import { Readable } from "node:stream"

export default defineEventHandler((event) => {
  const size = 128 * 1024 * 1024
  let sent = 0

  const stream = new Readable({
    read(chunkSize) {
      if (sent >= size) {
        this.push(null)
        return
      }

      const remaining = size - sent
      const chunk = Buffer.alloc(Math.min(chunkSize, remaining), "a")
      sent += chunk.length
      this.push(chunk)
    }
  })

  setHeader(event, "Content-Type", "application/octet-stream")
  setHeader(event, "Content-Length", size)
  return stream
})