/**
 * Fetch wrapper with automatic timeout protection
 * Prevents thread exhaustion from slow external services
 */

/**
 * Wrapper for fetch with automatic timeout using AbortController
 *
 * @param url - The URL to fetch
 * @param options - Standard fetch options
 * @param timeoutMs - Timeout in milliseconds (default: 5000)
 * @returns Response from fetch
 * @throws Error if request times out or fails
 */
export async function fetchWithTimeout(
  url: string,
  options: RequestInit = {},
  timeoutMs = 5000
): Promise<Response> {
  const controller = new AbortController();
  const timer = setTimeout(() => controller.abort(), timeoutMs);

  try {
    const response = await fetch(url, {
      ...options,
      signal: controller.signal,
    });
    clearTimeout(timer);
    return response;
  } catch (error) {
    clearTimeout(timer);
    if (error instanceof Error && error.name === 'AbortError') {
      throw new Error(`Request timeout after ${timeoutMs}ms: ${url}`);
    }
    throw error;
  }
}