import type { ReplayShip, CollisionEvent } from '@common/types/backtrack'

interface BacktrackReplayBarProps {
  isPlaying: boolean
  replayFrame: number
  totalFrames: number
  replaySpeed: number
  onTogglePlay: () => void
  onSeek: (frame: number) => void
  onSpeedChange: (speed: number) => void
  onClose: () => void
  replayShips: ReplayShip[]
  collisionEvent: CollisionEvent | null
  replayTimeRange?: { start: string; end: string }
}

export function BacktrackReplayBar({
  isPlaying,
  replayFrame,
  totalFrames,
  replaySpeed,
  onTogglePlay,
  onSeek,
  onSpeedChange,
  onClose,
  replayShips,
  collisionEvent,
  replayTimeRange,
}: BacktrackReplayBarProps) {
  const progress = (replayFrame / totalFrames) * 100

  // 타임 계산
  let startLabel: string
  let endLabel: string
  let currentTimeLabel: string

  if (replayTimeRange) {
    const startMs = new Date(replayTimeRange.start).getTime()
    const endMs = new Date(replayTimeRange.end).getTime()
    const currentMs = startMs + (replayFrame / totalFrames) * (endMs - startMs)
    const fmt = (ms: number) => {
      const d = new Date(ms + 9 * 3600000) // KST
      const mo = String(d.getUTCMonth() + 1).padStart(2, '0')
      const day = String(d.getUTCDate()).padStart(2, '0')
      const hh = String(d.getUTCHours()).padStart(2, '0')
      const mm = String(d.getUTCMinutes()).padStart(2, '0')
      return { date: `${mo}-${day}`, time: `${hh}:${mm}` }
    }
    const startFmt = fmt(startMs)
    const endFmt = fmt(endMs)
    const curFmt = fmt(currentMs)
    startLabel = `${startFmt.date} ${startFmt.time}`
    endLabel = `${endFmt.date} ${endFmt.time}`
    currentTimeLabel = `${curFmt.date} ${curFmt.time} KST`
  } else {
    // 기존 하드코딩 폴백
    const hours = 18.5 + (replayFrame / totalFrames) * 12
    const displayHours = hours >= 24 ? hours - 24 : hours
    const h = Math.floor(displayHours)
    const m = Math.round((displayHours - h) * 60)
    const dayLabel = hours >= 24 ? '02-10' : '02-09'
    startLabel = '18:30'
    endLabel = '06:30'
    currentTimeLabel = `${dayLabel} ${String(h).padStart(2, '0')}:${String(m).padStart(2, '0')} KST`
  }

  const handleSeekClick = (e: React.MouseEvent<HTMLDivElement>) => {
    const rect = e.currentTarget.getBoundingClientRect()
    const pct = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width))
    onSeek(Math.round(pct * totalFrames))
  }

  return (
    <div
      className="absolute flex flex-col"
      style={{
        bottom: '80px', left: '50%', transform: 'translateX(-50%)',
        minWidth: '480px', maxWidth: '680px', width: '60%',
        background: 'rgba(10,15,25,0.92)', backdropFilter: 'blur(12px)',
        border: '1px solid rgba(168,85,247,0.3)', borderRadius: '12px',
        padding: '12px 18px', zIndex: 1200,
        gap: '10px',
      }}
    >
      {/* Header row */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-2">
          <div
            className="w-2 h-2 rounded-full bg-primary-purple"
            style={{ boxShadow: '0 0 8px rgba(168,85,247,0.5)' }}
          />
          <span className="text-xs font-bold">
            역추적 리플레이
          </span>
        </div>

        <div className="flex items-center gap-1.5">
          {/* Speed buttons */}
          {[1, 2, 4].map((spd) => (
            <button
              key={spd}
              onClick={() => onSpeedChange(spd)}
              className={`bt-spd-btn ${replaySpeed === spd ? 'active' : ''}`}
            >
              {spd}×
            </button>
          ))}

          <div className="w-2" />

          {/* Close button */}
          <button
            onClick={onClose}
            className="text-status-red cursor-pointer font-bold"
            style={{
              padding: '4px 10px', borderRadius: '6px', fontSize: '10px',
              background: 'rgba(239,68,68,0.1)', border: '1px solid rgba(239,68,68,0.3)',
            }}
          >
            ✕ 닫기
          </button>
        </div>
      </div>

      {/* Controls row */}
      <div className="flex items-center gap-3">
        {/* Play/Pause */}
        <button
          onClick={onTogglePlay}
          className="shrink-0 w-9 h-9 rounded-full flex items-center justify-center text-sm cursor-pointer"
          style={{
            background: isPlaying ? 'var(--purple)' : 'rgba(168,85,247,0.15)',
            border: `2px solid ${isPlaying ? 'var(--purple)' : 'rgba(168,85,247,0.4)'}`,
            color: isPlaying ? '#fff' : 'var(--purple)',
          }}
        >
          {isPlaying ? '⏸' : '▶'}
        </button>

        {/* Timeline */}
        <div className="flex-1 flex flex-col gap-1">
          {/* Progress bar */}
          <div
            className="relative h-5 flex items-center cursor-pointer"
            onClick={handleSeekClick}
          >
            <div
              className="w-full h-1 bg-border relative overflow-visible"
              style={{ borderRadius: '2px' }}
            >
              {/* Fill */}
              <div
                className="absolute top-0 left-0 h-full"
                style={{
                  width: `${progress}%`,
                  background: 'linear-gradient(90deg, var(--purple), var(--cyan))',
                  borderRadius: '2px', transition: 'width 0.05s',
                }}
              />

              {/* Collision marker */}
              {collisionEvent && (
                <div
                  className="absolute text-[10px] cursor-pointer"
                  style={{
                    top: '-14px',
                    left: `${collisionEvent.progressPercent}%`,
                    transform: 'translateX(-50%)',
                  }}
                  title={collisionEvent.timeLabel}
                >
                  💥
                </div>
              )}
            </div>

            {/* Thumb */}
            <div
              className="absolute top-1/2 w-3.5 h-3.5 bg-white rounded-full"
              style={{
                left: `${progress}%`,
                transform: 'translate(-50%, -50%)',
                border: '3px solid var(--purple)',
                boxShadow: '0 0 8px rgba(168,85,247,0.4)',
                zIndex: 2, transition: 'left 0.05s',
              }}
            />
          </div>

          {/* Time labels */}
          <div className="flex justify-between text-[9px] font-mono">
            <span className="text-text-3">{startLabel}</span>
            <span className="font-semibold text-primary-purple">{currentTimeLabel}</span>
            <span className="text-text-3">{endLabel}</span>
          </div>
        </div>
      </div>

      {/* Legend row */}
      <div className="flex items-center gap-[14px] pt-1 border-t border-border">
        {replayShips.map((ship) => (
          <div key={ship.vesselName} className="flex items-center gap-1.5">
            <div className="w-4 h-[3px]" style={{ background: ship.color, borderRadius: '1px' }} />
            <span className="text-[9px] text-text-2 font-mono">
              {ship.vesselName}
            </span>
          </div>
        ))}
      </div>
    </div>
  )
}