/* =============================================================================
 * M02_MasterTemplete_Labor_Detail.ts
 * 일위대가 상세(39-3) — 구조물 열마다 하나(`labor/<열>.json`) · UI_Main 종류 `labor` 가 이 부품을 붙임
 * (양식 길 읽기 · [저장] · [다시 읽기]는 UI_Main). 차례 = 정보(단위 · 본뜬) → 담은 로직 → 자재목록 → 다이어그램.
 *  · 담은 로직 줄 누름 = 입력 모달(`Labor_Input`) · [확인] = 화면 캐시만 · 저장은 [저장]
 *  · 금액 = 서버 calc(기준 ③ · 최신 응답만 · 저장 안 함) · 고칠 때마다 뒤에서 다시 셈
 *  · 같은 로직 두 번 · 같은 자재 두 번 막음 · 빈 일위대가도 저장 됨
 * ========================================================================== */

import { createButton, createInputField, el, showToast } from "@ui/ui_template_elements";
import { ROUTES } from "@config/config_frontend";
import { navigateTo } from "../A00_Common/router";
import { setPendingLogicKey } from "../M01_MasterData/M01_MasterData_UI_Side";
import { readTemplate, type ItemLogic, type Layer } from "./M02_MasterTemplete_Api_Fetch";
import { settle } from "./M02_MasterTemplete_Labor_Calc";
import {
  areaLinks,
  calcLabor,
  fetchLogicInputs,
  normalizeLabor,
  type LaborCalc,
  type LaborDoc,
  type LaborRow,
} from "./M02_MasterTemplete_Labor_Api";
import {
  buildLaborDiagram,
  diagramTitle,
  renderComboDiagram,
} from "./M02_MasterTemplete_Labor_Diagram";
import { openLaborInput, openQtyModal, type GoArea } from "./M02_MasterTemplete_Labor_Input";
import { openLogicPicker } from "./M02_MasterTemplete_Labor_Pick";
import { logicTable, matTable } from "./M02_MasterTemplete_Labor_Rows";
import { tc } from "./M02_MasterTemplete_Labor_Text";
import { keepKnown } from "./M02_Labor_Values_Model";
import { pickMaterial } from "./M02_Material_Pick";
import "../M01_MasterData/M01_MasterData_UI_Logic_Style.css";
import "../M01_MasterData/M01_MasterData_UI_LogicLab_Style.css";
import "@ui/ui_template_general_layout.css";
import "./M02_MasterTemplete_Labor.css";

export interface LaborDetailOptions {
  layer: Layer;
  column: string;
  readOnly: boolean;
  /** 저장 안 한 고침이 생기거나 사라짐 */
  onChanged: (dirty: boolean) => void;
  /** 「면적산출에서 잇기」 — 그 열 면적산출 상세로(옮겨 가면 참 · 취소 = 거짓 · 없으면 단추 없음) */
  goArea: GoArea | null;
}

export interface LaborDetailHandle {
  getDoc: () => LaborDoc;
  destroy: () => void;
}

export function mountLaborDetail(
  host: HTMLElement,
  doc: unknown,
  opt: LaborDetailOptions,
): LaborDetailHandle {
  const cur = normalizeLabor(doc, opt.column);
  const saved = JSON.stringify(cur);
  const edit = !opt.readOnly;
  const logics = new Map<string, ItemLogic>();
  let calc: LaborCalc | null = null;
  let fail: string | null = null;
  let seq = 0;
  let timer = 0;
  let alive = true;
  /** 그 열 면적산출의 알약 → 칸 · 값(저장본 · 서버 calc 와 같은 것) */
  let links = new Map<string, { 칸: string; 값: number | null }>();
  const cells = (): Map<string, string> => new Map([...links].map(([k, v]) => [k, v.칸]));
  const given = (): Record<string, number> =>
    Object.fromEntries([...links].flatMap(([k, v]) => (v.값 === null ? [] : [[k, v.값]])));

  const logicHost = el("div");
  const matHost = el("div");
  const dgHost = el("div");
  const dgBox = el("details", {
    className: "m01lab__box m01-logic__section m02-labor__dg",
    attrs: { open: "" },
    children: [el("summary", { text: diagramTitle() }), dgHost],
  });

