import { forwardRef, useCallback, useEffect, useImperativeHandle, useRef, useState } from 'react'
import Hls from 'hls.js'
import { Loader2, Maximize, Minimize, Pause, Play, Volume2, VolumeX } from 'lucide-react'
import type { Chapter, LineInfo, QualityInfo } from '@/api/streams'

export interface VideoPlayerHandle {
  seek: (seconds: number) => void
  play: () => Promise<void>
  pause: () => void
  getVideo: () => HTMLVideoElement | null
}

interface VideoPlayerProps {
  live: boolean
  replayUrl?: string
  lines: LineInfo[]
  qualities: QualityInfo[]
  activeLine: string
  activeQuality: string
  autoQuality?: string
  chapters?: Chapter[]
  onLineChange: (line: string) => void
  onQualityChange: (quality: string) => void
  onError?: (message: string) => void
}

function formatTime(seconds: number) {
  if (!Number.isFinite(seconds)) return '00:00'
  const value = Math.max(0, Math.floor(seconds))
  const hours = Math.floor(value / 3600)
  const minutes = Math.floor((value % 3600) / 60)
  const secs = value % 60
  return hours > 0
    ? `${hours}:${String(minutes).padStart(2, '0')}:${String(secs).padStart(2, '0')}`
    : `${String(minutes).padStart(2, '0')}:${String(secs).padStart(2, '0')}`
}

/** "2.5Mbps" / "600kbps" for the source tier, whose rate is only known at runtime. */
function formatBitrate(value: number) {
  if (!Number.isFinite(value) || value <= 0) return ''
  return value >= 1000000 ? `${(value / 1000000).toFixed(1)}Mbps` : `${Math.round(value / 1000)}kbps`
}

const VideoPlayer = forwardRef<VideoPlayerHandle, VideoPlayerProps>(function VideoPlayer(
  {
    live,
    replayUrl,
    lines,
    qualities,
    activeLine,
    activeQuality,
    autoQuality,
    chapters = [],
    onLineChange,
    onQualityChange,
    onError,
  },
  ref,
) {
  const rootRef = useRef<HTMLDivElement>(null)
  const videoRef = useRef<HTMLVideoElement>(null)
  const hlsRef = useRef<Hls | null>(null)
  const [loading, setLoading] = useState(false)
  const [playing, setPlaying] = useState(false)
  const [currentTime, setCurrentTime] = useState(0)
  const [duration, setDuration] = useState(0)
  const [buffered, setBuffered] = useState(0)
  const [volume, setVolume] = useState(1)
  const [muted, setMuted] = useState(false)
  const [fullscreen, setFullscreen] = useState(false)
  // Autoplay gate: a browser that refuses to start playback on its own can only
  // be unblocked by a real click, so the prompt has to be impossible to miss.
  // `ready` keeps it hidden until there is actually something to play.
  const [needsGesture, setNeedsGesture] = useState(false)
  const [ready, setReady] = useState(false)
  // Set when autoplay only succeeded after muting, so the click that clears the
  // gate knows to restore sound.
  const [mutedAttempt, setMutedAttempt] = useState(false)
  // Measured size/bitrate of the source ("原画") stream. Nothing about it is known
  // up front, and reading it off a different rendition would mislabel the option,
  // so it is only filled in while the source playlist is the one playing.
  const [sourceMeta, setSourceMeta] = useState('')
  const sourceMetaRef = useRef({ isSource: false })
  const sourceBitrateRef = useRef(0)
  // Controls start visible, then fade after inactivity. Hiding them purely on
  // :hover meant entering fullscreen showed a bare video with no controls until
  // the pointer happened to move.
  const [controlsVisible, setControlsVisible] = useState(true)
  const hideTimerRef = useRef<number | null>(null)

  // Refresh the source-option label from what is actually decoding. A component
  // function so both the once-registered media listeners and the source-switching
  // effect can call it.
  const measureSource = useCallback(() => {
    const video = videoRef.current
    if (!video || !sourceMetaRef.current.isSource) return
    setSourceMeta(
      [formatBitrate(sourceBitrateRef.current), video.videoWidth && video.videoHeight ? `${video.videoWidth}×${video.videoHeight}` : '']
        .filter(Boolean)
        .join(' · '),
    )
  }, [])

