import { mkdtempSync, rmSync, existsSync } from 'fs'
import { join } from 'path'
import { tmpdir } from 'os'
import { test, expect } from '@playwright/test'
import {
  launchApp,
  skipOnboarding,
  createBookAndOpenEditor,
  ensureChapterEditor,
  dismissCockpitIfOpen
} from './helpers'

test.describe('Persistent undo', () => {
  let userDataDir: string

  test.beforeEach(() => {
    userDataDir = mkdtempSync(join(tmpdir(), 'bilin-e2e-undo-'))
  })

  test.afterEach(() => {
    if (userDataDir && existsSync(userDataDir)) {
      try {
        rmSync(userDataDir, { recursive: true, force: true, maxRetries: 3, retryDelay: 200 })
      } catch {
        /* ignore */
      }
    }
  })

  test('E2E-UNDO-01: ctrl+z after reopen restores previous content', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createBookAndOpenEditor(page, '撤销测试书')
    await dismissCockpitIfOpen(page)
    await ensureChapterEditor(page)

    const editor = page.locator('.ProseMirror')
    await editor.click()
    await editor.pressSequentially('持久化撤销测试')
    await page.keyboard.press('Control+S')
    await page.waitForTimeout(2000)

    await page.getByRole('button', { name: /笔临/ }).click()
    await expect(page.locator('#home-page')).toBeVisible({ timeout: 15_000 })

    await page.locator('.book-name', { hasText: '撤销测试书' }).click()
    await expect(page.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
    await dismissCockpitIfOpen(page)
    await ensureChapterEditor(page)
    await expect(editor).toContainText('持久化撤销测试')

    await editor.click()
    await page.keyboard.press('Control+Z')
    await expect(editor).not.toContainText('持久化撤销测试', { timeout: 10_000 })

    await app.close()
  })
})