Files
advanced-camera-card/src/components/viewer.ts
T

540 lines
16 KiB
TypeScript

import {
CSSResultGroup,
LitElement,
TemplateResult,
html,
unsafeCSS,
PropertyValues,
} from 'lit';
import EmblaCarousel, { EmblaCarouselType } from 'embla-carousel';
import { HomeAssistant } from 'custom-card-helpers';
import { customElement, property } from 'lit/decorators.js';
import { until } from 'lit/directives/until.js';
import dayjs from 'dayjs';
import dayjs_custom_parse_format from 'dayjs/plugin/customParseFormat.js';
import type {
BrowseMediaNeighbors,
BrowseMediaQueryParameters,
BrowseMediaSource,
ExtendedHomeAssistant,
NextPreviousControlStyle,
} from '../types.js';
import { ResolvedMediaCache, ResolvedMediaUtil } from '../resolved-media.js';
import { localize } from '../localize/localize.js';
import {
browseMediaQuery,
dispatchErrorMessageEvent,
dispatchMediaLoadEvent,
dispatchMessageEvent,
dispatchPauseEvent,
dispatchPlayEvent,
getFirstTrueMediaChildIndex,
isTrueMedia,
} from '../common.js';
import { View } from '../view.js';
import { renderProgressIndicator } from '../components/message.js';
import './next-prev-control.js';
import viewerStyle from '../scss/viewer.scss';
// Load dayjs plugin(s).
dayjs.extend(dayjs_custom_parse_format);
@customElement('frigate-card-viewer')
export class FrigateCardViewer extends LitElement {
@property({ attribute: false })
protected hass?: HomeAssistant & ExtendedHomeAssistant;
@property({ attribute: false })
protected view?: View;
@property({ attribute: false })
protected browseMediaQueryParameters?: BrowseMediaQueryParameters;
@property({ attribute: false })
protected nextPreviousControlStyle?: NextPreviousControlStyle;
@property({ attribute: false })
protected autoplayClip?: boolean;
@property({ attribute: false })
protected resolvedMediaCache?: ResolvedMediaCache;
protected render(): TemplateResult | void {
return html`${until(this._render(), renderProgressIndicator())}`;
}
/**
* Resolve all the given media for a target.
* @param target The target to resolve media from.
* @returns True if the resolutions were all error free.
*/
protected async _resolveAllMediaForTarget(target: BrowseMediaSource): Promise<boolean> {
if (!this.hass) {
return false;
}
let errorFree = true;
for (let i = 0; target.children && i < (target.children || []).length; ++i) {
if (isTrueMedia(target.children[i])) {
errorFree &&= !!(await ResolvedMediaUtil.resolveMedia(
this.hass,
target.children[i],
this.resolvedMediaCache,
));
}
}
return errorFree;
}
/**
* Asyncronously render the element.
* @returns A template to render.
*/
protected async _render(): Promise<TemplateResult | void> {
if (!this.hass || !this.view || !this.browseMediaQueryParameters) {
return html``;
}
let autoplay = true;
let view = this.view;
if (!view.target) {
let parent: BrowseMediaSource | null = null;
try {
parent = await browseMediaQuery(this.hass, this.browseMediaQueryParameters);
} catch (e) {
return dispatchErrorMessageEvent(this, (e as Error).message);
}
const childIndex = getFirstTrueMediaChildIndex(parent);
if (!parent || !parent.children || childIndex == null) {
return dispatchMessageEvent(
this,
this.view.is('clip')
? localize('common.no_clip')
: localize('common.no_snapshot'),
this.view.is('clip') ? 'mdi:filmstrip-off' : 'mdi:camera-off',
);
}
view = new View({
view: this.view.view,
target: parent,
childIndex: childIndex,
});
// In this block, no clip has been manually selected, so this is loading
// the most recent clip on card load. In this mode, autoplay of the clip
// may be disabled by configuration. If does not make sense to disable
// autoplay when the user has explicitly picked an event to play in the
// gallery.
autoplay = this.autoplayClip ?? true;
}
if (view.target && !(await this._resolveAllMediaForTarget(view.target))) {
return dispatchErrorMessageEvent(this, localize('error.could_not_resolve'));
}
return html` <frigate-card-viewer-core
.view=${view}
.nextPreviousControlStyle=${this.nextPreviousControlStyle}
.resolvedMediaCache=${this.resolvedMediaCache}
.autoplayClip=${autoplay}
.hass=${this.hass}
.browseMediaQueryParameters=${this.browseMediaQueryParameters}
>
</frigate-card-viewer-core>`;
}
/**
* Get element styles.
