/*
 * 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.
 */

import sbt.Keys._
import sbt._

/**
 * Generate LICENSE and NOTICE files into jar META-INF dir
 */
object AddMetaInfLicenseFiles extends AutoPlugin {

  private lazy val baseDir = LocalRootProject / baseDirectory

  override lazy val projectSettings = Seq(
    Compile / resourceGenerators += Def.task {
      val log = streams.value.log
      log.info(s"generate META-INF/LICENSE for project ${name.value}")
      val licenseFile = (Compile / resourceManaged).value / "META-INF" / "LICENSE"
      IO.write(licenseFile, license)
      log.info(s"generate META-INF/NOTICE for project ${name.value}")
      val noticeFile = (Compile / resourceManaged).value / "META-INF" / "NOTICE"
      IO.write(noticeFile, notice)
      Seq(licenseFile, noticeFile)
    }.taskValue
  )

  override def trigger = allRequirements

  val license =
    """
      |                                 Apache License
      |                           Version 2.0, January 2004
      |                        http://www.apache.org/licenses/
      |
      |   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
      |
      |   1. Definitions.
      |
      |      "License" shall mean the terms and conditions for use, reproduction,
      |      and distribution as defined by Sections 1 through 9 of this document.
      |
      |      "Licensor" shall mean the copyright owner or entity authorized by
      |      the copyright owner that is granting the License.
      |
      |      "Legal Entity" shall mean the union of the acting entity and all
      |      other entities that control, are controlled by, or are under common
      |      control with that entity. For the purposes of this definition,
      |      "control" means (i) the power, direct or indirect, to cause the
      |      direction or management of such entity, whether by contract or
      |      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      |      outstanding shares, or (iii) beneficial ownership of such entity.
      |
      |      "You" (or "Your") shall mean an individual or Legal Entity
      |      exercising permissions granted by this License.
      |
      |      "Source" form shall mean the preferred form for making modifications,
      |      including but not limited to software source code, documentation
      |      source, and configuration files.
      |
      |      "Object" form shall mean any form resulting from mechanical
      |      transformation or translation of a Source form, including but
      |      not limited to compiled object code, generated documentation,
      |      and conversions to other media types.
      |
      |      "Work" shall mean the work of authorship, whether in Source or
      |      Object form, made available under the License, as indicated by a
      |      copyright notice that is included in or attached to the work
      |      (an example is provided in the Appendix below).
      |
      |      "Derivative Works" shall mean any work, whether in Source or Object
      |      form, that is based on (or derived from) the Work and for which the
      |      editorial revisions, annotations, elaborations, or other modifications
      |      represent, as a whole, an original work of authorship. For the purposes
      |      of this License, Derivative Works shall not include works that remain
      |      separable from, or merely link (or bind by name) to the interfaces of,
      |      the Work and Derivative Works thereof.
      |
      |      "Contribution" shall mean any work of authorship, including
      |      the original version of the Work and any modifications or additions
      |      to that Work or Derivative Works thereof, that is intentionally
      |      submitted to Licensor for inclusion in the Work by the copyright owner
      |      or by an individual or Legal Entity authorized to submit on behalf of
      |      the copyright owner. For the purposes of this definition, "submitted"
      |      means any form of electronic, verbal, or written communication sent
      |      to the Licensor or its representatives, including but not limited to
      |      communication on electronic mailing lists, source code control systems,
      |      and issue tracking systems that are managed by, or on behalf of, the
      |      Licensor for the purpose of discussing and improving the Work, but
      |      excluding communication that is conspicuously marked or otherwise
      |      designated in writing by the copyright owner as "Not a Contribution."
      |
      |      "Contributor" shall mean Licensor and any individual or Legal Entity
      |      on behalf of whom a Contribution has been received by Licensor and
      |      subsequently incorporated within the Work.
      |
      |   2. Grant of Copyright License. Subject to the terms and conditions of
      |      this License, each Contributor hereby grants to You a perpetual,
      |      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      |      copyright license to reproduce, prepare Derivative Works of,
      |      publicly display, publicly perform, sublicense, and distribute the
      |      Work and such Derivative Works in Source or Object form.
      |
      |   3. Grant of Patent License. Subject to the terms and conditions of
      |      this License, each Contributor hereby grants to You a perpetual,
      |      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      |      (except as stated in this section) patent license to make, have made,
      |      use, offer to sell, sell, import, and otherwise transfer the Work,
      |      where such license applies only to those patent claims licensable
      |      by such Contributor that are necessarily infringed by their
      |      Contribution(s) alone or by combination of their Contribution(s)
      |      with the Work to which such Contribution(s) was submitted. If You
      |      institute patent litigation against any entity (including a
      |      cross-claim or counterclaim in a lawsuit) alleging that the Work
      |      or a Contribution incorporated within the Work constitutes direct
      |      or contributory patent infringement, then any patent licenses
      |      granted to You under this License for that Work shall terminate
      |      as of the date such litigation is filed.
      |
      |   4. Redistribution. You may reproduce and distribute copies of the
      |      Work or Derivative Works thereof in any medium, with or without
      |      modifications, and in Source or Object form, provided that You
