import { afterEach, describe, expect, it, vi } from 'vitest';
import { getApiBaseUrl } from './client';

describe('getApiBaseUrl', () => {
  afterEach(() => {
    delete window.__APP_CONFIG__;
    vi.unstubAllEnvs();
  });

  it('uses runtime-config API base URL when present', () => {
    window.__APP_CONFIG__ = { API_BASE_URL: 'http://runtime.example' };
    vi.stubEnv('VITE_API_BASE_URL', 'http://env.example');

    expect(getApiBaseUrl()).toBe('http://runtime.example');
  });

  it('falls back to VITE_API_BASE_URL when runtime-config is missing', () => {
    vi.stubEnv('VITE_API_BASE_URL', 'http://env.example');

    expect(getApiBaseUrl()).toBe('http://env.example');
  });

  it('falls back to localhost default when both runtime and env are missing', () => {
    expect(getApiBaseUrl()).toBe('http://localhost:8080');
  });
});