/* =============================================================================
 * Z01_MasterData_Api_Fetch.ts
 * 마스터 데이터 읽기 — 서버 `Z01_MasterData_Router.py`(랩탑 메인) · 시스템 관리자만
 *
 * 응답 모양은 2026-09-15 브레인이 못박은 약속 그대로. 읽기 전용 — 고치기는 다음 차례.
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import type { MasterColumn } from "./Z01_MasterData_UI_Cells";

export interface MasterTable {
  id: string;
  label: string;
  key: string;
  row_count: number;
}

export interface MasterFile {
  id: string;
  label: string;
  key: string;
  tables: MasterTable[];
}

/** 표가 아닌 낱값(한 값짜리 요율 따위)을 모은 마디 — 여느 표처럼 이름·값 두 칸으로 옴. */
export const VALUES_TABLE_ID = "@values";

export interface MasterGroup {
  /** fingerprint = 폴더 지문(_manifest) — 어느 판으로 셈했는지 못박는 자리(부산물 아님). */
  key: "logic" | "base_value" | "byproduct" | "seed" | "fingerprint";
  label: string;
  files: MasterFile[];
}

export interface MasterRows {
  columns: MasterColumn[];
  rows: Record<string, unknown>[];
  total: number;
}

async function request<T>(path: string): Promise<T> {
  const response = await fetch(`${API_BASE_URL}${path}`, { credentials: "include" });
  const data = (await response.json()) as { detail?: string } & T;
  if (!response.ok) throw new Error(data.detail ?? "Request failed");
  return data;
}

export async function fetchMasterTree(): Promise<MasterGroup[]> {
  return (await request<{ groups: MasterGroup[] }>("/master-data/tree")).groups;
}

export function fetchMasterRows(query: {
  file: string;
  table: string;
  page: number;
  size: number;
  q: string;
}): Promise<MasterRows> {
  const params = new URLSearchParams({
    file: query.file,
    table: query.table,
    page: String(query.page),
    size: String(query.size),
    q: query.q,
  });
  return request<MasterRows>(`/master-data/rows?${params}`);
}