/* =============================================================================
 * line_stack_machine_sheet.ts
 * 기계 보기(PLAN 840-2 · 요구 853 · 862 「기계 보기 공용」) — 기계 한 대를 단가산출 수식 보기와 닮은 꼴로:
 *   왼쪽 = 기계 제어 구역(836-1 `line_stack_machine_ctl` 그대로 — 값 칸 · 인력 줄 · 잡품 재료 줄 여럿 · 842-3) +
 *     「기본 정보 · 손료 근거」 접이 카드(이름 · 규격 · 손료 방식 · 품셈 비율 · 식이 안 읽는 값 칸) + 비슷한 기계에서 시작(새 기계)
 *   오른쪽 = 그 기계 시간당 경비 산출근거(`line_stack_out` · 노 · 재 · 경 · 계 합계 상자) — 값을 바꾸면 브라우저 계산기로 즉시
 *   서버(`POST /api/m02/machine-sheet` · `M02_MyMachine_Sheet`) = 식 고름 + 처음 줄 값을 박은 식 문서 + 연결 기록 ·
 *     고친 값은 덮음(`기계덮음` 꼴)으로 얹어 셈 · 캐시에 없는 연결 · 식이 바뀔 칸만 뒤에서 다시 물음(옛 요청 끊음)
 *   시간당 작업량(846-2) = 왼쪽 접이 카드(작업량 식 변수 = 기계 값) · 오른쪽 풀이(`line_stack_machine_sheet_work`)
 *   줄 = 저장 꼴(M01 기계 줄 · 내 기계 줄) — 덮음 ↔ 줄은 `common_util_machine_sheet` · 저장은 부르는 쪽(M01 상세 · 내 기계)
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import { attachCollapsible, createPanelCard } from "@ui/ui_template_collapsible";
import { createInputField, createSelectField, el } from "@ui/ui_template_elements";
import { createFindList } from "@ui/ui_template_find_list";
import { t as L } from "@ui/ui_template_locale";
import { attachPickSearch } from "@ui/ui_template_pick_search";
import { createSegment } from "@ui/ui_template_segment";
import { createText } from "@ui/ui_template_text";
import type { FormulaDoc, Link } from "../common_util/common_util_formula_doc";
import { calcDoc, type DocAnswer } from "../common_util/common_util_formula_doc_calc";
import { createDocCache, type DocRecord } from "../common_util/common_util_formula_doc_cache";
import {
  COVER,
  coverDoc,
  coverOf,
  defaultsOf,
  partsOf,
  putCover,
  rowEntry,
  type CoverParts,
  type MachineCover,
} from "../common_util/common_util_formula_doc_cover";
import type { StackDoc } from "../common_util/common_util_line_stack";
import {
  MACHINE_COEFS,
  MACHINE_INPUTS,
  machineCoefOf,
} from "../common_util/common_util_machine_coef";
import { crewView } from "../common_util/common_util_machine_crew";
import {
  applyCover,
  bindDoc,
  coverFrom,
  crewKey,
  engineVals,
  modeOf,
  ownedCols,
  rangeWarnings,
  sameVal,
  slotOf,
  type MachineMode,
  type MachinePick,
  type MachineRow,
  type MachineValues,
} from "../common_util/common_util_machine_sheet";
import {
  MACHINE_UNIT,
  machineUnit,
  unitText,
  varUnit,
} from "../common_util/common_util_line_stack_unit";
import { machineCellName } from "../common_util/common_util_machine_symbol_name";
import { docFoot } from "./formula_doc_foot";
import { buildMachineCtl } from "./line_stack_machine_ctl";
import { sheetWorkCard, sheetWorkOut, type SheetWorkOpts } from "./line_stack_machine_sheet_work";
import { buildOut } from "./line_stack_out";
import "./line_stack.css";
import "./line_stack_machine_sheet.css";

export interface MachineSimilar {
  key: string;
  name: string;
  spec: string;
  /** 흐린 꼬리표(구분 · 내 기계 등) */
  tag?: string;
  row: MachineRow;
}