      |      meet the following conditions:
      |
      |      (a) You must give any other recipients of the Work or
      |          Derivative Works a copy of this License; and
      |
      |      (b) You must cause any modified files to carry prominent notices
      |          stating that You changed the files; and
      |
      |      (c) You must retain, in the Source form of any Derivative Works
      |          that You distribute, all copyright, patent, trademark, and
      |          attribution notices from the Source form of the Work,
      |          excluding those notices that do not pertain to any part of
      |          the Derivative Works; and
      |
      |      (d) If the Work includes a "NOTICE" text file as part of its
      |          distribution, then any Derivative Works that You distribute must
      |          include a readable copy of the attribution notices contained
      |          within such NOTICE file, excluding those notices that do not
      |          pertain to any part of the Derivative Works, in at least one
      |          of the following places: within a NOTICE text file distributed
      |          as part of the Derivative Works; within the Source form or
      |          documentation, if provided along with the Derivative Works; or,
      |          within a display generated by the Derivative Works, if and
      |          wherever such third-party notices normally appear. The contents
      |          of the NOTICE file are for informational purposes only and
      |          do not modify the License. You may add Your own attribution
      |          notices within Derivative Works that You distribute, alongside
      |          or as an addendum to the NOTICE text from the Work, provided
      |          that such additional attribution notices cannot be construed
      |          as modifying the License.
      |
      |      You may add Your own copyright statement to Your modifications and
      |      may provide additional or different license terms and conditions
      |      for use, reproduction, or distribution of Your modifications, or
      |      for any such Derivative Works as a whole, provided Your use,
      |      reproduction, and distribution of the Work otherwise complies with
      |      the conditions stated in this License.
      |
      |   5. Submission of Contributions. Unless You explicitly state otherwise,
      |      any Contribution intentionally submitted for inclusion in the Work
      |      by You to the Licensor shall be under the terms and conditions of
      |      this License, without any additional terms or conditions.
      |      Notwithstanding the above, nothing herein shall supersede or modify
      |      the terms of any separate license agreement you may have executed
      |      with Licensor regarding such Contributions.
      |
      |   6. Trademarks. This License does not grant permission to use the trade
      |      names, trademarks, service marks, or product names of the Licensor,
      |      except as required for reasonable and customary use in describing the
      |      origin of the Work and reproducing the content of the NOTICE file.
      |
      |   7. Disclaimer of Warranty. Unless required by applicable law or
      |      agreed to in writing, Licensor provides the Work (and each
      |      Contributor provides its Contributions) on an "AS IS" BASIS,
      |      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      |      implied, including, without limitation, any warranties or conditions
      |      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      |      PARTICULAR PURPOSE. You are solely responsible for determining the
      |      appropriateness of using or redistributing the Work and assume any
      |      risks associated with Your exercise of permissions under this License.
      |
      |   8. Limitation of Liability. In no event and under no legal theory,
      |      whether in tort (including negligence), contract, or otherwise,
      |      unless required by applicable law (such as deliberate and grossly
      |      negligent acts) or agreed to in writing, shall any Contributor be
      |      liable to You for damages, including any direct, indirect, special,
      |      incidental, or consequential damages of any character arising as a
      |      result of this License or out of the use or inability to use the
      |      Work (including but not limited to damages for loss of goodwill,
      |      work stoppage, computer failure or malfunction, or any and all
      |      other commercial damages or losses), even if such Contributor
      |      has been advised of the possibility of such damages.
      |
      |   9. Accepting Warranty or Additional Liability. While redistributing
      |      the Work or Derivative Works thereof, You may choose to offer,
      |      and charge a fee for, acceptance of support, warranty, indemnity,
      |      or other liability obligations and/or rights consistent with this
      |      License. However, in accepting such obligations, You may act only
      |      on Your own behalf and on Your sole responsibility, not on behalf
      |      of any other Contributor, and only if You agree to indemnify,
      |      defend, and hold each Contributor harmless for any liability
      |      incurred by, or claims asserted against, such Contributor by reason
      |      of your accepting any such warranty or additional liability.
      |
      |   END OF TERMS AND CONDITIONS
      |
      |   APPENDIX: How to apply the Apache License to your work.
      |
      |      To apply the Apache License to your work, attach the following
      |      boilerplate notice, with the fields enclosed by brackets "[]"
      |      replaced with your own identifying information. (Don't include
      |      the brackets!)  The text should be enclosed in the appropriate
      |      comment syntax for the file format. We also recommend that a
      |      file or class name and description of purpose be included on the
      |      same "printed page" as the copyright notice for easier
      |      identification within third-party archives.
      |
      |   Copyright [yyyy] [name of copyright owner]
      |
      |   Licensed 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.
      |""".stripMargin

  val notice =
    """
      |Apache Celeborn
      |Copyright 2022-2024 The Apache Software Foundation.
      |
      |This product includes software developed at
      |The Apache Software Foundation (http://www.apache.org/).
      |""".stripMargin
}
