import { mkdtempSync, readFileSync, rmSync } from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'

import { afterEach, describe, expect, it } from 'vitest'

import { writeActiveSessionFile } from '../app/useSessionLifecycle.js'

describe('writeActiveSessionFile', () => {
  let dir = ''

  afterEach(() => {
    if (dir) {
      rmSync(dir, { force: true, recursive: true })
      dir = ''
    }
  })

  it('writes the actual resumed session id for the shell exit summary', () => {
    dir = mkdtempSync(join(tmpdir(), 'hermes-tui-active-'))
    const path = join(dir, 'active.json')

    writeActiveSessionFile('actual_session', path)

    expect(JSON.parse(readFileSync(path, 'utf8'))).toEqual({ session_id: 'actual_session' })
  })
})