// 원본 통합 검색(TFRMMULTISERCH: 일위대가·단가산출·기계경비·견적·실적·자재·노임 고르기, 검색어, 검색위치) —
// 웹은 이 앱에 저장된 작업(data/*.json)을 검색 위치로 쓴다. 검색어 낱말이 모두 코드·품명·규격에 들어 있으면 찾음.
const fs = require("node:fs");
const path = require("node:path");

const sources = {
  103: ["HeadTitleDat", "일위대가"],
  104: ["CostTitleDat", "단가산출"],
  105: ["MachTitleDat", "기계경비"],
  101: ["EstiMateDat", "견적단가"],
  21: ["SilJukDat", "실적단가"],
  5: ["StuffcDat", "자재단가"],
  6: ["LaborcDat", "노임단가"],
};
const LIMIT = 300;
const fold = (value) =>
  String(value ?? "")
    .normalize("NFKC")
    .toLowerCase()
    .replace(/\s+/g, "");

// only = 설계참고철(Main Data) 작업 id 목록 — 있으면 그 작업만. 검색어가 「a~b」 또는 숫자 하나면 단가(TC) 범위·같음(원본 0xefefb0).
function search(directory, query, kinds, exclude = "", only = null) {
  const words = String(query ?? "")
    .split(/\s+/)
    .map(fold)
    .filter(Boolean);
  if (!words.length) throw Error("검색어를 입력하세요.");
  const range = /^(\d+(?:\.\d+)?)(?:~(\d+(?:\.\d+)?))?$/.exec(String(query).replace(/[\s,]/g, ""));
  const wanted = (kinds?.length ? kinds : Object.keys(sources))
    .map(Number)
    .filter((k) => sources[k]);
  if (!wanted.length) throw Error("검색할 자료를 하나 이상 고르세요.");
  if (!fs.existsSync(directory)) return { hits: [], total: 0 };
  const hits = [];
  let total = 0;
  for (const name of fs.readdirSync(directory).filter((n) => /^[a-f0-9]{24}\.json$/.test(n))) {
    const id = name.slice(0, -5);
    if (id === exclude || (only && !only.includes(id))) continue;
    let project;
    try {
      project = JSON.parse(fs.readFileSync(path.join(directory, name), "utf8"));
    } catch {
      continue;
    }
    for (const kind of wanted) {
      const [table, label] = sources[kind];
      for (const row of project.tables?.[table] || []) {
        if (!row?.Code) continue;
        if (range) {
          const tc = Number(row.TC) || 0,
            lo = Number(range[1]),
            hi = range[2] == null ? lo : Number(range[2]);
          if (tc < Math.min(lo, hi) || tc > Math.max(lo, hi)) continue;
        } else {
          const text = fold(`${row.Code} ${row.Name} ${row.Size}`);
          if (!words.every((w) => text.includes(w))) continue;
        }
        total++;
        if (hits.length < LIMIT)
          hits.push({
            id,
            project: project.name || id,
            kind,
            label,
            Code: row.Code,
            Name: row.Name ?? "",
            Size: row.Size ?? "",
            Unite: row.Unite ?? "",
            price: Number(row.TC) || 0,
          });
      }
    }
  }
  return { hits, total };
}

module.exports = { search, sources };