/* 462 B05 · B06 한 페이지 시설 줄 한 벌(요구 271-5) — 진짜 `design_facility_lane` · 관 id 장부 · 측점 계획 ·
 * 관 따라감 · 가게를 Node 로 돌려 JSON 한 줄(`test_271_facility_lane.py` 가 판정). 종단도는 가짜(받은 것 기록).
 *   node helper_271_facility_lane.cjs
 */
const fs = require("fs");
const path = require("path");
const ROOT = path.join(__dirname, "..", "..");
const { makeLoader } = require("./helper_ts_stub_loader.cjs");
const CATALOG = require(path.join(__dirname, "helper_322_catalog_module.cjs"));

function memoryStorage() {
  const map = new Map();
  return {
    getItem: (k) => (map.has(k) ? map.get(k) : null),
    setItem: (k, v) => map.set(k, String(v)),
    removeItem: (k) => map.delete(k),
    key: (i) => [...map.keys()][i] ?? null,
    get length() {
      return map.size;
    },
  };
}
globalThis.window = { sessionStorage: memoryStorage(), localStorage: memoryStorage() };
globalThis.sessionStorage = globalThis.window.sessionStorage;
globalThis.localStorage = globalThis.window.localStorage;

const anyModule = (extra = {}) =>
  new Proxy(extra, { get: (t, key) => (key in t ? t[key] : () => undefined) });
const STUBS = {
  "config_frontend.ts": anyModule({
    CURRENT_PROJECT_ID_KEY: "frd_current_project_id",
    API_BASE_URL: "",
    API_TIMEOUT_MS: 1000,
    PIPE_TYPES: [],
  }),
  "ui_template_elements.ts": anyModule(),
  "B04_PreProcess_Api_Fetch.ts": anyModule(),
  // 소단 사본(467) — 끌어오는 줄이 import.meta 를 써 이 로더로 못 읽음 · 소단 몫은 test_272_berm_source(vite 묶음)
  "B06_Section_UI_Page_Persist.ts": anyModule({ bermSpansFromStructures: () => [] }),
};

const resolve = (base) =>
  [base, `${base}.ts`, path.join(base, "index.ts")].find(
    (p) => fs.existsSync(p) && fs.statSync(p).isFile(),
  ) ?? `${base}.ts`;
const { loadTs } = makeLoader({
  root: ROOT,
  interop: true,
  fileStub: (full) => STUBS[path.basename(full)],
  requireFor: (full) => (request) => {
    if (CATALOG.isCatalogRequest(request)) return CATALOG;
    if (request.endsWith(".json"))
      return JSON.parse(fs.readFileSync(path.join(path.dirname(full), request), "utf8"));
    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)));
  },
});

const design = path.join(ROOT, "A00_Common", "design");
const { createFacilityLane } = loadTs(path.join(design, "design_facility_lane.ts"));
const ids = loadTs(path.join(design, "design_pipe_ids.ts"));
const { useDesignStore } = loadTs(path.join(design, "design_store.ts"));
const { readState } = loadTs(path.join(ROOT, "A00_Common", "b_page_state.ts"));
const TYPES = JSON.parse(
  fs.readFileSync(path.join(ROOT, "resources", "master_template", "구조물정의.json"), "utf8"),
).types;

/** 가짜 종단도 — 받은 것 · 편집 옮김 기록. */
function fakeProfile() {
  const got = {
    structures: null,
    stations: null,
    minCover: null,
    types: 0,
    resets: [],
    stationWrites: 0,
  };
  return {
    got,
    setStructureTypes: (types) => (got.types = types.length),
    setStructures: (next) => (got.structures = next),
    setIrregularStations: (stations) => ((got.stations = stations), (got.stationWrites += 1)),
    setMinCoverPipes: (pipes) => (got.minCover = pipes.map((p) => p.chainage_m)),
    resetStationEdit: (from, to) => got.resets.push([from, to ?? null]),
  };
}
const book = (projectId) => readState("pipe-ids", projectId) ?? { next: 1, ids: [] };
const wall = (id, at) => ({
  structure_id: id,
  type_id: "retaining_wall",
  placement: "interval",
  chainage_m: at,
  start_m: at - 5,
  end_m: at + 5,
  options: {},
});
const markView = (lane) => lane.marks().map((m) => [m.structure_id, m.type_id, m.chainage_m]);
const stationView = (lane) => lane.stations().map((s) => [s.chainage_m, s.id]);

const out = {};