export interface MachineSheetOptions {
  /** 처음 줄(저장본 · 새 기계 = 빈 줄) — 고친 칸 표지 · 되돌림 기준 */
  orig: MachineRow;
  /** 지금 줄(초안) · 없으면 처음 줄 */
  cur?: MachineRow;
  /** 내 기계(방식 바로 · 품셈 · 직접 · 그 사람 개인 층 기계 표) */
  mine: boolean;
  readOnly: boolean;
  lists: { fuels: MachinePick[]; jobs: MachinePick[] };
  findSimilar?: (q: string) => Promise<MachineSimilar[]>;
  onSimilar?: (item: MachineSimilar) => void;
  onChange?: () => void;
}

export interface MachineSheetState {
  name: string;
  spec: string;
  /** 지금 줄(이름 · 규격 넣음) */
  row: MachineRow;
  mode: MachineMode;
  /** 숫자 아닌 칸 — 있으면 저장 막음 */
  errors: string[];
  changed: boolean;
}

interface SheetInfo {
  키: string | null;
  이름?: string;
  까닭?: string;
  문서: FormulaDoc | null;
  /** 처음 줄 셈 꼴 값(식에 박을 값) */
  값?: MachineValues;
  연결?: DocRecord;
  직종: Record<string, string>;
}

/** 늘 보이는 기계 줄 칸(값이 없어도) — 그 밖 칸은 줄에 있으면 */
const BASE_KEYS = ["가격", "손료계수", "주연료", "주연료종류", "전력"];
const PICKS = ["주연료종류"];
/** 식이 바뀔 수 있는 칸(서버 식 고름) */
const PICKY = ["주연료", "전력", "손료계수", ...MACHINE_COEFS];

const clone = <T>(v: T): T => JSON.parse(JSON.stringify(v ?? null)) as T;
/** 값 박은 식(그림용) — 박기 전 기계 칸 단위를 남김(박으면 칸 연결이 수로 바뀌어 단위를 못 읽음 · 845-2) */
const boundView = (d: FormulaDoc, raw: MachineValues): FormulaDoc => {
  const b = bindDoc(d, raw);
  b.변수?.forEach((v, i) => {
    const u = varUnit(d.변수?.[i]);
    if (u && !v.단위) v.단위 = u;
  });
  return b;
};
const text = (v: unknown): string => (v === null || v === undefined ? "" : String(v));
const label = (k: string): string => machineCellName(k);

export function createMachineSheet(o: MachineSheetOptions) {
  const mine = o.mine;
  const ro = o.readOnly;
  let orig: MachineRow = clone(o.orig);
  let cur: MachineRow = clone(o.cur ?? o.orig);
  let name = text(cur.이름);
  let spec = text(cur.규격);
  const start = JSON.stringify([name, spec, cur]);
  const no = text(cur.원문번호) || text(cur.키) || "새 기계";
  const given = { 기계: no };
  const link: Link = { 갈래: "단가산출", 입력: { 기계: `'${no.replace(/'/g, "")}'` } };
  const holder = { 꼴: "수식문서", 변수: [], 식: [], 금액: [] } as unknown as StackDoc;
  const cache = createDocCache();
  const opened = new Set<string>();
  const errors = new Map<string, string>();
  let info: SheetInfo | null = null;
  let jobs: Record<string, string> = {};
  let parts: CoverParts | null = null;
  let base: Required<MachineCover> = { 값: {}, 조종원: [], 잡품: [] };

  const left = el("div", { className: "lstk__left" });
  const right = el("div", { className: "lstk__right" });
  const foot = el("div", { className: "lstk__foot" });
  const notice = el("div");
  const warn = el("div");
  const ctlBox = el("div");
  const baseBox = el("div");
  const workBox = el("div");
  const root = el("div", {
    className: "lstk",
    attrs: { "data-edit": "1", "data-machine-sheet": no },
    children: [el("div", { className: "lstk__areas", children: [left, right] }), foot],
  });
  attachCollapsible(baseBox);

  const sub = (): FormulaDoc | null => info?.문서 ?? null;
  const entry = (): MachineCover => coverOf(holder)[no] ?? {};
  /** 값 박은 셈(덮음 얹은 뒤 · 제어 구역 기본값) */
  const plain = (d: FormulaDoc, g: Record<string, unknown>): DocAnswer =>
    raw(bindDoc(d, info?.값 ?? {}), g);
  const raw = (d: FormulaDoc, g: Record<string, unknown>): DocAnswer =>
    calcDoc(d, cache.links, g, [], new Map(), {});

