/* =============================================================================
 * B09_Estimation_UI_MachineExpense.ts
 * 각종 중기경비계산서 — 기종마다 한 장(별표2 (5)(가) 아홉째) · 중기 탭 아래에 붙음
 *
 *   - 옛 `B09_Estimation_UI_BaseData.ts` 의 중기경비계산서를 그대로 옮김(PLAN 12장 옛 탭 옮기기).
 *   - ⚠ 목록표가 「얼마」라면 이 장은 **왜 그 값인가** — 계산 과정을 감추지 않음.
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import { el } from "./B09_Estimation_UI_Sheet";
import { head, infoTable, money, note } from "./B09_Estimation_UI_Table";

export interface MachineExpenseDto {
  summary: string;
  notes: string[];
  sheets: Array<{
    machine_code: string;
    name: string;
    spec: string;
    price_thousand_krw: string | null;
    economic_life_hours: number | null;
    annual_standard_hours: number | null;
    depreciation_coefficient: number | null;
    maintenance_coefficient: number | null;
    management_coefficient: number | null;
    loss_coefficient: number | null;
    loss_krw_per_hour: string | null;
    fuel_liters_per_hour: string | null;
    fuel_price_per_liter: string | null;
    fuel_scope: string;
    misc_material_percent: string | null;
    operator_code: string;
    operator_daily_wage: string | null;
    operator_krw_per_hour: string | null;
    material_krw: string | null;
    labor_krw: string | null;
    expense_krw: string | null;
    total_krw: string | null;
    variant: string;
    attachment: boolean;
    attachment_note: string;
    gaps: string[];
  }>;
}

export async function fetchMachineExpense(projectId: string): Promise<MachineExpenseDto> {
  const response = await fetch(
    `${API_BASE_URL}/projects/${encodeURIComponent(projectId)}/estimation/machine-expense`,
    { credentials: "include" },
  );
  if (!response.ok) throw new Error(`machine-expense ${response.status}`);
  return (await response.json()) as MachineExpenseDto;
}

/** 기종 한 장 — 손료·운전경비·시간당 사용료를 차례로. */
function machineExpenseSheet(sheet: MachineExpenseDto["sheets"][number]): HTMLElement {
  const box = el("div", "b09s-group");
  box.append(
    el(
      "div",
      "b09s-head",
      `${sheet.machine_code} ${sheet.name} ${sheet.spec}`.trim() +
        (sheet.variant ? ` — ${sheet.variant}` : ""),
    ),
  );
  const coefficient = (value: number | null) => (value === null ? "—" : String(value));
  box.append(
    infoTable(
      ["구 분", "내 용", "값"],
      [
        ["① 손료", "취득가격(천원)", money(sheet.price_thousand_krw)],
        [
          "",
          "내용시간 / 연간표준가동시간",
          `${coefficient(sheet.economic_life_hours)} / ${coefficient(sheet.annual_standard_hours)}`,
        ],
        [
          "",
          "상각비·정비비·관리비 계수 (10⁻⁷)",
          `${coefficient(sheet.depreciation_coefficient)} + ${coefficient(sheet.maintenance_coefficient)} + ${coefficient(sheet.management_coefficient)} = ${coefficient(sheet.loss_coefficient)}`,
        ],
        ["", "시간당 손료(원)", money(sheet.loss_krw_per_hour)],
        [
          "② 운전경비",
          `주연료(L/hr) × 유가(${sheet.fuel_scope})`,
          `${sheet.fuel_liters_per_hour ?? "—"} × ${money(sheet.fuel_price_per_liter)}`,
        ],
        ["", "잡재료(주연료의 %)", sheet.misc_material_percent ?? "—"],
        [
          "",
          `조종원(${sheet.operator_code || "—"}) 일당 → 시간당`,
          `${money(sheet.operator_daily_wage)} → ${money(sheet.operator_krw_per_hour)}`,
        ],
        [
          "③ 시간당 사용료",
          "재료비 / 노무비 / 경비",
          `${money(sheet.material_krw)} / ${money(sheet.labor_krw)} / ${money(sheet.expense_krw)}`,
        ],
        ["", "합 계", money(sheet.total_krw)],
      ],
      [0, 1],
    ),
  );
  if (sheet.variant) {
    box.append(
      note(
        "같은 기종이라도 조합 사용이면 잡재료가 16% 로 줄어 재료비가 달라집니다 —" +
          " 그래서 층이 따로 섭니다(건설품셈 제8장 [주]⑤).",
      ),
    );
  }
  if (sheet.attachment_note) box.append(note(sheet.attachment_note));
  for (const gap of sheet.gaps) box.append(note(`⚠ ${gap}`));
  return box;
}

export function drawMachineExpense(body: HTMLElement, data: MachineExpenseDto): void {
  body.append(head(`각종 중기경비계산서 (${data.sheets.length})`));
  body.append(note(data.summary));
  for (const line of data.notes) body.append(note(line));
  for (const sheet of data.sheets) body.append(machineExpenseSheet(sheet));
}