  // Attempt autoplay, silently muting first if the browser only allows muted
  // playback. Rejections other than NotAllowedError (AbortError from a source
  // swap, etc.) leave the element alone — the 'canplay' handler covers those.
  const attemptAutoplay = useCallback(async (video: HTMLVideoElement) => {
    try {
      await video.play()
      setNeedsGesture(false)
    } catch (error) {
      if ((error as DOMException)?.name === 'NotAllowedError' && !video.muted) {
        video.muted = true
        setMuted(true)
        setMutedAttempt(true)
        try {
          // Muted playback is granted, so the stream starts — but silently. Keep
          // the prompt up until the viewer interacts, both to offer the sound and
          // so the muted state is never mistaken for a broken stream.
          await video.play()
          setNeedsGesture(true)
          return
        } catch {
          // fall through to the gate
        }
      } else if ((error as DOMException)?.name !== 'NotAllowedError') {
        return
      }
      if (!video.paused) return
      setNeedsGesture(true)
    }
  }, [])

  const unmute = useCallback(() => {
    const video = videoRef.current
    if (!video) return
    video.muted = false
    if (video.volume === 0) video.volume = 1
    setMuted(false)
    setMutedAttempt(false)
  }, [])

  // The click that unblocks playback also has to unmute — otherwise the viewer
  // sees a "muted" state they never asked for.
  const resolveGate = () => {
    const video = videoRef.current
    setNeedsGesture(false)
    if (!video) return
    if (mutedAttempt) unmute()
    void video.play().catch(() => setNeedsGesture(true))
  }

  // Muted autoplay always succeeds, so "we muted it to get playing at all" is a
  // silent state, and the stream sounds broken until someone notices the small
  // speaker icon. This deliberately restores sound from ONE place — the video's
  // own click handler below — rather than a window-level gesture listener: a
  // window listener fires on pointerdown, which runs before React's click handler,
  // so by then mutedAttempt was already false and the click toggled playback off
  // instead of unmuting. One owner, one ordering.

  useImperativeHandle(
    ref,
    () => ({
      seek(seconds) {
        // Live playlists only retain a short window, so seeking far back lands
        // outside the buffer and stalls. Clamp to what is actually available.
        const video = videoRef.current
        if (!video) return
        const target = Math.max(0, seconds)
        if (live && video.buffered.length) {
          const start = video.buffered.start(0)
          if (target < start) {
            video.currentTime = start
            return
          }
        }
        video.currentTime = target
      },
      async play() {
        await videoRef.current?.play()
      },
      pause() {
        videoRef.current?.pause()
      },
      getVideo() {
        return videoRef.current
      },
    }),
    [],
  )

  // 基础事件监听
  useEffect(() => {
    const video = videoRef.current
    if (!video) return

    const update = () => {
      setCurrentTime(video.currentTime || 0)
      setDuration(Number.isFinite(video.duration) ? video.duration : 0)
      const end = video.buffered.length ? video.buffered.end(video.buffered.length - 1) : 0
      setBuffered(end)
    }
    const onPlay = () => setPlaying(true)
    const onPause = () => setPlaying(false)
    const onWaiting = () => setLoading(true)
    const onPlaying = () => {
      setLoading(false)
      setNeedsGesture(false)
      setMuted(video.muted)
    }
    const onCanPlay = () => {
      setLoading(false)
      setReady(true)
      // Data is in and the element still is not playing: autoplay either lost the
      // race against the previous source or was refused, so prompt the viewer.
      if (video.paused) setNeedsGesture(true)
    }
    const onVolumeChange = () => {
      setVolume(video.volume)
      setMuted(video.muted)
      if (!video.muted) setMutedAttempt(false)
    }
    const onResize = () => measureSource()
    const onErrorEvent = () => {
      setLoading(false)
      const error = video.error
      let msg = '视频播放出错'
      if (error) {
        switch (error.code) {
          case 1:
            msg = '视频加载中止'
            break
          case 2:
            msg = '网络错误'
            break
          case 3:
            msg = '视频解码失败'
            break
          case 4:
            msg = '视频格式不支持或未找到'
            break
          default:
            msg = `未知错误 (${error.code})`
        }
        if (error.message) msg += `: ${error.message}`
      }
      onError?.(msg)
    }

    video.addEventListener('timeupdate', update)
    video.addEventListener('durationchange', update)
    video.addEventListener('progress', update)
    video.addEventListener('play', onPlay)
    video.addEventListener('pause', onPause)
    video.addEventListener('volumechange', onVolumeChange)
    video.addEventListener('waiting', onWaiting)
    video.addEventListener('playing', onPlaying)
    video.addEventListener('canplay', onCanPlay)
    video.addEventListener('resize', onResize)
    video.addEventListener('loadedmetadata', onResize)
    video.addEventListener('error', onErrorEvent)

