import {
  computeLargeTextLevelFromStorage,
  defaultLargeTextLevelForLanguage,
} from '@/core/settings/app-settings';

describe('defaultLargeTextLevelForLanguage', () => {
  it('uses level 0 for English', () => {
    expect(defaultLargeTextLevelForLanguage('en')).toBe(0);
  });

  it('uses level 1 for Chinese', () => {
    expect(defaultLargeTextLevelForLanguage('zh')).toBe(1);
  });
});

describe('computeLargeTextLevelFromStorage', () => {
  it('prefers valid level key when present', () => {
    expect(computeLargeTextLevelFromStorage('2', 'false', 'en')).toBe(2);
    expect(computeLargeTextLevelFromStorage('0', 'true', 'zh')).toBe(0);
  });

  it('ignores invalid level key and uses legacy', () => {
    expect(computeLargeTextLevelFromStorage('9', 'true', 'en')).toBe(1);
    expect(computeLargeTextLevelFromStorage('', 'false', 'zh')).toBe(0);
  });

  it('uses language default when no usable values', () => {
    expect(computeLargeTextLevelFromStorage(null, null, 'en')).toBe(0);
    expect(computeLargeTextLevelFromStorage('', '', 'zh')).toBe(1);
  });
});