/* 453 평면 집기 · 스냅만 바꾼 초안 헬퍼 — 진짜 `_RouteEdit_Input`(pressWinner · handleAtScreen) ·
 * `_RouteEdit_History` · `_RouteEdit_Draft`(다리 감싸기)를 트랜스파일해 돌림. 결과 JSON 한 벌(표준출력).
 */
const fs = require("fs");
const path = require("path");
const { makeLoader } = require("./helper_ts_stub_loader.cjs");

const ROOT = path.join(__dirname, "..", "..");
const data = new Map();
globalThis.sessionStorage = {
  get length() {
    return data.size;
  },
  key: (i) => [...data.keys()][i] ?? null,
  getItem: (k) => (data.has(k) ? data.get(k) : null),
  setItem: (k, v) => data.set(k, String(v)),
  removeItem: (k) => data.delete(k),
};
const win = new EventTarget();
win.setTimeout = setTimeout;
win.clearTimeout = clearTimeout;
win.sessionStorage = globalThis.sessionStorage;
win.localStorage = { getItem: () => null };
globalThis.window = win;

const STUBS = {
  "@ui/ui_template_palette": { themeColor: (_name, fallback) => fallback },
  "@util/common_util_svg": { stationLabel: (c, i) => `No.${Math.round(c / i)}` },
};
const { loadTs } = makeLoader({
  root: ROOT,
  requireFor: (full) => (request) => {
    if (STUBS[request]) return STUBS[request];
    if (request.startsWith(".")) return loadTs(`${path.resolve(path.dirname(full), request)}.ts`);
    return require(request);
  },
});
const page = path.join(ROOT, "B05_Profile");
const input = loadTs(path.join(page, "B05_Profile_UI_RouteEdit_Input.ts"));
const edit = loadTs(path.join(page, "B05_Profile_UI_RouteEdit_History.ts"));
const draftLink = loadTs(path.join(page, "B05_Profile_UI_RouteEdit_Draft.ts"));

// ① 누름 판정 — `_Pointer.chooseAt` 와 같은 셈(노드 · 손잡이는 화면 8 px 떨어짐 · 433-14 ③ 낮은 확대 R 12)
const toScreen = ([x, y]) => [x, y];
const node = [100, 100];
const curves = [{ node_first: 1, start: [108, 100], end: [100, 108] }];
const choose = (px, py, markDistance = Infinity) => {
  const pick = input.pickAtScreen([[0, 0], node, [200, 200]], toScreen, px, py, 12, 6, null);
  const at = pick && "node" in pick ? toScreen(node) : null;
  const handle = input.handleAtScreen(curves, toScreen, px, py, 14);
  return input.pressWinner(
    at ? Math.hypot(at[0] - px, at[1] - py) : Infinity,
    6,
    markDistance,
    handle?.distance ?? Infinity,
  );
};
const pick = {
  handleSide: choose(107, 100), // 노드 7 px(가운데 밖) · 손잡이 1 px — 손잡이
  handleCenter: choose(108, 100), // 손잡이 위 · 노드 8 px — 손잡이
  coreEdge: choose(106, 100), // 노드 6 px(가운데 끝) · 손잡이 2 px — 노드
  nodeCore: choose(102, 100), // 노드 2 px(가운데 안) — 노드
  nodeCloser: choose(93, 100), // 노드 7 px · 손잡이 15 px(문턱 밖) — 노드
  handleOnly: choose(116, 100), // 노드 16 px(문턱 밖) · 손잡이 8 px — 손잡이
  nothing: choose(150, 150), // 빈 곳 — pick(null 그대로)
  markOnCore: choose(103, 100, 1), // 마커 1 px 이어도 노드 가운데 3 px — 노드(433-21 ③)
  markCloser: choose(93, 100, 3), // 노드 7 px · 마커 3 px — 마커
  nodeBeatsMark: choose(93, 100, 9), // 노드 7 px · 마커 9 px — 노드
  tie: input.pressWinner(8, 6, 8, 8), // 같으면 마커 → 노드 → 손잡이
  handleDistance: input.handleAtScreen(curves, toScreen, 111, 100, 14)?.distance ?? null,
};

