declare global {
  interface Window {
    __APP_CONFIG__?: {
      API_BASE_URL?: string;
    };
  }
}

export function getApiBaseUrl(): string {
  const runtimeValue = window.__APP_CONFIG__?.API_BASE_URL;
  if (runtimeValue && runtimeValue.length > 0) {
    return runtimeValue;
  }

  return import.meta.env.VITE_API_BASE_URL ?? 'http://localhost:8080';
}

export async function getJson<T>(path: string): Promise<T> {
  const response = await fetch(`${getApiBaseUrl()}${path}`);
  if (!response.ok) {
    throw new Error(`GET ${path} failed with status ${response.status}`);
  }

  return (await response.json()) as T;
}