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import React, {useCallback, useEffect, useId, useState} from 'react'
import {View} from 'react-native'
import {ImageBackground} from 'expo-image'
import {PlayerError, VideoPlayerStatus} from 'expo-video'
import {AppBskyEmbedVideo} from '@atproto/api'
import {msg, Trans} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {clamp} from '#/lib/numbers'
import {useAutoplayDisabled} from 'state/preferences'
import {VideoEmbedInnerNative} from '#/view/com/util/post-embeds/VideoEmbedInner/VideoEmbedInnerNative'
import {atoms as a} from '#/alf'
import {Button} from '#/components/Button'
import {useIsWithinMessage} from '#/components/dms/MessageContext'
import {Loader} from '#/components/Loader'
import {PlayButtonIcon} from '#/components/video/PlayButtonIcon'
import {VisibilityView} from '../../../../../modules/expo-bluesky-swiss-army'
import {ErrorBoundary} from '../ErrorBoundary'
import {useActiveVideoNative} from './ActiveVideoNativeContext'
import * as VideoFallback from './VideoEmbedInner/VideoFallback'
interface Props {
embed: AppBskyEmbedVideo.View
}
export function VideoEmbed({embed}: Props) {
const [key, setKey] = useState(0)
const renderError = useCallback(
(error: unknown) => (
<VideoError error={error} retry={() => setKey(key + 1)} />
),
[key],
)
let aspectRatio = 16 / 9
if (embed.aspectRatio) {
const {width, height} = embed.aspectRatio
aspectRatio = width / height
aspectRatio = clamp(aspectRatio, 1 / 1, 3 / 1)
}
return (
<View
style={[
a.w_full,
a.rounded_sm,
a.overflow_hidden,
{aspectRatio},
{backgroundColor: 'black'},
a.my_xs,
]}>
<ErrorBoundary renderError={renderError} key={key}>
<InnerWrapper embed={embed} />
</ErrorBoundary>
</View>
)
}
function InnerWrapper({embed}: Props) {
const {_} = useLingui()
const {activeSource, activeViewId, setActiveSource, player} =
useActiveVideoNative()
const viewId = useId()
const [playerStatus, setPlayerStatus] = useState<
VideoPlayerStatus | 'paused'
>('paused')
const [isMuted, setIsMuted] = useState(player.muted)
const [isFullscreen, setIsFullscreen] = React.useState(false)
const [timeRemaining, setTimeRemaining] = React.useState(0)
const isWithinMessage = useIsWithinMessage()
const disableAutoplay = useAutoplayDisabled() || isWithinMessage
const isActive = embed.playlist === activeSource && activeViewId === viewId
// There are some different loading states that we should pay attention to and show a spinner for
const isLoading =
isActive &&
(playerStatus === 'waitingToPlayAtSpecifiedRate' ||
playerStatus === 'loading')
// This happens whenever the visibility view decides that another video should start playing
const showOverlay = !isActive || isLoading || playerStatus === 'paused'
// send error up to error boundary
const [error, setError] = useState<Error | PlayerError | null>(null)
if (error) {
throw error
}
useEffect(() => {
if (isActive) {
// eslint-disable-next-line @typescript-eslint/no-shadow
const volumeSub = player.addListener('volumeChange', ({isMuted}) => {
setIsMuted(isMuted)
})
const timeSub = player.addListener(
'timeRemainingChange',
secondsRemaining => {
setTimeRemaining(secondsRemaining)
},
)
const statusSub = player.addListener(
'statusChange',
(status, oldStatus, playerError) => {
setPlayerStatus(status)
if (status === 'error') {
setError(playerError ?? new Error('Unknown player error'))
}
if (status === 'readyToPlay' && oldStatus !== 'readyToPlay') {
player.play()
}
},
)
return () => {
volumeSub.remove()
timeSub.remove()
statusSub.remove()
}
}
}, [player, isActive, disableAutoplay])
// The source might already be active (for example, if you are scrolling a list of quotes and its all the same
// video). In those cases, just start playing. Otherwise, setting the active source will result in the video
// start playback immediately
const startPlaying = (ignoreAutoplayPreference: boolean) => {
if (disableAutoplay && !ignoreAutoplayPreference) {
return
}
if (isActive) {
player.play()
} else {
setActiveSource(embed.playlist, viewId)
}
}
const onVisibilityStatusChange = (isVisible: boolean) => {
// When `isFullscreen` is true, it means we're actually still exiting the fullscreen player. Ignore these change
// events
if (isFullscreen) {
return
}
if (isVisible) {
startPlaying(false)
} else {
// Clear the active source so the video view unmounts when autoplay is disabled. Otherwise, leave it mounted
// until it gets replaced by another video
if (disableAutoplay) {
setActiveSource(null, null)
} else {
player.muted = true
if (player.playing) {
player.pause()
}
}
}
}
return (
<VisibilityView enabled={true} onChangeStatus={onVisibilityStatusChange}>
{isActive ? (
<VideoEmbedInnerNative
embed={embed}
timeRemaining={timeRemaining}
isMuted={isMuted}
isFullscreen={isFullscreen}
setIsFullscreen={setIsFullscreen}
/>
) : null}
<ImageBackground
source={{uri: embed.thumbnail}}
accessibilityIgnoresInvertColors
style={[
{
position: 'absolute',
top: 0,
left: 0,
right: 0,
bottom: 0,
backgroundColor: 'transparent', // If you don't add `backgroundColor` to the styles here,
// the play button won't show up on the first render on android 🥴😮💨
display: showOverlay ? 'flex' : 'none',
},
]}
cachePolicy="memory-disk" // Preferring memory cache helps to avoid flicker when re-displaying on android
>
<Button
style={[a.flex_1, a.align_center, a.justify_center]}
onPress={() => startPlaying(true)}
label={_(msg`Play video`)}
color="secondary">
{isLoading ? (
<View
style={[
a.rounded_full,
a.p_xs,
a.align_center,
a.justify_center,
{backgroundColor: 'rgba(0,0,0,0.5)'},
]}>
<Loader size="2xl" style={{color: 'white'}} />
</View>
) : (
<PlayButtonIcon />
)}
</Button>
</ImageBackground>
</VisibilityView>
)
}
function VideoError({retry}: {error: unknown; retry: () => void}) {
return (
<VideoFallback.Container>
<VideoFallback.Text>
<Trans>
An error occurred while loading the video. Please try again later.
</Trans>
</VideoFallback.Text>
<VideoFallback.RetryButton onPress={retry} />
</VideoFallback.Container>
)
}
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