import { describe, expect, it } from 'vitest';
import { canLeaveCurrentPage, getSettingsReturnPath, getSettingsReturnState } from '@/lib/settings-navigation';

describe('global settings return navigation', () => {
  it.each(['/module-select', '/chat?session=story', '/cloud-agents?view=channels#account', '/image-canvas?workspace=canvas'])(
    'returns to the full local origin %s', path => {
      const url = new URL(path, 'https://makelore.local');
      const state = getSettingsReturnState({ pathname: url.pathname, search: url.search, hash: url.hash });
      expect(getSettingsReturnPath(state)).toBe(path);
    });

  it.each([null, {}, { settingsReturnTo: '/settings' }, { settingsReturnTo: '//outside.example' },
    { settingsReturnTo: 'https://outside.example/chat' }, { settingsReturnTo: '/unknown' }, { settingsReturnTo: '/\\outside.example' }])(
    'uses the module homepage for an absent or invalid origin', state => {
      expect(getSettingsReturnPath(state)).toBe('/module-select');
    });

  it('keeps the origin when settings is opened again from its own account menu', () => {
    expect(getSettingsReturnState({ pathname: '/settings', state: { settingsReturnTo: '/cloud-agents?view=mine' } }))
      .toEqual({ settingsReturnTo: '/cloud-agents?view=mine' });
  });

  it('honors the page leave guard without discarding or saving input', () => {
    const protect = (event: Event) => event.preventDefault();
    window.addEventListener('beforeunload', protect);
    try { expect(canLeaveCurrentPage()).toBe(false); }
    finally { window.removeEventListener('beforeunload', protect); }
    expect(canLeaveCurrentPage()).toBe(true);
  });
});