/**
 * Single source for API and WebSocket base URLs.
 * Uses VITE_API_URL so one env var works for both REST and WebSocket.
 *
 * When VITE_API_URL is defined (even as empty string), use it as-is.
 * Empty string = same origin (for HF Spaces / single-container deploy).
 * Only fall back to localhost:8000 when the var is completely undefined.
 */
const envVal = import.meta.env.VITE_API_URL;
const API_BASE_URL =
  typeof envVal === 'string'
    ? envVal.trim().replace(/\/+$/, '')
    : 'http://localhost:8000';

/** WebSocket base URL derived from API URL (http -> ws, same host/port) */
const WS_BASE_URL = API_BASE_URL
  ? API_BASE_URL.replace(/^http/, 'ws')
  : `${window.location.protocol === 'https:' ? 'wss:' : 'ws:'}//${window.location.host}`;

export { API_BASE_URL, WS_BASE_URL };