src/utils/downloadFileToTmp.mts

import path from "node:path"
import fs from "node:fs"

import tmpDir from "temp-dir"

export const downloadFileToTmp = async (remoteUrl: string, fileName: string) => {

  const filePath = path.resolve(tmpDir, fileName)

  const controller = new AbortController()
  const timeoutId = setTimeout(() => controller.abort(), 15 * 60 * 60 * 1000) // 15 minutes

  // TODO finish the timeout?

  // download the file
  const response = await fetch(remoteUrl, {
    signal: controller.signal
  })

  // write it to the disk
  const arrayBuffer = await response.arrayBuffer()

  await fs.promises.writeFile(
    filePath,
    Buffer.from(arrayBuffer)
  )

  return filePath
}