// Keyless boot-chain smoke over the REAL carrier: startWebServer + entry
// graph (__DSH_BOOT__ web2 shape) injection + built shell dist in a real
// chromium. First describe: graph injection + the fail-loud half. Second
// describe: the settled success pass — all nine REAL tsdown bundles load
// through the module system + vendored Loader chain in ?fixture mode (the
// infrastructure four ride the immediately prefetch tier, the UI rows fetch
// on demand), the three-column frame appears in one flip, and the resident
// question completes through the real UI stack. The full model round lands
// in smoke-real under the W5 real-host standard.
import { existsSync } from 'node:fs'
import { fileURLToPath } from 'node:url'
import type { Browser, Page } from 'playwright'
import { chromium } from 'playwright'
import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
import { startWebServer } from '@deepseek-ai/dsh-host-webserver'
import type { WebBootEntry, WebBootGraph } from '@deepseek-ai/dsh-host-webserver'
import { DIST_INDEX, probeFreePort, requireDist, saveFailureShot } from './support.ts'

const bundlePath = (dir: string): string =>
  fileURLToPath(new URL(`../../../packages/client/${dir}/lib/client.js`, import.meta.url))

const LAYOUT_ID = '@deepseek-ai/dsh-client-ui-layout'
const SIDEBAR_ID = '@deepseek-ai/dsh-client-ui-sidebar'

/** id ↔ bundle table for the success pass (the complete Web UI assembly). */
const REAL_PLUGINS: { id: string; dir: string; inject?: string[]; immediately?: boolean }[] = [
  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', immediately: true },
  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', immediately: true },
  { id: '@deepseek-ai/dsh-client-i18n', dir: 'i18n', immediately: true },
  { id: LAYOUT_ID, dir: 'ui-layout', inject: ['@deepseek-ai/dsh-client-runtime'] },
  { id: SIDEBAR_ID, dir: 'ui-sidebar', inject: [LAYOUT_ID] },
  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', inject: [LAYOUT_ID] },
  { id: '@deepseek-ai/dsh-client-ui-question', dir: 'ui-question', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
]

const BUNDLE_PATHS = new Map(REAL_PLUGINS.map(p => [p.id, bundlePath(p.dir)]))

const row = (id: string, extra?: Partial<WebBootEntry>): WebBootEntry =>
  ({ id, url: `/plugins/${id}/client.js?rev=e2e`, rev: 'e2e', ...extra })

const graphRows: WebBootEntry[] = REAL_PLUGINS.map(p => row(p.id, {
  ...(p.inject !== undefined ? { inject: p.inject } : {}),
  ...(p.immediately === true ? { immediately: true } : {}),
}))

/** Graph for the fail-loud half: the immediately tier, one live UI row, one missing row. */
const FAIL_GRAPH: WebBootGraph = {
  rev: 'e2e-fail',
  entries: [...graphRows.filter(r => r.immediately === true), row(LAYOUT_ID), row('@probe/absent')],
}

/** Graph for the success pass: the complete assembly. */
const OK_GRAPH: WebBootGraph = { rev: 'e2e-ok', entries: graphRows }

/** Registry stub over a fixed graph (the real HostWebPluginRegistry is webserver-side production code). */
function fixedRegistry(graph: WebBootGraph, byId: ReadonlyMap<string, string>) {
  return {
    graph: () => graph,
    clientPath: (id: string) => byId.get(id),
    onRebuilt: () => () => undefined,
  }
}

describe('web boot chain (keyless, real carrier)', () => {
  let server: Awaited<ReturnType<typeof startWebServer>>
  let browser: Browser
  let page: Page
  const pageErrors: string[] = []

  beforeAll(async () => {
    requireDist()
    const port = await probeFreePort()
    const apiHandler = { fetch: () => Promise.resolve(new Response('boot smoke must not call /api', { status: 500 })) }
    server = await startWebServer({
      host: '127.0.0.1',
      port,
      distIndex: DIST_INDEX,
      apiHandler,
      webPlugins: fixedRegistry(FAIL_GRAPH, BUNDLE_PATHS),
    }, (err) => { pageErrors.push(`server: ${String(err)}`) })
    browser = await chromium.launch()
    page = await browser.newPage()
    page.on('pageerror', e => pageErrors.push(String(e)))
    await page.goto(`http://127.0.0.1:${port}/`, { waitUntil: 'load' })
  })

  afterAll(async () => {
    await browser?.close()
    await server?.close()
  })

  it('GET / injects the entry graph verbatim', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-boot-manifest'))
    const boot = await page.evaluate(() => (window as { __DSH_BOOT__?: unknown }).__DSH_BOOT__)
    expect(boot).toEqual(FAIL_GRAPH)
  })

  it('serves a real bundle through the plugins endpoint', async () => {
    const res = await page.request.get(`${new URL(page.url()).origin}/plugins/${LAYOUT_ID}/client.js`)
    expect(res.status()).toBe(200)
    expect(await res.text()).toContain('window.__ModuleLoader__.load')
  })

