/* 273-1 종단 고름 → 화면 밖이면 가운데로 — 진짜 `createSelectionReveal`(design_profile_viewport.ts)을
 * 가짜 스크롤러로 돌림. 표준출력 JSON 한 벌.
 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));

const ROOT = path.join(__dirname, "..", "..");
const js = ts.transpileModule(
  fs.readFileSync(path.join(ROOT, "A00_Common/design/design_profile_viewport.ts"), "utf8"),
  { compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 } },
).outputText;
const box = { exports: {} };
const stubs = {
  "../../B05_Profile/B05_Profile_UI_Profile_Wheel": { attachWheelHorizontalScroll: () => {} },
  "@util/common_util_chart_ywindow": { needsFullRedraw: () => false },
  "@util/common_util_view_window": { viewOf: () => globalThis },
};
new Function("exports", "module", "require", js)(box.exports, box, (name) => {
  if (!stubs[name]) throw new Error(`stub 없음: ${name}`);
  return stubs[name];
});

/** 폭 700 스크롤러 — 고른 선은 내용 좌표 `lineAt`(없으면 null). */
function scroller(lineAt) {
  const body = {
    scrollLeft: 0,
    clientWidth: 700,
    line: lineAt,
    getBoundingClientRect: () => ({ left: 0, width: 700 }),
    querySelector(selector) {
      if (this.line === null || !selector.includes("--selected")) return null;
      const x = this.line - this.scrollLeft;
      return { getBoundingClientRect: () => ({ left: x - 1, width: 2 }) };
    },
  };
  return body;
}

const out = {};
const far = scroller(3000);
const reveal = box.exports.createSelectionReveal(far);
reveal("a");
out.far = far.scrollLeft; // 3000 - 350
far.scrollLeft = 100; // 사용자가 옮겨 봄
reveal("a"); // 같은 고름 다시 칠함
out.same = far.scrollLeft;

const near = scroller(400);
box.exports.createSelectionReveal(near)("b");
out.near = near.scrollLeft; // 보이는 자리 — 안 밂

const late = scroller(null);
const revealLate = box.exports.createSelectionReveal(late);
revealLate("c"); // 아직 안 그려짐
late.line = 2000;
revealLate("c"); // 그린 뒤 같은 고름 — 이제 밂
out.late = late.scrollLeft;

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