/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
 */

import org.elasticsearch.gradle.Version
import org.elasticsearch.gradle.info.BuildParams
import org.elasticsearch.gradle.testclusters.RestTestRunnerTask

apply plugin: 'elasticsearch.testclusters'
apply plugin: 'elasticsearch.standalone-test'

tasks.register("bwcTest") {
  description = 'Runs backwards compatibility tests.'
  group = 'verification'
}

dependencies {
  testCompile project(':client:rest-high-level')
}

for (Version bwcVersion : bwcVersions.indexCompatible) {
  String baseName = "v${bwcVersion}"
  String oldClusterName = "${baseName}-old"
  String newClusterName = "${baseName}-new"

  def clusterSettings = { v ->
    return {
      version = v
      numberOfNodes = 2
      setting 'path.repo', "${buildDir}/cluster/shared/repo/${baseName}"
      javaHome = BuildParams.runtimeJavaHome
    }
  }

  testClusters {
    "${oldClusterName}" clusterSettings(bwcVersion.toString())
    "${newClusterName}" clusterSettings(project.version)
  }

  tasks.register("${baseName}#Step1OldClusterTest", RestTestRunnerTask) {
    useCluster testClusters."${oldClusterName}"
    mustRunAfter(precommit)
    doFirst {
      project.delete("${buildDir}/cluster/shared/repo/${baseName}")
    }
    systemProperty 'tests.rest.suite', 'step1'
  }

  tasks.register("${baseName}#Step2NewClusterTest", RestTestRunnerTask) {
    useCluster testClusters."${newClusterName}"
    dependsOn "${baseName}#Step1OldClusterTest"
    systemProperty 'tests.rest.suite', 'step2'
  }

  tasks.register("${baseName}#Step3OldClusterTest", RestTestRunnerTask) {
    useCluster testClusters."${oldClusterName}"
    dependsOn "${baseName}#Step2NewClusterTest"
    systemProperty 'tests.rest.suite', 'step3'
  }

  tasks.register("${baseName}#Step4NewClusterTest", RestTestRunnerTask) {
    useCluster testClusters."${newClusterName}"
    dependsOn "${baseName}#Step3OldClusterTest"
    systemProperty 'tests.rest.suite', 'step4'
  }

  tasks.matching { it.name.startsWith(baseName) && it.name.endsWith("ClusterTest") }.configureEach {
    it.systemProperty 'tests.old_cluster_version', bwcVersion.toString().minus("-SNAPSHOT")
    it.systemProperty 'tests.path.repo', "${buildDir}/cluster/shared/repo/${baseName}"
    def clusterName = it.name.contains("Step2") || it.name.contains("Step4") ? "${newClusterName}" : "${oldClusterName}"
    it.nonInputProperties.systemProperty('tests.rest.cluster', "${-> testClusters."${clusterName}".allHttpSocketURI.join(",")}")
    it.nonInputProperties.systemProperty('tests.clustername', "${-> testClusters."${clusterName}".getName()}")
  }

  if (project.bwc_tests_enabled) {
    bwcTest.dependsOn(
      tasks.register("${baseName}#bwcTest") {
        dependsOn tasks.named("${baseName}#Step4NewClusterTest")
      }
    )
  }
}

task bwcTestSnapshots {
  if (project.bwc_tests_enabled) {
    for (final def version : bwcVersions.unreleasedIndexCompatible) {
      dependsOn "v${version}#bwcTest"
    }
  }
}

check.dependsOn(bwcTestSnapshots)

configurations {
  testArtifacts.extendsFrom testRuntime
}

task testJar(type: Jar) {
  appendix 'test'
  from sourceSets.test.output
}

artifacts {
  testArtifacts testJar
}

test.enabled = false