import { describe, it, expect } from 'vitest'
import { folderFromTitle } from '../public/title-util.js'

describe('folderFromTitle', () => {
  it('extracts the folder from user@host:~/path', () => {
    expect(folderFromTitle('yiukai@Mac:~/Documents/git/web-terminal')).toBe('web-terminal')
  })

  it('keeps ~ for the home directory', () => {
    expect(folderFromTitle('yiukai@Yiukais-MacBook-Pro:~')).toBe('~')
  })

  it('takes the basename of an absolute path', () => {
    expect(folderFromTitle('user@host:/Users/yiukai/web')).toBe('web')
  })

  it('strips a trailing slash', () => {
    expect(folderFromTitle('user@host:~/web/')).toBe('web')
  })

  it('handles a title with no user@host: prefix', () => {
    expect(folderFromTitle('web-terminal')).toBe('web-terminal')
  })

  it('returns the last path segment when the whole title is a path', () => {
    expect(folderFromTitle('/var/log/nginx')).toBe('nginx')
  })

  it('returns null for an empty/whitespace title', () => {
    expect(folderFromTitle('   ')).toBeNull()
    expect(folderFromTitle('')).toBeNull()
  })
})