/* 380-3 노선 따라간 사토장 · 토취장(site) = 새 노선 일반 측점 중 가장 가까운 곳 — 진짜
 * `common_util_route_follow` · `common_util_structure_station` 을 Node 로 돌림. 입력 argv[2] JSON · 표준출력 JSON.
 */
const fs = require("fs");
const path = require("path");
const { makeLoader } = require("./helper_ts_stub_loader.cjs");

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

function loadTs(file, stubs = {}) {
  return makeLoader({
    root: ROOT,
    cache: false,
    requireFor: (full) => (request) => {
      if (stubs[request]) return stubs[request];
      throw new Error(`stub 없음: ${request} (${file})`);
    },
  }).loadTs(path.join(ROOT, file));
}

const input = JSON.parse(fs.readFileSync(process.argv[2], "utf8"));
const station = loadTs("common_util/common_util_structure_station.ts", {
  "./common_util_structure_catalog": require("./helper_322_catalog_module.cjs"),
});
const follow = loadTs("common_util/common_util_route_follow.ts", {
  "./common_util_structure_station": station,
});
const out = {
  grid: input.grids.map(([total, interval]) => station.gridStations(total, interval)),
  snap: input.snaps.map(([value, stations]) => station.snapExistingStation(value, stations)),
  follow: follow
    .followStructures(input.items, input.line, undefined, input.interval)
    .map((entry) => entry.item.chainage_m),
  plain: follow.followStructures(input.items, input.line).map((entry) => entry.item.chainage_m),
};
process.stdout.write(JSON.stringify(out));