/* 139-3 세월교 수평 헬퍼 — `_Cross_Ford_Geom`(computeFordLayout · fordDropOf)를 그 자리에서 트랜스파일해
 * 73-4 픽스처 세월교(173.087)로 돌림. 짝 = `test_139_3_ford_level.py`.
 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));

const ROOT = path.join(__dirname, "..", "..");
const cache = new Map();
const noop = new Proxy({}, { get: () => () => "" });

function loadTs(file) {
  const full = path.resolve(file);
  if (cache.has(full)) return cache.get(full);
  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
  }).outputText;
  const box = { exports: {} };
  cache.set(full, box.exports);
  const localRequire = (request) => {
    if (request.startsWith("@ui/") || request.startsWith("@config/")) return noop;
    if (request.startsWith("@util/"))
      return loadTs(path.join(ROOT, "common_util", `${request.slice(6)}.ts`));
    return loadTs(path.join(path.dirname(full), `${request}.ts`));
  };
  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
  cache.set(full, box.exports);
  return box.exports;
}

const { computeFordLayout, fordAdjustOf } = loadTs(
  path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Ford_Geom.ts"),
);
const sections = JSON.parse(
  fs.readFileSync(path.join(__dirname, "fixtures", "b06_73_4_body_guard_sections.json"), "utf8"),
).cross_sections;
const ford = sections.find((s) => s.ford);
const r3 = (v) => Math.round(v * 1000) / 1000;
const run = (stored) => {
  const layout = computeFordLayout(ford, ford.samples, fordAdjustOf(stored));
  return {
    slab: layout.sides.map((s) => r3(s.slabTopElevation)),
    pipeEnds: layout.sides.map((s) => r3(s.pipeEnd.elevation)),
    tops: layout.sides.map((s) => r3(s.top.elevation)),
    heights: layout.sides.map((s) => r3(s.heightM)),
    wallX: layout.sides.map((s) => r3(s.top.offset)),
    dropM: r3(layout.adjust.dropM),
  };
};
const wall = (o) => ({ heightM: null, lateralM: 0, slopeM: 0, ...o });
process.stdout.write(
  JSON.stringify({
    base: run(null),
    drop: run({ inlet: wall(), outlet: wall(), dropM: 0.4 }),
    up: run({ inlet: wall(), outlet: wall(), dropM: -1 }),
    lateral: run({ inlet: wall({ lateralM: 1 }), outlet: wall({ lateralM: -2 }), dropM: 0 }),
    // 옛 저장 — 유입 높이 + 0.6 · 유출 대각 1.2(= 수직 1.0) → 평균 내림 0.8 언저리
    old: run({ inlet: wall({ heightM: 2.1 }), outlet: wall({ slopeM: 1.2 }) }),
  }),
);