    return () => {
      video.removeEventListener('timeupdate', update)
      video.removeEventListener('durationchange', update)
      video.removeEventListener('progress', update)
      video.removeEventListener('play', onPlay)
      video.removeEventListener('pause', onPause)
      video.removeEventListener('volumechange', onVolumeChange)
      video.removeEventListener('waiting', onWaiting)
      video.removeEventListener('playing', onPlaying)
      video.removeEventListener('canplay', onCanPlay)
      video.removeEventListener('resize', onResize)
      video.removeEventListener('loadedmetadata', onResize)
      video.removeEventListener('error', onErrorEvent)
    }
  }, [onError, measureSource])

  // 全屏监听
  useEffect(() => {
    const listener = () => {
      setFullscreen(document.fullscreenElement === rootRef.current)
      setControlsVisible(true)
    }
    document.addEventListener('fullscreenchange', listener)
    // Older WebKit (iOS Safari) reports video fullscreen through its own event.
    const video = videoRef.current
    const onWebkitBegin = () => setFullscreen(true)
    const onWebkitEnd = () => setFullscreen(false)
    video?.addEventListener('webkitbeginfullscreen', onWebkitBegin)
    video?.addEventListener('webkitendfullscreen', onWebkitEnd)
    return () => {
      document.removeEventListener('fullscreenchange', listener)
      video?.removeEventListener('webkitbeginfullscreen', onWebkitBegin)
      video?.removeEventListener('webkitendfullscreen', onWebkitEnd)
    }
  }, [])

  // Fade the controls out after a few idle seconds, but never while paused —
  // a paused player with no controls looks broken.
  const scheduleHide = useCallback(() => {
    if (hideTimerRef.current) window.clearTimeout(hideTimerRef.current)
    hideTimerRef.current = window.setTimeout(() => {
      if (!videoRef.current?.paused) setControlsVisible(false)
    }, 3000)
  }, [])

  const revealControls = useCallback(() => {
    setControlsVisible(true)
    scheduleHide()
  }, [scheduleHide])

  useEffect(() => {
    if (!playing) setControlsVisible(true)
    return () => {
      if (hideTimerRef.current) window.clearTimeout(hideTimerRef.current)
    }
  }, [playing])

  // 切换源并自动播放
  useEffect(() => {
    const video = videoRef.current
    if (!video) return
    const controller = new AbortController()

    hlsRef.current?.destroy()
    hlsRef.current = null
    video.removeAttribute('src')
    video.load()
    setLoading(Boolean(live || replayUrl))
    // A new source has to prove itself playable again before autoplay is judged,
    // and the old source's measurements must not be attributed to it.
    setReady(false)
    setMutedAttempt(false)
    setSourceMeta('')
    sourceMetaRef.current = { isSource: false }
    sourceBitrateRef.current = 0
    onError?.('')

