/* 398-2 꺾임점 창 반지름 · 곡선 길이 넣기(요구 249) — `_CurveBar` 배선을 Node 로 돌려 JSON 한 줄
 * (`test_398_2_curve_input.py` 가 판정). 창(`_Label`)은 손잡이만 잡는 가짜 · 편집 창 `applyEdit` 는
 * 같은 길(스냅 켬 = `fitCurveStations` → 길이 고정 R · 하한 → `buildEditedPolyline`)로 흉내.
 *   node helper_398_2_curve_input.cjs
 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));

const ROOT = path.join(__dirname, "..", "..");
const B05 = path.join(ROOT, "B05_Profile");
const cache = new Map();
let handlers = null;
const shows = [];
const STUBS = {
  "./B05_Profile_UI_RouteEdit_Label": {
    createCurveLabel: (given) => {
      handlers = given;
      return { show: (state) => shows.push(state), hide: () => {}, destroy: () => {} };
    },
    centerDirectionOf: () => null,
  },
};

function loadTs(file) {
  const full = path.resolve(file);
  if (cache.has(full)) return cache.get(full);
  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.exports);
  const localRequire = (request) =>
    STUBS[request] ??
    (request.startsWith(".")
      ? loadTs(path.join(path.dirname(full), `${request}.ts`))
      : require(request));
  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
  cache.set(full, box.exports);
  return box.exports;
}

const curve = loadTs(path.join(B05, "logic", "B05_Profile_UI_RouteEdit_Curve.ts"));
const edits = loadTs(path.join(B05, "logic", "B05_Profile_UI_RouteEdit_Edits.ts"));
const fit = loadTs(path.join(B05, "logic", "B05_Profile_RouteEdit_StationFit.ts"));
const bar = loadTs(path.join(B05, "B05_Profile_UI_RouteEdit_CurveBar.ts"));

// IP1 = 앞뒤 직선 길어 R 60 들어감 · IP2 = 뒤 직선 16 m 라 접선 8 m 까지(큰 R 눌림)
const ROUTE = [
  [0, 0],
  [120, 0],
  [220, 70],
  [236, 70],
  [340, 0],
];
const LIMITS = { minRadiusM: 12, limitRadiusM: 12, limitArcM: 5, intervalM: 20 };

function editor(snap) {
  const n = ROUTE.length;
  const state = {
    picked: -1,
    planned: ROUTE.map((v) => [v[0], v[1]]),
    nodeInfo: [],
    curveInfo: [],
    curveOn: Array(n).fill(true),
    curveRadius: Array(n).fill(null),
    curveLock: Array(n).fill(null),
    curveArc: Array(n).fill(null),
    apexLock: Array(n).fill(false),
    limitRadiusM: LIMITS.limitRadiusM,
    limitArcM: LIMITS.limitArcM,
  };
  const status = { textContent: "" };
  const markEdited = () => {
    edits.applyArcLocks(state.planned, state.curveLock, state.curveArc, state.curveRadius);
    edits.applyCurveLimits(
      state.planned,
      state.curveOn,
      state.curveRadius,
      LIMITS.limitRadiusM,
      LIMITS.limitArcM,
    );
    const built = curve.buildEditedPolyline(
      state.planned,
      state.curveOn,
      state.curveRadius,
      LIMITS.minRadiusM,
    );
    state.line = built.vertices;
    state.curveInfo = built.curves;
    state.nodeInfo = built.nodes;
  };
  let made = null;
  const applyEdit = (message) => {
    if (snap) state.planned = fit.fitCurveStations(state, LIMITS, 1);
    markEdited();
    made.sync();
    status.textContent = `예상노선 — ${message} 꼬리`;
  };
  made = bar.createCurveBar({
    canvas: { getBoundingClientRect: () => ({ left: 0, top: 0, right: 800, bottom: 600 }) },
    container: { querySelector: (sel) => (sel === ".b05-routeedit__status" ? status : null) },
    state: () => state,
    toScreen: (v) => [v[0], v[1]],
    applyEdit,
    onUnselect: () => {},
  });
  markEdited();
  const drawn = (k) => state.curveInfo.find((c) => c.node_first === k) ?? null;
  const arcOf = (k) => {
    const c = drawn(k);
    return c ? c.radius_m * edits.deflectionRad(c.inner_angle_deg) : null;
  };
  const mc = (k) => {
    const c = drawn(k);
    if (!c) return null;
    const [[a, b]] = loadTs(
      path.join(B05, "logic", "B05_Profile_UI_RouteEdit_Frame.ts"),
    ).curveSpans(state.line, [c]);
    return (a + b) / 2;
  };
  const pick = (k) => {
    state.picked = k;
    made.sync();
  };
  const lastShow = () => shows[shows.length - 1];
  return { state, status, handlers: () => handlers, drawn, arcOf, mc, pick, lastShow, markEdited };
}

const round = (v) => (v === null ? null : Math.round(v * 1000) / 1000);
const out = {};

for (const snap of [false, true]) {
  const key = snap ? "snapOn" : "snapOff";
  const ed = editor(snap);
  const h = ed.handlers();
  const row = {};
  // IP1 — 반지름 40 → 60 · 곡선 길이 18 → 25
  ed.pick(1);
  h.onRadius(40);
  row.r40 = round(ed.drawn(1).radius_m);
  h.onRadius(60);
  row.r60 = round(ed.drawn(1).radius_m);
  row.r60Shown = round(ed.lastShow().radiusShown);
  row.r60Status = ed.status.textContent;
  row.r60Mc = round(ed.mc(1));
  h.onArcLength(18);
  row.l18 = round(ed.arcOf(1));
  h.onArcLength(25);
  row.l25 = round(ed.arcOf(1));
  row.l25Shown = round(ed.lastShow().arcLengthShown);
  row.l25Status = ed.status.textContent;
  // IP2 — 접선 자리 모자람(넣은 값 · 그린 값 · 까닭)
  ed.pick(2);
  h.onRadius(60);
  row.capR = round(ed.drawn(2).radius_m);
  row.capShown = round(ed.lastShow().radiusShown);
  row.capStatus = ed.status.textContent;
  h.onArcLength(40);
  row.capArcStatus = ed.status.textContent;
  h.onRadius(null);
  row.autoStatus = ed.status.textContent;
  out[key] = row;
}

// 「고정」 — 길이 고정 켬 = 교각이 바뀌어도 그 길이 · 끔 = 반지름이 남고 길이가 따라 바뀜
for (const lock of [true, false]) {
  const ed = editor(false);
  const h = ed.handlers();
  ed.pick(1);
  h.onArcLength(25);
  if (lock) h.onLock("arc");
  ed.state.planned[2] = [220, 50]; // IP1 교각이 바뀜
  ed.markEdited();
  out[lock ? "arcLocked" : "arcFree"] = {
    arc: round(ed.arcOf(1)),
    radius: round(ed.drawn(1).radius_m),
  };
}
{
  const ed = editor(false);
  const h = ed.handlers();
  ed.pick(1);
  h.onRadius(60);
  h.onLock("radius");
  ed.state.planned[2] = [220, 50];
  ed.markEdited();
  out.radiusLocked = { radius: round(ed.drawn(1).radius_m), lock: ed.state.curveLock[1] };
}

process.stdout.write(JSON.stringify(out));