const fs = require('fs');
const DxfParser = require('c:/Users/user/.gemini/tunnelsection/TunnelModeler3D/dxf-parser.js');

function analyzeWallGeometry(dxfPath, label) {
  if (!fs.existsSync(dxfPath)) return;
  console.log(`\n======================================================`);
  console.log(`[${label}] 공동구 선분 기하 정밀 실측: ${dxfPath}`);
  const dxf = new DxfParser().parseSync(fs.readFileSync(dxfPath, 'utf8'));

  // app.js와 동일한 방식으로 targetCenterX, targetCenterY, pavement 선분 찾기
  let appCode = fs.readFileSync('c:/Users/user/.gemini/tunnelsection/TunnelModeler3D/app.js', 'utf8');

  // mock 환경
  global.window = {
    current3DTunnelLength: 10, current3DOpacity: 1.0, current3DOuterOpacity: 1.0,
    current3DViewMode: 'bird', current3DTheme: 'dark', current3DVisibility: {},
    sectionParams: {}, ugData: { left: {}, right: {} },
    addEventListener: () => {}, lastGeneratedLoops2D: [], view2D: { zoom: 1, panX: 0, panY: 0 }
  };
  const mockCtx = {
    fillRect: ()=>{}, strokeRect: ()=>{}, beginPath: ()=>{}, closePath: ()=>{},
    moveTo: ()=>{}, lineTo: ()=>{}, stroke: ()=>{}, fill: ()=>{},
    save: ()=>{}, restore: ()=>{}, setTransform: ()=>{}, fillText: ()=>{}
  };
  global.document = {
    getElementById: () => ({
      classList: { add: ()=>{}, remove: ()=>{} },
      addEventListener: () => {}, value: '', disabled: false,
      getContext: () => mockCtx, getBoundingClientRect: () => ({ width: 800, height: 600 })
    }),
    querySelectorAll: () => []
  };
  global.$ = (id) => global.document.getElementById(id);
  global.Plotly = { react: () => {} };

  eval(appCode);
  extractParamsFromDXF(dxf, label);

  const sp = window.sectionParams;
  const pL_X = sp.pavementLeftX;
  const pR_X = sp.pavementRightX;

  // 단면 선분들 중 좌측 공동구 영역(X: pL_X - 1500 ~ pL_X)과 우측 공동구 영역(X: pR_X ~ pR_X + 1500)
  const allLines = dxf.entities.filter(e => e.type === 'LINE');
  
  // 좌측 공동구 상단선(수평선) 탐색
  const leftHLines = allLines.filter(l => {
    const minX = Math.min(l.vertices[0].x, l.vertices[1].x);
    const maxX = Math.max(l.vertices[0].x, l.vertices[1].x);
    const dy = Math.abs(l.vertices[0].y - l.vertices[1].y);
    const dx = Math.abs(l.vertices[0].x - l.vertices[1].x);
    return minX >= pL_X - 2500 && maxX <= pL_X + 100 && dy <= 3.0 && dx >= 40;
  });

  // 우측 공동구 상단선(수평선) 탐색
  const rightHLines = allLines.filter(l => {
    const minX = Math.min(l.vertices[0].x, l.vertices[1].x);
    const maxX = Math.max(l.vertices[0].x, l.vertices[1].x);
    const dy = Math.abs(l.vertices[0].y - l.vertices[1].y);
    const dx = Math.abs(l.vertices[0].x - l.vertices[1].x);
    return minX >= pR_X - 100 && maxX <= pR_X + 2500 && dy <= 3.0 && dx >= 40;
  });

  // 도로 표면 기준 높이(포장 끝단 Y)
  // roadOriginY는 대략 포장 끝점 Y
  const pL_Y = sp.roadOriginY || 0; // sp에는 없음, app.js 내 pL_Y 찾기
  console.log(`  포장 좌측단 X=${Math.round(pL_X)}, 우측단 X=${Math.round(pR_X)}`);
  console.log(`  [좌측 수평선들 (X, Y, 길이 dx)]:`);
  leftHLines.sort((a,b) => b.vertices[0].y - a.vertices[0].y).slice(0, 10).forEach(l => {
    const x1 = Math.round(l.vertices[0].x), x2 = Math.round(l.vertices[1].x);
    const y = Math.round((l.vertices[0].y + l.vertices[1].y)/2);
    const len = Math.round(Math.abs(x1 - x2));
    console.log(`    Y=${y}, X=[${Math.min(x1,x2)} ~ ${Math.max(x1,x2)}], dx=${len}, layer=${l.layer}`);
  });

  console.log(`  [우측 수평선들 (X, Y, 길이 dx)]:`);
  rightHLines.sort((a,b) => b.vertices[0].y - a.vertices[0].y).slice(0, 10).forEach(l => {
    const x1 = Math.round(l.vertices[0].x), x2 = Math.round(l.vertices[1].x);
    const y = Math.round((l.vertices[0].y + l.vertices[1].y)/2);
    const len = Math.round(Math.abs(x1 - x2));
    console.log(`    Y=${y}, X=[${Math.min(x1,x2)} ~ ${Math.max(x1,x2)}], dx=${len}, layer=${l.layer}`);
  });
}

analyzeWallGeometry('c:/Users/user/.gemini/tunnelsection/TunnelModeler3D/Test Sample/세종안성_서운1.dxf', '서운1');
analyzeWallGeometry('c:/Users/user/.gemini/tunnelsection/TunnelModeler3D/Test Sample/안성구리3_고삼.dxf', '고삼');
analyzeWallGeometry('c:/Users/user/.gemini/antigravity/brain/9c348cd5-3f07-4ade-adba-e28b2709935f/scratch/wansan_out/wansan.dxf', '완산');
analyzeWallGeometry('c:/Users/user/.gemini/antigravity/brain/9c348cd5-3f07-4ade-adba-e28b2709935f/scratch/namhan_out/namhan.dxf', '남한산성');