    if (!live && replayUrl) {
      video.src = replayUrl
      video.load()
      void attemptAutoplay(video)
    } else if (live) {
      const line = lines.find((item) => item.node_id === activeLine)
      // "自动" resolves to the rendition the owner's ladder picked. Each quality URL
      // is a single-rendition media playlist, so this label is the only thing
      // selecting a rendition — falling through to line.url would request a master
      // playlist that the transcoder never writes (the line's own url is bare
      // /hls/<key>/index.m3u8, which only MediaMTX itself could have served).
      const label = activeQuality === 'auto' ? autoQuality : activeQuality
      const quality = line?.qualities?.find((item) => item.label === label)
      const source = quality?.url || line?.qualities?.[0]?.url || line?.url || line?.unicast_fallback
      // The source rendition is the one advertised without dimensions, so its
      // metadata is measured from the media rather than read off the API.
      const sourceLabel = qualities.find((item) => !item.width || !item.height)?.label
      // Every quality URL points at a single-rendition playlist, so no level list
      // exists to name a level from the manifest; the selection decides it.
      sourceMetaRef.current = { isSource: Boolean(sourceLabel) && label === sourceLabel }
      const onFallbackLoaded = () => {
        setLoading(false)
        sourceBitrateRef.current = 0
        measureSource()
      }
      if (!source) {
        setLoading(false)
        onError?.('当前没有可用的播放地址')
      } else if (Hls.isSupported()) {
        // Buffering is the thing to avoid; chase latency only after that. hls.js
        // measures latency to its own target rather than to the segment edge, so
        // anything set here (liveSyncDurationCount, rate) has to be interpreted in
        // its terms or the player and the UI disagree about what "behind" means.
        //
        // Deliberately NOT enabled, all for the same reason — each pulls the target
        // latency down to a single 4s segment, so playback races the encoder and
        // re-buffers at the end of every segment:
        //   lowLatencyMode: true      target drops to the last *partial* segment
        //   liveSyncDurationCount: 1  target = exactly one segment
        //   maxLiveSyncPlaybackRate   speeds playback up to 1.5x to hold that
        //   backBufferLength: 0       nothing behind the playhead to survive a stall
        // The default three-segment (~12s) cushion is what keeps playback smooth.
        const hls = new Hls({
          enableWorker: true,
          // Keeps recent segments available locally, so a brief stall is served
          // from the buffer instead of going back to the network.
          backBufferLength: 30,
        })
        hlsRef.current = hls
        hls.loadSource(source)
        hls.attachMedia(video)
        hls.on(Hls.Events.MANIFEST_PARSED, () => {
          setLoading(false)
          // For live, anchors playback to the end of the sliding window so a new
          // viewer starts at the live edge instead of the oldest retained segment.
          hls.startLoad(live ? -1 : 0)
          void attemptAutoplay(video)
        })
        // A single-rendition playlist has exactly one level and no name, so the
        // selection made above is what decides whether this is the source tier.
        // Only refresh the measured bitrate/size here; do not re-answer that.
        hls.on(Hls.Events.LEVEL_SWITCHED, (_event, data) => {
          sourceBitrateRef.current = hls.levels?.[data.level]?.bitrate || 0
          measureSource()
        })
        // The API is the authority on which rendition a label is; a manifest with no
        // level names cannot override it. This only covers a fallback playlist whose
        // rendition list we never received.
        hls.on(Hls.Events.LEVEL_LOADED, (_event, data) => {
          if (data.details.live && !qualities.length) onFallbackLoaded()
        })
        hls.on(Hls.Events.ERROR, (_event, data) => {
          if (data.fatal) {
            setLoading(false)
            onError?.('播放流加载失败，请切换线路或稍后重试')
          }
        })
      } else if (video.canPlayType('application/vnd.apple.mpegurl')) {
        video.src = source
        video.load()
        void video
          .play()
          .then(onFallbackLoaded)
          .catch(() => {
            if (video.readyState >= 3) onFallbackLoaded()
            else setNeedsGesture(true)
          })
      } else {
        setLoading(false)
        onError?.('当前浏览器不支持 HLS 播放')
      }
    }

    return () => {
      controller.abort()
      hlsRef.current?.destroy()
      hlsRef.current = null
    }
  }, [activeLine, activeQuality, autoQuality, lines, live, onError, replayUrl, attemptAutoplay, measureSource])

  const togglePlayback = () => {
    const video = videoRef.current
    if (!video) return
    if (video.paused) {
      setNeedsGesture(false)
      void video.play().catch(() => setNeedsGesture(true))
      return
    }
    // Live cannot be paused: there is no seekable timeline behind the playhead, so
    // pausing just parks the viewer further and further behind a stream that keeps
    // running. Resuming is still offered (autoplay may have been blocked), but
    // nothing here ever stops a live stream.
    if (!live) video.pause()
  }

  const toggleMute = () => {
    const video = videoRef.current
    if (!video) return
    video.muted = !video.muted
    if (!video.muted && video.volume === 0) video.volume = 1
  }

  const seek = (value: number) => {
    const video = videoRef.current
    if (video) video.currentTime = value
  }

  const changeVolume = (value: number) => {
    const video = videoRef.current
    if (!video) return
    video.volume = value
    video.muted = value === 0
    if (value > 0) setMutedAttempt(false)
    setVolume(value)
  }

