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path: root/src/view/com/util/post-embeds/VideoEmbedInner/VideoEmbedInnerNative.tsx
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import React, {useEffect, useRef, useState} from 'react'
import {Pressable, View} from 'react-native'
import {VideoPlayer, VideoView} from 'expo-video'

import {useVideoPlayer} from 'view/com/util/post-embeds/VideoPlayerContext'
import {android, atoms as a} from '#/alf'
import {Text} from '#/components/Typography'

export function VideoEmbedInnerNative() {
  const player = useVideoPlayer()
  const ref = useRef<VideoView>(null)

  return (
    <View style={[a.flex_1, a.relative]} collapsable={false}>
      <VideoView
        ref={ref}
        player={player}
        style={a.flex_1}
        nativeControls={true}
      />
      <Controls
        player={player}
        enterFullscreen={() => ref.current?.enterFullscreen()}
      />
    </View>
  )
}

function Controls({
  player,
  enterFullscreen,
}: {
  player: VideoPlayer
  enterFullscreen: () => void
}) {
  const [duration, setDuration] = useState(() => Math.floor(player.duration))
  const [currentTime, setCurrentTime] = useState(() =>
    Math.floor(player.currentTime),
  )

  const timeRemaining = duration - currentTime
  const minutes = Math.floor(timeRemaining / 60)
  const seconds = String(timeRemaining % 60).padStart(2, '0')

  useEffect(() => {
    const interval = setInterval(() => {
      // duration gets reset to 0 on loop
      if (player.duration) setDuration(Math.floor(player.duration))
      setCurrentTime(Math.floor(player.currentTime))
      // how often should we update the time?
      // 1000 gets out of sync with the video time
    }, 250)

    return () => {
      clearInterval(interval)
    }
  }, [player])

  if (isNaN(timeRemaining)) {
    return null
  }

  return (
    <View style={[a.absolute, a.inset_0]}>
      <View
        style={[
          {
            backgroundColor: 'rgba(0, 0, 0, 0.75',
            borderRadius: 6,
            paddingHorizontal: 6,
            paddingVertical: 3,
            position: 'absolute',
            left: 5,
            bottom: 5,
          },
        ]}
        pointerEvents="none">
        <Text
          style={[
            {color: 'white', fontSize: 12},
            a.font_bold,
            android({lineHeight: 1.25}),
          ]}>
          {minutes}:{seconds}
        </Text>
      </View>
      <Pressable
        onPress={enterFullscreen}
        style={a.flex_1}
        accessibilityLabel="Video"
        accessibilityHint="Tap to enter full screen"
        accessibilityRole="button"
      />
    </View>
  )
}