/* 273-2 초안 측점 — 진짜 `B06_Section_Section_Drafts.ts` + 진짜 측점 규칙(`common_util_structure_station`)을
 * 가짜 서버 · 초안으로 돌림. 표준출력 JSON 한 벌.
 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
const CATALOG = require("./helper_322_catalog_module.cjs"); // 구조물 표(322-1)

const ROOT = path.join(__dirname, "..", "..");

function loadTs(file, stubs = {}) {
  const js = ts.transpileModule(fs.readFileSync(path.join(ROOT, file), "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
  }).outputText;
  const box = { exports: {} };
  new Function("exports", "module", "require", js)(box.exports, box, (name) => {
    if (CATALOG.isCatalogRequest(name)) return CATALOG;
    if (!stubs[name]) throw new Error(`stub 없음: ${name} (${file})`);
    return stubs[name];
  });
  return box.exports;
}

const station = loadTs("common_util/common_util_structure_station.ts");
let draftPipes = null;
const asked = [];
let slow = false;
const types = [
  {
    type_id: "pipe",
    group: "A",
    placement: "point",
    managed_by: "pipe_points",
    name: "배관",
    options: [],
  },
];
const drafts = loadTs("B06_Section/B06_Section_Section_Drafts.ts", {
  "../B04_PreProcess/B04_PreProcess_Api_Fetch": {
    fetchDetailPipePoints: async () => ({ pipe_points: [{ chainage_m: 95.38, facility: "pipe" }] }),
  },
  "../B05_Profile/B05_Profile_Api_Structures": {
    fetchStructures: async () => ({ structures: [] }),
    fetchStructureTypes: async () => types,
    readPendingStructures: () => null,
  },
  "../B05_Profile/B05_Profile_Api_Pipes_Draft": { readPendingPipes: () => draftPipes },
  "@util/common_util_culvert_sets": {
    registryDefaults: () => ({ pipe: { pipe_kind: "파형강관", pipe_diameter_mm: 800 } }),
    buildCulvertSets: (points) => new Map(points.map((p) => [p.chainage_m, { kind: "pipe" }])),
    attachCulvertSets: (sections, sets) => {
      for (const [at] of sets) {
        const hit = sections.find((s) => Math.abs(s.chainage_m - at) < 0.005);
        if (hit) hit.culvert = true;
      }
    },
  },
  "../common_util/common_util_structure_station": station,
  // 형상 얹기 한 벌(323-4) 흉내 — 관 자리 측점에 관 그림
  "@util/common_util_structure_attach": {
    attachShapes: (sections, pipes) => {
      for (const pipe of pipes) {
        const hit = sections.find((s) => Math.abs(s.chainage_m - pipe.chainage_m) < 0.005);
        if (hit) hit.culvert = true;
      }
    },
  },
  // 측점 열쇠 세우기(344-3) — 이 시험 몫 아님
  "./B06_Section_Station_Keys": { useStationKeys: () => {}, useStationOwners: () => {} },
  "./B06_Section_Api_Fetch": {
    previewStructureSections: async (_projectId, chainages) => {
      asked.push(chainages);
      if (slow) await new Promise((resolve) => setTimeout(resolve, 50));
      return chainages.map((c) => ({
        chainage_m: c,
        kind: "irregular",
        station_id: `s${c}`,
        samples: [],
      }));
    },
  },
});

/** 서버 상세 — 격자 0 · 20 · 40 · 100 + 옛 관 측점 95.38. */
const detailOf = () => ({
  cross_sections: [0, 20, 40, 95.38, 100].map((c) => ({
    chainage_m: c,
    kind: c === 95.38 ? "irregular" : c === 0 ? "bp" : "regular",
    station_id: `s${c}`,
    samples: [],
  })),
});
const chainages = (detail) => detail.cross_sections.map((s) => s.chainage_m);

(async () => {
  const out = {};
  const detail = detailOf();
  draftPipes = [{ chainage_m: 95, facility: "pipe", source: "user" }]; // 95.38 → 95
  await drafts.withDraftStations(detail, "P", 1);
  await drafts.withDraftShapes(detail, "P"); // 그림 자료(323-4 · `Section_Store` 차례)
  const preview = detail.cross_sections.find((s) => s.chainage_m === 95);
  out.moved = {
    chainages: chainages(detail),
    asked: asked.splice(0),
    preview: { preview: preview.preview, structure: preview.structure, culvert: preview.culvert },
  };
  await drafts.withDraftStations(detail, "P", 1);
  out.again = { chainages: chainages(detail), asked: asked.splice(0) };
  draftPipes = null;
  await drafts.withDraftStations(detail, "P", 1);
  out.cleared = { chainages: chainages(detail) };

  const race = detailOf();
  slow = true;
  draftPipes = [{ chainage_m: 96, facility: "pipe", source: "user" }];
  const first = drafts.withDraftStations(race, "P", 1); // 늦게 끝남
  await new Promise((resolve) => setTimeout(resolve, 5));
  slow = false;
  draftPipes = [{ chainage_m: 120, facility: "pipe", source: "user" }];
  await drafts.withDraftStations(race, "P", 1);
  await first;
  out.race = { chainages: chainages(race) };
  process.stdout.write(JSON.stringify(out));
})().catch((error) => {
  process.stderr.write(String(error && error.stack ? error.stack : error));
  process.exit(1);
});