  /** 식이 바뀌거나 처음 줄 · 방식이 바뀐 뒤 — 덮음을 처음 줄 대 지금 줄로 다시 지음 */
  const rebuild = (): void => {
    delete (holder as { [COVER]?: unknown })[COVER];
    const d = sub();
    parts = d ? partsOf(d) : null;
    if (!d || !parts) return;
    const lists = engineVals(orig, mine);
    base = defaultsOf(d, (plain(d, given).값 ?? {}) as Record<string, unknown>, rowEntry(d, lists));
    putCover(holder, no, coverFrom(parts, orig, cur, mine), base);
  };

  // ── 서버(뒤에서) ──
  let seq = 0;
  let timer: number | undefined;
  let ctl: AbortController | null = null;
  const ask = (now = false): void => {
    window.clearTimeout(timer);
    timer = window.setTimeout(() => void run(), now ? 0 : 300);
  };
  const run = async (): Promise<void> => {
    ctl?.abort();
    ctl = new AbortController();
    const mineSeq = ++seq;
    const body = { 줄: rowOut(), 본: orig, 덮음: coverOf(holder)[no] ?? null, 개인: mine };
    try {
      const r = await fetch(`${API_BASE_URL}/m02/machine-sheet`, {
        method: "POST",
        credentials: "include",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(body),
        signal: ctl.signal,
      });
      const got = (await r.json().catch(() => ({}))) as SheetInfo & { detail?: unknown };
      if (mineSeq !== seq) return;
      if (!r.ok) throw new Error(text(got.detail) || r.statusText);
      cache.merge(got.연결);
      jobs = got.직종 ?? jobs;
      if (!info || got.키 !== info.키) {
        info = got;
        rebuild();
        drawAll();
      } else {
        info.까닭 = got.까닭; // 식은 그대로 — 까닭만 지금 줄로
        drawLive();
      }
    } catch (e) {
      if (mineSeq !== seq || (e as Error).name === "AbortError") return;
      info = { 키: null, 까닭: e instanceof Error ? e.message : "", 문서: null, 직종: jobs };
      parts = null;
      drawAll();
    }
  };

  const rowOut = (): MachineRow => ({ ...cur, 이름: name.trim(), 규격: spec.trim() });
  const changed = (refit = false): void => {
    o.onChange?.();
    drawLive();
    ask(refit);
  };

  // ── 품셈 비율 → 계수(같으면 처음 값 · 제어 구역 칸은 덮음으로) ──
  const recoef = (): void => {
    if (modeOf(cur, mine) !== "품셈") return;
    const v = (cur.값 ??= {});
    const same = MACHINE_INPUTS.every((k) => sameVal(v[k], orig.값?.[k]));
    const got = same ? null : machineCoefOf(v);
    if (!same && !got) return;
    const owned = parts ? ownedCols(parts) : [];
    const e = clone(entry());
    for (const k of MACHINE_COEFS) {
      const want = same ? orig.값?.[k] : got![k];
      if (owned.includes(k)) {
        e.값 = { ...(e.값 ?? {}) };
        if (want === undefined || same) delete e.값[k];
        else e.값[k] = want as number;
      } else if (want === undefined) delete v[k];
      else if (!sameVal(v[k], want)) v[k] = want;
    }
    if (parts) {
      putCover(holder, no, e, base);
      cur = applyCover(parts, orig, cur, entry(), mine, jobs);
    }
  };

  // ── 왼쪽 ──
  const drawCtl = (): void => {
    const d = sub();
    if (!d || !info?.키) return void ctlBox.replaceChildren();
    const mode = modeOf(cur, mine);
    const lock = mode === "품셈" ? [...MACHINE_COEFS] : mine && mode === "바로" ? ["정비비계수", "관리비계수"] : []; // prettier-ignore
    const zone = buildMachineCtl(
      {
        doc: holder,
        answer: { 값: {} } as unknown as DocAnswer,
        subDoc: () => d,
        calc: plain,
        change: (fn) => {
          fn(holder);
          const e = entry();
          if (e.조종원) {
            e.조종원 = e.조종원.map((r) => ({ ...r, 키: crewKey(r.키, jobs) }));
            putCover(holder, no, e, base);
          }
          if (parts) cur = applyCover(parts, orig, cur, entry(), mine, jobs);
          changed();
        },
        name: (k) => cache.names.get(k) ?? "",
        readOnly: ro,
        lists: () => engineVals(orig, mine),
        lock,
      },
      { ...link, 키: info.키 },
    );
    if (zone && lock.length && mode === "품셈") zone.title = L("MS_Locked");
    ctlBox.replaceChildren(...(zone ? [zone] : []));
  };

