpkg.com/vis-data/-/vis-data-7.1.4.tgz#90e5e796a79e1901de14c0808fb32a1a0735c1dc"
   integrity sha512-usy+ePX1XnArNvJ5BavQod7YRuGQE1pjFl+pu7IS6rCom2EBoG0o1ZzCqf3l5US6MW51kYkLR+efxRbnjxNl7w==