// 원본 찾기(TFRMESTSERCH: 검색어·처음부터/현재위치부터·다음찾기)와
// 산출근거 바꾸기(TFRMCOSTWORDCHANGE: 다음찾기·바꾸기)를 옮긴 찾기 창. 모두 바꾸기는 기존 `산출근거 문구 바꾸기`.
const EstFind = (() => {
  const grouped = ["HeadMainDat", "CostMainDat", "MachMainDat"];
  const fold = (value) =>
    String(value ?? "")
      .normalize("NFKC")
      .toLowerCase();

  function text(row) {
    return Object.entries(row)
      .filter(([key, value]) => typeof value === "string" && !key.endsWith("_"))
      .map(([key, value]) => (key === "LineData" ? EstText.clean(value) : value))
      .join("\n");
  }

  function next(rows, query, from = 0) {
    const q = fold(query).trim();
    if (!q) throw Error("검색어를 입력하세요.");
    for (let index = Math.max(0, from); index < rows.length; index++)
      if (fold(text(rows[index])).includes(q)) return index;
    return -1;
  }

  function groupOf(rows, index) {
    for (const [code, group] of EstNative.groups(rows))
      if (index >= group.start && index < group.start + group.rows.length)
        return { code, position: index - group.start };
    return { code: "", position: index };
  }

  function open(state) {
    const rows = state.project.tables[state.view];
    if (!Array.isArray(rows)) throw Error("표 화면에서 찾기를 사용하세요.");
    state.find ||= { query: "", replacement: "", from: "current" };
    const { esc } = EstApp,
      cost = state.view === "CostMainDat";
    EstApp.showDialog(
      "찾기(Ctrl+F)",
      `<div class="form-fields"><label>검색어<input name="find-query" value="${esc(state.find.query)}"></label>${cost ? `<label>바꿀 내용<input name="find-replacement" value="${esc(state.find.replacement)}"></label>` : ""}<label>시작<select name="find-from"><option value="current" ${state.find.from === "current" ? "selected" : ""}>현재위치부터 검색</option><option value="first" ${state.find.from === "first" ? "selected" : ""}>처음부터 검색</option></select></label></div><button data-action="find-next">다음찾기</button>${cost ? ' <button data-action="find-replace">바꾸기</button>' : ""}<p id="find-result" role="status"></p>`,
    );
    document.querySelector('#dialog-content [name="find-query"]').focus();
  }

  function read(state) {
    const value = (name) => document.querySelector(`#dialog-content [name="${name}"]`)?.value;
    state.find.query = value("find-query") ?? "";
    state.find.replacement = value("find-replacement") ?? state.find.replacement;
    state.find.from = value("find-from") || "current";
  }

  function show(state, index) {
    const rows = state.project.tables[state.view],
      { code, position } = grouped.includes(state.view)
        ? groupOf(rows, index)
        : { code: state.group, position: index };
    state.group = code;
    state.query = "";
    EstApp.byId("search").value = "";
    state.page = Math.floor(position / 100);
    state.selection = new Set([index]);
    EstApp.render();
  }

  function findNext(state) {
    read(state);
    const rows = state.project.tables[state.view],
      start =
        state.find.from === "first"
          ? 0
          : Math.max(-1, ...[...state.selection].map(Number).filter(Number.isFinite)) + 1;
    const index = next(rows, state.find.query, start);
    const result = EstApp.byId("find-result");
    if (index < 0) {
      result.textContent = "끝까지 찾았습니다. 더 찾을 항목이 없습니다.";
      return;
    }
    state.find.from = "current";
    document.querySelector('#dialog-content [name="find-from"]').value = "current";
    show(state, index);
    result.textContent = `${index + 1}번째 행을 찾았습니다.`;
  }

  function replaceCurrent(state) {
    read(state);
    if (state.view !== "CostMainDat") throw Error("단가산출 화면에서 바꾸기를 사용하세요.");
    const rows = state.project.tables.CostMainDat,
      index = [...state.selection][0];
    if (state.selection.size !== 1 || !rows[index]) throw Error("먼저 다음찾기로 행을 찾으세요.");
    const updates = EstText.replaceWords(
      [{ row: rows[index], index }],
      state.find.query,
      state.find.replacement,
    );
    if (!updates.length) throw Error("이 행에는 바꿀 문구가 없습니다. 다음찾기를 누르세요.");
    EstApp.change((project) => (project.tables.CostMainDat[index].LineData = updates[0].value));
    findNext(state);
  }

  function handle(name, state) {
    if (name === "find") open(state);
    else if (name === "find-next") findNext(state);
    else if (name === "find-replace") replaceCurrent(state);
    else return false;
    return true;
  }

  if (typeof document !== "undefined" && document.addEventListener)
    document.addEventListener("keydown", (event) => {
      if (!(event.ctrlKey || event.metaKey) || event.key.toLowerCase() !== "f") return;
      event.preventDefault();
      try {
        open(EstApp.state);
      } catch (error) {
        EstApp.state.notice = error.message;
        EstApp.render();
      }
    });

  return { text, next, groupOf, handle };
})();