  it('boots to the loading page and fail-louds the absent entry', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-boot-fail-loud'))
    await page.waitForSelector('text=HARNESS', { timeout: 10_000 })
    await page.waitForSelector('text=Failed to load plugins', { timeout: 10_000 })
    await page.waitForSelector('text=@probe/absent', { timeout: 2000 })
    // The real UI must not have flipped in: the gate opens only on settled.
    expect(await page.locator('[class*="frame"]').count()).toBe(0)
  })

  it('applies the token sheets before any plugin CSS', async () => {
    const family = await page.evaluate(() => getComputedStyle(document.body).getPropertyValue('--dsw-font-family'))
    expect(family.trim().length).toBeGreaterThan(0)
  })
})

describe('web boot chain success pass (keyless, nine real bundles, ?fixture)', () => {
  let server: Awaited<ReturnType<typeof startWebServer>>
  let browser: Browser
  let page: Page
  const pageErrors: string[] = []

  beforeAll(async () => {
    requireDist()
    const missing = REAL_PLUGINS.filter(p => !existsSync(bundlePath(p.dir)))
    if (missing.length > 0) throw new Error(`client bundles not built (pnpm --filter <pkg> bundle): ${missing.map(m => m.dir).join(', ')}`)
    const port = await probeFreePort()
    // ?fixture never opens HTTP streams; /api is a tripwire like the first describe.
    const apiHandler = { fetch: () => Promise.resolve(new Response('fixture mode must not call /api', { status: 500 })) }
    server = await startWebServer({
      host: '127.0.0.1',
      port,
      distIndex: DIST_INDEX,
      apiHandler,
      webPlugins: fixedRegistry(OK_GRAPH, BUNDLE_PATHS),
    }, (err) => { pageErrors.push(`server: ${String(err)}`) })
    browser = await chromium.launch()
    page = await browser.newPage()
    page.on('pageerror', e => pageErrors.push(String(e)))
    await page.goto(`http://127.0.0.1:${port}/?fixture`, { waitUntil: 'load' })
  })

  afterAll(async () => {
    await browser?.close()
    await server?.close()
  })

  it('settles and flips to the three-column frame in one pass', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-boot-settled'))
    await page.waitForSelector('[class*="frame"]', { timeout: 15_000 })
    // Loading page is gone; the grid carries the three tracks.
    expect(await page.locator('text=Failed to load plugins').count()).toBe(0)
    const template = await page.locator('[class*="frame"]').evaluate(el => getComputedStyle(el).gridTemplateColumns)
    expect(template.split(' ').length).toBe(3)
  })

  it('every plugin CSS landed with its ownership tag', async () => {
    const owners = await page.evaluate(() =>
      [...document.querySelectorAll('style[data-plugin]')].map(s => (s as HTMLElement).dataset['plugin']))
    expect(owners).toContain(LAYOUT_ID)
    expect(owners).toContain(SIDEBAR_ID)
  })

  it('collapsed sidebar animates to a 56px rail with the four controls', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-boot-collapsed-rail'))
    const frame = page.locator('[class*="frame"]')
    const firstTrack = async (): Promise<string> => (await frame.evaluate(
      el => getComputedStyle(el).gridTemplateColumns)).split(' ')[0]!
    // The tracks transition on the deepsuite curve; assert the animated
    // settle rather than an instant jump.
    const settledTrack = async (px: string): Promise<void> => {
      await expect.poll(firstTrack, { timeout: 2000 }).toBe(px)
    }
    // The brand wordmark is decorative svg (aria-hidden) — presence tracks the wide chrome.
    const brand = () => page.locator('[class*="brand"]').count()
    await page.getByRole('button', { name: 'Collapse sidebar' }).click()
    // Mid-collapse the wide chrome is still mounted, fading — not swapped out.
    expect(await brand()).toBe(1)
    await settledTrack('56px')
    await expect.poll(brand, { timeout: 2000 }).toBe(0)
    for (const name of ['Open sidebar', 'New session', 'New workspace', 'Search sessions', 'Settings']) {
      await expect(page.getByRole('button', { name }).isVisible(), name).resolves.toBe(true)
    }
    await page.getByRole('button', { name: 'Open sidebar' }).click()
    await settledTrack('280px')
    await expect(page.getByRole('button', { name: 'Collapse sidebar' }).isVisible()).resolves.toBe(true)
    // Rail search: collapse again, the search control expands and lands in the box.
    await page.getByRole('button', { name: 'Collapse sidebar' }).click()
    await settledTrack('56px')
    await page.getByRole('button', { name: 'Search sessions' }).click()
    await settledTrack('280px')
    // Focus is deferred past the slide (EXPAND_SLIDE_MS) — poll for it.
    await expect.poll(() => page.evaluate(() =>
      (document.activeElement as HTMLInputElement | null)?.placeholder ?? ''), { timeout: 2000 }).toContain('Search')
  })

