From bce557cc2dc767628bed6aac87301a1be7c5431b Mon Sep 17 00:00:00 2001
From: rxliuli <rxliuli@gmail.com>
Date: Tue, 4 Nov 2025 05:03:50 +0800
Subject: init commit

---
 src/components/VideoPlayer.svelte | 412 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 412 insertions(+)
 create mode 100644 src/components/VideoPlayer.svelte

(limited to 'src/components/VideoPlayer.svelte')

diff --git a/src/components/VideoPlayer.svelte b/src/components/VideoPlayer.svelte
new file mode 100644
index 0000000..8012b9f
--- /dev/null
+++ b/src/components/VideoPlayer.svelte
@@ -0,0 +1,412 @@
+<script lang="ts">
+    import { intersectionObserver } from '@amp/web-app-components/src/actions/intersection-observer';
+    import MotionArtwork from '~/components/MotionArtwork.svelte';
+    import { getJet } from '~/jet';
+    import { getI18n } from '~/stores/i18n';
+    import type { Video } from '@jet-app/app-store/api/models';
+    import {
+        MetricsActionDetails,
+        MetricsActionType,
+        type MetricsActionDetailItem,
+        type MetricsActionTypeItem,
+    } from '~/constants/media-metrics';
+
+    /** HTML `id` attribute for the <video /> element */
+    export let id: string;
+
+    /** Source URL for the video, an HLS playlist ending in .m3u8 */
+    export let src: string;
+
+    /** Poster image to show while the video is loading */
+    export let poster: string | undefined;
+
+    /** If the video should play automatically when in view */
+    export let autoplay: boolean = false;
+
+    /* The whole-number percentage amount of the video needs to be in view before autoplay kicks in */
+    export let autoplayVisibilityThreshold: number = 0;
+
+    /** If the video should loop from end to start. */
+    export let loop: boolean = false;
+
+    /** If the audio should be muted on the video. */
+    export let muted: boolean = true;
+
+    /** If our controls should be shown in the video player. */
+    export let useControls: boolean = true;
+
+    /** The constructor to use for creating an Hls playback session. */
+    export let HLS: Window['Hls'] = window.Hls;
+
+    /**
+     * If we should bypass the `poster` attribute on the `video` tag, in favor of having the poster
+     * image overlaid as it's own DOM element, which covers an HLS playback bug in Safari, wherein
+     * the video is seeked to the first frame once the metadata is loaded, thus removing the poster.
+     */
+    export let shouldSuperimposePosterImage: boolean = false;
+
+    /** an optional metric template provided by jet */
+    export let metricsTemplate:
+        | Record<string, unknown>
+        | Video['templateMediaEvent'] = {};
+
+    export function play(isAutoPlay = true) {
+        videoRef?.play();
+        recordMediaEvent(
+            MetricsActionType.PLAY,
+            isAutoPlay
+                ? MetricsActionDetails.AUTOPLAY
+                : MetricsActionDetails.PLAY,
+        );
+    }
+
+    export function pause(isAutoPause = true) {
+        recordMediaEvent(
+            MetricsActionType.STOP,
+            isAutoPause
+                ? MetricsActionDetails.AUTOPAUSE
+                : MetricsActionDetails.PAUSE,
+        );
+
+        videoRef?.pause();
+    }
+
+    let isPaused: boolean = !autoplay;
+    let isMuted: boolean = muted;
+    let shouldShowReplayControl: boolean = false;
+    let shouldShowPlaybackControls: boolean = true;
+    let hasPlaybackBeenInitiated: boolean = false;
+    let videoRef: HTMLVideoElement | null = null;
+
+    const i18n = getI18n();
+    const jet = getJet();
+
+    const handleFullScreenButtonClick = () => {
+        videoRef?.requestFullscreen();
+    };
+
+    const handleReplayButtonClick = () => {
+        if (videoRef) {
+            videoRef.currentTime = 0;
+            videoRef.play();
+            shouldShowPlaybackControls = true;
+        }
+    };
+
+    const handlePlayButtonClick = () => {
+        if (isPaused) {
+            play(false);
+        } else {
+            pause(false);
+        }
+    };
+
+    const handleMuteButtonClick = () => {
+        isMuted = !isMuted;
+    };
+
+    const handleVideoEnded = () => {
+        if (!loop) {
+            shouldShowPlaybackControls = true;
+
+            if (videoRef) {
+                videoRef.currentTime = 1;
+                videoRef.pause();
+            }
+
+            recordMediaEvent(
+                MetricsActionType.STOP,
+                MetricsActionDetails.COMPLETE,
+            );
+        }
+    };
+
+    const handleVideoPlay = () => {
+        // Display the replay button after the first play
+        shouldShowReplayControl = true;
+        hasPlaybackBeenInitiated = true;
