/* PLAN 190-1 단위검증 헬퍼 — B06 집수정 판정면 = 부재 외곽 가상 사각형(세월교 측벽 꼴).
 * 화면 TS 를 그 자리에서 트랜스파일해 Node 로 돌림 · 결과 = 표준출력 JSON 한 벌.
 * 입력 = `fixtures/b07_cross_overlay_sections.json` 배관 측점 + design.inlet_structure 강제(U · L · I).
 * 짝 = `test_190_1_basin_pick.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 STUBS = {
  "@ui/ui_template_toast": { showToast: () => undefined },
  "@ui/ui_template_elements": { showToast: () => undefined },
};

// ── SVG 그릇 흉내 — 오버레이가 쓰는 만큼만 ─────────────────────────────────
class FakeNode {
  constructor(tag) {
    this.tagName = String(tag).toUpperCase();
    this.children = [];
    this.attrs = {};
    this.listeners = {};
    this.textContent = "";
    this._classes = new Set();
    const self = this;
    this.classList = {
      add: (...names) => names.forEach((n) => self._classes.add(n)),
      toggle: (name, force) => {
        const on = force === undefined ? !self._classes.has(name) : !!force;
        on ? self._classes.add(name) : self._classes.delete(name);
        return on;
      },
      contains: (name) => self._classes.has(name),
    };
  }
  append(...kids) {
    kids.forEach((k) => this.children.push(k));
  }
  appendChild(kid) {
    this.children.push(kid);
    return kid;
  }
  setAttribute(name, value) {
    this.attrs[name] = String(value);
    if (name === "class") this._classes = new Set(String(value).split(/\s+/).filter(Boolean));
  }
  getAttribute(name) {
    return this.attrs[name] ?? null;
  }
  addEventListener(type, fn) {
    (this.listeners[type] ??= []).push(fn);
  }
  click() {
    let stopped = false;
    const event = { stopPropagation: () => (stopped = true), preventDefault: () => {} };
    (this.listeners.click ?? []).forEach((fn) => fn(event));
    return stopped;
  }
}
globalThis.document = {
  createElement: (tag) => new FakeNode(tag),
  createElementNS: (_ns, tag) => new FakeNode(tag),
};

function loadTs(file) {
  const full = path.resolve(file);
  if (cache.has(full)) return cache.get(full);
  if (full.endsWith(".json")) {
    const data = JSON.parse(fs.readFileSync(full, "utf8"));
    cache.set(full, data);
    return data;
  }
  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
    compilerOptions: {
      module: ts.ModuleKind.CommonJS,
      target: ts.ScriptTarget.ES2020,
      esModuleInterop: true,
    },
  }).outputText;
  const box = { exports: {} };
  cache.set(full, box.exports);
  const localRequire = (request) => {
    if (STUBS[request]) return STUBS[request];
    const alias = { "@util/": "common_util", "@ui/": "ui_template", "@config/": "config" };
    for (const [prefix, dir] of Object.entries(alias))
      if (request.startsWith(prefix))
        return loadTs(resolve(path.join(ROOT, dir, request.slice(prefix.length))));
    return loadTs(resolve(path.join(path.dirname(full), request)));
  };
  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
  cache.set(full, box.exports);
  return box.exports;
}
const resolve = (base) =>
  [base, `${base}.ts`, path.join(base, "index.ts")].find(
    (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
  ) ?? `${base}.ts`;

const B06 = (f) => path.join(ROOT, "B06_Section", `${f}.ts`);
const { computeStoredLayouts } = loadTs(B06("B06_Section_Structure_Layouts"));
const { appendCulvertOverlay } = loadTs(B06("B06_Section_UI_Cross_Culvert"));
const { outlineBox } = loadTs(B06("B06_Section_UI_Cross_Culvert_Types"));

