import { useEffect, useRef, useState, type CSSProperties } from 'react';

interface Props {
  x: number;
  y: number;
  mmsi: number;
  vesselName: string;
  isPermitted: boolean;
  onRequestTrack?: (mmsi: number, minutes: number) => void;
  onClose: () => void;
}

const TRACK_OPTIONS = [
  { label: '6시간', minutes: 360 },
  { label: '12시간', minutes: 720 },
  { label: '1일', minutes: 1440 },
  { label: '3일', minutes: 4320 },
  { label: '5일', minutes: 7200 },
] as const;

const MENU_WIDTH = 180;
const MENU_PAD = 8;

const STYLE_ITEM: CSSProperties = {
  display: 'block',
  width: '100%',
  padding: '5px 12px 5px 24px',
  background: 'none',
  border: 'none',
  color: '#e2e2e2',
  fontSize: 12,
  textAlign: 'left',
  cursor: 'pointer',
  lineHeight: 1.4,
};

const STYLE_SEPARATOR: CSSProperties = {
  height: 1,
  background: 'rgba(255,255,255,0.08)',
  margin: '3px 0',
};

function handleHover(e: React.MouseEvent) {
  (e.target as HTMLElement).style.background = 'rgba(59,130,246,0.18)';
}

function handleLeave(e: React.MouseEvent) {
  (e.target as HTMLElement).style.background = 'none';
}

export function VesselContextMenu({ x, y, mmsi, vesselName, isPermitted, onRequestTrack, onClose }: Props) {
  const ref = useRef<HTMLDivElement>(null);
  const [copiedField, setCopiedField] = useState<'name' | 'mmsi' | null>(null);

  const estimatedHeight = (isPermitted && onRequestTrack ? TRACK_OPTIONS.length * 30 + 56 : 0) + 90;
  const left = Math.min(x, window.innerWidth - MENU_WIDTH - MENU_PAD);
  const maxTop = window.innerHeight - estimatedHeight - MENU_PAD;
  const top = Math.min(y, maxTop);

  useEffect(() => {
    const onKey = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose();
    };
    const onClick = (e: MouseEvent) => {
      if (ref.current && !ref.current.contains(e.target as Node)) onClose();
    };
    const onScroll = () => onClose();

    window.addEventListener('keydown', onKey);
    window.addEventListener('mousedown', onClick, true);
    window.addEventListener('scroll', onScroll, true);
    return () => {
      window.removeEventListener('keydown', onKey);
      window.removeEventListener('mousedown', onClick, true);
      window.removeEventListener('scroll', onScroll, true);
    };
  }, [onClose]);

  const handleCopy = async (text: string, field: 'name' | 'mmsi') => {
    try {
      await navigator.clipboard.writeText(text);
      setCopiedField(field);
      setTimeout(() => setCopiedField(null), 1200);
    } catch {
      // clipboard API 불가 시 무시
    }
  };

  const handleSelectTrack = (minutes: number) => {
    onRequestTrack?.(mmsi, minutes);
    onClose();
  };

  return (
    <div
      ref={ref}
      style={{
        position: 'fixed',
        left,
        top,
        zIndex: 9999,
        minWidth: MENU_WIDTH,
        background: 'rgba(24, 24, 32, 0.96)',
        border: '1px solid rgba(255,255,255,0.12)',
        borderRadius: 8,
        boxShadow: '0 8px 24px rgba(0,0,0,0.5)',
        padding: '4px 0',
        fontFamily: 'system-ui, sans-serif',
        fontSize: 12,
        color: '#e2e2e2',
        backdropFilter: 'blur(8px)',
      }}
    >
      {/* Header */}
      <div
        style={{
          padding: '6px 12px 4px',
          fontSize: 10,
          fontWeight: 700,
          color: 'rgba(255,255,255,0.45)',
          letterSpacing: 0.3,
          borderBottom: '1px solid rgba(255,255,255,0.06)',
          marginBottom: 2,
          whiteSpace: 'nowrap',
          overflow: 'hidden',
          textOverflow: 'ellipsis',
          maxWidth: MENU_WIDTH - 24,
        }}
        title={`${vesselName} (${mmsi})`}
      >
        {vesselName}
      </div>

      {/* 선명 복사 */}
      <button
        type="button"
        style={STYLE_ITEM}
        onClick={() => handleCopy(vesselName, 'name')}
        onMouseEnter={handleHover}
        onMouseLeave={handleLeave}
      >
        {copiedField === 'name' ? '복사됨' : '선명 복사'}
      </button>

      {/* MMSI 복사 */}
      <button
        type="button"
        style={STYLE_ITEM}
        onClick={() => handleCopy(String(mmsi), 'mmsi')}
        onMouseEnter={handleHover}
        onMouseLeave={handleLeave}
      >
        {copiedField === 'mmsi' ? '복사됨' : 'MMSI 복사'}
      </button>

      {/* 항적조회 (대상선박만) */}
      {isPermitted && onRequestTrack && (
        <>
          <div style={STYLE_SEPARATOR} />
          <div
            style={{
              padding: '4px 12px 2px',
              fontSize: 11,
              fontWeight: 600,
              color: 'rgba(255,255,255,0.6)',
            }}
          >
            항적조회
          </div>
          {TRACK_OPTIONS.map((opt) => (
            <button
              type="button"
              key={opt.minutes}
              onClick={() => handleSelectTrack(opt.minutes)}
              style={STYLE_ITEM}
              onMouseEnter={handleHover}
              onMouseLeave={handleLeave}
            >
              {opt.label}
            </button>
          ))}
        </>
      )}
    </div>
  );
}