  /** 칸 단위 — 줄 `단위` 글(일 단위 손료 등 · 기계 표 기본과 다를 때) › 기계 표 칸 단위(845-2 한 벌) */
  const unitOf = (k: string): string => {
    const u = text((cur.단위 as MachineValues | undefined)?.[k]);
    return u && u !== MACHINE_UNIT[k] ? unitText(u) : machineUnit(k);
  };
  const numField = (k: string, read = false): HTMLElement => {
    const v = cur.값?.[k];
    const unit = unitOf(k);
    const f = createInputField({ label: label(k), value: text(v), size: 28, ...(unit ? { unit } : {}) }); // prettier-ignore
    f.input.inputMode = "decimal";
    f.input.dataset.key = k;
    f.input.readOnly = ro || read;
    f.root.classList.toggle("is-changed", !sameVal(v, orig.값?.[k]));
    f.input.addEventListener("change", () => {
      const t = f.input.value.replace(/,/g, "").trim();
      const box = (cur.값 ??= {});
      const n = Number(t);
      if (t && !Number.isFinite(n)) {
        errors.set(k, `${label(k)} · ${L("MF_NumberOnly")}`);
        f.setError(L("MF_NumberOnly"));
        return o.onChange?.();
      }
      errors.delete(k);
      f.setError();
      if (!t) {
        if (k in (orig.값 ?? {})) box[k] = null;
        else delete box[k];
      } else box[k] = n;
      if ((MACHINE_INPUTS as readonly string[]).includes(k)) recoef();
      f.root.classList.toggle("is-changed", !sameVal(box[k], orig.값?.[k]));
      changed(PICKY.includes(k));
      if ((MACHINE_INPUTS as readonly string[]).includes(k)) drawBase();
    });
    return f.root;
  };

  const pickField = (k: string): HTMLElement => {
    const list = k === "주연료종류" ? o.lists.fuels : o.lists.jobs;
    const now = text(cur.값?.[k]);
    const options = [
      { value: "", text: L("MF_None") },
      ...list.map((p) => ({ value: p.value, text: p.text })),
    ];
    if (now && !list.some((p) => p.value === now)) options.push({ value: now, text: `${now} (${L("MF_NoPrice")})` }); // prettier-ignore
    const f = createSelectField({ label: label(k), options, value: now, size: 28 });
    f.select.dataset.key = k;
    f.select.disabled = ro;
    attachPickSearch(f.select, { placeholder: L("MF_PickFind") });
    f.root.classList.toggle("is-changed", !sameVal(now, orig.값?.[k]));
    f.select.addEventListener("change", () => {
      const box = (cur.값 ??= {});
      if (f.select.value) box[k] = f.select.value;
      else if (k in (orig.값 ?? {})) box[k] = orig.값![k] === "" ? "" : null;
      else delete box[k];
      f.root.classList.toggle("is-changed", !sameVal(box[k], orig.값?.[k]));
      changed(true);
    });
    return f.root;
  };

  const setMode = (m: MachineMode): void => {
    const v = (cur.값 ??= {});
    const was = modeOf(cur, mine);
    if (m === was) return;
    if (m === "품셈") for (const k of MACHINE_INPUTS) if (orig.값?.[k] !== undefined) v[k] = clone(orig.값[k]); // prettier-ignore
    if (m === "바로" && !mine) for (const k of MACHINE_INPUTS) delete v[k];
    if (mine) {
      if (m === "바로" && blankNum(v.손료계수)) {
        const e = engineVals(cur, true);
        v.손료계수 = ["상각비계수", "정비비계수", "관리비계수"].reduce(
          (s, k) => s + (Number(e[k]) || 0),
          0,
        );
      }
      if (m === "직접" && !cur.시간당) cur.시간당 = Object.fromEntries((["노무비", "재료비", "경비"] as const).map((k) => [k, Math.round(lastAnswer?.[k] ?? 0)])); // prettier-ignore
      cur.방식 = m;
    }
    recoef();
    rebuild();
    drawAll();
    changed(true);
  };
  const blankNum = (x: unknown): boolean => typeof x !== "number" || !x;