// ② 스냅만 바꾼 뒤 노선 처음으로 — 다리 초안(433-14 ②)
const snap = (x) => ({
  planned: [
    [0, 0],
    [x, 0],
    [100, 0],
  ],
  curveOn: [true, true, true],
  curveRadius: [null, null, null],
  curveLock: [null, null, null],
  curveArc: [null, null, null],
  apexLock: [false, false, false],
  picked: -1,
});
const draft = (snapChanged) => {
  const told = [];
  const bridge = { edited: (d) => told.push(d ? d.nodes[1][0] : null), saved: () => null };
  const history = draftLink.watch(
    edit.createRouteEditHistory(snap(50)),
    bridge,
    () => ({ stationSnap: true, snapStepM: 1 }),
    () => snapChanged,
  );
  history.commit(snap(60));
  history.undo();
  history.redo();
  history.undo();
  return told;
};
const old = (() => {
  const told = [];
  const bridge = { edited: (d) => told.push(d ? d.nodes[1][0] : null), saved: () => null };
  const history = draftLink.watch(edit.createRouteEditHistory(snap(50)), bridge, () => ({}));
  history.commit(snap(60));
  history.undo();
  return told;
})();

// ③ 맞추지 않은 기준에서 막힌 걸음만 하고 놓음(433-14 ① · req269 idem 재현) — 막힌 걸음 미리보기
//    (`fitPreview` = `fitDrag`)가 노선을 바꿈 → `endDrag` 가 맞추기 전 자리(`dragRaw`)로 되돌림.
const fit = loadTs(path.join(page, "logic", "B05_Profile_RouteEdit_StationFit.ts"));
const LIMITS = { minRadiusM: 30, limitRadiusM: 12, limitArcM: 0, intervalM: 20 };
const ROUTE = [[0, 0]];
{
  let seed = 1;
  const rnd = () => ((seed = (seed * 16807) % 2147483647), seed / 2147483647);
  let a = 0;
  for (let i = 0; i < 14; i += 1) {
    a += (rnd() - 0.5) * 1.6;
    const L = 35 + rnd() * 60;
    const q = ROUTE[ROUTE.length - 1];
    ROUTE.push([q[0] + Math.cos(a) * L, q[1] + Math.sin(a) * L]);
  }
}
const cols = (planned) => ({
  planned,
  curveOn: planned.map(() => true),
  curveRadius: planned.map(() => null),
  curveLock: planned.map(() => null),
  curveArc: planned.map(() => null),
  apexLock: planned.map((_, i) => i === 0 || i === planned.length - 1),
});
const gap = (a, b) => Math.max(...a.map((v, i) => Math.hypot(v[0] - b[i][0], v[1] - b[i][1])));
const blocked = { drags: 0, previewMoved: 0, leftAfterRelease: 0 };
for (let K = 1; K < ROUTE.length - 1; K += 1) {
  const base = ROUTE.map(([x, y]) => [x, y]);
  const dragRaw = base.map(([x, y]) => [x, y]); // 막힌 걸음 = 누르기 전 자리 그대로 맞춤
  let planned = fit.fitDrag(cols(base), base, K, LIMITS);
  blocked.drags += 1;
  if (gap(planned, base) > 1e-6) blocked.previewMoved += 1;
  dragRaw.forEach((vertex, index) => (planned[index] = vertex)); // endDrag(!dragMoved && dragRaw)
  if (gap(planned, base) > 1e-6) blocked.leftAfterRelease += 1;
}

process.stdout.write(
  JSON.stringify({ pick, blocked, draft: { snapChanged: draft(true), same: draft(false), old } }),
);