/* PLAN 317 단위검증 헬퍼 — 구조물 측점에서 종류를 바꾸면 그 측점 횡단을 새로 뜬 것으로(저장분은 빼 둠).
 * `withDraftStations` 를 Node 로 돌림 · 서버 부르는 모듈은 흉내 · 결과 = 표준출력 JSON 한 벌.
 * 짝 = `test_317_kind_change_station.py`.
 */
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, "..", "..");
const state = { draftPipes: null, draftStructures: null, savedPipes: [], savedStructures: [] };
const STUBS = {
  "../B04_PreProcess/B04_PreProcess_Api_Fetch": {
    fetchDetailPipePoints: async () => ({ pipe_points: state.savedPipes }),
  },
  "../B05_Profile/B05_Profile_Api_Structures": {
    fetchStructures: async () => ({ structures: state.savedStructures }),
    fetchStructureTypes: async () => [],
    readPendingStructures: () => state.draftStructures,
  },
  "../B05_Profile/B05_Profile_Api_Pipes_Draft": { readPendingPipes: () => state.draftPipes },
  "./B06_Section_Api_Fetch": {
    previewStructureSections: async (_p, chainages) =>
      chainages.map((at) => ({ chainage_m: at, kind: "irregular", design: { fresh: true } })),
  },
};
// 페이지 자료 줄(386-2) — 진짜 design_page_data 가 같은 서버 흉내를 부름
STUBS["../../B04_PreProcess/B04_PreProcess_Api_Fetch"] =
  STUBS["../B04_PreProcess/B04_PreProcess_Api_Fetch"];
STUBS["../../B05_Profile/B05_Profile_Api_Structures"] =
  STUBS["../B05_Profile/B05_Profile_Api_Structures"];
const cache = new Map();
const load = (file) => {
  if (cache.has(file)) return cache.get(file);
  const js = ts.transpileModule(fs.readFileSync(file, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
  }).outputText;
  const box = { exports: {} };
  cache.set(file, box.exports);
  const near = (m) => {
    if (CATALOG.isCatalogRequest(m)) return CATALOG;
    if (STUBS[m]) return STUBS[m];
    if (m.startsWith("@util/")) return load(path.join(ROOT, "common_util", `${m.slice(6)}.ts`));
    if (m.startsWith(".")) return load(path.join(path.dirname(file), `${m}.ts`));
    return new Proxy({}, { get: () => () => {} });
  };
  new Function("exports", "module", "require", js)(box.exports, box, near);
  return box.exports;
};

const drafts = load(path.join(ROOT, "B06_Section", "B06_Section_Section_Drafts.ts"));
const { forgetDraftStations } = drafts;
// 상세 맞춤 = 측점 계획 → 형상 얹기(`Section_Store.withDraftWalls` 와 같은 차례 · 323-4)
const withDraftStations = async (detail, projectId, routeId) => {
  await drafts.withDraftStations(detail, projectId, routeId);
  await drafts.withDraftShapes(detail, projectId);
};

const detail = {
  cross_sections: [
    { chainage_m: 0, kind: "regular", design: { old: true } },
    { chainage_m: 50, kind: "irregular", design: { old: true } },
  ],
};
const at50 = () => detail.cross_sections.find((s) => Math.abs(s.chainage_m - 50) < 0.01);
const snap = () => ({
  count: detail.cross_sections.length,
  fresh: Boolean(at50()?.design?.fresh),
  old: Boolean(at50()?.design?.old),
  preview: Boolean(at50()?.preview),
});

(async () => {
  state.savedPipes = [{ chainage_m: 50, facility: "ford_pavement" }];
  const out = {};
  state.draftPipes = [{ chainage_m: 50, facility: "ford_pavement", options: { ford_width_m: 3 } }];
  await withDraftStations(detail, "p1", 1);
  out.same_kind = snap();
  state.draftPipes = [{ chainage_m: 50, facility: "box_culvert" }];
  await withDraftStations(detail, "p1", 1);
  out.changed_kind = snap();
  state.draftPipes = [{ chainage_m: 50, facility: "ford_pavement" }];
  await withDraftStations(detail, "p1", 1);
  out.back_to_saved = snap();
  // 여러 번 바꿈 — 앞 종류 제원이 남아 겹치지 않음(317-3 · 미리 뜬 횡단은 한 벌을 다시 씀)
  const facilityKeys = () =>
    Object.keys(at50() ?? {})
      .filter((key) => ["culvert", "ford", "box", "ford_pavement"].includes(key))
      .sort();
  state.draftPipes = [{ chainage_m: 50, facility: "box_culvert" }];
  await withDraftStations(detail, "p1", 1);
  out.first_switch = facilityKeys();
  state.draftPipes = [{ chainage_m: 50, facility: "ford_bridge" }];
  await withDraftStations(detail, "p1", 1);
  out.second_switch = facilityKeys();
  forgetDraftStations("p1");
  process.stdout.write(JSON.stringify(out));
})().catch((error) => {
  process.stderr.write(String(error && error.stack ? error.stack : error));
  process.exit(1);
});