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' })
  }

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

  await send({
    type: 'hello',
    status: job.status,
    message: job.message,
    progress: job.progress,
    step: job.step,
    maxStep: job.maxStep,
    promptId: job.promptId,
    elapsedMs: Date.now() - job.startedAt
  })

  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()
      }
    })
  })

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

  return stream.send()
})