signal-batch/frontend/src/features/area-search/components/TimelineControl.tsx

import { useAreaAnimationStore, PLAYBACK_SPEEDS } from '../stores/animationStore'

export default function TimelineControl() {
  const isPlaying = useAreaAnimationStore((s) => s.isPlaying)
  const currentTime = useAreaAnimationStore((s) => s.currentTime)
  const startTime = useAreaAnimationStore((s) => s.startTime)
  const endTime = useAreaAnimationStore((s) => s.endTime)
  const playbackSpeed = useAreaAnimationStore((s) => s.playbackSpeed)
  const loop = useAreaAnimationStore((s) => s.loop)
  const play = useAreaAnimationStore((s) => s.play)
  const pause = useAreaAnimationStore((s) => s.pause)
  const stop = useAreaAnimationStore((s) => s.stop)
  const setPlaybackSpeed = useAreaAnimationStore((s) => s.setPlaybackSpeed)
  const setProgressByRatio = useAreaAnimationStore((s) => s.setProgressByRatio)
  const toggleLoop = useAreaAnimationStore((s) => s.toggleLoop)

  const duration = endTime - startTime
  const progress = duration > 0 ? (currentTime - startTime) / duration : 0

  const formatTime = (ms: number) => {
    const d = new Date(ms)
    return d.toLocaleString('ko-KR', {
      month: '2-digit',
      day: '2-digit',
      hour: '2-digit',
      minute: '2-digit',
      second: '2-digit',
    })
  }

  if (startTime === 0 && endTime === 0) return null

  return (
    <div className="absolute bottom-4 left-1/2 z-10 w-[560px] -translate-x-1/2 rounded-lg border border-border bg-surface/95 p-3 shadow-lg backdrop-blur">
      {/* 타임라인 */}
      <div className="mb-2">
        <input
          type="range"
          min={0}
          max={1000}
          value={Math.round(progress * 1000)}
          onChange={(e) => setProgressByRatio(Number(e.target.value) / 1000)}
          className="h-1.5 w-full cursor-pointer accent-primary"
        />
        <div className="mt-1 flex justify-between text-[10px] text-muted">
          <span>{formatTime(startTime)}</span>
          <span className="font-medium text-foreground">{formatTime(currentTime)}</span>
          <span>{formatTime(endTime)}</span>
        </div>
      </div>

      {/* 컨트롤 */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-1">
          <button
            onClick={stop}
            className="rounded px-2 py-1 text-xs text-muted hover:bg-surface-hover"
            title="정지"
          >
            &#9632;
          </button>
          <button
            onClick={isPlaying ? pause : play}
            className="rounded bg-primary px-3 py-1 text-xs font-medium text-white hover:bg-primary/90"
          >
            {isPlaying ? '||' : '\u25B6'}
          </button>
          <button
            onClick={toggleLoop}
            className={`rounded px-2 py-1 text-xs transition ${
              loop ? 'text-primary' : 'text-muted hover:text-foreground'
            }`}
            title="반복"
          >
            &#x21BB;
          </button>
        </div>

        <div className="flex items-center gap-1">
          {PLAYBACK_SPEEDS.map((speed) => (
            <button
              key={speed}
              onClick={() => setPlaybackSpeed(speed)}
              className={`rounded px-1.5 py-0.5 text-[10px] transition ${
                playbackSpeed === speed
                  ? 'bg-primary/10 font-bold text-primary'
                  : 'text-muted hover:text-foreground'
              }`}
            >
              {speed}x
            </button>
          ))}
        </div>
      </div>
    </div>
  )
}