const sleep = (milliseconds) => new Promise((resolve) => setTimeout(resolve, milliseconds))
const origin = process.argv[2] || 'http://localhost:5173'

const connect = async () => {
  const pages = await (await fetch('http://127.0.0.1:9222/json/list')).json()
  const page = pages.find((item) => item.type === 'page' && item.url.startsWith(`${origin}/`))
  if (!page) throw new Error(`Chrome debugging has no ${origin} 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()
  socket.addEventListener('message', (event) => {
    const message = JSON.parse(event.data)
    const request = pending.get(message.id)
    if (!request) return
    pending.delete(message.id)
    message.error ? request.reject(new Error(message.error.message)) : 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 }
}

const valueOf = async (send, expression) => (await send('Runtime.evaluate', { expression, returnByValue: true })).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 waitForPageLoad = async (socket, trigger) => new Promise((resolve, reject) => {
  const timeout = setTimeout(() => {
    socket.removeEventListener('message', onMessage)
    reject(new Error('Page reload did not emit Page.loadEventFired'))
  }, 4000)
  const onMessage = (event) => {
    const message = JSON.parse(event.data)
    if (message.method === 'Page.loadEventFired') {
      clearTimeout(timeout)
      socket.removeEventListener('message', onMessage)
      resolve()
    }
  }
  socket.addEventListener('message', onMessage)
  Promise.resolve().then(trigger).catch((error) => {
    clearTimeout(timeout)
    socket.removeEventListener('message', onMessage)
    reject(error)
  })
})
const open = async (socket, send, route, query, selector) => {
  const url = `${origin}/#${route}${query}`
  await send('Page.navigate', { url })
  await waitFor(send, `location.href === ${JSON.stringify(url)}`, `${route} navigation failed`)
  await waitForPageLoad(socket, () => send('Page.reload'))
  await waitFor(send, `Boolean(document.querySelector(${JSON.stringify(selector)}))`, `${route}${query} did not render`)
}

const setFieldValue = async (send, selector, value) => {
  const prepared = await valueOf(send, `(() => {
    const field = document.querySelector(${JSON.stringify(selector)})
    if (!field) return false
    field.value = ${JSON.stringify(value)}
    field.dispatchEvent(new Event('input', { bubbles: true }))
    return true
  })()`)
  if (!prepared) throw new Error(`Could not prepare field: ${selector}`)
  await sleep(50)
}

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

    // 步骤一：G11 从真实表单触发必填校验，再保存有效名称并进入成功反馈。
    await open(socket, send, '/pages/genealogy/g11-genealogy-settings', '?genealogyId=1001', '.settings-state--form')
    await setFieldValue(send, '.settings-field input', '')
    await valueOf(send, "document.querySelector('.settings-action').click()")
    await waitFor(send, "Boolean(document.querySelector('.settings-field-error'))", 'G11 empty name did not show inline validation')
    await setFieldValue(send, '.settings-field input', '某氏家谱')
    await valueOf(send, "document.querySelector('.settings-action').click()")
    await waitFor(send, "Boolean(document.querySelector('.settings-state--success'))", 'G11 valid save did not enter success state')
    await waitFor(send, "Boolean(document.querySelector('.settings-feedback'))", 'G11 valid save did not show feedback')
    await open(socket, send, '/pages/genealogy/g11-genealogy-settings', '?state=success&genealogyId=1001', '.settings-state--success')

    // 步骤二：G12 依次验证空内容、模拟保存失败和真实保存成功，三类结果不能只靠查询参数摆出。
    await open(socket, send, '/pages/genealogy/g12-generation-poems', '?genealogyId=1001', '.poem-state--list')
    await open(socket, send, '/pages/genealogy/g12-generation-poems', '?state=empty&genealogyId=1001', '.poem-state--empty')
    await open(socket, send, '/pages/genealogy/g12-generation-poems', '?state=edit&genealogyId=1001', '.poem-state--edit')
    await setFieldValue(send, '.poem-field textarea', '')
    await valueOf(send, "document.querySelector('.poem-editor__actions .poem-action:last-child').click()")
    await waitFor(send, "document.querySelector('.poem-field-error')?.textContent.includes('请录入字辈内容')", 'G12 empty poem did not show validation')
    await setFieldValue(send, '.poem-field textarea', '失败')
    await valueOf(send, "document.querySelector('.poem-editor__actions .poem-action:last-child').click()")
    await waitFor(send, "document.querySelector('.poem-field-error')?.textContent.includes('保存失败')", 'G12 simulated save failure did not render')
    await setFieldValue(send, '.poem-field textarea', '启宪敦本继世传芳')
    await valueOf(send, "document.querySelector('.poem-editor__actions .poem-action:last-child').click()")
    await waitFor(send, "Boolean(document.querySelector('.poem-state--list'))", 'G12 valid save did not return to the list')
    await waitFor(send, "Boolean(document.querySelector('.poem-feedback'))", 'G12 valid save did not show feedback')
    process.stdout.write('G11-G12-SETTINGS-POEMS-RUNTIME-SMOKE PASS\n')
  } finally {
    socket.close()
  }
}

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