  it('renders file tool rows and expands fixture reasoning from either click target', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-think-disclosure'))
    await page.locator('[role="treeitem"]').first().click()
    await page.locator('[role="treeitem"][aria-selected]').first().click()

    const thinkRoot = page.locator('[data-variant="think"]').first()
    const think = thinkRoot.getByRole('button')
    await think.waitFor({ state: 'visible', timeout: 10_000 })
    expect(await think.getAttribute('aria-expanded')).toBe('false')

    await thinkRoot.getByText(/^思考过程 .*reasoning 内容。$/).click()
    expect(await think.getAttribute('aria-expanded')).toBe('true')
    expect(await thinkRoot.locator(':scope > div').count()).toBe(2)

    await think.getByText('Think', { exact: true }).click()
    expect(await think.getAttribute('aria-expanded')).toBe('false')

    const editRoot = page.locator('[data-variant="edit"]').first()
    await editRoot.waitFor({ state: 'visible', timeout: 10_000 })
    expect(await editRoot.getByText('Edit', { exact: true }).count()).toBe(1)
    expect(await editRoot.getByText('notes/demo.txt', { exact: true }).count()).toBe(1)

    const writeRoot = page.locator('[data-variant="write"]').first()
    await writeRoot.waitFor({ state: 'visible', timeout: 10_000 })
    expect(await writeRoot.getByText('Write', { exact: true }).count()).toBe(1)
    expect(await writeRoot.getByText('notes/new-demo.txt', { exact: true }).count()).toBe(1)
  })

  it('keeps Markdown semantic while a fixture reply streams and finalizes', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-markdown-stream'))
    await page.getByRole('button', { name: 'New session', exact: true }).click()
    const input = page.locator('textarea[placeholder]')
    await input.waitFor({ timeout: 15_000 })
    await input.fill('render markdown')
    await page.getByRole('button', { name: '发送' }).click()

    const streaming = page.locator('[data-streaming="true"]')
    await streaming.getByRole('heading', { name: 'Markdown fixture' }).waitFor({ timeout: 15_000 })
    await streaming.waitFor({ state: 'detached', timeout: 15_000 })

    const finalHeading = page.getByRole('heading', { name: 'Markdown fixture' })
    expect(await finalHeading.evaluate(element => element.tagName)).toBe('H1')
    expect(await page.locator('pre code').filter({ hasText: 'const markdown = true' }).count()).toBe(1)
    const external = page.getByRole('link', { name: 'DeepSeek' })
    expect(await external.getAttribute('target')).toBe('_blank')
    expect(await external.getAttribute('rel')).toBe('noopener noreferrer')
  })

  it('renders and completes the resident question through the composer slot', async () => {
    onTestFailed(() => saveFailureShot(page, 'smoke-question-composer'))
    const sessionTree = page.getByRole('tree', { name: 'Sessions' })
    const projectRow = sessionTree.getByRole('treeitem').filter({ hasText: '3 sessions' })
    if (await projectRow.getAttribute('aria-expanded') === 'false') await projectRow.click()
    await sessionTree.getByText('Fixture 历史会话', { exact: true }).click()
    const composer = page.locator('[data-question-key]')
    await composer.waitFor({ timeout: 15_000 })
    expect({
      question: await composer.getByRole('heading').innerText(),
      progress: await composer.getByText('1 / 3', { exact: true }).innerText(),
      options: await composer.getByRole('radio').allTextContents(),
      custom: await composer.getByRole('button', { name: '其他，请填写自定义答案' }).innerText(),
    }).toMatchInlineSnapshot(`
      {
        "custom": "其他，请填写自定义答案",
        "options": [
          "1工程落地型推荐更看重能直接做 runtime、tool executor、sandbox、trace 和线上问题排查。",
          "2研究潜力型更看重 Agent 理解、训练评测思路和长期成长空间。",
          "3均衡型同时要求工程能力和 Agent 认知，但可能筛选门槛更高。",
        ],
        "progress": "1 / 3",
        "question": "你现在更想招哪类 Agent/Harness 候选人？",
      }
    `)

    await composer.getByRole('radio', { name: '工程落地型' }).click()
    await composer.getByText('2 / 3', { exact: true }).waitFor()
    await composer.getByRole('button', { name: '跳过本题', exact: true }).click()
    await composer.getByRole('checkbox', { name: '系统设计' }).click()
    await composer.getByRole('checkbox', { name: 'Agent 产品判断' }).click()
    await composer.getByRole('checkbox', { name: 'Agent 产品判断' }).press('Enter')

    await composer.waitFor({ state: 'detached' })
    const restoredInput = page.locator('textarea[placeholder]')
    await restoredInput.waitFor()
    expect(await restoredInput.getAttribute('placeholder')).toBe('回复生成中，可停止后再输入')
  })

  it('stayed clean: no page errors across the whole load chain', () => {
    expect(pageErrors).toEqual([])
  })
})