/* =============================================================================
 * M01_MasterData_UI_LogicLab_Detail.ts
 * 「단가산출 로직」 상세 화면 — 컨테이너 넷을 위에서 아래로
 *   ① 기본정보(정본은 읽기 전용 · 비고만 고침) ② 단가산출 상세(인력·자재·경비·그 밖 묶음 + 소계)
 *   ③ 텍스트 수식(자리 — `_LogicLab_Formula.ts`) ④ 시험 계산(입력값 + 결과값 — `Logic_Calc` 그대로)
 * 호표 줄을 누르면 그 줄이 쓰는 자료 모달(`_LogicLab_Modal.ts`)
 * ========================================================================== */

import { el } from "@ui/ui_template_elements";
import type {
  CalcLine,
  ElementBrief,
  HoLine,
  LogicRow,
  NamedFormula,
  TextAnswer,
  TextLine,
  TextPiece,
} from "./M01_MasterData_UI_Logic_Api";
import { buildEditor, qtyKind } from "./M01_MasterData_UI_Logic_Edit";
import { formatMoney, formatPrice } from "./M01_MasterData_UI_Logic_Money";
import { openPicker } from "./M01_MasterData_UI_Logic_Pick";
import { tx } from "./M01_MasterData_UI_Logic_Text";
import { buildFormula } from "./M01_MasterData_UI_LogicLab_Formula";
import {
  condText,
  openMaterialModal,
  openNoteModal,
  openRefModal,
  openLogic,
  openTableModal,
  type PickCond,
} from "./M01_MasterData_UI_LogicLab_Modal";
import { fragmentRow, type Fragment } from "./M01_MasterData_UI_LogicLab_Pill";
import { tl, type LabTextKey } from "./M01_MasterData_UI_LogicLab_Text";
import "./M01_MasterData_UI_LogicLab_Style.css";
import "./M01_MasterData_UI_LogicLab_Pill.css";

/** 서버 조각(`/text` 줄의 `조각`) → 수량 칸 조각 — 요소·표·로직은 알약(글 = 조각 글) · 나머지는 글자 */
function toFragments(pieces: TextPiece[], ctx: DetailContext): Fragment[] {
  return pieces.map((piece): Fragment => {
    const dim = piece.깊이 ? { dim: true } : {};
    if (piece.kind !== "요소" && piece.kind !== "표" && piece.kind !== "로직")
      return { text: piece.글, ...dim };
    const ref = piece.참조;
    const open = (): void => {
      if (!ref) return openNoteModal(piece.글, tl("Pill_NoPick"));
      if (piece.kind === "표")
        openTableModal({ title: piece.글, table: ref.키, row: ref.행, col: ref.열 });
      else if (piece.kind === "요소")
        openRefModal({ title: piece.글, ref: ref.키, prices: ctx.prices });
      else openLogic(ref.키);
    };
    return { pill: { label: piece.글, onClick: open }, ...dim };
  });
}

export interface DetailContext {
  row: LogicRow;
  file: string;
  reasons: string[];
  prices: Record<string, ElementBrief | null>;
  /** 마지막 시험 계산의 줄 — 호표 차례 뒤에 덧줄 */
  lines: CalcLine[] | null;
  /** 마지막 시험 계산의 읽는 식 줄(서버가 줌) */
  text: TextAnswer | null;
  values: Record<string, string>;
  /** 자체 로직 편집기 자리 — 다시 그려도 같은 칸을 씀(고치던 값이 안 날아감) */
  ownHost: HTMLElement;
  onChange: () => void;
  /** 시험 계산 칸(`buildCalc` 가 채움) — 넷째 컨테이너 안에 놓음 */
  calcHost: HTMLElement;
}

type Group = "labor" | "material" | "cost" | "other";
const GROUPS: Group[] = ["labor", "material", "cost", "other"];
const OF_KIND: Record<string, Group> = { 인력: "labor", 재료: "material", 기계: "cost" };
const OF_COST: Record<string, Group> = { 노무비: "labor", 재료비: "material", 경비: "cost" };

