/* =============================================================================
 * M01_MasterData_UI_Logic_CalcPick.ts
 * 시험 계산의 재료 · 기계 고르기 — 재료 줄마다 「잡힌 품목 + 품목 고르기」 · 기계 입력은 단추 하나
 * 누르면 마스터 표 모달(`PickTable`) · 고른 재료는 `고름`(호표 줄 차례 → 키)에 실어 다시 계산 · 저장 안 함
 * ========================================================================== */

import { createButton, el } from "@ui/ui_template_elements";
import { fetchRows, type Row } from "./M01_MasterData_Api_Fetch";
import type { CalcLine, ElementBrief, LogicInput, LogicRow } from "./M01_MasterData_UI_Logic_Api";
import { openPickTable } from "./M01_MasterData_UI_Logic_PickTable";
import { tx } from "./M01_MasterData_UI_Logic_Text";
import { condText, headWord, type PickCond } from "./M01_MasterData_UI_LogicLab_Modal";

interface Chosen {
  ref: string;
  label: string;
}

/** 로직마다 넣은 값(`values`)에 딸린 고른 재료 — 다시 그려도 남고 서버에는 계산 요청에만 실림 */
const chosen = new WeakMap<Record<string, string>, Map<number, Chosen>>();
const picksOf = (values: Record<string, string>): Map<number, Chosen> => {
  let mine = chosen.get(values);
  if (!mine) chosen.set(values, (mine = new Map()));
  return mine;
};

/** 계산 요청 몸의 `고름` — 고른 것이 없으면 안 실음 */
export function pickBody(values: Record<string, string>): { 고름?: Record<string, string> } {
  const mine = picksOf(values);
  return mine.size
    ? { 고름: Object.fromEntries([...mine].map(([i, c]) => [String(i), c.ref])) }
    : {};
}

const nameOf = (row: Row): string => `${row["이름"] ?? ""} ${row["규격"] ?? ""}`.trim();

const MATERIAL_KEYS = /^MT\d{6}$/;
const MACHINE_CODE = /^\d{4}-\d{4}$/;
const MACHINE_KEY = /^EQ\d{6}$/;

/** 재료 키 목록 입력 — 표 모달로 바뀌어 걷음 */
export const isMaterialKeyInput = (spec: LogicInput): boolean =>
  !!spec.고르기?.length && spec.고르기.every((o) => MATERIAL_KEYS.test(String(o)));

const isMachineInput = (spec: LogicInput): boolean =>
  !!spec.고르기?.length &&
  spec.고르기.every((o) => MACHINE_CODE.test(String(o)) || MACHINE_KEY.test(String(o)));

const pickButton = (label: string, onClick: () => void): HTMLButtonElement =>
  createButton({ label, variant: "ghost", onClick });

const line = (label: string, current: HTMLElement, button: HTMLElement): HTMLElement =>
  el("div", {
    className: "m01-logic__field m01-logic__field--wide",
    children: [el("span", { text: label }), el("div", { children: [current, button] })],
  });

/** 재료 줄마다 한 칸 — 지금 잡힌 품목 + 품목 고르기 */
export function materialRows(
  row: LogicRow,
  prices: Record<string, ElementBrief | null>,
  values: Record<string, string>,
  again: () => void,
): HTMLElement[] {
  const mine = picksOf(values);
  return (row.호표 ?? [])
    .map((item, i) => ({ item, i }))
    .filter((x) => x.item.종류 === "재료")
    .map(({ item, i }) => {
      const cond =
        typeof item.요소 === "object" && item.요소 !== null
          ? (item.요소 as unknown as PickCond)
          : null;
      const brief = (cond ? prices[condText(cond)] : prices[item.요소]) ?? null;
      const named = item.이름 && !/^[A-Z]{2}\d{6}/.test(item.이름) ? item.이름 : "";
      const label = named || (brief?.이름 as string | undefined) || "";
      const held = mine.get(i);
      const nowName =
        held?.label ?? (brief ? `${brief.이름 ?? ""} ${brief.규격 ?? ""}`.trim() : "") ?? "";
      const seeds = [cond?.["검색어"], cond?.이름, cond?.상세구분, cond?.구분, label]
        .map(headWord)
        .filter((w, k, all) => w && all.indexOf(w) === k);
      const current = el("span", {
        className: "m01-logic__muted",
        text: `${nowName || tx("Mat_NoPrice")} `,
        attrs: { "data-mat-idx": String(i), "data-ref": brief?.ref ?? "" },
      });
      const button = pickButton(tx("Pick_Item"), () =>
        openPickTable({
          kind: "재료",
          title: `${tx("Pick_MatTitle")} · ${label}`,
          seed: seeds[0] ?? "",
          alt: seeds.slice(1),
          isCurrent: (r) => String(r["키"]) === (mine.get(i)?.ref ?? current.dataset.ref),
          onPick: (r) => {
            mine.set(i, { ref: String(r["키"]), label: nameOf(r) });
            current.textContent = `${nameOf(r)} `;
            again();
          },
        }),
      );
      return line(`${label}${item.규격 ? ` ${item.규격}` : ""}`, current, button);
    });
}

/** 계산 답의 `품목` 을 잡힌 품목 글로 — 고른 재료가 있는 줄은 그대로 */
export function showItems(
  host: HTMLElement,
  values: Record<string, string>,
  lines: CalcLine[],
): void {
  const mine = picksOf(values);
  host.querySelectorAll<HTMLElement>("[data-mat-idx]").forEach((span) => {
    const i = Number(span.dataset.matIdx);
    const item = lines[i]?.품목;
    if (!item || mine.has(i)) return;
    span.dataset.ref = item.키;
    span.textContent = `${`${item.이름 ?? ""} ${item.규격 ?? ""}`.trim() || item.키} `;
  });
}

/** 기계 입력 칸 — 표 모달로 고르면 입력값(원문 분류번호 · 키 목록이면 키) */
const machines = new Map<string, Row | null>();
async function machineRow(code: string): Promise<Row | null> {
  if (!machines.has(code)) {
    let found: Row | null = null;
    try {
      const got = await fetchRows("기계.json", 1, 5, code);
      found = got.rows.find((r) => r["원문번호"] === code || r["키"] === code) ?? null;
    } catch {
      found = null;
    }
    machines.set(code, found);
  }
  return machines.get(code) ?? null;
}

export function machineControl(
  spec: LogicInput,
  values: Record<string, string>,
  again: () => void,
): HTMLElement | null {
  if (!isMachineInput(spec)) return null;
  const current = el("span", { className: "m01-logic__muted" });
  const paint = (): void => {
    const code = values[spec.이름] ?? "";
    const known = machines.get(code);
    current.textContent = `${code ? `${code}${known ? ` · ${nameOf(known)}` : ""}` : tx("Mat_NoPrice")} `;
    if (code && !machines.has(code)) void machineRow(code).then(paint);
  };
  paint();
  const button = pickButton(tx("Pick_Machine"), () => {
    const code = values[spec.이름] ?? "";
    const known = machines.get(code);
    openPickTable({
      kind: "기계",
      title: `${tx("Pick_Machine")} · ${spec.이름}`,
      seed: String(known?.["이름"] ?? spec.이름),
      isCurrent: (r) => !!code && (r["원문번호"] === code || r["키"] === code),
      onPick: (r) => {
        const useKey = MACHINE_KEY.test(String(spec.고르기?.[0]));
        const value = String(useKey ? r["키"] : r["원문번호"]);
        machines.set(value, r);
        values[spec.이름] = value;
        paint();
        again();
      },
    });
  });
  return el("div", { children: [current, button] });
}