/**
 * 리플레이 전용 범례 컴포넌트
 * - 리플레이 모드에서 선종별 카운트 표시
 * - ShipLegend 디자인 재사용, replayStore 연동
 */
import { memo } from 'react';
import { shallow } from 'zustand/shallow';
import useReplayStore from '../../replay/stores/replayStore';
import {
  SIGNAL_KIND_CODE_FISHING,
  SIGNAL_KIND_CODE_KCGV,
  SIGNAL_KIND_CODE_PASSENGER,
  SIGNAL_KIND_CODE_CARGO,
  SIGNAL_KIND_CODE_TANKER,
  SIGNAL_KIND_CODE_GOV,
  SIGNAL_KIND_CODE_NORMAL,
  SIGNAL_KIND_CODE_BUOY,
} from '../../types/constants';
import './ShipLegend.scss';

// 선박 종류별 SVG 아이콘
import fishingIcon from '../../assets/img/shipKindIcons/fishing.svg';
import passIcon from '../../assets/img/shipKindIcons/pass.svg';
import cargoIcon from '../../assets/img/shipKindIcons/cargo.svg';
import hazardIcon from '../../assets/img/shipKindIcons/hazard.svg';
import govIcon from '../../assets/img/shipKindIcons/gov.svg';
import kcgvIcon from '../../assets/img/shipKindIcons/kcgv.svg';
import bouyIcon from '../../assets/img/shipKindIcons/bouy.svg';
import etcIcon from '../../assets/img/shipKindIcons/etc.svg';

/**
 * 선박 종류 코드 -> 아이콘 매핑
 */
const SHIP_KIND_ICONS: Record<string, string> = {
  [SIGNAL_KIND_CODE_FISHING]: fishingIcon,
  [SIGNAL_KIND_CODE_KCGV]: kcgvIcon,
  [SIGNAL_KIND_CODE_PASSENGER]: passIcon,
  [SIGNAL_KIND_CODE_CARGO]: cargoIcon,
  [SIGNAL_KIND_CODE_TANKER]: hazardIcon,
  [SIGNAL_KIND_CODE_GOV]: govIcon,
  [SIGNAL_KIND_CODE_NORMAL]: etcIcon,
  [SIGNAL_KIND_CODE_BUOY]: bouyIcon,
};

interface LegendItemConfig {
  code: string;
  label: string;
}

/**
 * 범례 항목 설정
 */
const LEGEND_ITEMS: LegendItemConfig[] = [
  { code: SIGNAL_KIND_CODE_FISHING, label: '어선' },
  { code: SIGNAL_KIND_CODE_PASSENGER, label: '여객선' },
  { code: SIGNAL_KIND_CODE_CARGO, label: '화물선' },
  { code: SIGNAL_KIND_CODE_TANKER, label: '유조선' },
  { code: SIGNAL_KIND_CODE_GOV, label: '관공선' },
  { code: SIGNAL_KIND_CODE_KCGV, label: '경비함정' },
  { code: SIGNAL_KIND_CODE_BUOY, label: '어망/부이' },
  { code: SIGNAL_KIND_CODE_NORMAL, label: '기타' },
];

interface ReplayLegendItemProps {
  code: string;
  label: string;
  count: number;
  icon: string;
  isVisible: boolean;
  onToggle: (code: string) => void;
}

/**
 * 리플레이 범례 항목
 */
const ReplayLegendItem = memo(function ReplayLegendItem({ code, label, count, icon, isVisible, onToggle }: ReplayLegendItemProps) {
  const isBuoy = code === SIGNAL_KIND_CODE_BUOY;

  return (
    <li className={`legend-item ${!isVisible ? 'disabled' : ''}`}>
      <div className="legend-info" onClick={() => onToggle(code)}>
        <span className="legend-icon">
          <img
            src={icon}
            alt={label}
            style={{ transform: isBuoy ? 'rotate(0deg)' : 'rotate(45deg)' }}
          />
        </span>
        <span className="legend-label">{label}</span>
      </div>
      <span className="legend-count">{count}</span>
    </li>
  );
});

/**
 * 리플레이 전용 범례 컴포넌트
 */
const ReplayLegend = memo(function ReplayLegend() {
  const { replayShipCounts, replayTotalCount, shipKindCodeFilter } =
    useReplayStore(
      (state: {
        replayShipCounts: Record<string, number>;
        replayTotalCount: number;
        shipKindCodeFilter: Set<string>;
      }) => ({
        replayShipCounts: state.replayShipCounts,
        replayTotalCount: state.replayTotalCount,
        shipKindCodeFilter: state.shipKindCodeFilter,
      }),
      shallow
    );
  const toggleShipKindCode = useReplayStore((state: { toggleShipKindCode: (code: string) => void }) => state.toggleShipKindCode);

  return (
    <article className="ship-legend">
      {/* 헤더 */}
      <div className="legend-header">
        <div className="legend-title">
          <span>리플레이 현황</span>
        </div>
      </div>

      {/* 선박 종류별 목록 */}
      <ul className="legend-list">
        {LEGEND_ITEMS.map((item) => (
          <ReplayLegendItem
            key={item.code}
            code={item.code}
            label={item.label}
            count={replayShipCounts[item.code] || 0}
            icon={SHIP_KIND_ICONS[item.code]}
            isVisible={shipKindCodeFilter.has(item.code)}
            onToggle={toggleShipKindCode}
          />
        ))}
      </ul>

      {/* 푸터 - 전체 카운트 */}
      <div className="legend-footer">
        <span>전체</span>
        <span className="total-count">{replayTotalCount}</span>
      </div>
    </article>
  );
});

export default ReplayLegend;