/* 구조물 조합 선택 모달(PLAN 280-2) 시험 헬퍼 — `ui_template_item_picker.ts` 를 트랜스파일해
 * 화면 부품(요소 · 모달 · 나무 · 카드 · 위 표)을 대역으로 갈아 끼우고 돌림 · 자료 쪽(`_data`)은 진짜.
 * 위 표 고름 → 나무(펼쳐 고름) · 오른쪽 카드 · 층 단추 → 위 표 = 그 층 — 결과는 표준출력에 JSON 한 벌.
 * ⚠ 확장자가 `.cjs` 인 까닭은 `helper_b05_curve_radius_floor.cjs` 머리와 같다.
 */
const fs = require("fs");
const path = require("path");
const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));

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

// ── 화면 그릇 흉내 — 클래스 · 자식 · 이벤트 · 숨김만 ─────────────────────
class FakeNode {
  constructor(props = {}) {
    this._classes = new Set(
      String(props.className ?? "")
        .split(/\s+/)
        .filter(Boolean),
    );
    this.textContent = props.text ?? "";
    this.children = [...(props.children ?? [])];
    this.hidden = !!(props.attrs && "hidden" in props.attrs);
    this.disabled = false;
    this.dataset = {};
    this.attrs = {};
    this.listeners = {};
    this.value = "";
    this.style = { setProperty() {} };
    const self = this;
    this.classList = {
      add: (...names) => names.forEach((n) => self._classes.add(n)),
      remove: (...names) => names.forEach((n) => self._classes.delete(n)),
      toggle: (name, force) => {
        const on = force === undefined ? !self._classes.has(name) : !!force;
        on ? self._classes.add(name) : self._classes.delete(name);
        return on;
      },
      contains: (name) => self._classes.has(name),
    };
  }
  append(...kids) {
    this.children.push(...kids);
  }
  replaceChildren(...kids) {
    this.children = kids;
  }
  setAttribute(name, value) {
    this.attrs[name] = value;
  }
  getAttribute(name) {
    return this.attrs[name];
  }
  addEventListener(type, handler) {
    (this.listeners[type] ||= []).push(handler);
  }
  click() {
    (this.listeners.click || []).forEach((h) => h({ target: this }));
  }
  scrollIntoView() {
    scrolled.push(this.dataset.id ?? "");
  }
  all() {
    return this.children.flatMap((c) => (c instanceof FakeNode ? [c, ...c.all()] : []));
  }
  querySelector(selector) {
    const name = selector.replace(/^\./, "");
    return this.all().find((n) => n.classList.contains(name)) ?? null;
  }
}
const scrolled = [];

const tableShows = [];
const detailShows = [];
let onColumn = null;
let modal = null;

const button = ({ label, variant, onClick }) => {
  const node = new FakeNode({ className: `ui-btn ui-btn--${variant ?? "filled"}`, text: label });
  if (onClick) node.addEventListener("click", onClick);
  return node;
};

const STUBS = {
  "./ui_template_item_picker.css": {},
  "@config/config_frontend": { API_BASE_URL: "/api" },
  "./ui_template_elements": {
    el: (_tag, props) => new FakeNode(props),
    createButton: button,
    createInputField: () => {
      const input = new FakeNode({ className: "ui-input" });
      return { root: new FakeNode({ children: [input] }), input };
    },
    showToast: () => {},
  },
  "./ui_template_locale": { t: (key) => key },
  "./ui_template_modal": {
    openModal: (opts) => {
      const body = new FakeNode({ className: "ui-modal__body" });
      modal = { title: opts.title, body };
      opts.mount(body);
      return { close: () => {} };
    },
  },
  // 나무 — 펼친(`open`) 갈래만 아래 줄을 그림 = 보이는 줄만 생김
  "./ui_template_tree": {
    renderTree: function render(nodes, make, depth = 0) {
      return nodes.flatMap((node) => {
        if (!node.children?.length) return [make(node, "", depth, () => node.run?.())];
        const row = make(node, node.open ? "▾" : "▸", depth, () => {});
        return [row, ...(node.open ? render(node.children, make, depth + 1) : [])];
      });
    },
    createTreeRow: (node, _caret, _depth, onClick) => {
      const row = new FakeNode({ className: "ui-tree__row", text: node.label });
      row.dataset.id = node.id;
      row.addEventListener("click", onClick);
      return row;
    },
    openTreeMenu: () => {},
  },
  "./ui_template_item_picker_ask": { askFields: async () => null },
  "./ui_template_item_picker_project": { projectItems: () => ({}) },
  "./ui_template_item_picker_detail": {
    createItemDetail: () => ({
      root: new FakeNode({ className: "detail" }),
      show: (row) => detailShows.push(row ? row.key : null),
      markEdited: () => {},
      reload: () => {},
    }),
  },
  "./ui_template_item_picker_edit": { createEditView: () => ({}) },
  "./ui_template_item_picker_table": {
    createComboTable: (cb) => {
      onColumn = cb;
      return {
        root: new FakeNode({ className: "table" }),
        show: (at, column) =>
          tableShows.push(at ? `${at.layer}|${at.owner ?? ""}|${column}` : null),
        destroy: () => {},
      };
    },
  },
};

