/**
 * Client-side API utilities with authentication handling
 */

const getAuthToken = (): string | null => {
  const token = document.cookie
    .split('; ')
    .find(row => row.startsWith('Authorization='))
    ?.split('=')[1];

  return token || null; // Return null instead of throwing an error
};

export const fetchClient = async <T = unknown>(
  endpoint: string,
  options: RequestInit = {}
): Promise<T> => {
  try {
    const authToken = getAuthToken();
    if (!authToken) {
      console.warn("No authentication token found. Redirecting to login...");
      window.location.href = "/login";
      return Promise.reject("Unauthorized");
    }

    const res = await fetch(`${process.env.NEXT_PUBLIC_API_URL}${endpoint}`, {
      ...options,
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${authToken}`,
        ...options.headers,
      },
      credentials: 'include',
    });

    if (!res.ok) {
      const errorData = await res.json();
      throw new Error(errorData.message || `Request failed: ${res.statusText}`);
    }

    return res.json();
  } catch (error) {
    console.error(`API request to ${endpoint} failed:`, error);
    throw error;
  }
};