const assert = require('assert')

const origin = process.argv[2] || 'http://localhost:5173'
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.startsWith(`${origin}/`))
  if (!page) throw new Error(`Chrome debugging has no ${origin} project 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 < 50; attempt += 1) {
    if (await valueOf(send, expression)) return
    await sleep(80)
  }
  throw new Error(message)
}

const run = async () => {
  const { socket, send } = await connect()
  let auditId = 0

  const navigate = async (route, selector) => {
    auditId += 1
    const url = `${origin}/?f08RuntimeAudit=${auditId}#${route}`
    await send('Page.navigate', { url })
    await waitFor(send, `location.href === ${JSON.stringify(url)}`, `F08 navigation failed: ${route}`)
    await waitFor(send, `Boolean(document.querySelector(${JSON.stringify(selector)}))`, `F08 state missing: ${selector}`)
  }

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

    await navigate('/pages/family/f08-album-detail', '.album-state--normal')
    const photoCount = await valueOf(send, "document.querySelectorAll('.album-photo-tile').length")
    assert.strictEqual(photoCount, 5, 'F08 normal state must render five photo tiles')

    await send('Runtime.evaluate', { expression: "document.querySelector('.album-photo-tile')?.click()" })
    await waitFor(send, "Boolean(document.querySelector('.album-preview'))", 'F08 photo click did not open preview')
    await send('Runtime.evaluate', { expression: "document.querySelector('.album-preview__close')?.click()" })
    await waitFor(send, "!document.querySelector('.album-preview')", 'F08 preview did not close')

    await send('Runtime.evaluate', { expression: "document.querySelector('.album-upload-action')?.click()" })
    await waitFor(send, "Boolean(document.querySelector('.app-toast'))", 'F08 upload notice did not render')

    await navigate('/pages/family/f08-album-detail?state=empty', '.album-state--empty')
    assert.strictEqual(await valueOf(send, "document.querySelectorAll('.album-photo-tile').length"), 0, 'F08 empty state must not render photos')

    await navigate('/pages/family/f08-album-detail?state=preview', '.album-state--preview')
    await waitFor(send, "Boolean(document.querySelector('.album-preview'))", 'F08 direct preview state did not render')

    await navigate('/pages/family/f08-album-detail?state=expired', '.album-state--expired')
    assert.strictEqual(await valueOf(send, "document.querySelectorAll('.album-photo-tile').length"), 0, 'F08 expired state must not render photos')

    process.stdout.write('F08-ALBUM-DETAIL-RUNTIME-SMOKE PASS\n')
  } finally {
    socket.close()
  }
}

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