/* =============================================================================
 * M02_MasterTemplete_Hopyo_Ledger.ts
 * 일위대가 실무자료 별칭 장부 화면(PLAN 338-3 · 설계 4-4) — 본 칸 · 좌측 판 [별칭 장부] 로 엶.
 *  · 표 = 엑셀 품명 · 규격 · 단위 | 갈래 | 우리 로직(여럿) · 옵션 · 배 · 몫 | 누가 · 때 · 처음 파일 | 층(위 층 회색 읽기만)
 *  · 할 일 = 찾기 · 갈래 거름 · 갈래 바꿈 · [로직 바꿈] · [로직 더함] · 배 · 몫 · [옵션] · [지우기] ·
 *    위 층 줄 [내 층으로 고쳐 씀]
 *  · 고친 것 = sessionStorage `m02-hopyo-ledger:{층}:{주인}` → [저장] 때만 `PUT`(서버가 짝을 다시 검사)
 *  · 안 둠 = 발주처 칸 · 자동 올림 · 자동 합침 · 쓰인 횟수 · 회사로 올리기.
 * ========================================================================== */

import { createButton, el, showToast } from "@ui/ui_template_elements";
import { loadingError, showLoading } from "@ui/ui_template_loading";
import {
  readLedger,
  saveLedger,
  type HopyoScope,
  type LedgerEntry,
  type LedgerPair,
  type LedgerRow,
} from "./M02_MasterTemplete_Hopyo_Api";
import { fetchLogicInputs } from "./M02_MasterTemplete_Labor_Api";
import { openLaborInput } from "./M02_MasterTemplete_Labor_Input";
import { openLogicPicker } from "./M02_MasterTemplete_Labor_Pick";
import "./M02_MasterTemplete_Hopyo.css";

export const LEDGER_TITLE = "별칭 장부";
const KINDS = ["짝", "우리에 없음", "안 씀"] as const;
const LAYER_TEXT: Record<string, string> = { system: "마스터", company: "회사", personal: "개인" };
type Edits = Record<string, LedgerEntry | null>;
/** 화면 한 줄 — 서버 줄 위에 고친 것 */
export type LedgerView = LedgerRow & { 고친?: boolean };

export const ledgerKey = (scope: HopyoScope): string =>
  `m02-hopyo-ledger:${scope.layer}:${scope.owner ?? ""}`;
function loadEdits(k: string): Edits {
  try {
    return JSON.parse(sessionStorage.getItem(k) ?? "{}") as Edits;
  } catch {
    return {};
  }
}
function saveEdits(k: string, edits: Edits): void {
  try {
    if (Object.keys(edits).length) sessionStorage.setItem(k, JSON.stringify(edits));
    else sessionStorage.removeItem(k);
  } catch {
    /* 캐시 못 씀 = 이 화면에만 남음 */
  }
}

/** 쓰기 꼴 — 보기 칸(층 · 누가 · 때 …) 뺌 */
export const entryOf = (row: LedgerEntry): LedgerEntry => ({
  원래: row.원래,
  갈래: row.갈래,
  짝:
    row.갈래 === "짝"
      ? row.짝.map((p) => ({ ...p, 입력값: p.입력값 ?? {}, 몫: p.몫 ?? null }))
      : [],
  엑셀조항: row.엑셀조항 ?? [],
});

/** 서버 줄 + 고친 것 → 화면 줄 — 이 층 줄은 고친 값 · 지운 것 뺌 · 위 층에서 옮긴 줄은 이 층 줄로 더함 */
export function mergeRows(rows: LedgerRow[], edits: Edits, scope: HopyoScope): LedgerView[] {
  const mine = rows.filter((r) => r.고침);
  const out: LedgerView[] = [];
  for (const r of mine) {
    if (!(r.열쇠 in edits)) out.push(r);
    else if (edits[r.열쇠]) out.push({ ...r, ...edits[r.열쇠]!, 고친: true });
  }
  for (const [key, entry] of Object.entries(edits)) {
    if (!entry || mine.some((r) => r.열쇠 === key)) continue;
    out.push({
      ...entry,
      열쇠: key,
      누가: null,
      때: null,
      처음파일: null,
      층: scope.layer,
      주인: scope.owner,
      고침: true,
      고친: true,
    });
  }
  return [...out, ...rows.filter((r) => !r.고침)];
}

