/**
 * API client utilities for making authenticated requests
 */

export async function fetchWithAuth(url: string, options: RequestInit = {}) {
  const token = typeof window !== 'undefined' ? localStorage.getItem('token') : null;

  const headers = new Headers(options.headers);
  if (token) {
    headers.set('Authorization', `Bearer ${token}`);
  }
  if (!headers.has('Content-Type') && options.body) {
    headers.set('Content-Type', 'application/json');
  }

  return fetch(url, {
    ...options,
    headers,
  });
}

export async function apiGet<T>(url: string): Promise<T> {
  const response = await fetchWithAuth(url);
  const data = await response.json();

  if (!response.ok) {
    throw new Error(data.error || 'Request failed');
  }

  return data;
}

export async function apiPost<T>(url: string, body?: unknown): Promise<T> {
  const response = await fetchWithAuth(url, {
    method: 'POST',
    body: body ? JSON.stringify(body) : undefined,
  });
  const data = await response.json();

  if (!response.ok) {
    throw new Error(data.error || 'Request failed');
  }

  return data;
}