+    };
+
+    // metric events that are waiting for loadMetadata from video element
+    let queuedMetricEvents: Array<() => void> = [];
+
+    // flush any metric events once load metadata has been called
+    const flushMetricEvents = () => {
+        queuedMetricEvents.forEach((recordFn) => recordFn());
+
+        queuedMetricEvents = [];
+    };
+
+    const recordMediaEvent = (
+        actionType: MetricsActionTypeItem,
+        actionDetail: MetricsActionDetailItem,
+    ) => {
+        if (!metricsTemplate?.fields) {
+            return;
+        }
+
+        const recordEvent = () => {
+            const duration = Math.floor(videoRef?.duration ?? 0) * 1000;
+            const position = Math.min(
+                Math.floor((videoRef?.currentTime ?? 0) * 1000),
+                duration,
+            );
+            jet.recordCustomMetricsEvent({
+                ...(metricsTemplate?.fields ?? {}),
+                actionType: actionType,
+                actionDetails: actionDetail,
+                url: src,
+                duration,
+                position,
+                topic: metricsTemplate?.topic ?? '',
+            });
+        };
+
+        if (Number.isNaN(videoRef?.duration)) {
+            queuedMetricEvents.push(() => recordEvent());
+        } else {
+            recordEvent();
+        }
+    };
+
+    const isVideoPlaying = (video: HTMLVideoElement | null) => {
+        if (!video) {
+            return false;
+        }
+        return !!(
+            video.currentTime > 0 &&
+            !video.paused &&
+            !video.ended &&
+            video.readyState > 2
+        );
+    };
+
+    const intersectionObserverConfig = {
+        threshold: autoplayVisibilityThreshold,
+        callback: (isIntersectingViewport: boolean) => {
+            if (isIntersectingViewport) {
+                play();
+            } else if (isVideoPlaying(videoRef)) {
+                pause();
+            }
+        },
+    };
+</script>
+
+<div
+    class="video-container"
+    use:intersectionObserver={autoplay ? intersectionObserverConfig : undefined}
+>
+    <div class="video">
+        <MotionArtwork
+            {id}
+            {HLS}
+            {src}
+            {loop}
+            poster={!shouldSuperimposePosterImage ? poster : undefined}
+            bind:muted={isMuted}
+            bind:paused={isPaused}
+            bind:videoElement={videoRef}
+            on:play={handleVideoPlay}
+            on:ended={handleVideoEnded}
+            on:loadedmetadata={flushMetricEvents}
+        />
+    </div>
+
+    {#if shouldSuperimposePosterImage && !hasPlaybackBeenInitiated}
+        <img
+            src={poster}
+            class="fake-poster"
+            aria-hidden="true"
+            loading="lazy"
+            alt=""
+        />
+    {/if}
+
+    {#if useControls}
+        <div class="video-control">
+            {#if shouldShowReplayControl}
+                <button
+                    class="video-control-replay"
+                    aria-label={$i18n.t(
+                        'ASE.Web.AppStore.VideoPlayer.AX.Replay',
+                    )}
+                    on:click={handleReplayButtonClick}
+                >
+                    <img
+                        class="btn-img"
+                        src="/assets/images/video-control/video-control-replay.png"
+                        alt={$i18n.t('ASE.Web.AppStore.VideoPlayer.AX.Replay')}
+                        aria-hidden="true"
+                    />
+                </button>
+            {/if}
+
+            {#if shouldShowPlaybackControls}
+                <div class="video-control-playback">
+                    <button
+                        class="video-control-play"
+                        aria-label={$i18n.t(
+                            isPaused
+                                ? 'ASE.Web.AppStore.VideoPlayer.AX.Play'
+                                : 'ASE.Web.AppStore.VideoPlayer.AX.Pause',
+                        )}
+                        on:click={handlePlayButtonClick}
+                    >
+                        {#if isPaused}
+                            <img
+                                class="btn-img"
+                                src="/assets/images/video-control/video-control-play.png"
+                                alt={$i18n.t(
+                                    'ASE.Web.AppStore.VideoPlayer.AX.Play',
+                                )}
+                                aria-hidden="true"
+                            />
+                        {:else}
+                            <img
+                                class="btn-img"
