/**
 * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
 */

package akka.persistence

import java.io.{ File, IOException }

import akka.actor.{ ActorInitializationException, ActorRef, Props }
import akka.testkit.{ AkkaSpec, EventFilter, ImplicitSender }

object SnapshotDirectoryFailureSpec {
  val inUseSnapshotPath = "target/inUseSnapshotPath"

  class TestPersistentActor(name: String, probe: ActorRef) extends PersistentActor
    with TurnOffRecoverOnStart {

    override def persistenceId: String = name

    override def receiveRecover: Receive = {
      case SnapshotOffer(md, s) ⇒ probe ! ((md, s))
    }

    override def receiveCommand = {
      case s: String               ⇒ saveSnapshot(s)
      case SaveSnapshotSuccess(md) ⇒ probe ! md.sequenceNr
      case other                   ⇒ probe ! other
    }
  }
}

class SnapshotDirectoryFailureSpec extends AkkaSpec(PersistenceSpec.config("leveldb", "SnapshotDirectoryFailureSpec", extraConfig = Some(
  s"""
  akka.persistence.snapshot-store.local.dir = "${SnapshotDirectoryFailureSpec.inUseSnapshotPath}"
  """))) with ImplicitSender {

  import SnapshotDirectoryFailureSpec._

  val file = new File(inUseSnapshotPath)

  override protected def atStartup() {
    if (!file.createNewFile()) throw new IOException(s"Failed to create test file [${file.getCanonicalFile}]")
  }

  override protected def afterTermination() {
    if (!file.delete()) throw new IOException(s"Failed to delete test file [${file.getCanonicalFile}]")
  }

  "A local snapshot store configured with an failing directory name " must {
    "throw an exception at startup" in {
      EventFilter[ActorInitializationException](occurrences = 1).intercept {
        val p = system.actorOf(Props(classOf[TestPersistentActor], "SnapshotDirectoryFailureSpec-1", testActor))
        p ! "blahonga"
      }
    }
  }
}