/* 365-1 헬퍼 — 노선 초안 동안 측점 갈아끼움은 캐시(메모리)만 · 세션 상세 = 저장 노선 그대로.
 *   node helper_365_swap.mjs <묶음.mjs>
 * vite ssr 로 묶은 진짜 모듈(helper_365_swap_entry.ts) · 표준출력 JSON 한 벌. 짝 = test_365_page_pipeline.py.
 */
import { pathToFileURL } from "node:url";

const store = () => {
  const m = new Map();
  return {
    getItem: (k) => (m.has(k) ? m.get(k) : null),
    setItem: (k, v) => m.set(k, String(v)),
    removeItem: (k) => m.delete(k),
    key: (i) => [...m.keys()][i] ?? null,
    get length() {
      return m.size;
    },
    clear: () => m.clear(),
  };
};
globalThis.window = globalThis;
globalThis.sessionStorage = store();
globalThis.localStorage = store();
const any = new Proxy(function () {}, {
  get: (_t, k) => (k === Symbol.toPrimitive ? () => 0 : any),
  apply: () => any,
  construct: () => any,
});
globalThis.document = any;
globalThis.requestAnimationFrame = (run) => setTimeout(run, 0);

const m = await import(pathToFileURL(process.argv[2]).href);
const P = "p365";
const R = 9;
localStorage.setItem("frd_current_project_id", P);

const section = (chainage_m, kind) => ({
  station_id: `station_${String(Math.round(chainage_m * 1000)).padStart(12, "0")}`,
  chainage_m,
  label: "",
  kind,
  center_z: 100,
  azimuth_deg: 90,
  center_x: chainage_m,
  center_y: 0,
  frame: { left_xy: [0, 1] },
  samples: [{ offset_m: 0, elevation_m: 100, valid: true }],
  design: { design_elevation_m: 101 },
});
const saved = {
  longitudinal: {
    length_m: 60,
    stations: [],
    profile_alignment: { policy: { station_interval_m: 20 } },
  },
  cross_sections: [
    section(0, "bp"),
    section(20, "regular"),
    section(40, "regular"),
    section(60, "ep"),
  ],
};
const station = (key, chainageM, kind) => ({
  key,
  chainageM,
  x: chainageM,
  y: 0,
  azimuthDeg: 90,
  left: [0, 1],
  kind,
  id: null,
  ground: { centerZ: 99, left: [{ offsetM: 0.5, z: 99.1 }], right: [{ offsetM: 0.5, z: 98.9 }] },
  planRadiusM: null,
  curveOuterSide: null,
  curveWideningM: null,
});
const list = (...at) =>
  at.map((c, i) =>
    station(
      i === 0 ? "end:BP" : i === at.length - 1 ? "end:EP" : `grid:${c}`,
      c,
      i === 0 || i === at.length - 1 ? "end" : "grid",
    ),
  );
const chainages = (detail) => detail?.cross_sections.map((s) => s.chainage_m) ?? null;
const shop = m.useDesignStore(P, null);

m.writeState("section-detail", saved, P, R);
await m.loadSectionDetail(P, R); // 세션 한 벌 → 캐시
const out = {};

// 노선 초안 동안 — 측점 하나 늘어난 목록
shop.set("routeDraft", { nodes: [], rev: 1 });
const draft = await m.swapSectionStations(P, R, list(0, 20, 30, 40, 60));
out.draft = {
  swapped: draft !== null,
  cache: chainages(await m.loadSectionDetail(P, R)),
  session: chainages(m.readState("section-detail", P, R)),
};

// 초안 없음(저장 노선) — 갈아끼움이 세션까지
shop.set("routeDraft", null);
const plain = await m.swapSectionStations(P, R, list(0, 20, 50, 60));
out.saved = {
  swapped: plain !== null,
  cache: chainages(await m.loadSectionDetail(P, R)),
  session: chainages(m.readState("section-detail", P, R)),
};
process.stdout.write(JSON.stringify(out));
process.exit(0);