const sleep = (milliseconds) => new Promise((resolve) => setTimeout(resolve, milliseconds))

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.includes('localhost:5173'))
  if (!page) throw new Error('Chrome debugging has no localhost:5173 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)
    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 }
}

const valueOf = async (send, expression) => {
  const result = await send('Runtime.evaluate', { expression, returnByValue: true })
  return result.result?.value
}

const waitFor = async (send, expression, message) => {
  for (let attempt = 0; attempt < 30; attempt += 1) {
    try {
      if (await valueOf(send, expression)) return
    } catch (error) {
      if (!String(error.message).includes('Inspected target navigated or closed')) throw error
    }
    await sleep(100)
  }
  throw new Error(message)
}

const origin = process.argv[2] || 'http://localhost:5173'
const g01Path = '/pages/genealogy/g01-my-genealogies'
const emptyUrl = `${origin}/#${g01Path}?state=empty`
const defaultUrl = `${origin}/#${g01Path}`

const openEmptyG01 = async (send) => {
  await send('Page.navigate', { url: emptyUrl })
  await waitFor(send, "location.href.includes('g01-my-genealogies?state=empty')", 'Did not navigate to G01 empty state')
  await send('Page.reload')
  await waitFor(send, "Boolean(document.querySelector('.genealogy-empty-state .empty-create-action'))", 'G01 empty state did not render after reload')
}

const run = async () => {
  const { socket, send } = await connect()

  try {
    await send('Page.enable')
    await send('Runtime.enable')

    await openEmptyG01(send)
    await valueOf(send, "document.querySelector('.empty-create-action')?.click()")
    await waitFor(send, "location.href.includes('/pages/genealogy/g03-create-genealogy')", 'G01 empty create action did not open G03')

    await openEmptyG01(send)
    await valueOf(send, "document.querySelector('.empty-search-action')?.click()")
    await waitFor(send, "location.href.includes('/pages/genealogy/g06-search-genealogies')", 'G01 empty search action did not open G06')

    await send('Page.navigate', { url: defaultUrl })
    await waitFor(send, "location.href.endsWith('/pages/genealogy/g01-my-genealogies')", 'Did not navigate to default G01')
    await send('Page.reload')
    await waitFor(send, "Boolean(document.querySelector('.current-slip'))", 'Default G01 list did not render after reload')
    if (await valueOf(send, "Boolean(document.querySelector('.genealogy-empty-state'))")) {
      throw new Error('Default G01 must not render the empty state')
    }

    process.stdout.write('G01-EMPTY-STATE-RUNTIME-SMOKE PASS\n')
  } finally {
    socket.close()
  }
}

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