/* =============================================================================
 * B09_Estimation_UI_Tab_Lists.ts
 * B09 목록표 탭 — 일곱 목록표를 한 자리에 (실무 `…목록표` 시트 · PLAN 12장)
 *
 *   일위대가 · 단가산출근거 · 중기   호표 · 명칭 · 규격 · 단위 · 합계 · 노무비 · 재료비 · 경비 · 비고
 *   재료비 · 노무비 · 경비 · 일식견적  호표 · 명칭 · 규격 · 단위 · 단가 · 비고
 *
 *   - ⚠ 목록표는 **색인**일 뿐 — 계산 쌍이 없음. 서버가 실은 번호·코드·단가를 그대로 늘어놓음.
 *     번호는 내역에 처음 쓰인 차례(서버가 낼 때마다 매김).
 *   - 일위대가·산근·중기 줄을 누르면 그 호표로 들어감.
 * ========================================================================== */

import type { B09Tab, B09TabContext } from "./B09_Estimation_UI_Shell_Types";
import { L, el, hint, numberCell, plainTable, segmented, won } from "./B09_Estimation_UI_Sheet";
import { loadBill, type BillDto, type ResourceGroup } from "./B09_Estimation_UI_Store";

type ListKey = "unit_price" | "price_basis" | ResourceGroup;
let active: ListKey = "unit_price";

const LISTS: Array<[ListKey, Parameters<typeof L>[0]]> = [
  ["unit_price", "B09_Sheet_UnitPriceList"],
  ["price_basis", "B09_Sheet_BasisList"],
  ["machine", "B09_Sheet_MachineList"],
  ["material", "B09_Sheet_List_Material"],
  ["labor", "B09_Sheet_List_Labor"],
  ["expense", "B09_Sheet_List_Expense"],
  ["lumpsum", "B09_Sheet_List_Lumpsum"],
];

interface ListRow {
  label: string;
  name: string;
  spec: string;
  unit: string;
  money: string[];
  note: string;
  open?: [string, string];
}

function rowsOf(bill: BillDto, key: ListKey): ListRow[] {
  if (key === "unit_price") {
    return bill.unit_price_sheet.entries.map((entry) => ({
      label: entry.label,
      name: entry.name,
      spec: entry.spec,
      unit: entry.unit,
      money: [entry.total_krw ?? "", entry.labor_krw, entry.material_krw, entry.expense_krw],
      note: entry.unconfirmed ? `${L("B09_Sheet_Unconfirmed")} ${entry.unconfirmed}` : "",
      open: ["unit_price", entry.code],
    }));
  }
  if (key === "price_basis") {
    return bill.price_basis.entries.map((entry) => ({
      label: `${L("B09_Sheet_Basis_Long")} ${entry.number}${L("B09_Sheet_Basis_Suffix")}`,
      name: entry.name,
      spec: entry.spec,
      unit: entry.unit,
      money: [entry.unit_price_krw ?? "", entry.labor_krw, entry.material_krw, entry.expense_krw],
      note: "",
      open: ["price_basis", entry.code],
    }));
  }
  return bill.lists[key].map((row) => ({
    label: String(row.number),
    name: row.name,
    spec: row.spec,
    unit: row.unit,
    money:
      key === "machine"
        ? [
            row.unit_price_krw ?? "",
            row.unit_labor_krw ?? "",
            row.unit_material_krw ?? "",
            row.unit_expense_krw ?? "",
          ]
        : [row.unit_price_krw ?? ""],
    note: row.note,
    open: key === "machine" ? ["machine", row.code] : undefined,
  }));
}

function draw(ctx: B09TabContext, bill: BillDto): void {
  ctx.body.append(
    segmented(
      LISTS.map(([key, label]) => [key, L(label)]),
      active,
      (key) => {
        active = key as ListKey;
        ctx.body.replaceChildren();
        draw(ctx, bill);
      },
    ),
  );
  const fourWay = active === "unit_price" || active === "price_basis" || active === "machine";
  const money = fourWay
    ? [
        L("B09_Sheet_Col_Total"),
        L("B09_Sheet_Col_Labor"),
        L("B09_Sheet_Col_Material"),
        L("B09_Sheet_Col_Expense"),
      ]
    : [L("B09_Sheet_Col_UnitPrice")];
  const { wrap, tbody } = plainTable([
    L("B09_Sheet_Col_Sheet"),
    L("B09_Sheet_Col_Name"),
    L("B09_Sheet_Col_Spec"),
    L("B09_Sheet_Col_Unit"),
    ...money,
    L("B09_Sheet_Col_Note"),
  ]);
  const rows = rowsOf(bill, active);
  for (const row of rows) {
    const tr = el("tr");
    tr.append(
      el("td", "", row.label),
      el("td", "", row.name),
      el("td", "", row.spec),
      el("td", "", row.unit),
    );
    for (const value of row.money) tr.append(numberCell(won(value)));
    tr.append(el("td", "b09s-note", row.note));
    if (row.open) {
      const [tab, code] = row.open;
      tr.classList.add("is-clickable");
      tr.title = L("B09_Sheet_Drill");
      tr.addEventListener("click", () => ctx.open(tab, code));
    }
    tbody.append(tr);
  }
  ctx.body.append(wrap);
  if (rows.length === 0) ctx.body.append(hint(L("B09_Sheet_EmptyGroup")));
}

export const listsTab: B09Tab = {
  key: "lists",
  label: () => L("B09_Sheet_Tab_Lists"),
  render(ctx) {
    if (!ctx.projectId) {
      ctx.body.append(hint(L("B09_Sheet_NoProject")));
      return;
    }
    ctx.body.append(hint(L("B09_Sheet_Loading")));
    loadBill(ctx.projectId)
      .then((bill) => {
        ctx.body.replaceChildren();
        draw(ctx, bill);
      })
      .catch((error: Error) => {
        ctx.body.replaceChildren(hint(`${L("B09_Sheet_LoadFailed")} ${error.message}`, true));
      });
  },
};