import { describe, expect, it } from 'vitest';
import {
  defaultBrowseRoot,
  joinRemotePath,
  parseListDirMessage,
  pathBreadcrumbs,
} from './remoteDirBrowser';

describe('remoteDirBrowser helpers', () => {
  it('parseListDirMessage reads agent JSON', () => {
    const msg = JSON.stringify({
      path: '/home/alice',
      home_dir: '/home/alice',
      platform: 'linux',
      entries: [{ name: 'docs', is_dir: true, size: 0 }],
    });
    const parsed = parseListDirMessage(msg);
    expect(parsed?.path).toBe('/home/alice');
    expect(parsed?.entries).toHaveLength(1);
  });

  it('defaultBrowseRoot returns empty for agent home resolution', () => {
    expect(defaultBrowseRoot('windows')).toBe('');
    expect(defaultBrowseRoot('linux')).toBe('');
  });

  it('joinRemotePath handles unix parent', () => {
    expect(joinRemotePath('/home/alice/docs', '..')).toBe('/home/alice');
    expect(joinRemotePath('/home/alice/docs', 'file.txt')).toBe('/home/alice/docs/file.txt');
  });

  it('joinRemotePath handles windows parent', () => {
    expect(joinRemotePath('C:\\Users\\alice', '..')).toBe('C:\\Users');
    expect(joinRemotePath('C:\\Users\\alice', 'Desktop')).toBe('C:\\Users\\alice\\Desktop');
  });

  it('pathBreadcrumbs splits mixed separators', () => {
    expect(pathBreadcrumbs('/var/log')).toEqual(['var', 'log']);
    expect(pathBreadcrumbs('C:\\Users\\bob')).toEqual(['C:', 'Users', 'bob']);
  });
});