/* 459 노선 바뀜 — 진짜 TS(`logic/B05_Profile_Pipeline_Grade` 옮긴 시설 측점 · 427 세움 · planline 단계 ·
 * `common_util_route_follow` 구조물 맞춤 · 추가 측점 따라감)를 Node 로 돌림.
 * 입력 argv[2] JSON [{ op, ... }, …] · 표준출력 = 결과 한 벌씩.
 */
const fs = require("fs");
const path = require("path");
const { makeLoader } = require("./helper_ts_stub_loader.cjs");
const CATALOG = require("./helper_322_catalog_module.cjs");

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

const { loadTs: loadFull, load } = makeLoader({
  root: ROOT,
  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"));
    if (request.startsWith(".")) return loadFull(path.join(path.dirname(full), `${request}.ts`));
    throw new Error(`stub 없음: ${request} (${path.relative(ROOT, full)})`);
  },
});
const loadTs = (file) => load(file); // 뿌리 기준 상대 경로

const grade = loadTs("B05_Profile/logic/B05_Profile_Pipeline_Grade.ts");
const carry = loadTs("B05_Profile/logic/B05_Profile_Grade_Carry.ts");
const follow = loadTs("common_util/common_util_route_follow.ts");
const xy = (line) => line.map(([x, y]) => ({ x, y }));

const cases = JSON.parse(fs.readFileSync(process.argv[2], "utf8"));
const out = cases.map((item) => {
  switch (item.op) {
    case "moved":
      return grade.routeMovedStations(item.stations, xy(item.oldXy), xy(item.newXy));
    case "userMoves":
      return grade.userMoves(item.stations, new Map(Object.entries(item.spots)));
    case "planline": {
      // 계산 묶음 planline 단계 그대로 — 저장 기준(storedPvi) · 새 지반 · 측점 · follow 출력
      const stage = grade.createPlanlineStage({
        savedBase: () => item.base,
        savedLine: () => item.oldXy,
        storedPvi: () => item.base.basePvi,
      });
      const ctxOf = (stations, followed) => ({
        inputs: { route: {}, alignment: null, pipes: item.pipes ?? null, structures: null },
        out: {
          route: { line: item.newXy },
          ground: {
            stations: stations.map((s) => ({ ...s, ground: null })),
            longitudinal: { chainageM: item.chainage, z: item.ground },
          },
          follow: followed,
        },
      });
      // follow 단계가 따라가기만 한 자리를 남김(노선 초안 전 관 = `origin`)
      const followed = item.origin
        ? grade.createFollowStage({ savedLine: () => item.oldXy, saved: () => item.origin })({
            inputs: { route: {}, alignment: null, pipes: item.pipes ?? null, structures: null },
            before: {},
            out: { route: { line: item.newXy } },
          })
        : null;
      const result = stage(ctxOf(item.stations, followed));
      // 시설 없는 같은 측점 = 옮겨 붙인 꼭짓점(427 세움 전) — 파이썬 `seat_route_moved` 입력
      const plain = stage(
        ctxOf(
          (item.homeStations ?? item.stations).map((s) => ({ ...s, kind: "grid", id: null })),
          null,
        ),
      );
      // 노선 저장 뒤(바뀐 구간 세움까지) — 사용자 옮김 전 기준 · 파이썬 관 저장 차례 입력
      const home = grade.seatRouteMoved(
        {
          chainage: item.chainage,
          ground: item.ground,
          policy: item.base.policy,
          basePvi: plain.basePvi,
        },
        item.homeBorn ?? [],
      );
      return { basePvi: result.basePvi, carried: plain.basePvi, home };
    }
    case "carry":
      return carry.carryBase(xy(item.oldXy), xy(item.newXy), item.oldBase, item.groundPvi);
    case "rebase":
      return follow.rebaseStructureDraft(item.draft, item.before, item.after);
    case "outside": {
      // 노선 밖 판정 · 따라감 표시 · 측점 계획에서 뺌(459 덧)
      const line = xy(item.line);
      const station = loadTs("common_util/common_util_structure_station.ts");
      const pipes = follow.projectPipePoints(item.pipes, line);
      const structures = follow.followStructures(item.structures, line).map(({ item: s }) => s);
      return {
        flags: item.points.map(([x, y]) => follow.routeOutside(line, { x, y })),
        pipes: pipes.map((p) => [p.id, p.chainage_m, p.outside ?? false]),
        structures: structures.map((s) => [s.structure_id, s.chainage_m, s.outside ?? false]),
        planned: station.planStations(pipes, structures, []).map((m) => m.chainage_m),
      };
    }
    case "plus":
      return follow.followPlusStations(item.list, xy(item.from), xy(item.to));
    default:
      throw new Error(`op 없음: ${item.op}`);
  }
});
process.stdout.write(JSON.stringify(out));