const assert = require('assert')

const a01Url = 'http://localhost:5173/#/pages/auth/a01-entry'
const a05Url = 'http://localhost:5173/#/pages/auth/a05-reset-password'
const sleep = (milliseconds) => new Promise((resolve) => setTimeout(resolve, milliseconds))

const connect = async () => {
  const port = process.env.CHROME_DEBUGGING_PORT || '9222'
  const pages = await (await fetch(`http://127.0.0.1:${port}/json/list`)).json()
  const page = pages.find((item) => item.type === 'page' && item.url.startsWith('http://localhost:5173'))
  if (!page) throw new Error('Chrome debugging has no application page')
  const socket = new WebSocket(page.webSocketDebuggerUrl)
  await new Promise((resolve, reject) => {
    socket.addEventListener('open', resolve, { once: true })
    socket.addEventListener('error', reject, { once: true })
  })
  let id = 0
  const pending = new Map()
  const exceptions = []
  socket.addEventListener('message', (event) => {
    const message = JSON.parse(event.data)
    if (message.method === 'Runtime.exceptionThrown') exceptions.push(message.params.exceptionDetails.text)
    const request = pending.get(message.id)
    if (!request) return
    pending.delete(message.id)
    if (message.error) request.reject(new Error(message.error.message))
    else request.resolve(message.result)
  })
  const send = (method, params = {}) => new Promise((resolve, reject) => {
    id += 1
    pending.set(id, { resolve, reject })
    socket.send(JSON.stringify({ id, method, params }))
  })
  return { socket, send, exceptions }
}

const valueOf = async (send, expression) => {
  const result = await send('Runtime.evaluate', { expression, returnByValue: true })
  if (result.exceptionDetails) throw new Error(result.exceptionDetails.exception?.description || result.exceptionDetails.text)
  return result.result?.value
}

const waitFor = async (send, expression, message) => {
  for (let attempt = 0; attempt < 40; attempt += 1) {
    if (await valueOf(send, expression)) return
    await sleep(100)
  }
  throw new Error(message)
}

const navigate = async (send, url, selector) => {
  const targetUrl = url.replace('/#/', `/?runtime=${Date.now()}#/`)
  await send('Page.navigate', { url: targetUrl })
  await waitFor(send, `location.href.includes(${JSON.stringify(new URL(url).hash.slice(1))})`, `Page did not navigate to ${url}`)
  await waitFor(send, `Boolean(document.querySelector(${JSON.stringify(selector)}))`, `Page did not render ${selector}`)
}

const setInputs = async (send, values) => {
  for (const [index, value] of values.entries()) {
    await valueOf(send, `(() => {
      const input = document.querySelectorAll('.auth-input input')[${index}]
      input.value = ${JSON.stringify(value)}
      input.dispatchEvent(new Event('input', { bubbles: true }))
    })()`)
    await sleep(30)
  }
}

const run = async () => {
  const { socket, send, exceptions } = await connect()
  try {
    await send('Page.enable')
    await send('Runtime.enable')

    await navigate(send, a01Url, '.login-tab')
    await valueOf(send, "document.querySelectorAll('.login-tab')[0].click()")
    await waitFor(send, "Boolean(document.querySelector('.forgot-password'))", 'A01 password state did not expose forgot-password entry')
    await valueOf(send, "document.querySelector('.forgot-password').click()")
    await waitFor(send, "location.href.includes('/pages/auth/a05-reset-password')", 'A01 forgot-password entry did not open A05')