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

const item = (key, 열, 경로) => ({ key, 열, 경로 });
const GROUPS = [
  {
    layer: "system",
    owner: null,
    items: [
      item("SS1", "rvS1", ["돌기슭막이", "메쌓기", "1.2m"]),
      item("SS2", "rvS2", ["돌기슭막이", "찰쌓기", "1.5m"]),
    ],
  },
  { layer: "company", owner: "c1", items: [item("SC1", "rvC1", ["배수관", "흄관"])] },
  {
    layer: "personal",
    owner: "u1",
    items: [item("SP1", "rvP1", ["옹벽", "기초"]), item("SP2", "rvP2", ["옹벽", "벽체", "1m"])],
  },
];
globalThis.fetch = async () => ({ ok: true, json: async () => GROUPS });

const flush = () => new Promise((resolve) => setTimeout(resolve, 20));

(async () => {
  const { openItemPicker } = loadTs(path.join(UI, "ui_template_item_picker.ts"));
  const out = {};
  void openItemPicker({ current: null, canCopy: false });
  await flush();
  const [, cols] = modal.body.children;
  const [search, layerBar, treeHost] = cols.children[0].children;
  const searchInput = search.children[0];
  const active = () => treeHost.all().find((n) => n.classList.contains("is-active"))?.dataset.id;
  const leaves = () =>
    treeHost
      .all()
      .filter((n) => n.dataset.id && n.dataset.id.split("|").length === 3)
      .map((n) => n.dataset.id);
  const layerButton = (key) => layerBar.children.find((b) => b.textContent === key);
  const pressed = () =>
    layerBar.children
      .filter((b) => b.getAttribute("aria-pressed") === "true")
      .map((b) => b.textContent);

  out.title = modal.title;
  out.start = { table: tableShows.at(-1), layer: pressed(), detail: detailShows.at(-1) };

  // ① 위 표에서 열 고름(개인 층) → 나무 고름 · 펼쳐 보임 · 굴림 · 오른쪽 카드 · 표 열
  scrolled.length = 0;
  onColumn("rvP2");
  out.tablePick = {
    active: active(),
    visible: leaves().includes("personal|u1|SP2"),
    scrolled: scrolled.includes("personal|u1|SP2"),
    detail: detailShows.at(-1),
    table: tableShows.at(-1),
  };
  // 같은 열 다시 · 표에 없는 열 = 아무것도 안 바뀜(표 → 나무 → 표 되돌이 없음)
  const before = { detail: detailShows.length, table: tableShows.length };
  onColumn("rvP2");
  onColumn("rvNone");
  out.sameAgain = {
    detail: detailShows.length - before.detail,
    table: tableShows.length - before.table,
  };

  // ② 층 단추 → 위 표 = 그 층 표(고른 항목은 다른 층이라 열 없음) · 나무 = 그 층
  layerButton("M02_PickerSystem").click();
  out.layerSystem = { table: tableShows.at(-1), layer: pressed(), detail: detailShows.at(-1) };
  layerButton("M02_PickerCompany").click();
  out.layerCompany = { table: tableShows.at(-1), layer: pressed() };
  // 고른 항목의 층으로 돌아오면 그 열이 다시 골라짐
  layerButton("M02_PickerPersonal").click();
  out.layerBack = tableShows.at(-1);

  // ③ 다른 층 표에서 고름 — 접힌 폴더가 펼쳐지고 그 항목 · 카드 · 표 열
  layerButton("M02_PickerSystem").click();
  out.systemLeavesBefore = leaves();
  onColumn("rvS2");
  out.systemPick = {
    active: active(),
    visible: leaves().includes("system||SS2"),
    detail: detailShows.at(-1),
    table: tableShows.at(-1),
  };

  // ④ 나무 고름 → 위 표 열(지금 길 그대로)
  onColumn("rvS1");
  const leaf = treeHost.all().find((n) => n.dataset.id === "system||SS2");
  leaf.click();
  out.treePick = { active: active(), detail: detailShows.at(-1), table: tableShows.at(-1) };

  // ⑤ 찾기에 가려진 항목을 표에서 고르면 찾기를 풂
  searchInput.value = "찰쌓기";
  (searchInput.listeners.input || []).forEach((h) => h());
  onColumn("rvS1");
  out.searchCleared = { value: searchInput.value, active: active() };

  console.log(JSON.stringify(out));
})().catch((error) => {
  console.error(error);
  process.exit(1);
});