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 })
  if (await page.getByText('欢迎使用笔临').isVisible()) {
    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)
}

async function ensureChapterEditor(page: Page): Promise<void> {
  await dismissCockpitIfOpen(page)
  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 addApprovedKnowledge(page: Page, title: string): Promise<void> {
  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(title)
  await page.locator('[data-testid="knowledge-save"]').click()
  await page.locator('[data-testid="knowledge-tab-pending"]').click()
  await page.locator('[data-testid^="knowledge-approve-"]').first().click()
}

test.describe('AI knowledge context P6', () => {
  let userDataDir: string

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

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

  test('E2E-CTX-01: context editor knowledge tab shows suggestions', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '上下文书')
    await ensureChapterEditor(page)
    await addApprovedKnowledge(page, '测灵石异常')
    await page.getByTestId('panel-tab-ai').click()
    await page.getByTestId('ai-session-new').click()
    await page.getByTestId('ai-context-preview').click()
    await expect(page.getByTestId('context-editor-modal')).toBeVisible({ timeout: 10_000 })
    await page.getByTestId('context-tab-knowledge').click()
    await expect(page.getByTestId('context-knowledge-suggest')).toBeVisible({ timeout: 10_000 })
    await app.close()
  })

  test('E2E-CTX-02: interactive context_confirm shows knowledge suggest', async () => {
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '交互知识书')
    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。')
    await page.keyboard.press('Control+s')
    await expect(page.getByText('已保存')).toBeVisible({ timeout: 15_000 })
    await addApprovedKnowledge(page, '测灵石异常')
    await page.getByTestId('panel-tab-ai').click()
    await page.getByTestId('ai-session-new').click()
    await expect(page.getByTestId('ai-mode-tab-interactive')).toBeEnabled({ timeout: 10_000 })
    await page.getByTestId('ai-mode-tab-interactive').click()
    await expect(page.getByTestId('interactive-knowledge-suggest')).toBeVisible({ timeout: 15_000 })
    await app.close()
  })

  test('E2E-CTX-03: chat with knowledge context gets AI reply', async () => {
    test.setTimeout(300_000)
    const app = await launchApp(userDataDir)
    const page = await app.firstWindow()
    await skipOnboarding(page)
    await createAndOpenBook(page, '对话知识书')
    await ensureChapterEditor(page)
    await addApprovedKnowledge(page, '测灵石异常')
    await page.getByTestId('panel-tab-ai').click()
    await page.getByTestId('ai-session-new').click()
    await page.getByTestId('ai-context-preview').click()
    await page.getByTestId('context-tab-knowledge').click()
    await page.getByTestId('context-save').click()
    await page.getByTestId('ai-chat-input').fill('根据知识库，本章可能发生什么？')
    await page.getByTestId('ai-send').click()
    await expect(page.getByTestId('chat-message-assistant').last()).not.toBeEmpty({ timeout: 240_000 })
    await app.close()
  })
})