export default defineEventHandler(async (event) => {
  const id = getRouterParam(event, 'id')
  const job = id ? getJob(id) : undefined
  if (!job) {
    throw createError({ statusCode: 404, statusMessage: 'Job not found' })
  }

  setResponseHeaders(event, {
    'Cache-Control': 'no-cache, no-store, no-transform',
    'X-Accel-Buffering': 'no',
    Connection: 'keep-alive'
  })

  const stream = createEventStream(event)
  const send = async (payload: unknown) => {
    await stream.push(JSON.stringify(payload))
  }

  await send(jobSnapshot(job))
  for (const past of job.events) {
    await send(past)
  }

  const unsubscribe = subscribeJob(job, (payload) => {
    void send(payload).then(() => {
      if (payload.type === 'complete' || payload.type === 'error') {
        void stream.close()
      }
    })
  })

  const ping = setInterval(() => {
    void send(jobSnapshot(job))
  }, 1000)

  stream.onClosed(() => {
    clearInterval(ping)
    unsubscribe()
  })

  return stream.send()
})