// ① R3 뒤집기 — B06 만 연 채 351 관 → 360 옮김 → 버림 → 카드가 351 관 id 를 물음 → 다시 실음
{
  const P = "P271-r3";
  ids.usePipeIds(P);
  const profile = fakeProfile();
  const lane = createFacilityLane(P, () => profile);
  lane.setTypes(TYPES);
  lane.set({ structures: [], pipes: [{ id: "X", chainage_m: 351, facility: "pipe" }] }, false);
  const first = ids.pipeIdAt(351, P);
  ids.followMovedPipe(P, 351, 360); // B06 movePipeTo
  lane.set({ pipes: [{ id: "X", chainage_m: 360, facility: "pipe" }] });
  const moved = ids.pipeIdAt(360, P);
  const ghost = ids.pipeIdAt(351, P); // 버린 뒤 다시 받기 전 카드가 물음(헛 id)
  lane.set({ pipes: [{ id: "X", chainage_m: 351, facility: "pipe" }] }, false); // 목록 다시 실음
  out.r3 = {
    first,
    moved,
    ghostBeforeReload: ghost !== first,
    after: book(P).ids,
    afterId: ids.pipeIdAt(351, P),
    marks: markView(lane),
  };
}

// ② 같은 조작 — B05 먼저 듣는 중(listener 처음부터) 대 B06 먼저(끝에 B05 가 읽음)
function scenario(P, listenFromStart) {
  ids.usePipeIds(P);
  const profile = fakeProfile();
  const lane = createFacilityLane(P, () => profile);
  const heard = [];
  const listen = () => lane.onChange(() => heard.push(stationView(lane).length));
  if (listenFromStart) listen();
  lane.setTypes(TYPES);
  lane.setStored([wall("w1", 100)]);
  lane.set(
    {
      structures: [wall("w1", 100)],
      pipes: [
        { id: "A", chainage_m: 60, facility: "pipe" },
        { id: "B", chainage_m: 200, facility: "pipe" },
      ],
    },
    false,
  );
  // B06 폼 — 구조물 옮김 · 관 하나 넣음(새 관 id 없음) · 관 옮김
  lane.set({ structures: [wall("w1", 140)] });
  lane.set({
    pipes: [
      { id: "A", chainage_m: 60, facility: "pipe" },
      { chainage_m: 120, facility: "pipe" },
      { id: "B", chainage_m: 200, facility: "pipe" },
    ],
  });
  ids.followMovedPipe(P, 200, 230);
  lane.set({
    pipes: [
      { id: "A", chainage_m: 60, facility: "pipe" },
      { chainage_m: 120, facility: "pipe" },
      { id: "B", chainage_m: 230, facility: "pipe" },
    ],
  });
  // 배수유역도가 뒤늦게 같은 목록을 알림(B05 판)
  lane.set({
    pipes: [
      { id: "A", chainage_m: 60, facility: "pipe" },
      { chainage_m: 120, facility: "pipe" },
      { id: "B", chainage_m: 230, facility: "pipe" },
    ],
  });
  if (!listenFromStart) listen();
  const ledger = book(P).ids;
  const markIds = lane.marks().map((m) => m.structure_id);
  return {
    marks: markView(lane).map(([id, type, at]) => [id.startsWith("pipe-") ? "pipe" : id, type, at]),
    stations: stationView(lane).map(([at]) => at),
    minCover: profile.got.minCover,
    profileMarks: profile.got.structures.length === lane.marks().length,
    profileStations: JSON.stringify(profile.got.stations) === JSON.stringify(lane.stations()),
    ghostIds: ledger.filter((entry) => !markIds.includes(entry.id)).length,
    resets: profile.got.resets,
    heardB05: listenFromStart ? heard.length : null,
  };
}
out.b05First = scenario("P271-b05", true);
out.b06First = scenario("P271-b06", false);

// ③ 노선 따라감(가게 씀 + follow) = 편집 안 옮김 · 다시 실음(같은 목록) = 안 옮김 · 측점 다시 안 씀
{
  const P = "P271-follow";
  ids.usePipeIds(P);
  const profile = fakeProfile();
  const lane = createFacilityLane(P, () => profile);
  const store = useDesignStore(P, null);
  lane.setTypes(TYPES);
  lane.set({ structures: [], pipes: [{ id: "A", chainage_m: 80, facility: "pipe" }] }, false);
  store.set("pipes", [{ id: "A", chainage_m: 95, source: "user", facility: "pipe" }]);
  store.set("structures", [wall("w9", 150)]);
  lane.follow();
  const followed = {
    stations: stationView(lane).map(([at]) => at),
    resets: [...profile.got.resets],
  };
  const writes = profile.got.stationWrites;
  lane.set({ structures: [wall("w9", 150)] }, false); // 숨었던 B05 가 다시 보이며 같은 목록을 실음
  const reshown = { resets: profile.got.resets.length, writes: profile.got.stationWrites - writes };
  lane.set({ structures: [wall("w9", 170)] }); // 사용자 옮김 = 옮김
  out.follow = { followed, reshown, userMove: profile.got.resets };
}

console.log(JSON.stringify(out));