################################################################################
#  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.
################################################################################

name: Release Java

on:
  workflow_call:
  workflow_dispatch:

concurrency:
  group: release-java-${{ github.ref }}
  cancel-in-progress: false

permissions:
  actions: read
  contents: read

jobs:
  package:
    name: Package ${{ matrix.lane }}
    if: >-
      github.repository == 'apache/paimon' &&
      startsWith(github.ref, 'refs/tags/') &&
      contains(github.ref_name, '-rc')
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - lane: jdk8
            java_version: 8
          - lane: jdk11
            java_version: 11
          - lane: jdk17
            java_version: 17
    steps:
      - uses: actions/checkout@v6

      - name: Set up JDK ${{ matrix.java_version }}
        uses: actions/setup-java@v5
        with:
          java-version: ${{ matrix.java_version }}
          distribution: temurin
          cache: maven

      - name: Set up Maven
        uses: stCarolas/setup-maven@12eb41b233df95d49b0c11fc1b5bc8312e5d4ce0 # v5.1
        with:
          maven-version: 3.8.8

      - name: Validate release tag and version
        id: release
        shell: bash
        run: |
          set -euo pipefail

          release_version="$(
            mvn -q -DforceStdout help:evaluate \
              -Dexpression=project.version
          )"
          rc_number="${GITHUB_REF_NAME##*-rc}"
          expected_tag="release-${release_version}-rc${rc_number}"

          if [[ ! "${rc_number}" =~ ^[0-9]+$ ]]; then
            echo "RC number must be numeric: ${rc_number}" >&2
            exit 1
          fi
          if [[ "${GITHUB_REF_NAME}" != "${expected_tag}" ]]; then
            echo "Tag ${GITHUB_REF_NAME} does not match Maven version ${release_version}" >&2
            exit 1
          fi
          if [[ "${release_version}" == *-SNAPSHOT ]]; then
            echo "Release version must not contain -SNAPSHOT" >&2
            exit 1
          fi

          echo "version=${release_version}" >> "${GITHUB_OUTPUT}"
          echo "rc_number=${rc_number}" >> "${GITHUB_OUTPUT}"

          java -version
          mvn -version

      - name: Reject SNAPSHOT project versions and dependencies
        shell: bash
        env:
          LANE: ${{ matrix.lane }}
        run: |
          set -euo pipefail

          enforcer_goal="org.apache.maven.plugins:maven-enforcer-plugin:3.6.3:enforce"
          enforcer_rules="requireReleaseVersion,requireReleaseDeps"
          case "${LANE}" in
            jdk8)
              mvn -ntp -B "${enforcer_goal}" \
                -Denforcer.rules="${enforcer_rules}" \
                -Papache-release,docs-and-source,spark3,flink1
              ;;
            jdk11)
              mvn -ntp -B "${enforcer_goal}" \
                -Denforcer.rules="${enforcer_rules}" \
                -Papache-release,docs-and-source,flink2 \
                -pl org.apache.paimon:paimon-flink-2.0,org.apache.paimon:paimon-flink-2.1,org.apache.paimon:paimon-flink-2.2,org.apache.paimon:paimon-flink2-common,org.apache.paimon:paimon-iceberg \
                -am
              ;;
            jdk17)
              mvn -ntp -B "${enforcer_goal}" \
                -Denforcer.rules="${enforcer_rules}" \
                -Papache-release,docs-and-source,spark4 \
                -pl org.apache.paimon:paimon-spark-common_2.13,org.apache.paimon:paimon-spark4-common_2.13,org.apache.paimon:paimon-spark-4.0_2.13,org.apache.paimon:paimon-spark-4.1_2.13 \
                -am
              ;;
            *)
              echo "Unknown Java release lane: ${LANE}" >&2
              exit 1
              ;;
          esac

      - name: Package Java release artifacts
        shell: bash
        env:
          LANE: ${{ matrix.lane }}
          MAVEN_OPTS: -Xmx4096m
          RELEASE_VERSION: ${{ steps.release.outputs.version }}
        run: |
          set -euo pipefail

          mkdir -p release-java
          repository="${RUNNER_TEMP}/paimon-${LANE}-repository"
          alt_repository="local::default::file://${repository}"
          effective_pom="${RUNNER_TEMP}/paimon-${LANE}-effective-pom.xml"
          expected_projects="release-java/${LANE}-expected-projects.txt"
          log="release-java/${LANE}.log"

          capture_expected_projects() {
            mvn -q -ntp -B help:effective-pom \
              -Doutput="${effective_pom}" "$@"
          }

