import {
  appVariant,
  config,
  requirePublicEnv,
  shouldShowAboutBackendUrl,
  type AppVariant,
} from '@/core/config';

describe('requirePublicEnv', () => {
  it('throws when variable is missing or blank', () => {
    const key = 'EXPO_PUBLIC_API_URL';
    const previous = process.env[key];
    try {
      delete process.env[key];
      expect(() => requirePublicEnv(key)).toThrow(/Missing EXPO_PUBLIC_API_URL/);
      process.env[key] = '  ';
      expect(() => requirePublicEnv(key)).toThrow(/Missing EXPO_PUBLIC_API_URL/);
    } finally {
      if (previous === undefined) {
        process.env[key] = 'http://127.0.0.1:8000';
      } else {
        process.env[key] = previous;
      }
    }
  });
});

describe('config backend URLs', () => {
  it('loads API and WS from EXPO_PUBLIC_* (jest.setup defaults)', () => {
    expect(config.apiBaseUrl).toBe('http://127.0.0.1:8000');
    expect(config.wsBaseUrl).toBe('ws://127.0.0.1:8000');
  });
});

describe('shouldShowAboutBackendUrl', () => {
  it('shows backend URL for development and staging', () => {
    expect(shouldShowAboutBackendUrl('development')).toBe(true);
    expect(shouldShowAboutBackendUrl('staging')).toBe(true);
  });

  it('hides backend URL for production when not in __DEV__', () => {
    if (__DEV__) {
      expect(shouldShowAboutBackendUrl('production')).toBe(true);
    } else {
      expect(shouldShowAboutBackendUrl('production')).toBe(false);
    }
  });

  it('matches config.showAboutBackendUrl for current build', () => {
    expect(config.showAboutBackendUrl).toBe(
      shouldShowAboutBackendUrl(appVariant as AppVariant),
    );
  });
});