  const lineOf = (key: string) => calc?.줄.find((l) => l.로직 === key);
  const matOf = (code: string) => calc?.자재.find((m) => m.코드 === code);

  const drawDg = (): void => {
    if (!dgBox.open) return;
    const data = buildLaborDiagram({
      rows: cur.담은로직,
      logics: [...logics.values()],
      calc,
      mats: cur.자재.length,
    });
    renderComboDiagram(dgHost, data, {
      focusInput: (key) => {
        const i = cur.담은로직.findIndex((r) => r.로직 === key);
        if (i >= 0) openRow(i);
      },
      // 로직 카드 → 단가산출 로직 화면(떠날 때 물음은 UI_Main 의 leave guard)
      openLogic: (key) => {
        setPendingLogicKey(key);
        navigateTo(ROUTES.M01_MASTER_DATA);
      },
    });
  };
  dgBox.addEventListener("toggle", drawDg);

  const draw = (): void => {
    logicHost.replaceChildren(
      logicTable(
        { rows: cur.담은로직, logics, calc, fail, cells: cells() },
        // 읽기만이면 순서 · 빼기 없음(줄 누름 = 보기 모달은 둠)
        edit ? { open: openRow, move, remove: removeRow } : { open: openRow },
      ),
    );
    matHost.replaceChildren(
      matTable(
        { mats: cur.자재, calc, fail, cells: cells() },
        edit ? { open: openMat, remove: removeMat } : { open: openMat },
      ),
    );
    drawDg();
  };

  /** 서버 다시 셈 — 늦게 온 답은 버림(최신 응답만) */
  const recalc = (): void => {
    window.clearTimeout(timer);
    timer = window.setTimeout(async () => {
      const mine = ++seq;
      calc = null;
      fail = null;
      draw();
      try {
        const got = await calcLabor(opt.layer, opt.column, cur);
        if (!alive || mine !== seq) return;
        calc = got;
      } catch (error) {
        if (!alive || mine !== seq) return;
        fail = error instanceof Error ? error.message : tc("Labor_Calc_Fail");
      }
      draw();
    }, 150);
  };

  /** `qtyOnly` = 수량만 바뀜 — 기준은 그대로라 짝 셈(`Labor_Calc.settle`)으로 바로 곱함(서버 안 부름) */
  const changed = (qtyOnly = false): void => {
    opt.onChanged(JSON.stringify(cur) !== saved);
    if (qtyOnly && calc) {
      calc = settle(calc, cur, given());
      draw();
    } else recalc();
  };

  /** 이은 칸 글 「B6 = 12.5 ㎡」 — 알약이 칸에 안 이어졌으면 null */
  const linkedText = (pill: string | null | undefined, unit: string): string | null => {
    const at = pill ? links.get(pill) : undefined;
    if (!at) return null;
    return `${at.칸} = ${at.값 === null ? "—" : at.값.toLocaleString("ko-KR")}${unit ? ` ${unit}` : ""}`;
  };

  /** 아직 안 받은 로직 입력 목록만 받음 */
  const loadLogics = async (): Promise<void> => {
    const want = cur.담은로직.map((r) => r.로직).filter((k) => !logics.has(k));
    if (!want.length) return;
    try {
      const got = await fetchLogicInputs(want);
      for (const l of got.로직) logics.set(l.로직, l);
    } catch (error) {
      showToast(error instanceof Error ? error.message : tc("Load_Failed"), "error");
    }
  };

  function move(i: number, d: number): void {
    const j = i + d;
    if (j < 0 || j >= cur.담은로직.length) return;
    [cur.담은로직[i], cur.담은로직[j]] = [cur.담은로직[j], cur.담은로직[i]];
    changed();
  }
  function removeRow(i: number): void {
    cur.담은로직.splice(i, 1);
    changed();
  }
  function removeMat(i: number): void {
    cur.자재.splice(i, 1);
    changed();
  }

