import { cookies } from 'next/headers';
import { redirect } from 'next/navigation';

/**
 * Server-side fetch wrapper with authentication.
 */
export async function fetchServer<T = unknown>(
  endpoint: string,
  options: RequestInit = {}
): Promise<T> {
  const cookieStore = cookies();
  const authToken = cookieStore.get('Authorization')?.value;

  if (!authToken) redirect('/login');

  // Ensure the endpoint doesn't start with a slash if it's going to be appended to a URL that ends with one
  const cleanEndpoint = endpoint.startsWith('/') ? endpoint.substring(1) : endpoint;
  
  try {
    // Make sure we're using a complete URL (protocol + hostname + path)
    const apiUrl = process.env.SERVER_API_URL || 'https://internal-api.inboxi.ng/api';
    
    // Ensure there's only one slash between the base URL and endpoint
    const url = apiUrl.endsWith('/') 
      ? `${apiUrl}${cleanEndpoint}`
      : `${apiUrl}/${cleanEndpoint}`;
      
    console.log(`Making server request to: ${url}`);
    
    const res = await fetch(url, {
      ...options,
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${authToken}`,
        ...options.headers,
      },
      cache: 'no-store',
    });

    if (res.status === 401) redirect('/login');
    if (!res.ok) throw new Error(`Request failed: ${res.statusText}`);

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