Copies files from one directory tree to output

pic_export.sc

import java.nio.file.{DirectoryStream, Files, Path, Paths}

import scala.collection.JavaConverters._
import scala.collection.mutable.ArrayBuffer

val filesList = ArrayBuffer[String]()
var directoryStream =
  Files.newDirectoryStream(Paths.get("/Users/ashugupt/Pictures/chandrataal"))

val outputJpegPath = Paths.get("/Users/ashugupt/Pictures/chandrataal/jpegs")
val outputRawPath = Paths.get("/Users/ashugupt/Pictures/chandrataal/raw")

def copy(stream: DirectoryStream[Path]): Unit = {
  for (path <- stream.asScala.toList) {
    if (Files.isDirectory(path)
      && !path.endsWith(Paths.get(".DS_Store"))
      && !Files.isSameFile(path, outputJpegPath)
      && !Files.isSameFile(path, outputRawPath)
    ) {
      copy(Files.newDirectoryStream(path))
    } else if (!Files.isDirectory(path)
      && !path.endsWith(Paths.get(".DS_Store"))
      && !Files.isSameFile(path, outputJpegPath)
      && !Files.isSameFile(path, outputRawPath)
    ) {
      println(path.getFileName)
      if (path.toString.toUpperCase.endsWith("JPG")) {
        Files.copy(path, Paths.get(outputJpegPath.toString + "/" + +System.currentTimeMillis + "-" + path.getFileName))
      } else if(path.toString.toUpperCase.endsWith("NEF")) {
        Files.copy(path, Paths.get(outputRawPath.toString + "/" + +System.currentTimeMillis + "-" + path.getFileName))
      }
    }
  }
}
copy(directoryStream)