*/
static get styles(): CSSResultGroup {
return unsafeCSS(viewerStyle);
}
}
@customElement('frigate-card-viewer-core')
export class FrigateCardViewerCore extends LitElement {
@property({ attribute: false })
protected view?: View;
@property({ attribute: false })
protected nextPreviousControlStyle?: NextPreviousControlStyle;
@property({ attribute: false })
protected resolvedMediaCache?: ResolvedMediaCache;
@property({ attribute: false })
protected autoplayClip?: boolean;
@property({ attribute: false })
protected hass?: HomeAssistant & ExtendedHomeAssistant;
@property({ attribute: false })
protected browseMediaQueryParameters?: BrowseMediaQueryParameters;
// Media carousel object.
protected _carousel?: EmblaCarouselType;
protected _loadedCarousel = false;
// Mapping of slide # to BrowseMediaSource child #.
// (Folders are not media items that can be rendered).
protected _slideToChild: Record<number, number> = {};
/**
* 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 (!this._loadedCarousel) {
this.updateComplete.then(() => {
this._loadCarousel();
});
}
}
/**
* Load the carousel with "slides" (clips or snapshots).
*/
protected _loadCarousel(): void {
const carouselNode = this.renderRoot.querySelector(
'.embla__viewport',
) as HTMLElement;
if (carouselNode) {
this._loadedCarousel = true;
// Start the carousel on the selected child number.
const startIndex = Number(
Object.keys(this._slideToChild).find(
(key) => this._slideToChild[key] === this.view?.childIndex,
),
);
this._carousel = EmblaCarousel(carouselNode, {
startIndex: isNaN(startIndex) ? undefined : startIndex,
});
this._carousel.on('select', this._slideSelectHandler.bind(this));
}
}
/**
* Get the event start time from a media object.
* @param browseMedia The media object to extract the start time from.
* @returns The start time in unix/epoch time, or null if it cannot be determined.
*/
protected _extractEventStartTimeFromBrowseMedia(
browseMedia: BrowseMediaSource,
): number | null {
// Example: 2021-08-27 20:57:22 [10s, Person 76%]
const result = browseMedia.title.match(/^(?<iso_datetime>.+) \[/);
if (result && result.groups) {
const iso_datetime_str = result.groups['iso_datetime'];
if (iso_datetime_str) {
const iso_datetime = dayjs(iso_datetime_str, 'YYYY-MM-DD HH:mm:ss', true);
if (iso_datetime.isValid()) {
return iso_datetime.unix();
}
}
}
return null;
}
/**
* Get the previous and next true media items from the current view.
* @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 === undefined
) {
return 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,
};
}
/**
* Get a clip view that matches a given snapshot. Includes clips within the
* same range as the current view.
* @param snapshot The snapshot to find a matching clip for.
* @returns The view that would show the matching clip.
*/
protected async _findRelatedClipView(
snapshot: BrowseMediaSource,
): Promise<View | null> {
if (!this.hass ||
!this.view ||
!this.view.target ||
!this.view.target.children ||
!this.view.target.children.length ||
!this.browseMediaQueryParameters) {
return null;
}
const snapshotStartTime = this._extractEventStartTimeFromBrowseMedia(snapshot);
if (!snapshotStartTime) {
return 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, 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)) {
continue;
}
const startTime = this._extractEventStartTimeFromBrowseMedia(child);
if (startTime && (earliest === null || startTime < earliest)) {
earliest = startTime;
}
if (startTime && (latest === null || startTime > latest)) {
latest = startTime;
}
}
if (!earliest || !latest) {
return null;
}
let clips: BrowseMediaSource | null;
try {
clips = await browseMediaQuery(this.hass, {
...this.browseMediaQueryParameters,
mediaType: 'clips',
before: latest,
after: earliest,
});
} catch (e) {
// This is best effort.
return null
}
console.info(clips);
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 = this._extractEventStartTimeFromBrowseMedia(child);
if (clipStartTime && clipStartTime === snapshotStartTime) {
return new View({
view: 'clip',
target: clips,
childIndex: i,
previous: this.view
});
}
}
return null;
}
/**
* Handle the user selecting a new slide in the carousel.
