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

const run = 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 ${origin} project page`)
  const socket = new WebSocket(page.webSocketDebuggerUrl)
  await new Promise((resolve, reject) => {
    socket.addEventListener('open', resolve, { once: true })
    socket.addEventListener('error', reject, { once: true })
  })
  let id = 0
  const pending = new Map()
  socket.addEventListener('message', (event) => {
    const message = JSON.parse(event.data)
    const request = pending.get(message.id)
    if (!request) return
    pending.delete(message.id)
    message.error ? request.reject(new Error(message.error.message)) : request.resolve(message.result)
  })
  const send = (method, params = {}) => new Promise((resolve, reject) => {
    id += 1
    pending.set(id, { resolve, reject })
    socket.send(JSON.stringify({ id, method, params }))
  })
  const valueOf = async (expression) => (await send('Runtime.evaluate', { expression, returnByValue: true })).result?.value
  try {
    await send('Page.enable')
    await send('Runtime.enable')
    await send('Emulation.setDeviceMetricsOverride', { width: 412, height: 915, deviceScaleFactor: 1, mobile: true, screenWidth: 412, screenHeight: 915 })
    const url = `${origin}/?r02BackgroundAudit=1#/pages/records/r02-person-detail?genealogyId=1001&mode=create`
    await send('Page.navigate', { url })
    for (let attempt = 0; attempt < 60; attempt += 1) {
      if (await valueOf("Boolean(document.querySelector('.person-detail-state--edit'))")) break
      await sleep(80)
    }
    await sleep(500)
    const layers = await valueOf(`Array.from(document.querySelectorAll('.person-identity-card,.person-field,.person-long-field')).map((node) => {
      return {
        className: node.className,
        backgroundImage: getComputedStyle(node).backgroundImage,
        position: getComputedStyle(node).position
      }
    })`)
    assert(layers.length >= 6, 'R02 edit cards were not rendered')
    for (const layer of layers) {
      const expectedAsset = layer.className.includes('person-identity-card') ? 'r01-person-name-card.png' : layer.className.includes('person-field') ? 'module-field-frame.png' : 'module-content-frame.png'
      assert(layer.backgroundImage.includes(expectedAsset), `${layer.className} does not use its real background asset`)
      assert.strictEqual(layer.position, 'static', `${layer.className} must remain in document flow`)
    }
    process.stdout.write(`${JSON.stringify(layers)}\nR02-BACKGROUND-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)
})