/** 짝 글 — 「GC000198 × 1 · 몫 0.1 · 소량감률=50」 */
export const pairText = (p: LedgerPair): string =>
  [
    `${p.로직 ?? p.자재 ?? ""} × ${p.배}`,
    p.몫 != null ? `몫 ${p.몫}` : "",
    Object.entries(p.입력값 ?? {})
      .map(([k, v]) => `${k}=${String(v)}`)
      .join(", "),
  ]
    .filter(Boolean)
    .join(" · ");

/** 찾기 · 갈래 거름 */
export const filterRows = (rows: LedgerView[], q: string, kind: string): LedgerView[] => {
  const want = q.trim().toLowerCase();
  return rows.filter(
    (r) =>
      (!kind || r.갈래 === kind) &&
      (!want ||
        `${r.원래.품명} ${r.원래.규격} ${r.짝.map(pairText).join(" ")}`
          .toLowerCase()
          .includes(want)),
  );
};

const why = (error: unknown): string => (error instanceof Error ? error.message : String(error));
const td = (text: string, cls = ""): HTMLElement =>
  el("td", { text, className: cls, attrs: { title: text } });
const note = (text: string): HTMLElement => el("span", { className: "m02-hopyo__note", text });

export interface LedgerOptions {
  scope: HopyoScope;
  /** 이 층 쓰기 권한 — 없으면 보기만 */
  canWrite: boolean;
}

export function buildHopyoLedger(opt: LedgerOptions): HTMLElement {
  const root = el("div", {
    className: "m02-hopyo m02-hopyo-ledger",
    attrs: { "data-hopyo-ledger": "" },
  });
  const k = ledgerKey(opt.scope);
  let edits = loadEdits(k);
  let rows: LedgerRow[] = [];
  const search = el("input", {
    className: "ui-input ui-input--sm m02-hopyo__search",
    attrs: { type: "search", placeholder: "품명 · 규격 · 로직 찾기" },
  }) as HTMLInputElement;
  const kind = el("select", {
    className: "ui-input ui-input--sm",
    children: [
      el("option", { text: "갈래 전체", attrs: { value: "" } }),
      ...KINDS.map((x) => el("option", { text: x, attrs: { value: x } })),
    ],
  }) as HTMLSelectElement;
  const save = createButton({ label: "저장", variant: "filled", size: "sm" });
  const drop = createButton({ label: "고친 것 버림", variant: "ghost", size: "sm" });
  const body = el("tbody");
  const keep = (): void => {
    saveEdits(k, edits);
    paint();
  };
  const edit = (r: LedgerView, next: Partial<LedgerEntry>): void => {
    edits[r.열쇠] = entryOf({ ...entryOf(r), ...next });
    keep();
  };

  function pairCell(r: LedgerView, mine: boolean): HTMLElement {
    const pairs: HTMLElement[] = r.짝.map((p, at) => {
      const parts: HTMLElement[] = [el("span", { text: pairText(p) })];
      if (mine) {
        const times = el("input", {
          className: "ui-input ui-input--sm m02-hopyo__times",
          attrs: { type: "number", step: "any", min: "0", value: String(p.배), title: "배" },
        }) as HTMLInputElement;
        times.addEventListener("change", () =>
          edit(r, { 짝: r.짝.map((x, i) => (i === at ? { ...x, 배: Number(times.value) } : x)) }),
        );
        parts.push(times);
        if (p.로직)
          parts.push(
            createButton({
              label: "옵션",
              variant: "ghost",
              size: "sm",
              onClick: () =>
                void fetchLogicInputs([p.로직!]).then(
                  (got) =>
                    openLaborInput({
                      title: p.로직!,
                      logic: got.로직[0] ?? null,
                      values: p.입력값 as never,
                      memo: null,
                      readOnly: false,
                      done: (res) =>
                        edit(r, {
                          짝: r.짝.map((x, i) => (i === at ? { ...x, 입력값: res.입력값 } : x)),
                        }),
                    }),
                  (error) => showToast(why(error), "error"),
                ),
            }),
            createButton({
              label: "×",
              variant: "ghost",
              size: "sm",
              onClick: () => edit(r, { 짝: r.짝.filter((_, i) => i !== at) }),
            }),
          );
      }
      return el("div", { className: "m02-hopyo__part", children: parts });
    });
    if (mine && r.갈래 === "짝")
      pairs.push(
        createButton({
          label: "로직 더함",
          variant: "ghost",
          size: "sm",
          onClick: () =>
            openLogicPicker((x) =>
              edit(r, { 짝: [...r.짝, { 로직: x.키, 입력값: {}, 배: 1, 몫: null }] }),
            ),
        }),
      );
    return el("td", { className: "m02-hopyo__parts", children: pairs });
  }

