const API = "http://localhost:3001/categories";

export interface Category {
  id: string;
  name: string;
  slug: string;
  parentId?: string | null;
  children?: Category[];
}

export async function getCategoriesTree(): Promise<Category[]> {
  const res = await fetch(`${API}/`);
  const data = await res.json();
  return Array.isArray(data) ? data : data?.data ?? [];
}

export async function getCategoriesFlat(): Promise<Category[]> {
  const res = await fetch(API);
  const data = await res.json();
  return Array.isArray(data) ? data : [];
}

export async function createCategory(payload: Partial<Category>) {
  return fetch(API, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(payload),
  });
}

export async function updateCategory(id: string, payload: Partial<Category>) {
  return fetch(`${API}/${id}`, {
    method: "PATCH",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(payload),
  });
}

export async function deleteCategory(id: string) {
  return fetch(`${API}/${id}`, { method: "DELETE" });
}


export async function getTree(): Promise<Category[]> {
    const res = await fetch(`${API}/`);
    const data = await res.json();
    return Array.isArray(data) ? data : data?.data ?? [];
  }
  
  export async function getFlat(): Promise<Category[]> {
    const res = await fetch(API);
    const data = await res.json();
    return Array.isArray(data) ? data : [];
  }