/* =============================================================================
 * M01_MasterData_UI_Matset_Api.ts
 * 자재 조합(`자재조합.json` · 키 UM) 서버 길 — 목록 · 하나 · 새로 · 고치기 · 지우기
 * 계약: `resources/master_data/_화면_계약.md` 9장 「자재 조합」
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import { ApiError } from "./M01_MasterData_UI_Logic_Api";

/** 담은 자재 한 줄 — 고를 때의 사본(수량 · 단가는 안 둠) */
export interface MatItem {
  코드: string;
  이름: string;
  규격: string;
  단위: string;
}
export interface Matset {
  키: string;
  이름: string;
  담은자재: MatItem[];
  /** 본뜬 원본 자재 조합 키 — 비면 원본 */
  본뜬키: string | null;
  소유: string | null;
  비고: string | null;
}
export interface MatsetSummary extends Omit<Matset, "담은자재"> {
  count: number;
}
export interface MatsetOne {
  file: string;
  version: string;
  matset: Matset;
}

async function request<T>(path: string, body?: unknown): Promise<T> {
  const response = await fetch(`${API_BASE_URL}/m01${path}`, {
    method: body === undefined ? "GET" : "POST",
    credentials: "include",
    headers: { "Content-Type": "application/json" },
    body: body === undefined ? undefined : JSON.stringify(body),
  });
  const data = (await response.json().catch(() => ({}))) as { detail?: unknown } & T;
  if (!response.ok) throw new ApiError(response.status, data.detail ?? response.statusText);
  return data;
}

export const fetchMatsets = (): Promise<MatsetSummary[]> =>
  request<{ matsets: MatsetSummary[] }>("/matsets").then((d) => d.matsets);

export const fetchMatset = (key: string): Promise<MatsetOne> =>
  request(`/matset?key=${encodeURIComponent(key)}`);

export const newMatset = (matset: Matset): Promise<{ key: string; version: string }> =>
  request("/matset/new", { matset });

export const editMatset = (key: string, version: string, matset: Matset): Promise<unknown> =>
  request("/matset/edit", { key, version, matset });

export const deleteMatset = (key: string, version: string): Promise<unknown> =>
  request("/matset/delete", { key, version });