/*
 * 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 java.util.Locale
import org.elasticsearch.gradle.Version
import org.elasticsearch.gradle.VersionProperties
import org.elasticsearch.gradle.test.RestIntegTestTask

apply plugin: 'elasticsearch.standalone-test'

// This is a top level task which we will add dependencies to below.
// It is a single task that can be used to backcompat tests against all versions.
task bwcTest {
    description = 'Runs backwards compatibility tests.'
    group = 'verification'
}

for (Version version : versionCollection.versionsIndexCompatibleWithCurrent) {
    String baseName = "v${version}"
    Task oldClusterTest = tasks.create(name: "${baseName}#oldClusterTest", type: RestIntegTestTask) {
        mustRunAfter(precommit)
    }
    configure(extensions.findByName("${baseName}#oldClusterTestCluster")) {
        distribution = 'zip'
        bwcVersion = version
        numBwcNodes = 1
        numNodes = 1
        clusterName = 'verify-version-constants'
        if (version.onOrAfter('5.3.0')) {
            setting 'http.content_type.required', 'true'
        }
    }

    Task versionBwcTest = tasks.create(name: "${baseName}#bwcTest") {
        dependsOn = [oldClusterTest]
    }

    bwcTest.dependsOn(versionBwcTest)
}

test.enabled = false

task integTest {
    for (final def version : versionCollection.basicIntegrationTestVersions) {
        dependsOn "v${version}#bwcTest"
    }
}

task verifyDocsLuceneVersion {
  doFirst {
    File docsVersionsFile = rootProject.file('docs/Versions.asciidoc')
    List<String> versionLines = docsVersionsFile.readLines('UTF-8')
    String docsLuceneVersion = null
    for (String line : versionLines) {
      if (line.startsWith(':lucene_version:')) {
        docsLuceneVersion = line.split()[1]
      }
    }
    if (docsLuceneVersion == null) {
      throw new GradleException('Could not find lucene version in docs version file')
    }
    String expectedLuceneVersion = VersionProperties.lucene
    if (expectedLuceneVersion.contains('-snapshot-')) {
      expectedLuceneVersion = expectedLuceneVersion.substring(0, expectedLuceneVersion.lastIndexOf('-'))
      expectedLuceneVersion = expectedLuceneVersion.toUpperCase(Locale.ROOT)
    }
    if (docsLuceneVersion != expectedLuceneVersion) {
      throw new GradleException("Lucene version in docs [${docsLuceneVersion}] does not match version.properties [${expectedLuceneVersion}]")
    }
  }
}

check.dependsOn integTest, verifyDocsLuceneVersion