  const drawBase = (): void => {
    const keep = baseBox.firstElementChild?.classList.contains("is-collapsed") ?? false;
    const mode = modeOf(cur, mine);
    const owned = new Set(
      (parts && info?.키 ? ownedCols(parts) : [])
        .map((c) => slotOf(c, mode, mine))
        .flatMap((s) => (s && s[0] === "값" ? [s[1]] : [])),
    );
    const pumsem = mode === "품셈";
    const keys =
      mode === "직접"
        ? []
        : [...new Set([...BASE_KEYS, ...Object.keys(cur.값 ?? {})])].filter(
            (k) => !owned.has(k) && !(MACHINE_INPUTS as readonly string[]).includes(k) && !(pumsem && (MACHINE_COEFS as readonly string[]).includes(k)), // prettier-ignore
          );
    const textBox = (
      lab: string,
      get: string,
      was: string,
      set: (v: string) => void,
    ): HTMLElement => {
      const f = createInputField({ label: lab, value: get, size: 28 });
      f.input.readOnly = ro;
      f.root.classList.toggle("is-changed", get !== was);
      f.input.addEventListener("input", () => {
        set(f.input.value);
        f.root.classList.toggle("is-changed", f.input.value !== was);
        o.onChange?.();
      });
      return f.root;
    };
    const seg = createSegment({
      options: [
        { value: "바로", label: L("MF_CoefDirect") },
        { value: "품셈", label: L("MF_CoefPumsem") },
        ...(mine ? [{ value: "직접", label: L("MF_HourlyDirect") }] : []),
      ],
      value: mode,
      size: 24,
      ariaLabel: L("MS_Mode"),
      onChange: (v) => setMode(v as MachineMode),
    });
    if (ro) seg.root.querySelectorAll("button").forEach((b) => (b.disabled = true));
    const row = (children: HTMLElement[]): HTMLElement => el("div", { className: "lstk-frow", children }); // prettier-ignore
    const card = createPanelCard(L("MS_Base"), keep);
    card.append(
      row([
        textBox(L("MF_Name"), name, text(orig.이름), (v) => (name = v)),
        textBox(L("MF_Spec"), spec, text(orig.규격), (v) => (spec = v)),
      ]),
      row([el("span", { className: "lstk-kind", text: L("MS_Mode") }), seg.root]),
      ...(pumsem
        ? [
            row(MACHINE_INPUTS.map((k) => numField(k))),
            row([
              el("span", { className: "lstk-kind", text: L("MS_Coefs") }),
              ...MACHINE_COEFS.filter((k) => !owned.has(k)).map((k) => numField(k, true)),
            ]),
          ]
        : []),
      ...(keys.length
        ? [row(keys.map((k) => (PICKS.includes(k) ? pickField(k) : numField(k))))]
        : []),
    );
    baseBox.replaceChildren(card);
  };

  const similarBox = (): HTMLElement[] => {
    if (!o.findSimilar || ro) return [];
    const find = createFindList({ placeholder: L("MF_SimilarFind") });
    const card = createPanelCard(L("MF_Similar"), !!(orig.이름 || orig.값 && Object.keys(orig.값).length)); // prettier-ignore
    card.classList.add("lstk-msheet-similar");
    card.append(find.root);
    attachCollapsible(card);
    let n = 0;
    let wait: number | undefined;
    const look = async (): Promise<void> => {
      const me = ++n;
      const got = await o.findSimilar!(find.search.value.trim()).catch(() => []);
      if (me !== n) return;
      find.hint.textContent = got.length ? "" : L("MF_SimilarNone");
      find.setRows(
        got.map((m) => ({
          key: m.key,
          name: `${m.name} ${m.spec}`.trim(),
          tag: m.tag,
          sub: m.key,
          onPick: () => {
            orig = clone(m.row);
            cur = clone(m.row);
            name = m.name;
            spec = m.spec;
            errors.clear();
            info = null;
            parts = null;
            delete (holder as { [COVER]?: unknown })[COVER];
            card.classList.add("is-collapsed");
            setNotice(L("MF_SimilarCopied").replace("{value}", `${m.name} ${m.spec}`.trim()));
            o.onSimilar?.(m);
            drawAll();
            changed(true);
          },
        })),
      );
    };
    find.search.addEventListener("input", () => {
      window.clearTimeout(wait);
      wait = window.setTimeout(() => void look(), 250);
    });
    void look();
    return [card];
  };