*/
protected _slideSelectHandler(): void {
if (!this._carousel || !this.view) {
return;
}
// Update the childIndex in the view (without re-render)
const slidesInView = this._carousel.slidesInView(true);
if (slidesInView.length) {
const childIndex = this._slideToChild[slidesInView[0]];
if (childIndex !== undefined) {
// Update the currently live view in place.
this.view.childIndex = childIndex;
this.requestUpdate();
}
}
}
/**
* Handle a next/previous control interaction.
* @param direction The direction requested, previous or next.
*/
protected _nextPreviousHandler(direction: 'previous' | 'next'): void {
console.info(`next/prev handler: ${direction}`);
if (direction == 'previous') {
this._carousel?.scrollPrev();
} else if (direction == 'next') {
this._carousel?.scrollNext();
}
}
/**
* Render the element.
* @returns A template to display to the user.
*/
protected render(): TemplateResult | void {
if (
!this.view ||
!this.view.target ||
!this.view.target.children ||
!this.view.target.children.length ||
this.view.childIndex === undefined ||
!this.resolvedMediaCache
) {
return html``;
}
const slides: TemplateResult[] = [];
this._slideToChild = {};
for (let i = 0; i < this.view.target.children?.length; ++i) {
const slide = this._renderMediaItem(this.view.target.children[i]);
if (slide) {
this._slideToChild[slides.length] = i;
slides.push(slide);
}
}
const neighbors = this._getMediaNeighbors();
return html`<div class="container">
${neighbors && neighbors.previous
? html`<frigate-card-next-previous-control
.direction=${'previous'}
.controlStyle=${this.nextPreviousControlStyle}
.thumbnail=${neighbors.previous.thumbnail}
.title=${neighbors.previous.title}
@click=${() => this._nextPreviousHandler('previous')}
></frigate-card-next-previous-control>`
: ``}
<div class="embla">
<div class="embla__viewport">
<div class="embla__container">${slides}</div>
</div>
</div>
${neighbors && neighbors.next
? html`<frigate-card-next-previous-control
.direction=${'next'}
.controlStyle=${this.nextPreviousControlStyle}
.thumbnail=${neighbors.next.thumbnail}
.title=${neighbors.next.title}
@click=${() => this._nextPreviousHandler('next')}
></frigate-card-next-previous-control>`
: ``}
</div>`;
}
/**
* Render a given media item.
* @param mediaToRender The media item to render.
* @returns A template or void if the item could not be rendered.
*/
protected _renderMediaItem(mediaToRender: BrowseMediaSource): TemplateResult | void {
// media that can be expanded (folders) cannot be resolved to a single media
// item, skip them.
if (!this.view || !isTrueMedia(mediaToRender)) {
return;
}
const resolvedMedia = this.resolvedMediaCache?.get(mediaToRender.media_content_id);
if (!resolvedMedia) {
return;
}
return html`
<div class="embla__slide">
${this.view.is('clip')
? resolvedMedia?.mime_type.toLowerCase() == 'application/x-mpegurl'
? html`<frigate-card-ha-hls-player
.hass=${this.hass}
.url=${resolvedMedia.url}
title="${mediaToRender.title}"
muted
controls
playsinline
allow-exoplayer
?autoplay="${this.autoplayClip}"
>
</frigate-card-ha-hls-player>`
: html`<video
title="${mediaToRender.title}"
muted
controls
playsinline
?autoplay="${this.autoplayClip}"
@loadedmetadata="${(e) => dispatchMediaLoadEvent(this, e)}"
@play=${() => dispatchPlayEvent(this)}
@pause=${() => dispatchPauseEvent(this)}
>
<source src="${resolvedMedia.url}" type="${resolvedMedia.mime_type}" />
</video>`
: html`<img
src=${resolvedMedia.url}
title="${mediaToRender.title}"
@click=${() => {
if (this._carousel?.clickAllowed()) {
this._findRelatedClipView(mediaToRender).then((view) => {
if (view) {
view.dispatchChangeEvent(this);
}
});
}
}}
@load=${(e) => {
dispatchMediaLoadEvent(this, e);
}}
/>`}
</div>
`;
}
/**
* Get element styles.
*/
static get styles(): CSSResultGroup {
return unsafeCSS(viewerStyle);
}
}