"use client";

import { clientAuthFetch } from "@/app/utils/clientAuthFetch";
import { NEXT_PUBLIC_API_URL } from "@/config/api";

const base = NEXT_PUBLIC_API_URL;

export type ItemDefaultShelfLifeRow = {
  id: number;
  itemCode: string;
  itemName?: string | null;
  defaultDays?: number | null;
  minus18Days?: number | null;
  useMinus18: boolean;
  openedDays?: number | null;
  storageC?: string | null;
  remarks?: string | null;
  effectiveDays?: number | null;
};

export type ItemDefaultShelfLifeInput = {
  itemCode: string;
  defaultDays?: number | null;
  minus18Days?: number | null;
  useMinus18: boolean;
  openedDays?: number | null;
  storageC?: string | null;
  remarks?: string | null;
};

async function parseJson<T>(res: Response): Promise<T> {
  if (!res.ok) {
    throw new Error(await readError(res));
  }
  return res.json() as Promise<T>;
}

async function readError(res: Response): Promise<string> {
  const text = await res.text().catch(() => "");
  if (!text) return `HTTP ${res.status}`;
  try {
    const json = JSON.parse(text) as { message?: string; error?: string };
    return json.message || json.error || text;
  } catch {
    return text;
  }
}

export async function fetchItemDefaultShelfLives(
  q?: string,
): Promise<ItemDefaultShelfLifeRow[]> {
  const url = new URL(`${base}/itemDefaultShelfLives`);
  if (q?.trim()) url.searchParams.set("q", q.trim());
  const res = await clientAuthFetch(url.toString(), { method: "GET" });
  return parseJson<ItemDefaultShelfLifeRow[]>(res);
}

export async function createItemDefaultShelfLife(
  data: ItemDefaultShelfLifeInput,
): Promise<ItemDefaultShelfLifeRow> {
  const res = await clientAuthFetch(`${base}/itemDefaultShelfLives`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(data),
  });
  return parseJson<ItemDefaultShelfLifeRow>(res);
}

export async function updateItemDefaultShelfLife(
  id: number,
  data: ItemDefaultShelfLifeInput,
): Promise<ItemDefaultShelfLifeRow> {
  const res = await clientAuthFetch(`${base}/itemDefaultShelfLives/${id}`, {
    method: "PUT",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(data),
  });
  return parseJson<ItemDefaultShelfLifeRow>(res);
}

export async function deleteItemDefaultShelfLife(
  id: number,
): Promise<ItemDefaultShelfLifeRow[]> {
  const res = await clientAuthFetch(`${base}/itemDefaultShelfLives/${id}`, {
    method: "DELETE",
  });
  return parseJson<ItemDefaultShelfLifeRow[]>(res);
}