/*
 * 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.apache.tools.ant.filters.FixCrLfFilter
import org.elasticsearch.gradle.precommit.DependencyLicensesTask
import org.elasticsearch.gradle.MavenFilteringHack

// for deb/rpm
buildscript {
  repositories {
    maven {
      url "https://plugins.gradle.org/m2/"
    }
  }
  dependencies {
    classpath 'com.netflix.nebula:gradle-ospackage-plugin:3.1.0'
  }
}

allprojects {
  project.ext {
    // this is common configuration for distributions, but we also add it here for the license check to use
    deps = project("${projectsPrefix}:core").configurations.runtime.copyRecursive().exclude(module: 'slf4j-api')
  }
}

subprojects {
  /*****************************************************************************
   *                              Maven config                                 *
   *****************************************************************************/
  // note: the group must be correct before applying the nexus plugin, or it will capture the wrong value...
  project.group = "org.elasticsearch.distribution.${project.name}"
  apply plugin: 'com.bmuschko.nexus'
  // we must create our own install task, because it is only added when the java plugin is added
  task install(type: Upload, description: "Installs the 'archives' artifacts into the local Maven repository.", group: 'Upload') {
    configuration = configurations.archives
    MavenRepositoryHandlerConvention repositoriesHandler = (MavenRepositoryHandlerConvention)getRepositories().getConvention().getPlugin(MavenRepositoryHandlerConvention);
    repositoriesHandler.mavenInstaller();
  }

  // TODO: the map needs to be an input of the tasks, so that when it changes, the task will re-run...
  /*****************************************************************************
   *             Properties to expand when copying packaging files             *
   *****************************************************************************/
  project.ext {
    expansions = [
      'project.version': version,
      'project.parent.artifactId': 'distributions',
      // Default values for min/max heap memory allocated to elasticsearch java process
      'packaging.elasticsearch.heap.min': '256m',
      'packaging.elasticsearch.heap.max': '1g',
      'project.build.finalName': "elasticsearch-${version}",
      // Default configuration directory and file to use in bin/plugin script
      'packaging.plugin.default.config.dir': '$ES_HOME/config',
      'packaging.plugin.default.config.file': '$ES_HOME/config/elasticsearch.yml',
      'packaging.env.file': '',
      // TODO: do we really need this marker? the tgz and zip are exactly the same,
      // we should not need to specify twice just to change this
      'packaging.type': 'tar.gz',
    ]

    /*****************************************************************************
     *                   Common files in all distributions                       *
     *****************************************************************************/
    libFiles = copySpec {
      into 'lib'
      from project("${projectsPrefix}:core").jar
      from deps
    }

    configFiles = copySpec {
      from '../src/main/resources/config'
    }

    commonFiles = copySpec {
      // everything except windows files, and config is separate
      from '../src/main/resources'
      exclude 'bin/*.bat'
      exclude 'bin/*.exe'
      exclude 'config/**'
      filesMatching('bin/*') { it.setMode(0755) }
    }
  }
}

/*****************************************************************************
 *                         Zip and tgz configuration                         *
 *****************************************************************************/
configure(subprojects.findAll { it.name == 'zip' || it.name == 'tar' }) {
  project.ext.archivesFiles = copySpec {
    into("elasticsearch-${version}") {
      with libFiles
      into('config') {
        with configFiles
      }
      with copySpec {
        with commonFiles
        from('../src/main/resources') {
          include 'bin/*.bat' 
          filter(FixCrLfFilter, eol: FixCrLfFilter.CrLf.newInstance('crlf'))
        }
        MavenFilteringHack.filter(it, expansions)
      }
      from('../src/main/resources') {
        include 'bin/*.exe' 
      } 
    }
  }
}

/*****************************************************************************
 *                         Deb and rpm configuration                         *
 *****************************************************************************/
// ospackage supports adding empty dirs with directory() to rpm, but not deb...yet
// https://github.com/nebula-plugins/gradle-ospackage-plugin/issues/115
// however, even adding just for rpm doesn't seem to work...
// gradle may also get native support https://issues.gradle.org/browse/GRADLE-1671
// in the meantime, we hack this by copying an empty dir
// TODO: HACK DOES NOT WORK
/*ext.emptyDir = new File(project.buildDir, 'empty') 
Closure emptyDirSpec() {
  return {
    from emptyDir
    addParentDirs false
    createDirectoryEntry true
  }
}
task createEmptyDir << {
  emptyDir.mkdirs()
}
buildRpm.dependsOn createEmptyDir
buildDeb.dependsOn createEmptyDir
*/

/*****************************************************************************
 *                         Deb and rpm configuration                         *
 *****************************************************************************/
configure(subprojects.findAll { it.name == 'zip' || it.name == 'tar' }) {
  apply plugin: 'nebula.ospackage-base'
  ospackage {
    packageName = 'elasticsearch'
    // TODO: '-' is an illegal character in rpm version...redline croaks
    version = '3.0.0'
    into '/usr/share/elasticsearch'
    user 'root'
    permissionGroup 'root'
    with libFiles
    with copySpec {
      with commonFiles
      // TODO: omit LICENSE.txt file on deb??
    }
    into('/etc/elasticsearch') {
      with configFiles
      //into('scripts', emptyDirSpec())
      createDirectoryEntry = true
      includeEmptyDirs = true
    }
    directory('/etc/elasticsearch/scripts')
  }
  if (project.name == 'deb') {
    task buildDeb(type: Deb) {
      dependsOn deps
    }
    artifacts {
      archives buildDeb
    }
  } else if (project.name == 'rpm') {
    task buildRpm(type: Rpm) {
      dependsOn deps
    }
    artifacts {
      archives buildRpm
    }
  }
}

// TODO: dependency checks should really be when building the jar itself, which would remove the need
// for this hackery and instead we can do this inside the BuildPlugin
task check(group: 'Verification', description: 'Runs all checks.') {} // dummy task!
DependencyLicensesTask.configure(project) {
  dependsOn = [deps]
  dependencies = deps
  mapping from: /lucene-.*/, to: 'lucene'
  mapping from: /jackson-.*/, to: 'jackson'
}