  function rowOf(r: LedgerView): HTMLElement {
    const mine = opt.canWrite && r.고침;
    const kindCell = mine
      ? (() => {
          const s = el("select", {
            className: "ui-input ui-input--sm",
            children: KINDS.map((x) => el("option", { text: x, attrs: { value: x } })),
          }) as HTMLSelectElement;
          s.value = r.갈래;
          s.addEventListener("change", () =>
            edit(r, { 갈래: s.value as LedgerEntry["갈래"], 짝: s.value === "짝" ? r.짝 : [] }),
          );
          return el("td", { children: [s] });
        })()
      : td(r.갈래);
    const acts: HTMLElement[] = [];
    if (mine)
      acts.push(
        createButton({
          label: "지우기",
          variant: "danger",
          size: "sm",
          onClick: () => {
            edits[r.열쇠] = null;
            keep();
          },
        }),
      );
    else if (opt.canWrite && !rows.some((x) => x.고침 && x.열쇠 === r.열쇠) && !edits[r.열쇠])
      acts.push(
        createButton({
          label: "내 층으로 고쳐 씀",
          variant: "ghost",
          size: "sm",
          onClick: () => {
            edits[r.열쇠] = entryOf(r);
            keep();
          },
        }),
      );
    const when = [r.누가?.이름, r.때?.replace("T", " ").slice(0, 16), r.처음파일]
      .filter(Boolean)
      .join(" · ");
    return el("tr", {
      className: `m02-hopyo-ledger__row${r.고침 ? "" : " is-upper"}${r.고친 ? " is-edited" : ""}`,
      attrs: { "data-ledger": r.열쇠 },
      children: [
        td(r.원래.품명),
        td(r.원래.규격),
        td(r.원래.단위),
        kindCell,
        pairCell(r, mine),
        td(when),
        td(r.고침 ? "내 층" : (LAYER_TEXT[r.층] ?? r.층)),
        el("td", { className: "m02-hopyo__acts", children: acts }),
      ],
    });
  }

  function paint(): void {
    const all = mergeRows(rows, edits, opt.scope);
    const shown = filterRows(all, search.value, kind.value);
    const n = Object.keys(edits).length;
    save.querySelector(".ui-btn__label")!.textContent = n ? `저장 (${n})` : "저장";
    save.disabled = drop.disabled = !n;
    body.replaceChildren(
      ...(shown.length
        ? shown.map(rowOf)
        : [el("tr", { children: [el("td", { text: "장부 줄 없음", attrs: { colspan: "8" } })] })]),
    );
  }
  search.addEventListener("input", paint);
  kind.addEventListener("change", paint);
  drop.addEventListener("click", () => {
    edits = {};
    keep();
  });
  save.addEventListener("click", async () => {
    save.disabled = true;
    try {
      rows = await saveLedger(opt.scope, edits);
      edits = {};
      showToast("장부 저장", "success");
      keep();
    } catch (error) {
      showToast(`저장 못 함 — ${why(error)}`, "error");
      paint();
    }
  });

  async function load(): Promise<void> {
    const stop = showLoading(root);
    try {
      rows = await readLedger(opt.scope);
    } catch (error) {
      root.replaceChildren(loadingError(why(error), () => void load()));
      return;
    } finally {
      stop();
    }
    root.replaceChildren(
      el("div", {
        className: "m02-hopyo__bar",
        children: [
          el("strong", { text: LEDGER_TITLE }),
          note("엑셀 이름 → 우리 로직 + 옵션 + 배 · 확인하고 만들 때 남음 · 아래 층이 이김"),
          search,
          kind,
          ...(opt.canWrite ? [save, drop] : []),
        ],
      }),
      el("div", {
        className: "ui-general-block__table-wrap ui-general-block__table-wrap--sticky-head",
        children: [
          el("table", {
            className: "ui-general-block__table m02-hopyo__table m02-hopyo-ledger__table",
            children: [
              el("thead", {
                children: [
                  el("tr", {
                    children: [
                      "엑셀 품명",
                      "규격",
                      "단위",
                      "갈래",
                      "우리 로직 · 배 · 몫 · 옵션",
                      "누가 · 때 · 처음 파일",
                      "층",
                      "",
                    ].map((t) => el("th", { text: t })),
                  }),
                ],
              }),
              body,
            ],
          }),
        ],
      }),
    );
    paint();
  }

  void load();
  return root;
}