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"]')
  if (await cockpit.isVisible({ timeout: 3000 }).catch(() => false)) {
    await page.locator('[data-testid="cockpit-modal"] .modal-close').click()
    await expect(cockpit).toBeHidden({ timeout: 5000 })
  }
}

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('Knowledge extraction P5.2', () => {
  let userDataDir: string

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

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

  test('E2E-EXT-01: knowledge panel shows extract controls', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '抽取测试书')

    const items = page.locator('.chapter-item')
    if ((await items.count()) === 0) {
      await page.getByRole('button', { name: '+ 新章' }).click()
    } else {
      await items.first().click()
    }

    await page.locator('[data-testid="panel-tab-knowledge"]').click()
    await expect(page.locator('[data-testid="knowledge-panel"]')).toBeVisible()
    await expect(page.locator('[data-testid="knowledge-extract-current"]')).toBeVisible()
    await expect(page.locator('[data-testid="knowledge-batch-high-confidence"]')).toBeVisible()
    await app.close()
  })

  test('E2E-EXT-02: settings show auto-extract toggle', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '设置测试')

    await page.getByRole('button', { name: '设置' }).click()
    await expect(page.locator('[data-testid="settings-knowledge-auto-extract"]')).toBeVisible()
    await expect(page.locator('[data-testid="settings-extract-threshold"]')).toBeVisible()
    await app.close()
  })
})