/* B05 잘린 자리 윤곽(`cut-merged`) 단위검증 헬퍼 — `_Corridor_Cut.ts`를 그 자리에서
 * 트랜스파일해 Node로 돌린다(타입 import뿐이라 의존 없음). 2026-09-02 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));

const source = fs.readFileSync(
  path.join(__dirname, "..", "..", "B05_Profile", "B05_Profile_UI_Corridor_Cut.ts"),
  "utf8",
);
const js = ts.transpileModule(source, {
  compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
}).outputText;
const moduleBox = { exports: {} };
new Function("exports", "module", "require", js)(moduleBox.exports, moduleBox, require);
const { maskFillByPlanCurves } = moduleBox.exports;

/** 직선 노선 성토 리본 — x = 종방향(1m/행), y = 횡방향(1m/열), z = 0. */
function ribbonOf(rows, cols) {
  const positions = new Float64Array(rows * cols * 3);
  for (let row = 0; row < rows; row += 1) {
    for (let col = 0; col < cols; col += 1) {
      const i = (row * cols + col) * 3;
      positions[i] = row;
      positions[i + 1] = col;
      positions[i + 2] = 0;
    }
  }
  return {
    kind: "fill",
    side: "left",
    colCount: cols,
    chainages: Array.from({ length: rows }, (_v, row) => row),
    positions,
    groundZ: new Float64Array(rows * cols),
  };
}

/** 절취 영역 — 직사각형 x∈[x0,x1], y∈[y0,y1] (닫힘점 포함). */
function rectCurve(x0, x1, y0, y1) {
  return {
    setChainageM: (x0 + x1) / 2,
    source: "slope-projected",
    role: "inlet",
    side: "left",
    planZ: 10,
    loops: [
      [
        [x0, y0, 10],
        [x1, y0, 10],
        [x1, y1, 10],
        [x0, y1, 10],
        [x0, y0, 10],
      ],
    ],
  };
}

function insideLoop(loop, x, y) {
  let hit = false;
  for (let i = 0, j = loop.length - 1; i < loop.length; j = i, i += 1) {
    const [xi, yi] = loop[i];
    const [xj, yj] = loop[j];
    if (yi > y !== yj > y && x < ((xj - xi) * (y - yi)) / (yj - yi) + xi) hit = !hit;
  }
  return hit;
}

function run(rows, cols, curve) {
  const ribbon = ribbonOf(rows, cols);
  const { ribbons, curves } = maskFillByPlanCurves([ribbon], [curve]);
  const cut = ribbons[0];
  const merged = curves.filter((c) => c.source === "cut-merged");
  const loops = merged.flatMap((c) => c.loops);
  let masked = 0;
  let covered = 0;
  const uncovered = [];
  if (cut.cellMask) {
    for (let row = 0; row < rows - 1; row += 1) {
      for (let col = 0; col < cols - 1; col += 1) {
        if (!cut.cellMask[row * (cols - 1) + col]) continue;
        masked += 1;
        const cx = row + 0.5;
        const cy = col + 0.5;
        if (loops.some((loop) => insideLoop(loop, cx, cy))) covered += 1;
        else uncovered.push([row, col]);
      }
    }
  }
  return {
    masked,
    covered,
    uncovered,
    loops: loops.map((loop) => ({
      n: loop.length,
      closed:
        loop.length > 1 &&
        loop[0][0] === loop[loop.length - 1][0] &&
        loop[0][1] === loop[loop.length - 1][1],
      points: loop.map(([x, y]) => [x, y]),
    })),
  };
}

const out = {
  // 직사각형 — 시작 모서리(첫 행 첫 열)가 살아야 4모서리 + 닫힘점 = 5.
  rect: run(12, 6, rectCurve(1.9, 7.1, -0.5, 3.4)),
  // 한 셀짜리 — 가장 작은 고리도 4모서리를 다 지킨다.
  single: run(6, 4, rectCurve(1.9, 3.1, 0.9, 2.1)),
};
process.stdout.write(JSON.stringify(out));