package akka.camel.component

import java.util.concurrent.{ TimeUnit, CountDownLatch }

import org.apache.camel.RuntimeCamelException
import org.apache.camel.builder.RouteBuilder
import org.apache.camel.component.mock.MockEndpoint
import org.scalatest.{ BeforeAndAfterEach, BeforeAndAfterAll, FeatureSpec }

import akka.actor.{ Actor, Props, Timeout }
import akka.actor.Actor._
import akka.camel.{ Failure, Message, CamelContextManager }
import akka.camel.CamelTestSupport._

class ActorComponentFeatureTest extends FeatureSpec with BeforeAndAfterAll with BeforeAndAfterEach {
  import ActorComponentFeatureTest._

  override protected def beforeAll = {
    Actor.registry.local.shutdownAll
    CamelContextManager.init
    CamelContextManager.mandatoryContext.addRoutes(new TestRoute)
    CamelContextManager.start
  }

  override protected def afterAll = CamelContextManager.stop

  override protected def afterEach = {
    Actor.registry.local.shutdownAll
    mockEndpoint.reset
  }

  feature("Communicate with an actor via an actor:uuid endpoint") {
    import CamelContextManager.mandatoryTemplate

    scenario("one-way communication") {
      val actor = actorOf[Tester1]
      val latch = (actor ? SetExpectedMessageCount(1)).as[CountDownLatch].get
      mandatoryTemplate.sendBody("actor:uuid:%s" format actor.uuid, "Martin")
      assert(latch.await(5000, TimeUnit.MILLISECONDS))
      val reply = (actor ? GetRetainedMessage).get.asInstanceOf[Message]
      assert(reply.body === "Martin")
    }

    scenario("two-way communication") {
      val actor = actorOf[Tester2]
      assert(mandatoryTemplate.requestBody("actor:uuid:%s" format actor.uuid, "Martin") === "Hello Martin")
    }

    scenario("two-way communication with timeout") {
      val actor = actorOf(Props[Tester3].withTimeout(Timeout(1)))
      intercept[RuntimeCamelException] {
        mandatoryTemplate.requestBody("actor:uuid:%s?blocking=true" format actor.uuid, "Martin")
      }
    }

    scenario("two-way communication via a custom route with failure response") {
      mockEndpoint.expectedBodiesReceived("whatever")
      mandatoryTemplate.requestBody("direct:failure-test-1", "whatever")
      mockEndpoint.assertIsSatisfied
    }

    scenario("two-way communication via a custom route with exception") {
      mockEndpoint.expectedBodiesReceived("whatever")
      mandatoryTemplate.requestBody("direct:failure-test-2", "whatever")
      mockEndpoint.assertIsSatisfied
    }
  }

  feature("Communicate with an actor via an actor:id endpoint") {
    import CamelContextManager.mandatoryTemplate

    scenario("one-way communication") {
      val actor = actorOf[Tester1]
      val latch = (actor ? SetExpectedMessageCount(1)).as[CountDownLatch].get
      mandatoryTemplate.sendBody("actor:%s" format actor.address, "Martin")
      assert(latch.await(5000, TimeUnit.MILLISECONDS))
      val reply = (actor ? GetRetainedMessage).get.asInstanceOf[Message]
      assert(reply.body === "Martin")
    }

    scenario("two-way communication") {
      val actor = actorOf[Tester2]
      assert(mandatoryTemplate.requestBody("actor:%s" format actor.address, "Martin") === "Hello Martin")
    }

    scenario("two-way communication via a custom route") {
      val actor = actorOf[CustomIdActor]("custom-id")
      assert(mandatoryTemplate.requestBody("direct:custom-id-test-1", "Martin") === "Received Martin")
      assert(mandatoryTemplate.requestBody("direct:custom-id-test-2", "Martin") === "Received Martin")
    }
  }

  private def mockEndpoint = CamelContextManager.mandatoryContext.getEndpoint("mock:mock", classOf[MockEndpoint])
}

object ActorComponentFeatureTest {
  class CustomIdActor extends Actor {
    protected def receive = {
      case msg: Message ⇒ reply("Received %s" format msg.body)
    }
  }

  class FailWithMessage extends Actor {
    protected def receive = {
      case msg: Message ⇒ reply(Failure(new Exception("test")))
    }
  }

  class FailWithException extends Actor {
    protected def receive = {
      case msg: Message ⇒ throw new Exception("test")
    }
  }

  class TestRoute extends RouteBuilder {
    val failWithMessage = actorOf[FailWithMessage]
    val failWithException = actorOf[FailWithException]
    def configure {
      from("direct:custom-id-test-1").to("actor:custom-id")
      from("direct:custom-id-test-2").to("actor:id:custom-id")
      from("direct:failure-test-1")
        .onException(classOf[Exception]).to("mock:mock").handled(true).end
        .to("actor:uuid:%s" format failWithMessage.uuid)
      from("direct:failure-test-2")
        .onException(classOf[Exception]).to("mock:mock").handled(true).end
        .to("actor:uuid:%s?blocking=true" format failWithException.uuid)
    }
  }
}