/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package kafka.api

import java.time.Duration
import org.apache.kafka.clients.consumer.{CloseOptions, Consumer, ConsumerConfig, KafkaConsumer, KafkaShareConsumer, ShareConsumer}
import kafka.utils.TestUtils
import kafka.utils.Implicits._

import java.util
import java.util.{Optional, Properties, UUID}
import org.apache.kafka.clients.producer.{KafkaProducer, ProducerConfig}
import kafka.server.KafkaConfig
import kafka.integration.KafkaServerTestHarness
import kafka.security.JaasTestUtils
import org.apache.kafka.clients.admin.{Admin, AdminClientConfig}
import org.apache.kafka.clients.consumer.internals.{AsyncKafkaConsumer, StreamsRebalanceData, StreamsRebalanceListener}
import org.apache.kafka.common.network.{ConnectionMode, ListenerName}
import org.apache.kafka.common.serialization.{ByteArrayDeserializer, ByteArraySerializer, Deserializer, Serializer}
import org.apache.kafka.common.utils.Utils
import org.apache.kafka.network.SocketServerConfigs
import org.apache.kafka.raft.{KRaftConfigs, MetadataLogConfig}
import org.apache.kafka.server.config.ReplicationConfigs
import org.junit.jupiter.api.{AfterEach, BeforeEach, TestInfo}

import scala.collection.mutable
import scala.collection.Seq
import scala.jdk.CollectionConverters._
import scala.jdk.javaapi.OptionConverters

/**
 * A helper class for writing integration tests that involve producers, consumers, and servers
 */
abstract class IntegrationTestHarness extends KafkaServerTestHarness {
  protected def brokerCount: Int
  protected def logDirCount: Int = 1

  val producerConfig = new Properties
  val consumerConfig = new Properties
  val shareConsumerConfig = new Properties
  val streamsConsumerConfig = new Properties
  val adminClientConfig = new Properties
  val superuserClientConfig = new Properties
  val serverConfig = new Properties
  val controllerConfig = new Properties

  private val consumers = mutable.Buffer[Consumer[_, _]]()
  private val shareConsumers = mutable.Buffer[ShareConsumer[_, _]]()
  private val streamsConsumers = mutable.Buffer[Consumer[_, _]]()
  private val producers = mutable.Buffer[KafkaProducer[_, _]]()
  private val adminClients = mutable.Buffer[Admin]()

  protected def interBrokerListenerName: ListenerName = listenerName

  protected def modifyConfigs(props: Seq[Properties]): Unit = {
    props.foreach(_ ++= serverConfig)
  }

  override def generateConfigs: Seq[KafkaConfig] = {
    val cfgs = TestUtils.createBrokerConfigs(brokerCount, interBrokerSecurityProtocol = Some(securityProtocol),
      trustStoreFile = trustStoreFile, saslProperties = serverSaslProperties, logDirCount = logDirCount)
    configureListeners(cfgs)
    modifyConfigs(cfgs)
    cfgs.foreach(_.setProperty(MetadataLogConfig.METADATA_LOG_DIR_CONFIG, TestUtils.tempDir().getAbsolutePath))
    insertControllerListenersIfNeeded(cfgs)
    cfgs.map(KafkaConfig.fromProps)
  }

  override protected def kraftControllerConfigs(testInfo: TestInfo): Seq[Properties] = {
    Seq(controllerConfig)
  }

  protected def configureListeners(props: Seq[Properties]): Unit = {
    props.foreach { config =>
      config.remove(ReplicationConfigs.INTER_BROKER_SECURITY_PROTOCOL_CONFIG)
      config.setProperty(ReplicationConfigs.INTER_BROKER_LISTENER_NAME_CONFIG, interBrokerListenerName.value)

      val listenerNames = Set(listenerName, interBrokerListenerName)
      val listeners = listenerNames.map(listenerName => s"${listenerName.value}://localhost:${TestUtils.RandomPort}").mkString(",")
      val listenerSecurityMap = listenerNames.map(listenerName => s"${listenerName.value}:${securityProtocol.name}").mkString(",")

      config.setProperty(SocketServerConfigs.LISTENERS_CONFIG, listeners)
      config.setProperty(SocketServerConfigs.ADVERTISED_LISTENERS_CONFIG, listeners)
      config.setProperty(SocketServerConfigs.LISTENER_SECURITY_PROTOCOL_MAP_CONFIG, listenerSecurityMap)
    }
  }

  private def insertControllerListenersIfNeeded(props: Seq[Properties]): Unit = {
    props.foreach { config =>
      // Add a security protocol for the controller endpoints, if one is not already set.
      val securityPairs = config.getProperty(SocketServerConfigs.LISTENER_SECURITY_PROTOCOL_MAP_CONFIG, "").split(",")
      val toAdd = config.getProperty(KRaftConfigs.CONTROLLER_LISTENER_NAMES_CONFIG, "").split(",").filter(
        e => !securityPairs.exists(_.startsWith(s"$e:")))
      if (toAdd.nonEmpty) {
        config.setProperty(SocketServerConfigs.LISTENER_SECURITY_PROTOCOL_MAP_CONFIG, (securityPairs ++
          toAdd.map(e => s"$e:${controllerListenerSecurityProtocol.toString}")).mkString(","))
      }
    }
  }