const fixture = JSON.parse(
  fs.readFileSync(path.join(__dirname, "fixtures", "b07_cross_overlay_sections.json"), "utf8"),
);
const sections = fixture.cross_sections;
const pipeSection = sections.find((s) => s.culvert && !s.culvert.hidden_pipe);
const BASIN_TIP = "유입 집수정 선택 — 조정창에서 구조물 형식 선택";
const X = (o) => -o * 10;
const Y = (e) => -e * 10;
const pointsOf = (node) => node.attrs.points.split(" ").map((pair) => pair.split(",").map(Number));

function basinCase(shape) {
  const target = { ...pipeSection, design: { ...pipeSection.design, inlet_structure: shape } };
  const layout = computeStoredLayouts(target, sections).culvert;
  const layer = new FakeNode("g");
  const picked = [];
  const setter = appendCulvertOverlay(layer, layout, X, Y, (key) => picked.push(key));
  const hits = layer.children.filter((n) => n.classList.contains("b06-chart__culvert-revet-hit"));
  const basinHits = hits.filter((n) => n.children[0]?.textContent === BASIN_TIP);
  const all = layout.basin.parts.flatMap((part) => part.points);
  // 기대 외곽(화면 좌표) — 부재 전 꼭짓점의 최소 · 최대
  const xs = all.map((p) => X(p.offset));
  const ys = all.map((p) => Y(p.elevation));
  const expect = {
    minX: Math.min(...xs),
    maxX: Math.max(...xs),
    minY: Math.min(...ys),
    maxY: Math.max(...ys),
  };
  const got = basinHits.length ? pointsOf(basinHits[0]) : [];
  const gotBox = got.length
    ? {
        minX: Math.min(...got.map(([px]) => px)),
        maxX: Math.max(...got.map(([px]) => px)),
        minY: Math.min(...got.map(([, py]) => py)),
        maxY: Math.max(...got.map(([, py]) => py)),
      }
    : null;
  const stopped = basinHits.length ? basinHits[0].click() : false;
  // 그림 모양은 그대로 — 집수정 부재 폴리곤 = 부재 점열 그대로 · 고르면 부재 강조
  const drawn = layer.children.filter((n) => n.classList.contains("b06-chart__culvert-basin"));
  const drawnSame = drawn.every(
    (n, i) =>
      n.attrs.points ===
      layout.basin.parts[i].points.map((p) => `${X(p.offset)},${Y(p.elevation)}`).join(" "),
  );
  setter("inlet");
  const activeOnInlet = drawn.every((n) => n.classList.contains("is-active"));
  return {
    shape: layout.basin.shape,
    parts: layout.basin.parts.length,
    basinHits: basinHits.length,
    corners: got.length,
    expect,
    got: gotBox,
    picked,
    stopped,
    lastHitIsBasin: hits[hits.length - 1] === basinHits[0],
    drawnParts: drawn.length,
    drawnSame,
    activeOnInlet,
  };
}

const out = { U: basinCase("U"), L: basinCase("L"), I: basinCase("I") };
// 세월교 측벽과 같은 함수 — ㄴ 점열의 외곽
const ell = [
  { offset: 0, elevation: 0 },
  { offset: 0.3, elevation: 0 },
  { offset: 0.3, elevation: 2 },
  { offset: 1.5, elevation: 2 },
  { offset: 1.5, elevation: 2.3 },
  { offset: 0, elevation: 2.3 },
];
out.outline = outlineBox(ell);
// 판정면 없으면(onSelect 없음 · B07) 집수정 판정면도 없음
{
  const target = { ...pipeSection, design: { ...pipeSection.design, inlet_structure: "U" } };
  const layout = computeStoredLayouts(target, sections).culvert;
  const layer = new FakeNode("g");
  appendCulvertOverlay(layer, layout, X, Y);
  out.noSelectHits = layer.children.filter((n) =>
    n.classList.contains("b06-chart__culvert-revet-hit"),
  ).length;
}

process.stdout.write(JSON.stringify(out));