import { useRef, useEffect } from 'react';
import { FONT_MONO } from '../../styles/fonts';
import { useGearReplayStore } from '../../stores/gearReplayStore';

interface HistoryReplayControllerProps {
  onClose: () => void;
  onFilterByScore: (minPct: number | null) => void;
}

const HistoryReplayController = ({ onClose, onFilterByScore }: HistoryReplayControllerProps) => {
  const isPlaying = useGearReplayStore(s => s.isPlaying);
  const snapshotRanges = useGearReplayStore(s => s.snapshotRanges);
  const frameCount = useGearReplayStore(s => s.historyFrames.length);
  const showTrails = useGearReplayStore(s => s.showTrails);
  const showLabels = useGearReplayStore(s => s.showLabels);

  const progressBarRef = useRef<HTMLInputElement>(null);
  const progressIndicatorRef = useRef<HTMLDivElement>(null);
  const timeDisplayRef = useRef<HTMLSpanElement>(null);

  useEffect(() => {
    const unsub = useGearReplayStore.subscribe(
      s => s.currentTime,
      (currentTime) => {
        const { startTime, endTime } = useGearReplayStore.getState();
        if (endTime <= startTime) return;
        const progress = (currentTime - startTime) / (endTime - startTime);
        if (progressBarRef.current) progressBarRef.current.value = String(Math.round(progress * 1000));
        if (progressIndicatorRef.current) progressIndicatorRef.current.style.left = `${progress * 100}%`;
        if (timeDisplayRef.current) {
          timeDisplayRef.current.textContent = new Date(currentTime).toLocaleTimeString('ko-KR', { hour: '2-digit', minute: '2-digit' });
        }
      },
    );
    return unsub;
  }, []);

  const store = useGearReplayStore;
  const btnStyle: React.CSSProperties = {
    background: 'none', border: '1px solid rgba(99,179,237,0.3)', borderRadius: 4,
    color: '#e2e8f0', cursor: 'pointer', padding: '2px 6px', fontSize: 10, fontFamily: FONT_MONO,
  };
  const btnActiveStyle: React.CSSProperties = {
    ...btnStyle, background: 'rgba(99,179,237,0.15)', color: '#93c5fd',
  };

  return (
    <div style={{
      position: 'absolute', bottom: 20, left: '50%', transform: 'translateX(-50%)',
      background: 'rgba(12,24,37,0.95)', border: '1px solid rgba(99,179,237,0.25)',
      borderRadius: 8, padding: '8px 14px', display: 'flex', flexDirection: 'column', gap: 4,
      zIndex: 20, fontFamily: FONT_MONO, fontSize: 10, color: '#e2e8f0',
      boxShadow: '0 4px 16px rgba(0,0,0,0.5)', pointerEvents: 'auto', minWidth: 420,
    }}>
      {/* 프로그레스 바 */}
      <div style={{ position: 'relative', height: 8, background: 'rgba(255,255,255,0.05)', borderRadius: 4, overflow: 'hidden' }}>
        {snapshotRanges.map((pos, i) => (
          <div key={i} style={{
            position: 'absolute', left: `${pos * 100}%`, top: 0, width: 2, height: '100%',
            background: 'rgba(251,191,36,0.4)',
          }} />
        ))}
        <div ref={progressIndicatorRef} style={{
          position: 'absolute', left: '0%', top: -1, width: 3, height: 10,
          background: '#fbbf24', borderRadius: 1, transform: 'translateX(-50%)',
        }} />
      </div>

      {/* 컨트롤 행 1: 재생 + 타임라인 */}
      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
        <button type="button" onClick={() => { if (isPlaying) store.getState().pause(); else store.getState().play(); }}
          style={{ ...btnStyle, fontSize: 12 }}>
          {isPlaying ? '⏸' : '▶'}
        </button>
        <span ref={timeDisplayRef} style={{ color: '#fbbf24', minWidth: 40, textAlign: 'center' }}>--:--</span>
        <input ref={progressBarRef} type="range" min={0} max={1000} defaultValue={0}
          onChange={e => {
            const { startTime, endTime } = store.getState();
            const progress = Number(e.target.value) / 1000;
            store.getState().pause();
            store.getState().seek(startTime + progress * (endTime - startTime));
          }}
          style={{ flex: 1, cursor: 'pointer', accentColor: '#fbbf24' }}
          title="히스토리 타임라인" aria-label="히스토리 타임라인" />
        <span style={{ color: '#64748b', fontSize: 9 }}>{frameCount}건</span>
        <button type="button" onClick={onClose}
          style={{ background: 'none', border: '1px solid rgba(239,68,68,0.3)', borderRadius: 4, color: '#ef4444', cursor: 'pointer', padding: '2px 6px', fontSize: 11, fontFamily: FONT_MONO }}>
          ✕
        </button>
      </div>

      {/* 컨트롤 행 2: 표시 옵션 */}
      <div style={{ display: 'flex', alignItems: 'center', gap: 6, borderTop: '1px solid rgba(255,255,255,0.06)', paddingTop: 4 }}>
        <button type="button" onClick={() => store.getState().setShowTrails(!showTrails)}
          style={showTrails ? btnActiveStyle : btnStyle} title="전체 항적 표시">
          항적
        </button>
        <button type="button" onClick={() => store.getState().setShowLabels(!showLabels)}
          style={showLabels ? btnActiveStyle : btnStyle} title="이름 표시">
          이름
        </button>
        <span style={{ color: '#475569', margin: '0 2px' }}>|</span>
        <span style={{ color: '#64748b', fontSize: 9 }}>일치율</span>
        <select
          onChange={e => {
            const val = e.target.value;
            onFilterByScore(val === '' ? null : Number(val));
          }}
          style={{
            background: 'rgba(15,23,42,0.9)', border: '1px solid rgba(99,179,237,0.3)',
            borderRadius: 4, color: '#e2e8f0', fontSize: 9, fontFamily: FONT_MONO,
            padding: '1px 4px', cursor: 'pointer',
          }}
          title="일치율 이상만 표시" aria-label="일치율 필터"
        >
          <option value="">전체</option>
          <option value="50">50%+</option>
          <option value="60">60%+</option>
          <option value="70">70%+</option>
          <option value="80">80%+</option>
          <option value="90">90%+</option>
        </select>
      </div>
    </div>
  );
};

export default HistoryReplayController;
