/* 452 헬퍼 — B06 `stationKeysOf` 열쇠를 JSON 으로.
 *   node helper_452_keys.mjs <묶음.mjs> <입력.json>
 * 입력 = { sections: [{chainage_m, kind}], structures: [{structure_id, chainage_m, start_m, end_m}], interval }.
 */
import { readFileSync } from "node:fs";
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;

const [bundlePath, inputPath] = process.argv.slice(2);
const m = await import(pathToFileURL(bundlePath).href);
const input = JSON.parse(readFileSync(inputPath, "utf8"));
m.useStructureIds("p452", input.structures);
const sections = input.sections.map((s) => ({ station_id: `s${s.chainage_m}`, samples: [], ...s }));
process.stdout.write(JSON.stringify(m.stationKeysOf("p452", sections, input.interval)));