// 433-4 · 433-11 — 측점 갈아끼움(`swapCrossSections` · 진짜) · 횡단 엔진(`computeCrossDesign` · 진짜) ·
// 유토(`computeMassHaul` · 진짜). 인자 = 표준단면 json · 토량환산계수 json.
const fs = require("fs");
const path = require("path");
const ROOT = path.resolve(__dirname, "..", "..");
const ts = require(path.join(ROOT, "config", "node_modules", "typescript"));
const idOf = (m) => `station_${String(Math.round(m * 1000)).padStart(12, "0")}`;
const STUBS = {
  B05_Profile_Pipeline_Grade: { stationIdOf: idOf },
  B05_Profile_UI_Profile_Data: { toDesignProfile: () => ({}) },
};
const CATALOG = require("./helper_322_catalog_module.cjs");
const cache = new Map();
function load(full) {
  if (cache.has(full)) return cache.get(full).exports;
  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
  }).outputText;
  const box = { exports: {} };
  cache.set(full, box);
  const req = (r) => {
    if (CATALOG.isCatalogRequest(r)) return CATALOG; // 형상 얹기(Pipeline_Detail · 457)가 끌어감
    const name = r.split("/").pop();
    if (STUBS[name]) return STUBS[name];
    if (r.startsWith("@util/")) return load(path.join(ROOT, "common_util", `${r.slice(6)}.ts`));
    if (r.startsWith(".")) return load(path.resolve(path.dirname(full), `${r}.ts`));
    throw new Error(`stub 없음: ${r}`);
  };
  new Function("exports", "module", "require", js)(box.exports, box, req);
  return box.exports;
}
const swap = load(path.join(ROOT, "B06_Section/logic/B06_Section_Station_Swap.ts"));
const { computeCrossDesign } = load(path.join(ROOT, "common_util/common_util_cross_design.ts"));
const { computeMassHaul } = load(path.join(ROOT, "common_util/common_util_mass_haul.ts"));
const standard = JSON.parse(fs.readFileSync(process.argv[2], "utf8"));
const conversion = JSON.parse(fs.readFileSync(process.argv[3], "utf8"));

const st = (key, m, kind, ground = null) => ({
  key,
  chainageM: m,
  kind,
  x: m,
  y: 0,
  left: [0, 1],
  azimuthDeg: 90,
  planRadiusM: null,
  curveOuterSide: null,
  curveWideningM: 0,
  ground,
});

/* ── 433-4: R 바꿔 MC 측점이 움직임(curve:47.35 → curve:49.10) ── */
const mcSec = (m, kind) => ({
  station_id: idOf(m),
  chainage_m: m,
  kind,
  center_x: m,
  center_y: 0,
  frame: { left_xy: [0, 1] },
  samples: [],
  uphill_side: "left",
  design: { memo: `MY-EDIT@${m}` },
});
const mcDetail = {
  longitudinal: { stations: [], length_m: 100 },
  cross_sections: [
    mcSec(0, "bp"),
    mcSec(20, "regular"),
    mcSec(47.35, "curve"),
    mcSec(60, "regular"),
    mcSec(100, "ep"),
  ],
};
const mcOut = swap.swapCrossSections(
  mcDetail,
  [
    st("end:BP", 0, "end"),
    st("grid:1", 20, "grid"),
    st("curve:49.10", 49.1, "curve"),
    st("grid:3", 60, "grid"),
    st("end:EP", 101, "end"),
  ],
  ["end:BP", "grid:1", "curve:47.35", "grid:3", "end:EP"],
  20,
);
// 멀리(> CURVE_NEAR_M) 간 MC = 못 이음(새 측점 · 노선 밖)
const farOut = swap.swapCrossSections(
  mcDetail,
  [
    st("end:BP", 0, "end"),
    st("grid:1", 20, "grid"),
    st("curve:62.00", 62, "curve"),
    st("grid:3", 60, "grid"),
    st("end:EP", 100, "end"),
  ],
  ["end:BP", "grid:1", "curve:47.35", "grid:3", "end:EP"],
  20,
);

