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package xyz.driver.core
import java.io.File
import java.nio.file.Path
import xyz.driver.core.time.Time
import scala.concurrent.Future
import scalaz.{ListT, OptionT}
package file {
import akka.NotUsed
import akka.stream.scaladsl.Source
import akka.util.ByteString
import java.net.URL
import scala.concurrent.duration.Duration
final case class FileLink(
name: Name[File],
location: Path,
revision: Revision[File],
lastModificationDate: Time,
fileSize: Long
)
trait FileService {
def getFileLink(id: Name[File]): FileLink
def getFile(fileLink: FileLink): File
}
trait FileStorage {
def upload(localSource: File, destination: Path): Future[Unit]
def download(filePath: Path): OptionT[Future, File]
def stream(filePath: Path): OptionT[Future, Source[ByteString, NotUsed]]
def delete(filePath: Path): Future[Unit]
/** List contents of a directory */
def list(directoryPath: Path): ListT[Future, FileLink]
def exists(path: Path): Future[Boolean]
/** List of characters to avoid in S3 (I would say file names in general)
*
* @see http://stackoverflow.com/questions/7116450/what-are-valid-s3-key-names-that-can-be-accessed-via-the-s3-rest-api
*/
private val illegalChars = "\\^`><{}][#%~|&@:,$=+?; "
protected def checkSafeFileName[T](filePath: Path)(f: => T): T = {
filePath.toString.find(c => illegalChars.contains(c)) match {
case Some(illegalCharacter) =>
throw new IllegalArgumentException(s"File name cannot contain character `$illegalCharacter`")
case None => f
}
}
}
trait SignedFileStorage extends FileStorage {
def signedFileUrl(filePath: Path, duration: Duration): OptionT[Future, URL]
}
}
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