  @BeforeEach
  override def setUp(testInfo: TestInfo): Unit = {
    doSetup(testInfo, createOffsetsTopic = true)
  }

  /*
   * The superuser by default is set up the same as the admin.
   * Some tests need a separate principal for superuser operations.
   * These tests may need to override the config before creating the offset topic.
   */
  protected def doSuperuserSetup(testInfo: TestInfo): Unit = {
    superuserClientConfig.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
  }

  def doSetup(testInfo: TestInfo,
              createOffsetsTopic: Boolean): Unit = {
    // Generate client security properties before starting the brokers in case certs are needed
    producerConfig ++= clientSecurityProps("producer")
    consumerConfig ++= clientSecurityProps("consumer")
    shareConsumerConfig ++= clientSecurityProps("shareConsumer")
    adminClientConfig ++= clientSecurityProps("adminClient")
    superuserClientConfig ++= superuserSecurityProps("superuserClient")

    super.setUp(testInfo)

    producerConfig.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
    producerConfig.putIfAbsent(ProducerConfig.ACKS_CONFIG, "-1")
    producerConfig.putIfAbsent(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, classOf[ByteArraySerializer].getName)
    producerConfig.putIfAbsent(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, classOf[ByteArraySerializer].getName)

    consumerConfig.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
    consumerConfig.putIfAbsent(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest")
    consumerConfig.putIfAbsent(ConsumerConfig.GROUP_ID_CONFIG, "group")
    consumerConfig.putIfAbsent(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    consumerConfig.putIfAbsent(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    maybeGroupProtocolSpecified().map(groupProtocol => consumerConfig.putIfAbsent(ConsumerConfig.GROUP_PROTOCOL_CONFIG, groupProtocol.name))

    shareConsumerConfig.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
    shareConsumerConfig.putIfAbsent(ConsumerConfig.GROUP_ID_CONFIG, "group")
    shareConsumerConfig.putIfAbsent(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    shareConsumerConfig.putIfAbsent(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    
    streamsConsumerConfig.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
    streamsConsumerConfig.putIfAbsent(ConsumerConfig.GROUP_ID_CONFIG, "group")
    streamsConsumerConfig.putIfAbsent(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    streamsConsumerConfig.putIfAbsent(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    
    adminClientConfig.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())

    doSuperuserSetup(testInfo)

    if (createOffsetsTopic) {
      super.createOffsetsTopic(listenerName, superuserClientConfig)
    }
  }

  def clientSecurityProps(certAlias: String): Properties = {
    JaasTestUtils.securityConfigs(ConnectionMode.CLIENT, securityProtocol, OptionConverters.toJava(trustStoreFile), certAlias,
      JaasTestUtils.SSL_CERTIFICATE_CN, OptionConverters.toJava(clientSaslProperties))
  }

  def superuserSecurityProps(certAlias: String): Properties = {
    clientSecurityProps(certAlias)
  }

  def createProducer[K, V](keySerializer: Serializer[K] = new ByteArraySerializer,
                           valueSerializer: Serializer[V] = new ByteArraySerializer,
                           configOverrides: Properties = new Properties): KafkaProducer[K, V] = {
    val props = new Properties
    props ++= producerConfig
    props ++= configOverrides
    val producer = new KafkaProducer[K, V](props, keySerializer, valueSerializer)
    producers += producer
    producer
  }

  def createConsumer[K, V](keyDeserializer: Deserializer[K] = new ByteArrayDeserializer,
                           valueDeserializer: Deserializer[V] = new ByteArrayDeserializer,
                           configOverrides: Properties = new Properties,
                           configsToRemove: List[String] = List()): Consumer[K, V] = {
    if (!consumerConfig.containsKey(ConsumerConfig.GROUP_PROTOCOL_CONFIG))
      throw new IllegalStateException(s"Please specify the group.protocol configuration when creating a KafkaConsumer")

    val props = new Properties
    props ++= consumerConfig
    props ++= configOverrides
    configsToRemove.foreach(props.remove(_))
    val consumer = new KafkaConsumer[K, V](props, keyDeserializer, valueDeserializer)
    consumers += consumer
    consumer
  }