/* ── 433-11: 덧 측점 넣기 · 빼기 — 서버 표본(A) 대 브라우저 지형(B) ── */
const OFFSETS = [-12, -9, -6, -4, -2, 0, 2, 4, 6, 9, 12];
const groundA = (m, o) => 100 + 0.02 * m + 0.35 * o; // 서버 샘플링(저장 상세)
const groundB = (m, o) => groundA(m, o) + 0.6 * Math.sin(m / 7 + o / 3); // 브라우저 설계 지형
const planZ = (m) => 100.2 + 0.02 * m;
const samplesOf = (fn, m) =>
  OFFSETS.map((o) => ({ offset_m: o, elevation_m: fn(m, o), valid: true }));
const groundOf = (fn, m) => ({
  centerZ: fn(m, 0),
  left: OFFSETS.filter((o) => o > 0).map((o) => ({ offsetM: o, z: fn(m, o) })),
  right: OFFSETS.filter((o) => o < 0).map((o) => ({ offsetM: -o, z: fn(m, o) })),
});
const designOf = (samples, m) => ({
  ...computeCrossDesign(samples, planZ(m), {
    standard,
    groundType: "soil",
    sectionMode: "left_cut",
  }),
  design_elevation_m: planZ(m),
});
const baseKeys = [
  ["end:BP", 0, "end"],
  ["grid:1", 20, "grid"],
  ["grid:2", 40, "grid"],
  ["grid:3", 60, "grid"],
  ["end:EP", 80, "end"],
];
const kindOf = (kind, key) =>
  kind === "end" ? (key.endsWith("EP") ? "ep" : "bp") : kind === "grid" ? "regular" : "irregular";
const savedSec = ([key, m, kind]) => {
  const samples = samplesOf(groundA, m);
  return {
    station_id: idOf(m),
    chainage_m: m,
    kind: kindOf(kind, key),
    center_x: m,
    center_y: 0,
    center_z: groundA(m, 0),
    frame: { left_xy: [0, 1] },
    uphill_side: "left",
    samples,
    design: designOf(samples, m),
  };
};
const saved = {
  longitudinal: { stations: [], length_m: 80 },
  cross_sections: baseKeys.map(savedSec),
};
const savedKeys = baseKeys.map(([key]) => key);
// 브라우저 다시 셈 = 상세 표본으로 면적(Cross_Refresh 꼴)
const recross = (detail) =>
  detail.cross_sections.map((s) => ({ ...s, design: designOf(s.samples, s.chainage_m) }));
const cumulative = (sections) =>
  computeMassHaul(sections, conversion).points.map((p) => [
    p.chainage_m,
    Math.round(p.cumulative_volume_m3 * 1000) / 1000,
  ]);

const plusList = [...baseKeys.slice(0, 2), ["pipe:p30", 30, "pipe"], ...baseKeys.slice(2)];
const plusStations = plusList.map(([key, m, kind]) => st(key, m, kind, groundOf(groundB, m)));
const added = swap.swapCrossSections(saved, plusStations, savedKeys, 20);
const addedSections = recross(added.detail);
// 서버 기준 = 저장 상세(표본 A) + 덧 측점(브라우저 표본 B · 새 측점은 표본이 그것뿐)
const serverPlus = [...saved.cross_sections];
serverPlus.splice(2, 0, addedSections[2]);
const backStations = baseKeys.map(([key, m, kind]) => st(key, m, kind, groundOf(groundB, m)));
const removed = swap.swapCrossSections(
  added.detail,
  backStations,
  plusList.map(([key]) => key),
  20,
);
// 노선이 옮겨 간 측점(좌표 다름)은 새 지형 표본
const shifted = swap.swapCrossSections(
  saved,
  baseKeys.map(([key, m, kind]) => ({ ...st(key, m, kind, groundOf(groundB, m)), y: 1.5 })),
  savedKeys,
  20,
);

console.log(
  JSON.stringify({
    mc: {
      added: mcOut.added,
      removed: mcOut.removed,
      moves: [...mcOut.moves],
      memo: mcOut.detail.cross_sections[2].design.memo ?? null,
      stationId: mcOut.detail.cross_sections[2].station_id,
      far: { added: farOut.added, removed: farOut.removed },
    },
    plus: {
      keptSamples: added.detail.cross_sections
        .filter((_, i) => i !== 2)
        .every(
          (s, i) => JSON.stringify(s.samples) === JSON.stringify(saved.cross_sections[i].samples),
        ),
      keptCenterZ: added.detail.cross_sections.filter((_, i) => i !== 2).map((s) => s.center_z),
      savedCenterZ: saved.cross_sections.map((s) => s.center_z),
      newSamples:
        JSON.stringify(added.detail.cross_sections[2].samples) ===
        JSON.stringify(samplesOf(groundB, 30)),
      browser: cumulative(addedSections),
      server: cumulative(serverPlus),
      back: cumulative(recross(removed.detail)),
      saved: cumulative(saved.cross_sections),
      // 고치기 전 꼴(모든 측점 브라우저 표본) — 차가 큼을 보임
      allBrowser: cumulative(
        plusList.map(([, m], i) => ({
          ...addedSections[i],
          design: designOf(samplesOf(groundB, m), m),
        })),
      ),
      shiftedFresh: shifted.detail.cross_sections.every(
        (s, i) => JSON.stringify(s.samples) === JSON.stringify(samplesOf(groundB, baseKeys[i][1])),
      ),
    },
  }),
);