  // 原画 是发布方原始流：分辨率与码率只有正在播放它时才测得到，所以先按"原始画质"占位。
  const qualityOptions = qualities.map((quality) => {
    const meta =
      quality.width && quality.height
        ? `${quality.label} · ${quality.width}×${quality.height}`
        : [quality.label, quality.label === activeQuality ? sourceMeta : ''].filter(Boolean).join(' · ')
    return { value: quality.label, label: meta === quality.label ? `${quality.label} · 原始画质` : meta }
  })
  const autoLabel = qualityOptions.find((option) => option.value === autoQuality)?.label || autoQuality

  const toggleFullscreen = async () => {
    // Prefer the Fullscreen API on the player wrapper. It gives the true
    // edge-to-edge experience and, unlike F11, also works on mobile browsers and
    // when the page is embedded in an iframe (where F11's browser chrome is
    // unavailable anyway). F11 remains available as the user's own shortcut.
    const root = rootRef.current
    if (!root) return
    try {
      if (document.fullscreenElement) {
        await document.exitFullscreen()
      } else if (typeof root.requestFullscreen === 'function') {
        await root.requestFullscreen()
      } else {
        // iOS Safari has no element Fullscreen API; fall back to native video FS.
        const video = videoRef.current as (HTMLVideoElement & { webkitEnterFullscreen?: () => void }) | null
        video?.webkitEnterFullscreen?.()
      }
    } catch {
      // Denied (e.g. permissions policy) — leave the current view as-is.
    }
  }

  return (
    <div
      ref={rootRef}
      onMouseMove={revealControls}
      onMouseLeave={() => {
        if (!videoRef.current?.paused) setControlsVisible(false)
      }}
      onTouchStart={revealControls}
      className="group relative aspect-video w-full overflow-hidden rounded-lg bg-black [[:fullscreen]_&]:aspect-auto [[:fullscreen]_&]:h-screen [[:fullscreen]_&]:rounded-none [&:fullscreen]:aspect-auto [&:fullscreen]:h-screen [&:fullscreen]:w-screen [&:fullscreen]:rounded-none"
    >
      <video
        ref={videoRef}
        playsInline
        preload="metadata"
        // While the player is muted only because autoplay demanded it, a click on
        // the picture means "give me the sound", not "pause". Handling it here
        // rather than with a window-level listener keeps the two in a known order:
        // the restore happens first, then this returns without toggling playback.
        onClick={() => (mutedAttempt ? unmute() : togglePlayback())}
        className="h-full w-full"
      />

      {/* Persistent live badge — the stream state should be readable without
          hovering, since "is this live?" is the first question a viewer asks. */}
      {live && (
        <div className="pointer-events-none absolute left-3 top-3 flex items-center gap-2">
          <span className="flex items-center gap-1.5 rounded-full bg-black/60 px-2.5 py-1 text-xs font-semibold text-white backdrop-blur">
            <span className="h-1.5 w-1.5 rounded-full bg-red-500" />
            LIVE
          </span>
        </div>
      )}

      {loading && (
        <div className="pointer-events-none absolute inset-0 flex items-center justify-center">
          <div className="h-10 w-10 animate-spin rounded-full border-2 border-white/30 border-t-white" />
        </div>
      )}

      {/* Autoplay was refused: nothing plays until the viewer clicks, so this has
          to be louder than the spinner. Sits under the control bar (z-10 vs z-20)
          to keep the quality/line pickers reachable while it is up. */}
      {needsGesture && ready && (
        <button
          type="button"
          onClick={resolveGate}
          className="absolute inset-0 z-10 flex cursor-pointer flex-col items-center justify-center gap-4 bg-black/70 text-white backdrop-blur-[2px] focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-white/70"
        >
          <span className="flex h-20 w-20 animate-pulse items-center justify-center rounded-full border-2 border-white/60 bg-white/15">
            <Play className="h-9 w-9 translate-x-0.5 fill-current" />
          </span>
          <span className="text-xl font-semibold">{playing ? '已静音播放' : '点击播放'}</span>
          <span className="max-w-xs text-sm text-white/70">
            {mutedAttempt ? '点击开启声音' : '浏览器阻止了自动播放，请点击开始'}
          </span>
        </button>
      )}

      {/* Playing but only because we muted it: say so loudly, since a silent
          stream reads as broken. Any interaction restores the sound too. */}
      {mutedAttempt && !needsGesture && (
        <button
          type="button"
          onClick={unmute}
          className="absolute left-3 bottom-16 z-10 flex cursor-pointer items-center gap-2 rounded-full bg-black/70 px-3 py-1.5 text-xs font-medium text-white backdrop-blur transition-colors hover:bg-black/85"
        >
          <VolumeX className="h-4 w-4" />
          已静音播放，点击开启声音
        </button>
      )}