  def createShareConsumer[K, V](keyDeserializer: Deserializer[K] = new ByteArrayDeserializer,
                                valueDeserializer: Deserializer[V] = new ByteArrayDeserializer,
                                configOverrides: Properties = new Properties,
                                configsToRemove: List[String] = List()): ShareConsumer[K, V] = {
    val props = new Properties
    props ++= shareConsumerConfig
    props ++= configOverrides
    configsToRemove.foreach(props.remove(_))
    val shareConsumer = new KafkaShareConsumer[K, V](props, keyDeserializer, valueDeserializer)
    shareConsumers += shareConsumer
    shareConsumer
  }

  def createStreamsConsumer[K, V](keyDeserializer: Deserializer[K] = new ByteArrayDeserializer,
                                valueDeserializer: Deserializer[V] = new ByteArrayDeserializer,
                                configOverrides: Properties = new Properties,
                                configsToRemove: List[String] = List(),
                                streamsRebalanceData: StreamsRebalanceData): AsyncKafkaConsumer[K, V] = {
    val props = new Properties
    props ++= streamsConsumerConfig
    props ++= configOverrides
    configsToRemove.foreach(props.remove(_))
    val streamsConsumer = new AsyncKafkaConsumer[K, V](
      new ConsumerConfig(ConsumerConfig.appendDeserializerToConfig(Utils.propsToMap(props), keyDeserializer, valueDeserializer)),
      keyDeserializer,
      valueDeserializer,
      Optional.of(streamsRebalanceData)
    )
    streamsConsumers += streamsConsumer
    streamsConsumer
  }

  def createStreamsGroup[K, V](configOverrides: Properties = new Properties,
                               configsToRemove: List[String] = List(),
                               inputTopics: Set[String],
                               changelogTopics: Set[String] = Set(),
                               streamsGroupId: String,
                               replicationFactor: Optional[Short] = Optional.empty()): AsyncKafkaConsumer[K, V] = {
    val props = new Properties()
    props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers())
    props.put(ConsumerConfig.GROUP_ID_CONFIG, streamsGroupId)
    props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, "false")
    props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, classOf[ByteArrayDeserializer].getName)
    props ++= configOverrides
    configsToRemove.foreach(props.remove(_))

    val boxed: Optional[java.lang.Short] =
      replicationFactor.map[java.lang.Short](s => java.lang.Short.valueOf(s))
    val streamsRebalanceData = new StreamsRebalanceData(
      UUID.randomUUID(),
      Optional.empty(),
      Optional.empty(),
      util.Map.of(
        "subtopology-0", new StreamsRebalanceData.Subtopology(
          inputTopics.asJava,
          util.Set.of(),
          util.Map.of(),
          changelogTopics.map(c => (c, new StreamsRebalanceData.TopicInfo(Optional.empty(), boxed, util.Map.of()))).toMap.asJava,
          util.Set.of()
        )),
      Map.empty[String, String].asJava
    )

    val consumer = createStreamsConsumer(
      keyDeserializer = new ByteArrayDeserializer().asInstanceOf[Deserializer[K]],
      valueDeserializer = new ByteArrayDeserializer().asInstanceOf[Deserializer[V]],
      configOverrides = props,
      streamsRebalanceData = streamsRebalanceData
    )
    consumer.subscribe(inputTopics.asJava,
      new StreamsRebalanceListener {
        override def onTasksRevoked(tasks: util.Set[StreamsRebalanceData.TaskId]): Unit = ()
        override def onTasksAssigned(assignment: StreamsRebalanceData.Assignment): Unit = ()
        override def onAllTasksLost(): Unit = ()
      })
    consumer
  }

  def createAdminClient(
    listenerName: ListenerName = listenerName,
    configOverrides: Properties = new Properties
  ): Admin = {
    val props = new Properties
    props ++= adminClientConfig
    props ++= configOverrides
    val admin = TestUtils.createAdminClient(brokers, listenerName, props)
    adminClients += admin
    admin
  }

  def createSuperuserAdminClient(
    listenerName: ListenerName = listenerName,
    configOverrides: Properties = new Properties
  ): Admin = {
    val props = new Properties
    props ++= superuserClientConfig
    props ++= configOverrides
    val admin = TestUtils.createAdminClient(brokers, listenerName, props)
    adminClients += admin
    admin
  }

  @AfterEach
  override def tearDown(): Unit = {
    try {
      producers.foreach(_.close(Duration.ZERO))
      consumers.foreach(_.wakeup())
      consumers.foreach(_.close(CloseOptions.timeout(Duration.ZERO)))
      shareConsumers.foreach(_.wakeup())
      shareConsumers.foreach(_.close(Duration.ZERO))
      streamsConsumers.foreach(_.wakeup())
      streamsConsumers.foreach(_.close(CloseOptions.timeout(Duration.ZERO)))
      adminClients.foreach(_.close(Duration.ZERO))

      producers.clear()
      consumers.clear()
      shareConsumers.clear()
      streamsConsumers.clear()
      adminClients.clear()
    } finally {
      super.tearDown()
    }
  }

}