          case "${LANE}" in
            jdk8)
              capture_expected_projects \
                -Papache-release,docs-and-source,spark3,flink1
              mvn clean deploy -ntp -B \
                -Papache-release,docs-and-source,spark3,flink1 \
                -DskipTests -Dgpg.skip=true -Dstyle.color=never \
                -DdeployAtEnd=true \
                -DaltDeploymentRepository="${alt_repository}" \
                2>&1 | tee "${log}"
              ;;
            jdk11)
              capture_expected_projects \
                -Papache-release,docs-and-source,flink2 \
                -pl org.apache.paimon:paimon-flink-2.0,org.apache.paimon:paimon-flink-2.1,org.apache.paimon:paimon-flink-2.2,org.apache.paimon:paimon-flink2-common,org.apache.paimon:paimon-iceberg
              # This install only supplies reactor dependencies for the deploy
              # below. Their Javadocs are built by the owning release lane.
              mvn clean install -ntp -B \
                -Pdocs-and-source,flink2 \
                -DskipTests -Dmaven.javadoc.skip=true \
                -Dstyle.color=never \
                -pl org.apache.paimon:paimon-flink-2.0,org.apache.paimon:paimon-flink-2.1,org.apache.paimon:paimon-flink-2.2,org.apache.paimon:paimon-iceberg \
                -am \
                2>&1 | tee "${log}"
              mvn deploy -ntp -B \
                -Papache-release,docs-and-source,flink2 \
                -DskipTests -Dgpg.skip=true -Dstyle.color=never \
                -DdeployAtEnd=true \
                -DaltDeploymentRepository="${alt_repository}" \
                -pl org.apache.paimon:paimon-flink-2.0,org.apache.paimon:paimon-flink-2.1,org.apache.paimon:paimon-flink-2.2,org.apache.paimon:paimon-flink2-common,org.apache.paimon:paimon-iceberg \
                2>&1 | tee -a "${log}"
              ;;
            jdk17)
              capture_expected_projects \
                -Papache-release,docs-and-source,spark4 \
                -pl org.apache.paimon:paimon-spark-common_2.13,org.apache.paimon:paimon-spark4-common_2.13,org.apache.paimon:paimon-spark-4.0_2.13,org.apache.paimon:paimon-spark-4.1_2.13
              # This install only supplies reactor dependencies for the deploy
              # below. Their Javadocs are built by the owning release lane.
              mvn clean install -ntp -B \
                -Pdocs-and-source,spark4 \
                -DskipTests -Dmaven.javadoc.skip=true \
                -Dstyle.color=never \
                -pl paimon-spark/paimon-spark-4.0,paimon-spark/paimon-spark-4.1 \
                -am \
                2>&1 | tee "${log}"
              mvn deploy -ntp -B \
                -Papache-release,docs-and-source,spark4 \
                -DskipTests -Dgpg.skip=true -Dstyle.color=never \
                -DdeployAtEnd=true \
                -DaltDeploymentRepository="${alt_repository}" \
                -pl org.apache.paimon:paimon-spark-common_2.13,org.apache.paimon:paimon-spark4-common_2.13,org.apache.paimon:paimon-spark-4.0_2.13,org.apache.paimon:paimon-spark-4.1_2.13 \
                2>&1 | tee -a "${log}"
              ;;
            *)
              echo "Unknown Java release lane: ${LANE}" >&2
              exit 1
              ;;
          esac

          python3 - \
            "${effective_pom}" "${expected_projects}" \
            "${RELEASE_VERSION}" <<'PY'
          import sys
          import xml.etree.ElementTree as ET

          effective_pom, output, release_version = sys.argv[1:]
          root = ET.parse(effective_pom).getroot()
          projects = list(root) if root.tag == "projects" else [root]
          namespace = "{http://maven.apache.org/POM/4.0.0}"
          expected = []
          for project in projects:
              def required(name):
                  element = project.find(namespace + name)
                  if element is None or not element.text:
                      raise ValueError("Effective POM is missing " + name)
                  return element.text.strip()

              deploy_skipped = False
              plugins = project.findall(
                  "./%sbuild/%splugins/%splugin"
                  % (namespace, namespace, namespace)
              )
              for plugin in plugins:
                  artifact = plugin.find(namespace + "artifactId")
                  if artifact is None or artifact.text != "maven-deploy-plugin":
                      continue
                  skip = plugin.find(
                      "./%sconfiguration/%sskip" % (namespace, namespace)
                  )
                  if (
                      skip is not None
                      and skip.text
                      and skip.text.strip().lower() == "true"
                  ):
                      deploy_skipped = True
                      break
              if deploy_skipped:
                  continue

              group_id = required("groupId")
              artifact_id = required("artifactId")
              version = required("version")
              packaging_element = project.find(namespace + "packaging")
              packaging = (
                  packaging_element.text.strip()
                  if packaging_element is not None and packaging_element.text
                  else "jar"
              )
              if group_id != "org.apache.paimon":
                  raise ValueError("Unexpected release groupId: " + group_id)
              if version != release_version:
                  raise ValueError(
                      "Unexpected project version for %s: %s"
                      % (artifact_id, version)
                  )
              if packaging not in ("jar", "pom"):
                  raise ValueError(
                      "Unsupported release packaging for %s: %s"
                      % (artifact_id, packaging)
                  )
              expected.append((group_id, artifact_id, version, packaging))

          if not expected:
              raise ValueError("Effective POM contains no release projects")
          if len(expected) != len(set(expected)):
              raise ValueError("Effective POM contains duplicate projects")
          with open(output, "w", encoding="utf-8") as result:
              for project in sorted(expected):
                  result.write("\t".join(project) + "\n")
          PY