/** 줄 종류가 셋 중 어디에도 안 들어가면 「그 밖」 — 다른 로직을 부르는 줄은 비목으로 */
const groupOfHo = (item: HoLine): Group =>
  OF_KIND[item.종류] ?? (item.종류 === "로직" ? OF_COST[item.비목 ?? ""] : undefined) ?? "other";

interface Entry {
  /** 호표 줄 차례(덧줄은 호표 수 + 덧줄 차례) — 서버 조각을 찾는 열쇠 */
  idx: number;
  group: Group;
  name: string;
  spec: string;
  unit: string;
  qty: string;
  qtyTag: string;
  qtyFrag: Fragment[];
  /** 한 줄이 비목 몫으로 갈렸을 때 이 묶음의 몫 이름(예 「노무비」) */
  share?: string;
  price: string;
  amount: number | null;
  /** 덧줄이면 true */
  extra: boolean;
  open: (self: Entry) => void;
  /** 서버 조각으로 그린 단가 자리 · 수량 풀이 — 줄 모달이 씀(붙기 전엔 없음) */
  unitFrag?: Fragment[];
  piecesFrag?: Fragment[];
}

/** 재료 고르기 줄 — `요소` 가 글 대신 {구분·상세구분·규격·대표} 객체 */
const condOf = (item: HoLine): PickCond | null =>
  typeof item.요소 === "object" && item.요소 !== null ? (item.요소 as unknown as PickCond) : null;
const condLabel = (cond: PickCond): string =>
  [cond.구분, cond.상세구분, cond.규격].filter(Boolean).join(" · ");

const groupName = (group: Group): string => tl(`G_${group}` as LabTextKey);

const section = (title: string, body: HTMLElement[], hint = ""): HTMLElement =>
  el("section", {
    className: "m01-logic__section m01lab__box",
    children: [
      el("div", {
        className: "m01-logic__section-head",
        children: [
          el("h3", { text: title }),
          ...(hint ? [el("span", { className: "m01-logic__muted", text: hint })] : []),
        ],
      }),
      ...body,
    ],
  });

function infoBox(ctx: DetailContext): HTMLElement {
  const row = ctx.row;
  const own = isOwnLogic(row);
  const field = (label: string, key: "이름" | "원문번호" | "결과단위" | "출처"): HTMLElement => {
    if (!own) return cell(label, row[key] ?? "");
    const box = el("input", { className: "m01-logic__input", attrs: { "data-own": key } });
    box.value = row[key] ?? "";
    box.addEventListener("input", () => {
      row[key] = box.value;
      ctx.onChange();
    });
    return el("label", {
      className: "m01lab__cell",
      children: [el("span", { className: "m01-logic__muted", text: label }), box],
    });
  };
  const cell = (label: string, value: string): HTMLElement =>
    el("div", {
      className: "m01lab__cell",
      children: [
        el("span", { className: "m01-logic__muted", text: label }),
        el("span", { text: value || "—" }),
      ],
    });
  const note = el("textarea", { className: "m01-logic__input m01-logic__note" });
  note.value = row.비고 ?? "";
  note.addEventListener("input", () => {
    if (note.value.trim()) row.비고 = note.value;
    else delete row.비고;
    ctx.onChange();
  });
  const reasons = ctx.reasons.length
    ? [
        el("div", {
          className: "m01-logic__reasons",
          children: [
            el("strong", { text: tx("Head_Blocked") }),
            ...ctx.reasons.map((r) => el("div", { text: r })),
          ],
        }),
      ]
    : [];
  return section(tl("Info_Title"), [
    el("p", {
      className: "m01-logic__muted",
      text: tl(own ? "Info_Own" : "Info_ReadOnly"),
    }),
    ...reasons,
    el("div", {
      className: "m01lab__info",
      children: [
        cell(tx("Head_File"), ctx.file),
        cell(tx("Head_Key"), row.키),
        field(tx("Head_Number"), "원문번호"),
        field(tx("Head_Name"), "이름"),
        field(tx("Head_Unit"), "결과단위"),
        field(tx("Head_Source"), "출처"),
        cell(tx("Head_Owner"), row.소유 ?? ""),
        el("label", {
          className: "m01lab__cell m01lab__cell--wide",
          children: [el("span", { className: "m01-logic__muted", text: tx("Head_Note") }), note],
        }),
      ],
    }),
  ]);
}