  function openRow(i: number): void {
    const row: LaborRow = cur.담은로직[i];
    const logic = logics.get(row.로직) ?? null;
    const line = lineOf(row.로직);
    openLaborInput({
      title: `${row.로직} ${logic?.이름 ?? ""}`.trim(),
      logic,
      values: row.입력값,
      memo: row.메모,
      seat: {
        qty: row.수량,
        linked: linkedText(line?.알약, line?.분모 ?? ""),
        unit: line?.분모 ?? "",
      },
      readOnly: !edit,
      goArea: opt.goArea,
      done: (next) => {
        const values = logic ? keepKnown(logic.입력, next.입력값).kept : next.입력값;
        const qtyOnly = JSON.stringify(values) === JSON.stringify(row.입력값);
        row.입력값 = values;
        row.메모 = next.메모;
        row.수량 = next.수량;
        changed(qtyOnly);
      },
    });
  }

  function openMat(i: number): void {
    const mat = cur.자재[i];
    const line = matOf(mat.코드);
    openQtyModal(
      `${mat.코드} ${mat.이름 ?? ""}`.trim(),
      {
        qty: mat.수량,
        linked: linkedText(line?.알약, mat.단위 ?? ""),
        unit: mat.단위 ?? "",
      },
      !edit,
      opt.goArea,
      (qty) => {
        mat.수량 = qty;
        changed(true);
      },
    );
  }

  const addLogic = createButton({
    label: tc("AddLogic"),
    variant: "filled",
    size: "sm",
    onClick: () =>
      openLogicPicker((x) => {
        if (cur.담은로직.some((r) => r.로직 === x.키))
          return showToast(tc("Labor_Already").replace("{value}", `${x.키} ${x.이름}`), "error");
        cur.담은로직.push({ 로직: x.키, 메모: null, 입력값: {}, 수량: null });
        void loadLogics().then(() => changed());
      }),
  });
  const addMat = createButton({
    label: tc("Labor_AddMat"),
    variant: "filled",
    size: "sm",
    onClick: () =>
      pickMaterial((m) => {
        if (cur.자재.some((x) => x.코드 === m.코드))
          return showToast(
            tc("Labor_AlreadyMat").replace("{value}", `${m.코드} ${m.이름 ?? ""}`),
            "error",
          );
        cur.자재.push({ 코드: m.코드, 이름: m.이름, 규격: m.규격, 단위: m.단위, 수량: null });
        changed();
      }),
  });

  const unit = createInputField({ type: "text", label: tc("Labor_Unit") });
  unit.input.value = cur.단위 ?? "";
  unit.input.readOnly = !edit;
  unit.input.maxLength = 20;
  unit.input.setAttribute("data-labor-field", "단위");
  unit.input.addEventListener("input", () => {
    cur.단위 = unit.input.value.trim() || null;
    opt.onChanged(JSON.stringify(cur) !== saved);
  });
  const origin = createInputField({ type: "text", label: tc("Labor_Origin") });
  origin.input.value = cur.본뜬?.키 ? `${cur.본뜬.층} ${cur.본뜬.키}` : tc("Origin_Self");
  origin.input.readOnly = true;

  const section = (title: string, button: HTMLElement | null, body: HTMLElement): HTMLElement =>
    el("section", {
      className: "m01lab__box m01-logic__section",
      children: [
        el("div", {
          className: "m01-logic__section-head",
          children: [el("h3", { text: title }), ...(edit && button ? [button] : [])],
        }),
        body,
      ],
    });

  host.replaceChildren(
    el("div", {
      className: "m01-logic__editor m01-combo m02-labor__edit",
      attrs: { "data-labor": opt.column },
      children: [
        el("section", {
          className: "m01lab__box m01-logic__section",
          children: [el("div", { className: "m01lab__info", children: [unit.root, origin.root] })],
        }),
        section(tc("Logics_Title"), addLogic, logicHost),
        section(tc("Labor_Mats"), addMat, matHost),
        dgBox,
      ],
    }),
  );
  draw();
  // 로직 입력 목록 · 면적산출 이은 칸(없으면 빈 것 — 새 구조물)을 받은 뒤 첫 계산
  void Promise.all([
    loadLogics(),
    readTemplate(opt.layer, "area", opt.column, null).then(
      (got) => (links = areaLinks(got.문서)),
      () => undefined,
    ),
  ]).then(() => {
    if (alive) recalc();
  });

  return {
    getDoc: () => cur,
    destroy: () => {
      alive = false;
      window.clearTimeout(timer);
      host.replaceChildren();
    },
  };
}