client.saveOrThrow(context).kt

fun Context.outputStreamOrThrow(fileName: String, type: String = Environment.DIRECTORY_DOWNLOADS) =
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                contentResolver.run {
                        openOutputStream(insert(
                                MediaStore.Downloads.EXTERNAL_CONTENT_URI,
                                ContentValues().apply {
                                        put(MediaStore.MediaColumns.DISPLAY_NAME, fileName)
                                        put(MediaStore.MediaColumns.RELATIVE_PATH, type)
                                }
                        )!!)!!
                }
        } else {
                File(getExternalFilesDir(type)!!, fileName).outputStream()
        }
fun Call.Factory.saveOrThrow(context: Context, url: HttpUrl, type: String = Environment.DIRECTORY_DOWNLOADS) =
        newCall(Request.Builder().url(url).build()).execute().takeIf { it.isSuccessful }!!.body!!.byteStream().copyTo(context.outputStreamOrThrow(url.fileName(), type))

https://stackoverflow.com/questions/59103133/how-to-directly-download-a-file-to-download-directory-on-android-q-android-10