/** 계산된 줄은 서버가 준 비목별 몫으로 묶음에 나눠 넣음 — 로직을 부르는 줄도 노무비·재료비·경비로 갈림 */
const spread = (e: Entry, line?: CalcLine): Entry[] => {
  const parts = Object.entries(line?.비목 ?? {}).filter(([, v]) => v !== 0);
  if (!parts.length) return [e];
  return parts.map(([k, v]) => ({
    ...e,
    group: OF_COST[k] ?? "other",
    amount: v,
    ...(parts.length > 1
      ? {
          share: k,
          // 몫 줄 단가 = 단가 × (몫 금액 ÷ 줄 금액) — 곱하기 수량이 몫 금액과 맞게
          ...(line && line.금액 && line.단가 != null
            ? { price: formatPrice((line.단가 * v) / line.금액) }
            : {}),
        }
      : {}),
  }));
};

function entries(ctx: DetailContext): Entry[] {
  const middles: NamedFormula[] = ctx.row.중간 ?? [];
  const ho = ctx.row.호표 ?? [];
  const out: Entry[] = ho.flatMap((item, i) => {
    const line = ctx.lines?.[i];
    const cond = condOf(item);
    const brief = cond ? ctx.prices[condText(cond)] : ctx.prices[item.요소];
    const price = line ? line.단가 : brief?.값;
    const entry: Entry = {
      idx: i,
      group: groupOfHo(item),
      name: item.이름 ?? (cond ? condLabel(cond) : item.요소),
      spec: item.규격 ?? brief?.규격 ?? "",
      unit: item.단위 ?? "",
      qty: item.수량,
      qtyTag: qtyKind(item.수량) === tx("Ho_QtyTable") ? tl("Tag_Table") : qtyKind(item.수량),
      qtyFrag: [{ text: item.수량 }],
      price: price === undefined || price === null ? "" : formatPrice(price),
      amount: line ? line.금액 : null,
      extra: false,
      open: (self) =>
        openMaterialModal({
          unitFrag: self.unitFrag,
          qtyFrag: self.piecesFrag,
          title: item.이름 ?? (cond ? condLabel(cond) : item.요소),
          expr: item.수량,
          ...(cond ? { cond, unit: item.단위 } : { element: item.요소 }),
          prices: ctx.prices,
          middles,
          values: ctx.values,
        }),
    };
    return spread(entry, line);
  });
  (ctx.row.덧줄 ?? []).forEach((extra, i) => {
    const line = ctx.lines?.[ho.length + i];
    const entry: Entry = {
      idx: ho.length + i,
      group: OF_COST[extra.비목 ?? ""] ?? "other",
      name: extra.이름,
      spec: "",
      unit: "",
      qty: extra.식,
      qtyTag: tl("Extra"),
      qtyFrag: [{ text: extra.식 }],
      price: "",
      amount: line ? line.금액 : null,
      extra: true,
      open: (self) =>
        openMaterialModal({
          unitFrag: self.unitFrag,
          qtyFrag: self.piecesFrag,
          title: extra.이름,
          expr: extra.식,
          prices: ctx.prices,
          middles,
          values: ctx.values,
        }),
    };
    out.push(...spread(entry, line));
  });
  attachPieces(out, ctx);
  return out;
}

