/**
 * 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.
 */
/**
 * Check that the licenses of our 3rd parties are in our acceptedLicenses list.
 *
 * run it with "gradle checkLicenses"
 *
 * To add new accepted licenses you need to update this script.
 * Some products may be available with multiple licenses. In this case you must update
 *  this script to add it in the downloadLicenses#licenses.
 */

// Some parts of this code comes from Zipkin/https://github.com/openzipkin/zipkin/pull/852
// Zipkin itself is under Apache License.

/**
 * The lists of the license we accept.
 */
ext.acceptedLicenses = [
  'Apache License, Version 2.0',
  'Bouncy Castle Licence',
  'CC0',
  'The 2-Clause BSD License',
  'The 3-Clause BSD License',
  'Common Development and Distribution License 1.0',
  'Eclipse Distribution License - v 1.0',
  'Eclipse Public License 1.0',
  'Eclipse Public License 2.0',
  'The MIT License',
  'Unicode/ICU License',
]*.toLowerCase()

/**
 * This is the configuration we need for our licenses plugin: 'com.github.hierynomus.license'
 * This plugin generates a list of dependencies.
 */
downloadLicenses {
  includeProjectDependencies = true
  reportByDependency = false
  reportByLicenseType = true
  dependencyConfiguration = 'compileClasspath'

  ext.apache2 = license(
    'Apache License, Version 2.0',
    'http://opensource.org/licenses/Apache-2.0')
  ext.bsd = license(
    'The 2-Clause BSD License',
    'https://opensource.org/licenses/BSD-2-Clause')
  ext.bsd3Clause = license(
    'The 3-Clause BSD License',
    'http://opensource.org/licenses/BSD-3-Clause')
  ext.cddl1 = license(
    'Common Development and Distribution License 1.0',
    'https://opensource.org/licenses/CDDL-1.0')
  ext.edl1 = license(
    'Eclipse Distribution License - v 1.0',
    'http://www.eclipse.org/org/documents/edl-v10.html')
  ext.epl1 = license(
    'Eclipse Public License 1.0',
    'https://opensource.org/licenses/EPL-1.0')
  ext.epl2 = license(
    'Eclipse Public License 2.0',
    'https://opensource.org/licenses/EPL-2.0')
  ext.mit = license(
    'The MIT License',
    'https://opensource.org/licenses/MIT')

  aliases = [
    (apache2): [
      'Apache',
      'Apache 2',
      'Apache 2.0',
      'Apache-2.0',
      'Apache License',
      'Apache License 2.0',
      'Apache License Version 2.0',
      'Apache License, Version 2.0',
      'Apache Software Licenses',
      'Apache v2',
      'ASL, Version 2',
      'The Apache License, Version 2.0',
      'The Apache Software License, Version 2.0',
      'The Apache Software License, version 2.0'
    ],
    (bsd): [
      'Berkeley Software Distribution (BSD) License',
      'BSD',
      'BSD licence',
      'BSD Licence',
      'BSD License',
      'New BSD License',
      'The BSD Licence',
      'The BSD License',
      'BSD 2-Clause license',
    ],
    (bsd3Clause): [
      'BSD 3-Clause',
      'BSD 3-Clause "New" or "Revised" License (BSD-3-Clause)',
      'The 3-Clause BSD License',
      'The BSD 3-Clause License',
    ],
    (cddl1): [
      'CDDL-1.0',
      'Common Development and Distribution License',
      'Common Development and Distribution License 1.0',
      'Dual license consisting of the CDDL v1.1 and GPL v2',
    ],
    (edl1): [
      'Eclipse Distribution License - v 1.0',
    ],
    (epl1): [
      'Eclipse Public License - v 1.0',
    ],
    (epl2): [
      'Eclipse Public License v2.0',
      'Eclipse Public License - v 2.0',
    ],
    (mit): [
      'MIT license',
      'MIT License',
    ],
  ]

  licenses = [
    (group('tuweni')): apache2,
    (group('org.jboss.spec.javax.transaction')): cddl1,
    (group('org.rocksdb')): apache2,
    // https://checkerframework.org/manual/#license
    // The more permissive MIT License applies to code that you might want
    // to include in your own program, such as the annotations and run-time utility classes.
    (group('org.checkerframework')): mit
  ]
}


task checkLicenses {
  description "Verify that all dependencies use white-listed licenses."
  dependsOn ':downloadLicenses'

  def bads = ""
  doLast {
    def xml = new XmlParser().parse("$rootProject.buildDir/reports/license/license-dependency.xml")
    xml.each { license ->
      if (!acceptedLicenses.contains((license.@name).toLowerCase())) {
        def depStrings = []
        license.dependency.each { depStrings << it.text() }
        bads = bads + depStrings + " =>  -${license.@name}- \n"
      }
    }
    if (bads != "") {
      throw new GradleException("Some 3rd parties are using licenses not in our accepted licenses list:\n" +
      bads +
      "If it's a license acceptable for us, add it in the file check-licenses.gradle.\n" +
      "Be careful, some 3rd parties may accept multiple licenses.\n" +
      "In this case, select the one you want to use by changing downloadLicenses.licenses\n"
      )
    }
  }
}
check.dependsOn checkLicenses