/* =============================================================================
 * B09_Estimation_UI_Store.ts
 * B09 내역서·일위대가·단가산출근거 탭이 **한 벌로** 쓰는 서버 자료 (PLAN 12장)
 *
 *   - 설계내역서 응답 한 벌에 호표 목록(`unit_price_sheet`)·단산 목록(`price_basis`)이 함께 옴 —
 *     세 탭이 같은 응답을 봄(번호가 탭끼리 갈리지 않게). 번호는 서버가 낼 때마다 매김(저장 안 함).
 *   - 캐시는 메모리 한 벌(프로젝트별) — [다시 불러오기] 가 비움. 값을 저장하지 않음(보기 전용 1차).
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import type { ProvenancePayload } from "@ui/ui_template_provenance";

export interface BillNoteDto {
  column: string;
  text: string;
}

export interface BillRowDto {
  item_no: string;
  level: number;
  code: string | null;
  name: string;
  spec: string;
  unit: string;
  quantity: string | null;
  quantity_shown: string | null;
  quantity_digits: number | null;
  unit_price_krw: string | null;
  amount_krw: string | null;
  material_krw: string;
  labor_krw: string;
  expense_krw: string;
  unit_material_krw: string | null;
  unit_labor_krw: string | null;
  unit_expense_krw: string | null;
  price_code: string;
  unconfirmed: number;
  price_basis_label: string;
  is_group: boolean;
  in_bill: boolean;
  note: string;
  notes: BillNoteDto[];
}

export interface SheetEntryDto {
  number: number;
  label: string;
  code: string;
  name: string;
  spec: string;
  unit: string;
  material_krw: string;
  labor_krw: string;
  expense_krw: string;
  total_krw?: string;
  unit_price_krw?: string;
  source?: string;
  unconfirmed?: number;
  ref_code?: string;
  unit_price_codes?: string[];
}

export interface MissingDto {
  name: string;
  unit?: string;
  quantity?: string;
  reason: string;
  code?: string;
  blocked_kind?: string;
}

/** 집계표·목록표 한 줄 — 서버 `resource_summary`·`bill_lists` 그대로. */
export interface ResourceRowDto {
  number: number;
  code: string;
  name: string;
  spec: string;
  unit: string;
  quantity?: string;
  unit_price_krw: string | null;
  amount_krw?: string | null;
  labor_krw?: string;
  material_krw?: string;
  expense_krw?: string;
  unit_labor_krw?: string;
  unit_material_krw?: string;
  unit_expense_krw?: string;
  note: string;
}

export type ResourceGroup = "labor" | "material" | "expense" | "machine" | "lumpsum";

export interface MaterialSheetRowDto {
  name: string;
  spec: string;
  unit: string;
  total_amount: string;
  unit_price_krw: string | null;
  amount_krw: string | null;
  note: string;
}

export interface MaterialSheetDto {
  contractor: MaterialSheetRowDto[];
  owner: MaterialSheetRowDto[];
  unknown: MaterialSheetRowDto[];
  contractor_total_krw: string;
  owner_total_krw: string;
  notes: string[];
}

export interface BillDto {
  /** 근거 사전 — 개발환경에서만 옴. */
  provenance?: ProvenancePayload;
  resources: {
    groups: Record<ResourceGroup, ResourceRowDto[]>;
    missing: string[];
    note: string;
  };
  lists: Record<ResourceGroup, ResourceRowDto[]>;
  rows: BillRowDto[];
  excluded: BillRowDto[];
  summary: {
    body_total_krw: string;
    detail_rows: number;
    missing: MissingDto[];
    unconfirmed_count: number;
    notes: string[];
    material_sheet: MaterialSheetDto | null;
  };
  price_basis: { entries: SheetEntryDto[] };
  unit_price_sheet: { entries: SheetEntryDto[] };
}

export interface DetailRowDto {
  ref_code?: string;
  code?: string;
  name: string;
  spec: string;
  unit: string;
  kind?: string;
  source_label?: string;
  source?: string;
  drillable: boolean;
  quantity: string;
  unit_material?: string;
  unit_labor?: string;
  unit_expense?: string;
  unit_total?: string;
  material: string;
  labor: string;
  expense: string;
  total: string;
  note: string;
}

export interface DetailDto {
  code: string;
  name: string;
  spec: string;
  unit: string;
  kind: string;
  material: string;
  labor: string;
  expense: string;
  total: string;
  rows: DetailRowDto[];
  unattached_note: string;
  known_gap_note: string;
}

const bills = new Map<string, Promise<BillDto>>();

async function getJson<T>(path: string): Promise<T> {
  const response = await fetch(`${API_BASE_URL}${path}`, { credentials: "include" });
  const body = await response.json().catch(() => ({}));
  if (!response.ok) {
    throw new Error(String((body as { message?: string }).message || response.status));
  }
  return body as T;
}

/** 산출 조건을 저장한 뒤 — 단가가 다시 서므로 다음에 고르는 탭이 새로 받게 비움. */
export function forgetBill(projectId: string): void {
  bills.delete(projectId);
}

/** 설계내역서 한 벌 — 세 탭이 같은 응답을 봄. `force` 면 다시 받음. */
export function loadBill(projectId: string, force = false): Promise<BillDto> {
  if (force || !bills.has(projectId)) {
    const request = getJson<BillDto>(`/projects/${encodeURIComponent(projectId)}/estimation/bill`);
    request.catch(() => bills.delete(projectId));
    bills.set(projectId, request);
  }
  return bills.get(projectId) as Promise<BillDto>;
}

export interface PriceSlotDto {
  name: string;
  price_krw: string | null;
  source_note: string;
  adopted: boolean;
}

export interface PriceCompareDto {
  material_comparison: {
    slot_names: string[];
    rows: Array<{
      code: string;
      name: string;
      spec: string;
      unit: string;
      slots: PriceSlotDto[];
      min_slot: number | null;
      adopted_slot: number;
      adopted_price_krw: string | null;
      note: string;
    }>;
    notes: string[];
  };
}

/** 자재단가대비표 — 슬롯 여섯 · 채택 · 최소단가(서버 `material_price_comparison`). */
export function loadPriceCompare(projectId: string): Promise<PriceCompareDto> {
  return getJson<PriceCompareDto>(
    `/projects/${encodeURIComponent(projectId)}/estimation/price-sources`,
  );
}

/** 호표 본표 — 일위대가(B)·시간당 중기(X)는 `unit-prices`, 단가산출(D)은 `price-basis`. */
export function loadDetail(projectId: string, code: string): Promise<DetailDto> {
  const kind = code.startsWith("D-") ? "price-basis" : "unit-prices";
  return getJson<DetailDto>(
    `/projects/${encodeURIComponent(projectId)}/estimation/${kind}/${encodeURIComponent(code)}`,
  );
}