import path from 'path'
import { mkdtempSync, rmSync, existsSync } from 'fs'
import { join } from 'path'
import { tmpdir } from 'os'
import { test, expect, _electron as electron, type Page } from '@playwright/test'

const ROOT = path.join(import.meta.dirname, '..')

async function launchApp(userDataDir: string) {
  return electron.launch({
    args: [ROOT],
    env: {
      ...process.env,
      BILIN_E2E: '1',
      BILIN_E2E_USER_DATA: userDataDir
    }
  })
}

async function skipOnboarding(page: Page): Promise<void> {
  await page.waitForLoadState('domcontentloaded')
  await expect(page.locator('#app')).toBeVisible({ timeout: 20_000 })
  await expect(page.getByText('欢迎使用笔临')).toBeVisible({ timeout: 15_000 })
  await page.getByRole('button', { name: '跳过' }).click()
  await expect(page.getByText('欢迎使用笔临')).toBeHidden({ timeout: 10_000 })
}

async function dismissCockpitIfOpen(page: Page): Promise<void> {
  const cockpit = page.locator('[data-testid="cockpit-modal"]')
  try {
    await cockpit.waitFor({ state: 'visible', timeout: 15_000 })
    await cockpit.locator('.modal-close').click()
    await expect(cockpit).toBeHidden({ timeout: 5000 })
  } catch {
    /* cockpit did not open */
  }
}

async function createAndOpenBook(page: Page, name: string): Promise<void> {
  await page.getByRole('button', { name: /新建书籍/ }).first().click()
  await page.locator('.dialog-content input').first().fill(name)
  await page.getByRole('button', { name: '创建' }).click()
  await expect(page.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
  await dismissCockpitIfOpen(page)
}

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

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

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

  test('auto-save persists content after restart', async () => {
    const app1 = await launchApp(userDataDir)
    const page1 = await app1.firstWindow()
    await skipOnboarding(page1)
    await createAndOpenBook(page1, '测试书')
    await dismissCockpitIfOpen(page1)
    await page1.getByRole('button', { name: '+ 新章' }).click()

    const editor = page1.locator('.ProseMirror')
    await expect(editor).toBeVisible({ timeout: 10_000 })
    await editor.click()
    await editor.pressSequentially('林远深吸一口气')
    await page1.waitForTimeout(3000)

    await app1.close()

    const app2 = await launchApp(userDataDir)
    const page2 = await app2.firstWindow()
    await expect(page2.getByText('欢迎使用笔临')).toBeHidden({ timeout: 15_000 })
    await page2.getByText('测试书').click()
    await expect(page2.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
    await expect(page2.locator('.ProseMirror')).toContainText('林远深吸一口气', { timeout: 10_000 })
    await app2.close()
  })
})