  // ── 오른쪽 · 경고 ──
  let lastAnswer: DocAnswer | null = null;
  const drawRight = (): void => {
    const d = sub();
    const head = el("div", {
      className: "lstk__bar",
      children: [
        el("strong", { text: L("MS_Out") }),
        ...(info?.키 ? [el("span", { className: "ui-text ui-text--muted", text: `${info.키} ${info.이름 ?? ""}`.trim() })] : []), // prettier-ignore
      ],
    });
    if (!info) {
      lastAnswer = null;
      foot.replaceChildren();
      return void right.replaceChildren(head, createText(L("MS_Loading"), "muted"));
    }
    if (!d) {
      lastAnswer = null;
      foot.replaceChildren();
      const why = info.까닭 ? ` — ${info.까닭}` : "";
      return void right.replaceChildren(head, createText(`${L("MS_NoFormula")}${why}`, "warning"));
    }
    const shaped = coverDoc(d, given, coverOf(holder), rowEntry(d, engineVals(orig, mine)));
    const a = plain(shaped, given);
    if (cache.takeMissing()) ask();
    lastAnswer = a;
    right.replaceChildren(
      head,
      ...(info.까닭 ? [createText(info.까닭, "warning")] : []),
      buildOut(boundView(shaped, info.값 ?? {}) as StackDoc, a, {
        cache,
        open: opened,
        toggle: (at) => {
          if (opened.has(at)) opened.delete(at);
          else opened.add(at);
          drawRight();
        },
        miss: () => ask(),
        redraw: () => drawRight(),
      }),
    );
    right.append(sheetWorkOut(work()));
    if (cache.takeMissing()) ask();
    foot.replaceChildren(docFoot(a));
  };
  // 846-2 시간당 작업량 — 지금 줄 `값.작업량`(고침 = 지금 줄 · 저장은 부르는 쪽)
  const work = (): SheetWorkOpts => ({
    cur,
    orig,
    ro,
    links: cache.links,
    miss: () => undefined,
    changed: () => changed(),
  });
  const drawWork = (): void => {
    const keep = workBox.firstElementChild?.classList.contains("is-collapsed") ?? false;
    workBox.replaceChildren(sheetWorkCard(work(), keep));
    if (cache.takeMissing()) ask();
  };
  const drawWarn = (): void => {
    const vals: MachineValues = crewView({ ...engineVals(cur, mine), ...(cur.값 ?? {}) });
    if (unitOf("손료계수") !== machineUnit("손료계수")) delete vals.손료계수; // 일 단위 손료(임업) = 시간당 범위 아님
    warn.replaceChildren(
      ...rangeWarnings(vals).map(([k, r]) =>
        createText(L("MS_Range").replace("{name}", label(k)).replace("{value}", r), "warning"),
      ),
    );
  };
  const drawLive = (): void => {
    drawCtl();
    drawWork();
    drawRight();
    drawWarn();
  };
  const drawAll = (): void => {
    drawBase();
    drawLive();
  };
  const setNotice = (t: string): void => {
    notice.replaceChildren(...(t ? [createText(t, "warning")] : []));
  };

  left.append(...similarBox(), notice, warn, ctlBox, workBox, baseBox);
  drawAll();
  ask(true);

  return {
    root,
    setNotice,
    state: (): MachineSheetState => ({
      name: name.trim(),
      spec: spec.trim(),
      row: rowOut(),
      mode: modeOf(cur, mine),
      errors: [...errors.values()],
      changed: JSON.stringify([name, spec, cur]) !== start,
    }),
  };
}