import { beforeEach, describe, expect, it, vi } from 'vitest';
import { getPrefs, setPrefs } from '../prefs';

describe('prefs', () => {
  beforeEach(() => {
    const store: Record<string, string> = {};
    vi.stubGlobal('localStorage', {
      getItem(key: string) {
        return store[key] ?? null;
      },
      setItem(key: string, value: string) {
        store[key] = value;
      },
    });
  });

  it('returns defaults when localStorage empty', () => {
    expect(getPrefs()).toEqual({
      storyOpenMode: 'auto',
      actionDetailMode: 'inline',
      collapsedActionGroups: {},
      showEventLog: true,
    });
  });

  it('round-trips updated prefs', () => {
    setPrefs({ storyOpenMode: 'manual', actionDetailMode: 'hover' });
    expect(getPrefs().storyOpenMode).toBe('manual');
  });
});

describe('expanded prefs', () => {
  it('defaults collapsedActionGroups and showEventLog', () => {
    const prefs = getPrefs();
    expect(prefs.collapsedActionGroups).toEqual({});
    expect(prefs.showEventLog).toBe(true);
  });
});