import React from 'react';
import { BasemapType, DisplayMode, type SimulationResult } from './types';
import { AddressSearch } from './AddressSearch';
import { CRS } from './crs';
import { type MapFocusRequest } from './Map';

export interface MapHeaderProps {
  crs: CRS;
  basemap: BasemapType;
  displayMode: DisplayMode;
  setCrs: React.Dispatch<React.SetStateAction<CRS>>;
  crsSelectRef: React.RefObject<HTMLSelectElement>;
  setBasemap: React.Dispatch<React.SetStateAction<BasemapType>>;
  setDisplayMode: React.Dispatch<React.SetStateAction<DisplayMode>>;
  requestMapFocus: (request: Omit<MapFocusRequest, 'id'>) => void;
  showToast: (msg: string) => void;
  wasmResult: SimulationResult | null;
}

/** Map pane toolbar: CRS, basemap and result display selectors. */
export const MapHeader: React.FC<MapHeaderProps> = ({
  crs,
  basemap,
  displayMode,
  setCrs,
  crsSelectRef,
  setBasemap,
  setDisplayMode,
  requestMapFocus,
  showToast,
  wasmResult,
}) => (
  <div className="map-header">
    {/* Right toolbar: Basemap, CRS, Data */}
    <div style={{ display: 'flex', alignItems: 'center', gap: '8px' }}>
      {/* CRS Selector */}
      <div style={{ display: 'flex', alignItems: 'center', gap: '4px' }}>
        <select
          ref={crsSelectRef}
          value={crs}
          onChange={(e) => setCrs(e.target.value as CRS)}
          style={{ fontSize: '12px', padding: '3px 6px', border: '1px solid #cbd5e1', borderRadius: '4px', maxWidth: '175px' }}
          aria-label="좌표계 선택"
        >
          <optgroup label="기본 및 글로벌">
            <option value="LOCAL">로컬 평면 (Local)</option>
            <option value="EPSG:4326">WGS84 경위도 (4326)</option>
            <option value="EPSG:3857">Web Mercator (3857)</option>
          </optgroup>
          <optgroup label="국가표준 GRS80 (현행 법정)">
            <option value="EPSG:5179">한국 UTM-K (5179)</option>
            <option value="EPSG:5186">중부원점 GRS80 (5186)</option>
            <option value="EPSG:5185">서부원점 GRS80 (5185)</option>
            <option value="EPSG:5187">동부원점 GRS80 (5187)</option>
            <option value="EPSG:5188">동해원점 GRS80 (5188)</option>
            <option value="EPSG:5180">제주원점 GRS80 (5180)</option>
          </optgroup>
          <optgroup label="포털 지도">
            <option value="EPSG:5181">카카오맵 중부 (5181)</option>
          </optgroup>
          <optgroup label="구 지적 / Bessel (상수도 구 GIS)">
            <option value="EPSG:5174">구 지적 중부 (5174)</option>
            <option value="EPSG:5176">구 기준점 중부 (5176)</option>
            <option value="EPSG:5173">구 지적 서부 (5173)</option>
            <option value="EPSG:5177">구 지적 동부 (5177)</option>
            <option value="EPSG:5175">구 지적 제주 (5175)</option>
          </optgroup>
          <optgroup label="KGD2002 과도기 (Y+500,000)">
            <option value="EPSG:102080">KGD2002 중부 (102080)</option>
            <option value="EPSG:102081">KGD2002 서부 (102081)</option>
            <option value="EPSG:102082">KGD2002 동부 (102082)</option>
            <option value="EPSG:102083">KGD2002 동해 (102083)</option>
          </optgroup>
        </select>
      </div>
  
      {/* Basemap Selector */}
      <div style={{ display: 'flex', alignItems: 'center', gap: '4px' }}>
        <span style={{ fontSize: '12px', color: 'var(--text-secondary)' }}>지도:</span>
        <select
          value={basemap}
          onChange={(e) => setBasemap(e.target.value as BasemapType)}
          style={{ fontSize: '12px', padding: '3px 6px', border: '1px solid #cbd5e1', borderRadius: '4px' }}
        >
          <option value="blank">단색 배경</option>
          <option value="osm">OpenStreetMap</option>
          <optgroup label="브이월드 (VWorld)">
            <option value="vworld">일반 지도</option>
            <option value="vworld-white">백지도</option>
            <option value="vworld-midnight">야간 지도</option>
            <option value="vworld-satellite">위성 영상</option>
            <option value="vworld-satellite-hybrid">위성 + 도로·지명</option>
          </optgroup>
        </select>
      </div>
  
      {/* Data display mode */}
      <div style={{ display: 'flex', alignItems: 'center', gap: '4px' }}>
        <span style={{ fontSize: '12px', color: 'var(--text-secondary)' }}>표시:</span>
        <select
          value={displayMode}
          onChange={(e) =>
            setDisplayMode(e.target.value as DisplayMode)
          }
          style={{ fontSize: '12px', padding: '3px 6px', border: '1px solid #cbd5e1', borderRadius: '4px' }}
        >
          <option value="pressure">압력 (Pressure)</option>
          <option value="head">수두 (Head)</option>
          <option value="flow">유량 (Flow)</option>
          <option value="velocity">유속 (Velocity)</option>
          <option value="headloss">수두손실 (Headloss)</option>
          <option value="elevation">지형 표고 (Elevation)</option>
          <option value="diff-pressure">수압 변화량 (Diff ΔP)</option>
          <option value="diff-flow">유량 변화량 (Diff ΔQ)</option>
          <option value="quality">
            수질 (Quality - {wasmResult?.qualityInfo?.chemName || '농도/수령'})
          </option>
        </select>
      </div>
    </div>
    <AddressSearch
      onSelect={(result) => {
        requestMapFocus({
          lngLat: [result.longitude, result.latitude],
          zoom: 17,
        });
        setBasemap('vworld');
        showToast(`주소로 이동: ${result.roadAddressName || result.parcelAddressName || result.addressName}`);
      }}
    />
  </div>
);