/** 서버 `/text` 줄의 조각을 호표 줄 차례(덧줄은 덧줄 차례)로 이음 — 서버는 묶음마다 호표 차례대로 줄을 주므로
 *  이름을 차례로 따라가며 줄 차례에 맞춤 · 금액 0 로직 부름 줄처럼 묶음이 달라도 찾음 ·
 *  끝내 못 찾으면 날식 대신 빈칸(계산 전 · 서버 실패면 식 글자 그대로) */
function attachPieces(all: Entry[], ctx: DetailContext): void {
  if (!ctx.text?.ok) return;
  const ho = ctx.row.호표 ?? [];
  const names = [
    ...ho.map((item) => item.이름 ?? (condOf(item) ? condLabel(condOf(item)!) : item.요소)),
    ...(ctx.row.덧줄 ?? []).map((extra) => extra.이름),
  ];
  const found = new Map<string, TextLine>();
  for (const g of ctx.text.groups) {
    let from = 0;
    for (const line of g.줄) {
      const at = names.findIndex((n, i) => i >= from && n === line.이름);
      if (at < 0) continue;
      found.set(`${g.비목}|${at}`, line);
      from = at + 1;
    }
  }
  const costs = Object.keys(OF_COST);
  for (const e of all) {
    const own = costs.find((c) => OF_COST[c] === e.group);
    const line = [own, ...costs].map((c) => found.get(`${c}|${e.idx}`)).find(Boolean);
    const pieces = line?.조각;
    e.qtyFrag = e.piecesFrag = pieces?.length ? toFragments(pieces, ctx) : [];
    if (line?.요소조각?.length) e.unitFrag = toFragments(line.요소조각, ctx);
  }
}

const cellOf = (text: string, className = ""): HTMLElement => el("td", { className, text });

function lineRow(e: Entry): HTMLElement {
  const tr = el("tr", {
    className: `m01lab__line${e.extra ? " m01lab__line--extra" : ""}`,
    attrs: { tabindex: "0", "data-line": e.name },
    children: [
      el("td", {
        children: [
          el("div", { text: e.name }),
          ...(e.share
            ? [el("div", { className: "m01-logic__tag", text: `${e.share} ${tl("Share")}` })]
            : []),
          ...(e.spec ? [el("div", { className: "m01-logic__muted", text: e.spec })] : []),
        ],
      }),
      cellOf(e.unit),
      el("td", {
        className: "m01lab__qty-cell",
        children: [
          el("span", { className: "m01-logic__tag", text: e.qtyTag }),
          fragmentRow(e.qtyFrag),
        ],
      }),
      cellOf(e.price, "m01-logic__money"),
      cellOf(e.amount === null ? "" : formatMoney(e.amount), "m01-logic__money"),
    ],
  });
  tr.addEventListener("click", () => e.open(e));
  tr.addEventListener("keydown", (ev) => ev.key === "Enter" && e.open(e));
  return tr;
}

function groupTable(group: Group, mine: Entry[], calculated: boolean): HTMLElement[] {
  const sub = mine.reduce((s, e) => s + (e.amount ?? 0), 0);
  const empty = el("tr", {
    children: [
      el("td", {
        attrs: { colspan: "5" },
        className: "m01-logic__muted",
        text: tl("Empty_Group"),
      }),
    ],
  });
  const subtotal = el("tr", {
    className: "m01lab__subtotal",
    attrs: { "data-group": group, "data-subtotal": calculated ? String(sub) : "" },
    children: [
      el("td", { attrs: { colspan: "4" }, text: `${groupName(group)} ${tl("Subtotal")}` }),
      cellOf(calculated ? formatMoney(sub) : "—", "m01-logic__money"),
    ],
  });
  const headers = [
    tl("Col_Name"),
    tl("Col_Unit"),
    tl("Col_Qty"),
    tl("Col_Price"),
    tl("Col_Amount"),
  ];
  return [
    el("h4", { className: "m01lab__group", text: groupName(group) }),
    el("div", {
      className: "m01-logic__scroll",
      children: [
        el("table", {
          className: "m01-logic__grid m01lab__ho",
          children: [
            el("thead", {
              children: [el("tr", { children: headers.map((h) => el("th", { text: h })) })],
            }),
            el("tbody", { children: [...(mine.length ? mine.map(lineRow) : [empty]), subtotal] }),
          ],
        }),
      ],
    }),
  ];
}

