// 원본 구버전 EST Plus 자료 3종(spec_misc §2 · spec_estplus.md): 「EstPlus 데이타 불러오기」(mnuFileEstPlusLoad — .est 를 풀어
// 표마다 변환해 새 작업으로), 「Est Plus와 단가비교」(ActionEstCompare Ctrl+Alt+E → TfrmCompare: 비교할 항목 4가지 중 고르고
// 비교파일선택 → 이 공사 머리 행과 구형 파일 Index > 0 레코드를 차례로 짝지어 합계가 다르면 표시, 더블클릭 = 그 자료로 이동),
// 「EstPlus 데이타로 저장」(ActionConvertToEstPlus Ctrl+Shift+F12 → 394 바이트 판 .est). 읽기·쓰기는 서버 legacy-estplus.cjs.
const EstEstPlus = (() => {
  const num = (v) => Number(v) || 0;
  const KINDS = [
    ["기계경비", "MachMainDat"],
    ["단가산출", "CostTitleDat"],
    ["일위대가", "HeadMainDat"],
    ["내역서", "EstMainDat"],
  ];
  const pickFile = () =>
    new Promise((resolve) => {
      const picker = document.createElement("input");
      picker.type = "file";
      picker.accept = ".est,.ebk";
      picker.addEventListener("change", () => resolve(picker.files[0]));
      picker.click();
    });

  // 이 공사 쪽 행(Index > 0)과 구형 값을 차례로 짝지음 · 확인 = 합계 다름(정확 비교)
  function pair(project, kind, legacy) {
    const [, table] = KINDS[kind],
      rows = (project.tables[table] || [])
        .map((row, index) => ({ row, index }))
        .filter(({ row }) => num(row.Index) > 0);
    return rows.map(({ row, index }, i) => {
      const o = legacy[i] || { ONU: 0, OGU: 0, OJU: 0 },
        mine = num(row.NC) + num(row.GC) + num(row.JC) + num(row.SC);
      return {
        index,
        Index: row.Index,
        Code: row.Code,
        Name: row.Name || EstText.clean(row.LineData || ""),
        Size: row.Size,
        Unite: row.Unite,
        NC: num(row.NC),
        GC: num(row.GC),
        JC: num(row.JC),
        SC: num(row.SC),
        ...o,
        UsesCheck: mine !== o.ONU + o.OGU + o.OJU,
      };
    });
  }

  let compared = { kind: 0, rows: [] };
  function draw() {
    const { esc, number } = EstApp,
      { kind, rows } = compared;
    EstApp.showDialog(
      "단가비교",
      `<div class="business-tools"><b>비교할항목 선택</b>${KINDS.map(([label], i) => `<label><input type="radio" name="ep-kind" value="${i}" ${i === kind ? "checked" : ""}> ${label}</label>`).join("")}<button data-action="estplus-compare-file">비교파일선택</button><b id="estplus-count">${rows.filter((r) => r.UsesCheck).length}</b><span id="estplus-error" role="alert"></span></div><div style="max-height:480px;overflow:auto"><table class="sheet"><thead><tr><th>확인</th><th>No</th><th>품명</th><th>규격</th><th>단위</th><th>노무비</th><th>재료비</th><th>경비</th><th>실적</th><th></th><th>노무비</th><th>재료비</th><th>경비</th></tr></thead><tbody>${rows
        .map(
          (r) =>
            `<tr data-ep-row="${r.index}" style="cursor:pointer${r.UsesCheck ? ";color:#b00" : ""}"><td>${r.UsesCheck ? "✔" : ""}</td><td>${r.Index}</td><td style="text-align:left">${esc(r.Name)}</td><td>${esc(r.Size ?? "")}</td><td>${esc(r.Unite ?? "")}</td><td>${number(r.NC)}</td><td>${number(r.GC)}</td><td>${number(r.JC)}</td><td>${number(r.SC)}</td><td></td><td>${number(r.ONU)}</td><td>${number(r.OGU)}</td><td>${number(r.OJU)}</td></tr>`,
        )
        .join("")}</tbody></table></div>`,
    );
  }
  async function compareFile() {
    compared.kind = Number(document.querySelector('[name="ep-kind"]:checked')?.value || 0);
    const file = await pickFile();
    if (!file) return;
    const legacy = await EstApp.api(`/api/estplus-compare?kind=${compared.kind}`, {
      method: "POST",
      body: await file.arrayBuffer(),
    });
    compared.rows = pair(EstApp.state.project, compared.kind, legacy);
    draw();
  }

  async function load(state) {
    const file = await pickFile();
    if (!file) return;
    const project = await EstApp.api(
      `/api/estplus-read?name=${encodeURIComponent(file.name.replace(/\.(est|ebk)$/i, ""))}`,
      { method: "POST", body: await file.arrayBuffer() },
    );
    if (!confirm("구버젼 데이타를 변환했습니다. 현재 작업을 변환한 자료로 바꾸시겠습니까?")) return;
    EstApp.setProject(project);
    state.notice = (project.importWarnings || []).join(" ");
    EstApp.render();
  }
  async function convert(state) {
    const response = await fetch("/api/estplus-write", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(state.project),
    });
    if (!response.ok) throw Error((await response.json()).error);
    EstApp.download(
      `${state.project.name || "내역서"}.est`,
      await response.blob(),
      "application/octet-stream",
    );
    state.notice = "변환을 마쳤습니다.";
    EstApp.render();
  }

  function install() {
    document.addEventListener("keydown", (event) => {
      const k = event.key.toLowerCase();
      if (event.ctrlKey && event.altKey && k === "e") {
        event.preventDefault();
        handle("estplus-compare", EstApp.state);
      } else if (event.ctrlKey && event.shiftKey && event.key === "F12") {
        event.preventDefault();
        handle("estplus-convert", EstApp.state);
      }
    });
    document.addEventListener("dblclick", (event) => {
      const tr = event.target.closest?.("[data-ep-row]");
      if (!tr) return;
      const [, table] = KINDS[compared.kind],
        row = EstApp.state.project.tables[table][Number(tr.dataset.epRow)];
      if (!row?.Code && table !== "EstMainDat") return;
      EstApp.byId("dialog").close();
      const view = { CostTitleDat: "CostMainDat" }[table] || table;
      EstApp.navigate(view, table === "EstMainDat" ? "" : row.Code);
    });
  }
  if (typeof document !== "undefined" && document.addEventListener) install();

  function handle(name, state) {
    const fail = (error) => {
      const note = EstApp.byId("estplus-error");
      if (note) note.textContent = error.message;
      else {
        state.notice = error.message;
        EstApp.render();
      }
    };
    if (name === "estplus-compare") draw();
    else if (name === "estplus-compare-file") compareFile().catch(fail);
    else if (name === "estplus-load") load(state).catch(fail);
    else if (name === "estplus-convert") convert(state).catch(fail);
    else return false;
    return true;
  }
  return { pair, handle };
})();