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 ensureChapterEditor(page: Page): Promise<void> {
  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 expect(page.locator('.ProseMirror')).toBeVisible({ timeout: 10_000 })
}

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('Cockpit & Knowledge P5', () => {
  let userDataDir: string

  test.beforeEach(() => {
    userDataDir = mkdtempSync(join(tmpdir(), 'bilin-e2e-p5-'))
  })

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

  test('E2E-COCK-01: cockpit modal shows stats', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '驾驶舱书')
    await page.locator('[data-testid="topbar-cockpit"]').click()
    await expect(page.locator('[data-testid="cockpit-modal"]')).toBeVisible()
    await expect(page.locator('[data-testid="cockpit-total-words"]')).toBeVisible()
    await app.close()
  })

  test('E2E-COCK-02: first open shows cockpit once', async () => {
    const app1 = await launchApp(userDataDir)
    const page1 = await app1.firstWindow()
    await skipOnboarding(page1)
    await page1.getByRole('button', { name: /新建书籍/ }).first().click()
    await page1.locator('.dialog-content input').first().fill('首次驾驶舱')
    await page1.getByRole('button', { name: '创建' }).click()
    await expect(page1.locator('[data-testid="cockpit-modal"]')).toBeVisible({ timeout: 15_000 })
    await page1.locator('[data-testid="cockpit-modal"] .modal-close').click()
    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('首次驾驶舱').click()
    await expect(page2.locator('#editor-layout')).toBeVisible({ timeout: 15_000 })
    await expect(page2.locator('[data-testid="cockpit-modal"]')).toBeHidden({ timeout: 3000 })
    await app2.close()
  })

  test('E2E-PUB-01: publish ready increases stock count', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '发布书')
    await ensureChapterEditor(page)
    const chapterItem = page.locator('.chapter-item').first()
    await expect(chapterItem).toBeVisible()
    const chapterId = await chapterItem.getAttribute('data-testid')
    const id = chapterId?.replace('chapter-item-', '') ?? ''
    await page.locator(`[data-testid="chapter-publish-${id}"]`).click()
    await page.locator('[data-testid="topbar-cockpit"]').click()
    await expect(page.locator('[data-testid="cockpit-stock-count"]')).toContainText('1')
    await app.close()
  })

  test('E2E-KNOW-01: create approve knowledge entry', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '知识库书')
    await page.locator('[data-testid="panel-tab-knowledge"]').click()
    await page.locator('[data-testid="knowledge-new"]').click()
    await page.locator('[data-testid="knowledge-title-input"]').fill('测灵石异常')
    await page.locator('[data-testid="knowledge-save"]').click()
    await page.locator('[data-testid="knowledge-tab-pending"]').click()
    await expect(page.locator('.kb-item')).toContainText('测灵石异常')
    const approveBtn = page.locator('[data-testid^="knowledge-approve-"]').first()
    await approveBtn.click()
    await page.locator('[data-testid="knowledge-tab-all"]').click()
    await expect(page.locator('.kb-item')).toContainText('测灵石异常')
    await app.close()
  })

  test('E2E-BRIDGE-01: new chapter triggers bridge modal', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '衔接书')
    await ensureChapterEditor(page)
    const editor = page.locator('.ProseMirror')
    await editor.click()
    await editor.pressSequentially('上一章结尾内容，林远站在演武场中央。')
    await page.keyboard.press('Control+s')
    await expect(page.getByText('已保存')).toBeVisible({ timeout: 15_000 })
    await dismissCockpitIfOpen(page)
    await page.getByRole('button', { name: '+ 新章' }).click()
    await dismissCockpitIfOpen(page)
    await expect(page.locator('[data-testid="bridge-modal"]')).toBeVisible({ timeout: 10_000 })
    await expect(page.locator('[data-testid="bridge-previous-tail"]')).toBeVisible({ timeout: 60_000 })
    await expect(page.locator('[data-testid="bridge-previous-tail"]')).not.toHaveText('（无）')
    await app.close()
  })

  test('E2E-STOCK-01: low stock warning in statusbar', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '存稿书')
    await page.locator('.top-btn').filter({ hasText: '⚙' }).click()
    await page.locator('[data-testid="settings-update-schedule"]').selectOption('daily')
    await page.locator('[data-testid="settings-stock-threshold"]').fill('3')
    await page.locator('[data-testid="settings-stock-threshold"]').blur()
    await page.waitForTimeout(500)
    await page.getByText('存稿书').click()
    await expect(page.locator('#editor-layout')).toBeVisible({ timeout: 10_000 })
    await expect(page.locator('[data-testid="status-stock-warning"]')).toBeVisible({ timeout: 10_000 })
    await app.close()
  })

  test('E2E-BRIDGE-02: bridge shows AI suggestion', async () => {
    test.setTimeout(300_000)
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, 'AI衔接书')
    await ensureChapterEditor(page)
    const editor = page.locator('.ProseMirror')
    await editor.click()
    await editor.pressSequentially('林远站在演武场中央，众人目光汇聚，他知道从这一刻起一切都将不同。')
    await page.keyboard.press('Control+s')
    await page.waitForTimeout(1000)
    await dismissCockpitIfOpen(page)
    await page.getByRole('button', { name: '+ 新章' }).click()
    await dismissCockpitIfOpen(page)
    await expect(page.locator('[data-testid="bridge-modal"]')).toBeVisible({ timeout: 15_000 })
    await expect(page.locator('[data-testid="bridge-ai-suggestion"]')).not.toBeEmpty({ timeout: 240_000 })
    await app.close()
  })
})