+                                src="/assets/images/video-control/video-control-pause.png"
+                                alt={$i18n.t(
+                                    'ASE.Web.AppStore.VideoPlayer.AX.Pause',
+                                )}
+                                aria-hidden="true"
+                            />
+                        {/if}
+                    </button>
+
+                    <button
+                        class="video-control-unmute"
+                        aria-label={$i18n.t(
+                            isMuted
+                                ? 'ASE.Web.AppStore.VideoPlayer.AX.Unmute'
+                                : 'ASE.Web.AppStore.VideoPlayer.AX.Mute',
+                        )}
+                        on:click={handleMuteButtonClick}
+                    >
+                        {#if isMuted}
+                            <img
+                                class="btn-img"
+                                src="/assets/images/video-control/video-control-volume-muted.png"
+                                alt={$i18n.t(
+                                    'ASE.Web.AppStore.VideoPlayer.AX.Mute',
+                                )}
+                                aria-hidden="true"
+                            />
+                        {:else}
+                            <img
+                                class="btn-img"
+                                src="/assets/images/video-control/video-control-volume.png"
+                                alt={$i18n.t(
+                                    'ASE.Web.AppStore.VideoPlayer.AX.Unmute',
+                                )}
+                                aria-hidden="true"
+                            />
+                        {/if}
+                    </button>
+
+                    <button
+                        class="video-control-fullscreen"
+                        aria-label={$i18n.t(
+                            'ASE.Web.AppStore.VideoPlayer.AX.Fullscreen',
+                        )}
+                        on:click={handleFullScreenButtonClick}
+                    >
+                        <img
+                            class="btn-img"
+                            src="/assets/images/video-control/video-control-fullscreen.png"
+                            alt={$i18n.t(
+                                'ASE.Web.AppStore.VideoPlayer.AX.Fullscreen',
+                            )}
+                            aria-hidden="true"
+                        />
+                    </button>
+                </div>
+            {/if}
+        </div>
+    {/if}
+</div>
+
+<style>
+    .video-container {
+        --button-size: 32px;
+        display: grid;
+        position: relative;
+        container-type: inline-size;
+        container-name: video-container;
+        width: 100%;
+        height: 100%;
+        background-color: var(--systemQuaternary);
+    }
+
+    .video {
+        width: 100%;
+        height: 100%;
+        grid-column: 1;
+        grid-row: 1;
+        line-height: 0;
+    }
+
+    .video-control {
+        grid-column: 1;
+        grid-row: 1;
+        display: inline-flex;
+        justify-content: space-between;
+        z-index: 1;
+        align-self: end;
+        color: white;
+        margin: 0 12px 12px;
+    }
+
+    .video-control::after {
+        position: absolute;
+        content: '';
+        z-index: -1;
+        bottom: 0;
+        left: 0;
+        display: block;
+        box-sizing: border-box;
+        width: 100%;
+        height: calc(var(--button-size) * 2);
+        background: linear-gradient(
+            0deg,
+            rgb(0, 0, 0, 0.68),
+            rgb(0, 0, 0, 0.2),
+            transparent
+        );
+        mask-image: linear-gradient(360deg, #000 47%, transparent);
+    }
+
+    .video-control-playback {
+        display: inline-flex;
+        margin-inline-start: auto;
+        gap: 6px;
+    }
+
+    .btn-img {
+        height: var(--button-size);
+        width: var(--button-size);
+        border-radius: 50%;
+        border: 1px solid var(--systemQuaternary-onDark);
+        background: rgba(0, 0, 0, 0.11);
+        backdrop-filter: blur(20px);
+        object-fit: cover;
+        transition: background 105ms ease-out;
+    }
+
+    .btn-img:hover {
+        background: rgba(0, 0, 0, 0.05);
+    }
+
+    @container video-container (max-width: 500px) {
+        .btn-img {
+            --button-size: 24px;
+        }
+    }
+
+    .fake-poster {
+        width: 100%;
+        position: absolute;
+        top: 0;
+        left: 0;
+    }
+</style>
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