      {/* Controls */}
      <div
        className={
          'absolute inset-x-0 bottom-0 z-20 bg-gradient-to-t from-black/80 to-transparent p-3 transition-opacity duration-200 ' +
          (controlsVisible ? 'opacity-100' : 'pointer-events-none opacity-0')
        }
      >
        {/* VOD gets a scrubber; live gets a status strip — there is no seekable
            timeline in a live stream, and rendering one implies you can rewind. */}
        {!live && duration > 0 && (
          <div className="relative mb-2 flex h-3 items-center">
            <div className="absolute h-1 w-full rounded bg-white/20" />
            <div
              className="absolute h-1 rounded bg-white/40"
              style={{ width: `${duration ? Math.min(100, (buffered / duration) * 100) : 0}%` }}
            />
            <input
              aria-label="播放进度"
              type="range"
              min={0}
              max={duration || 0}
              step="0.1"
              value={Math.min(currentTime, duration || 0)}
              onChange={(e) => seek(Number(e.target.value))}
              className="absolute h-3 w-full cursor-pointer appearance-none bg-transparent"
            />
            {chapters.map((chapter, index) => (
              <button
                key={`${chapter.time}-${index}`}
                className="absolute h-2 w-2 -translate-x-1/2 rounded-full bg-primary"
                style={{ left: `${Math.min(100, (chapter.time / duration) * 100)}%` }}
                title={chapter.title}
                onClick={() => seek(chapter.time)}
              />
            ))}
          </div>
        )}

        <div className="flex items-center gap-3 text-white">
          {/* Play/pause mirrors the real state, so the icon is never a lie. A live
              stream has nothing to pause, so once it is running this control has
              no action left and is not rendered at all — showing either icon would
              misrepresent something: a pause icon promises a pause that does not
              happen, and a play icon makes a playing stream look stopped. It
              reappears if playback stops, which is the one case it can still act. */}
          {(!live || !playing) && (
            <button type="button" onClick={togglePlayback} aria-label={playing ? '暂停' : '播放'}>
              {loading ? (
                <Loader2 className="h-5 w-5 animate-spin" />
              ) : playing ? (
                <Pause className="h-5 w-5" />
              ) : (
                <Play className="h-5 w-5 fill-current" />
              )}
            </button>
          )}

          {live ? (
            <span className="flex items-center gap-1.5 text-xs font-semibold">
              <span className="h-1.5 w-1.5 rounded-full bg-red-500" />
              LIVE
            </span>
          ) : (
            <span className="text-xs tabular-nums">
              {formatTime(currentTime)} / {formatTime(duration)}
            </span>
          )}

          <button type="button" onClick={toggleMute} aria-label={muted ? '取消静音' : '静音'}>
            {muted ? <VolumeX className="h-4 w-4" /> : <Volume2 className="h-4 w-4" />}
          </button>
          <label className="flex items-center gap-2">
            <input
              aria-label="音量"
              type="range"
              min={0}
              max={1}
              step="0.05"
              value={muted ? 0 : volume}
              onChange={(e) => changeVolume(Number(e.target.value))}
              className="h-1 w-16 cursor-pointer"
            />
          </label>
          <span className="flex-1" />

          {live && lines.length > 1 && (
            <select
              aria-label="播放线路"
              value={activeLine}
              onChange={(e) => onLineChange(e.target.value)}
              className="rounded border border-white/30 bg-black/60 px-2 py-1 text-xs"
            >
              {lines.map((line) => (
                <option key={line.node_id} value={line.node_id} className="bg-zinc-900">
                  {line.node_name}
                </option>
              ))}
            </select>
          )}
          {live && qualityOptions.length > 0 && (
            <select
              aria-label="清晰度"
              value={activeQuality}
              onChange={(e) => onQualityChange(e.target.value)}
              className="rounded border border-white/30 bg-black/60 px-2 py-1 text-xs"
            >
              <option value="auto" className="bg-zinc-900">
                自动{autoQuality ? ` (${autoLabel})` : ''}
              </option>
              {qualityOptions.map((option) => (
                <option key={option.value} value={option.value} className="bg-zinc-900">
                  {option.label}
                </option>
              ))}
            </select>
          )}
          <button type="button" onClick={() => void toggleFullscreen()} aria-label={fullscreen ? '退出全屏' : '全屏'}>
            {fullscreen ? <Minimize className="h-5 w-5" /> : <Maximize className="h-5 w-5" />}
          </button>
        </div>
      </div>
    </div>
  )
})

export default VideoPlayer