    for (const size of [
      { width: 320, height: 568 },
      { width: 360, height: 616 },
      { width: 360, height: 640 },
      { width: 360, height: 800 },
      { width: 412, height: 915 },
      { width: 480, height: 1040 }
    ]) {
      await send('Emulation.setDeviceMetricsOverride', { ...size, deviceScaleFactor: 1, mobile: true })
      await navigate(send, a05Url, '.reset-submit')
      await waitFor(send, "document.querySelector('.auth-shell__header-image img')?.naturalWidth === 824", `A05 header did not load at ${size.width}x${size.height}`)
      const metrics = await valueOf(send, `(() => {
        const header = document.querySelector('.auth-shell__header')
        const headerImage = document.querySelector('.auth-shell__header-image img')
        const paper = document.querySelector('.auth-shell__paper')
        const title = document.querySelector('.page-title')
        const loginEntry = document.querySelector('.login-entry')
        return {
          width: document.documentElement.scrollWidth,
          documentScrollHeight: Math.max(document.documentElement.scrollHeight, document.body.scrollHeight),
          headerBottom: header?.getBoundingClientRect().bottom,
          headerImageWidth: headerImage?.getBoundingClientRect().width,
          headerImageHeight: headerImage?.getBoundingClientRect().height,
          headerNaturalWidth: headerImage?.naturalWidth,
          headerNaturalHeight: headerImage?.naturalHeight,
          paperTop: paper?.getBoundingClientRect().top,
          titleCenter: title ? title.getBoundingClientRect().left + title.getBoundingClientRect().width / 2 : null,
          loginEntryBottom: loginEntry?.getBoundingClientRect().bottom + window.scrollY
        }
      })()`)
      assert(metrics.width <= size.width + 1, `A05 has horizontal overflow at ${size.width}x${size.height}`)
      assert.deepStrictEqual([metrics.headerNaturalWidth, metrics.headerNaturalHeight], [824, 340], `A05 header asset changed at ${size.width}x${size.height}`)
      assert(Math.abs(metrics.headerImageHeight / metrics.headerImageWidth - 340 / 824) < 0.01, `A05 header is distorted at ${size.width}x${size.height}`)
      assert(metrics.paperTop >= metrics.headerBottom - 1, `A05 paper overlaps its header at ${size.width}x${size.height}`)
      assert(Math.abs(metrics.titleCenter - size.width / 2) <= 1, `A05 title is not centered at ${size.width}x${size.height}: ${metrics.titleCenter}`)
      assert(metrics.loginEntryBottom <= metrics.documentScrollHeight + 1, `A05 last action is unreachable at ${size.width}x${size.height}`)
    }

    await valueOf(send, "document.querySelector('.get-code').click()")
    await waitFor(send, "Boolean(document.querySelector('.field-error'))", 'A05 invalid phone did not show inline error')
    await setInputs(send, ['13800138000', '', '', ''])
    await valueOf(send, "document.querySelector('.get-code').click()")
    await waitFor(send, "Boolean(document.querySelector('.feedback-toast'))", 'A05 code request did not use custom pending feedback')
    assert.strictEqual(await valueOf(send, "document.querySelector('.feedback-toast').textContent.trim()"), '滑动验证待接口接入', 'A05 code request showed the wrong pending feedback')
    assert.strictEqual(await valueOf(send, "Boolean(document.querySelector('.verification-layer'))"), false, 'A05 must not retain the old verification panel')
    assert.strictEqual(await valueOf(send, "document.querySelector('.auth-input input').value"), '13800138000', 'A05 pending slider feedback cleared the form')
    assert.strictEqual(await valueOf(send, "document.querySelector('.get-code').textContent.trim()"), '获取验证码', 'A05 must not fake a requested-code state before the real slider and SMS interface')

    await valueOf(send, "document.querySelector('.reset-submit').click()")
    await waitFor(send, "document.querySelectorAll('.field-error').length === 3", 'A05 incomplete submit did not show three remaining field errors')
    await setInputs(send, ['13800138000', '123456', 'new-password', 'different-password'])
    await sleep(100)
    await valueOf(send, "document.querySelector('.reset-submit').click()")
    await sleep(100)
    const mismatchState = await valueOf(send, `({
      values: Array.from(document.querySelectorAll('.auth-input input')).map((item) => item.value),
      errors: Array.from(document.querySelectorAll('.field-error')).map((item) => item.textContent),
      success: Boolean(document.querySelector('.success-layer'))
    })`)
    assert(mismatchState.errors.some((message) => message.includes('不一致')), `A05 mismatched passwords did not show inline error: ${JSON.stringify(mismatchState)}`)

    await setInputs(send, ['13800138000', '123456', 'new-password', 'new-password'])
    await sleep(100)
    await valueOf(send, "document.querySelector('.reset-submit').click()")
    await waitFor(send, "Boolean(document.querySelector('.success-layer'))", 'A05 valid submit did not show custom success result')
    await valueOf(send, "document.querySelector('.success-action').click()")
    await waitFor(send, "Boolean(document.querySelector('.login-tab')) && (location.hash === '#/' || location.href.includes('/pages/auth/a01-entry'))", 'A05 success action did not return to A01')
    assert.deepStrictEqual(exceptions, [], `A05 raised browser exceptions: ${exceptions.join('; ')}`)

    process.stdout.write('A05-RESET-PASSWORD-RUNTIME-SMOKE PASS\n')
  } finally {
    try { await send('Emulation.clearDeviceMetricsOverride') } catch (_) {}
    socket.close()
  }
}

run().catch((error) => {
  process.stderr.write(`${error.stack || error.message}\n`)
  process.exit(1)
})