/** 자체 로직(키 GX…) — 정본은 아님 */
export const isOwnLogic = (row: LogicRow): boolean => row.키.startsWith("GX");

/** 자체 로직은 정본 화면과 같은 편집기를 호표 아래에 폄(머리 칸은 기본정보에서 고치므로 숨김) */
function ownEditor(ctx: DetailContext): HTMLElement {
  if (!ctx.ownHost.childElementCount)
    buildEditor(ctx.ownHost, {
      row: ctx.row,
      file: ctx.file,
      isNew: false,
      files: [],
      reasons: [],
      prices: ctx.prices,
      lines: ctx.lines,
      onChange: ctx.onChange,
      onFile: () => undefined,
      onPick: openPicker,
    });
  return el("details", {
    className: "m01lab__edit",
    attrs: { open: "" },
    children: [el("summary", { text: tl("Edit_Title") }), ctx.ownHost],
  });
}

function hoBox(ctx: DetailContext): HTMLElement {
  const money = !("결과" in ctx.row) && (ctx.row.결과단위 ?? "").startsWith("원");
  if (!money) {
    return section(tl("Ho_Title"), [
      el("p", { className: "m01-logic__muted", text: tl("Not_Money") }),
      el("pre", { className: "m01lab__expr", text: ctx.row.결과?.식 ?? "" }),
    ]);
  }
  const all = entries(ctx);
  const calculated = ctx.lines !== null;
  const tables = GROUPS.flatMap((group) => {
    const mine = all.filter((e) => e.group === group);
    return group === "other" && !mine.length ? [] : groupTable(group, mine, calculated); // 그 밖은 있을 때만
  });
  const total = all.reduce((s, e) => s + (e.amount ?? 0), 0);
  const totalLine = el("p", {
    className: "m01lab__total",
    attrs: { "data-sum": calculated ? String(total) : "" },
    text: `${tl("Total")} ${calculated ? formatMoney(total) : "—"}`,
  });
  // 자체 로직 — 고치는 자리는 편집기 하나 · 읽기용 묶음 표는 접어 둠(펼치면 소계가 보임)
  const fold = el("details", {
    className: "m01lab__fold",
    attrs: ctx.ownHost.dataset.fold ? { open: "" } : {},
    children: [el("summary", { text: tl("Ho_Fold") }), ...tables],
  });
  fold.addEventListener("toggle", () => (ctx.ownHost.dataset.fold = fold.open ? "1" : ""));
  const blocks = isOwnLogic(ctx.row) ? [ownEditor(ctx), fold, totalLine] : [...tables, totalLine];
  const hint = calculated ? tl("Click_Hint") : `${tl("Click_Hint")} · ${tl("Calc_First")}`;
  return section(tl("Ho_Title"), blocks, hint);
}

/** 상세 화면 넷을 `host` 에 쌓음 */
export function buildLabDetail(host: HTMLElement, ctx: DetailContext): void {
  const formula = el("div", { className: "m01lab__formula" });
  buildFormula(formula, { text: ctx.text });
  // 다시 그리면 포커스가 빠짐 — 고치던 칸(편집기 · 기본정보)을 기억해 되돌림
  const active = document.activeElement;
  const kept =
    active instanceof HTMLInputElement || active instanceof HTMLTextAreaElement
      ? { node: active, from: active.selectionStart, to: active.selectionEnd }
      : null;
  host.replaceChildren(
    infoBox(ctx),
    hoBox(ctx),
    section(tl("Formula_Title"), [formula]),
    section(tl("Calc_Title"), [ctx.calcHost]),
  );
  const own = kept?.node.dataset.own; // 기본정보 칸은 새로 만들어지므로 이름표로 다시 찾음
  const back = own ? host.querySelector<HTMLInputElement>(`[data-own="${own}"]`) : kept?.node;
  if (kept && back && (own || ctx.ownHost.contains(back))) {
    back.focus();
    if (kept.from !== null) back.setSelectionRange(kept.from, kept.to);
  }
}