          while IFS=$'\t' read -r group_id artifact_id version packaging; do
            artifact_directory="${repository}/${group_id//.//}/${artifact_id}/${version}"
            artifact_base="${artifact_directory}/${artifact_id}-${version}"
            if [[ ! -f "${artifact_base}.pom" ]]; then
              echo "Missing release POM: ${artifact_base}.pom" >&2
              exit 1
            fi
            if [[ "${packaging}" == "jar" ]]; then
              for classifier in '' '-sources'; do
                if [[ ! -f "${artifact_base}${classifier}.jar" ]]; then
                  echo "Missing release JAR: ${artifact_base}${classifier}.jar" >&2
                  exit 1
                fi
              done
              if [[ ! -f "${artifact_base}-javadoc.jar" ]]; then
                echo "No Javadoc JAR was produced for ${group_id}:${artifact_id}"
              fi
            fi
          done < "${expected_projects}"

          unexpected_artifact="$(
            find "${repository}" -type f \
              \( -name '*.jar' -o -name '*.pom' \) \
              ! -path "*/${RELEASE_VERSION}/*" -print -quit
          )"
          if [[ -n "${unexpected_artifact}" ]]; then
            echo "Artifact is outside the release version: ${unexpected_artifact}" >&2
            exit 1
          fi

          files="${GITHUB_WORKSPACE}/release-java/${LANE}-files.txt"
          (
            cd "${repository}"
            find . -type f | LC_ALL=C sort > "${files}"
          )
          if [[ ! -s "${files}" ]] ||
             ! grep -q '\.pom$' "${files}" ||
             ! grep -q '\.jar$' "${files}"; then
            echo "Incomplete Maven repository image for ${LANE}" >&2
            exit 1
          fi
          if grep -q '\.asc$' "${files}"; then
            echo "Unsigned repository image unexpectedly contains signatures" >&2
            exit 1
          fi

          (
            cd "${repository}"
            while IFS= read -r artifact; do
              sha512sum "${artifact}"
            done < "${files}"
          ) > "release-java/${LANE}-sha512.txt"

          tar -czf "release-java/${LANE}-repository.tar.gz" \
            -C "${repository}" .
          (
            cd release-java
            sha512sum "${LANE}-repository.tar.gz" \
              > "${LANE}-repository.tar.gz.sha512"
          )

          {
            echo "lane=${LANE}"
            echo "jdk=${{ matrix.java_version }}"
            echo "version=${{ steps.release.outputs.version }}"
            echo "rc=${{ steps.release.outputs.rc_number }}"
            echo "commit=${GITHUB_SHA}"
            echo "signed=false"
            echo "staged=false"
            echo "artifact_source=maven-file-repository"
          } > "release-java/${LANE}-manifest.txt"

      - name: Upload Java repository lane
        uses: actions/upload-artifact@v6
        with:
          name: java-repository-${{ matrix.lane }}
          path: release-java/
          if-no-files-found: error
          retention-days: 1

  combine:
    name: Combine Java repository
    needs: package
    runs-on: ubuntu-latest
    steps:
      - uses: actions/download-artifact@v6
        with:
          pattern: java-repository-*
          path: release-java/lanes
          merge-multiple: true

      - name: Merge repository lanes
        shell: bash
        run: |
          set -euo pipefail

          mkdir -p release-java/final/evidence
          combined="${RUNNER_TEMP}/paimon-maven-repository"
          mkdir -p "${combined}"

          for lane in jdk8 jdk11 jdk17; do
            archive="release-java/lanes/${lane}-repository.tar.gz"
            checksum="release-java/lanes/${lane}-repository.tar.gz.sha512"
            test -f "${archive}"
            test -f "${checksum}"
            (
              cd release-java/lanes
              sha512sum -c "${lane}-repository.tar.gz.sha512"
            )

            candidate="${RUNNER_TEMP}/paimon-${lane}-candidate"
            mkdir -p "${candidate}"
            tar -xzf "${archive}" -C "${candidate}"
            while IFS= read -r source; do
              relative="${source#"${candidate}/"}"
              target="${combined}/${relative}"
              if [[ -f "${target}" ]]; then
                if ! cmp -s "${source}" "${target}"; then
                  echo "Conflicting repository file from ${lane}: ${relative}" >&2
                  exit 1
                fi
              else
                mkdir -p "$(dirname "${target}")"
                cp -p "${source}" "${target}"
              fi
            done < <(find "${candidate}" -type f | LC_ALL=C sort)

            cp "release-java/lanes/${lane}-manifest.txt" \
              "release-java/final/evidence/"
            cp "release-java/lanes/${lane}.log" \
              "release-java/final/evidence/"
            cp "release-java/lanes/${lane}-expected-projects.txt" \
              "release-java/final/evidence/"
          done

          version="$(
            sed -n 's/^version=//p' \
              release-java/lanes/jdk8-manifest.txt
          )"
          rc_number="$(
            sed -n 's/^rc=//p' \
              release-java/lanes/jdk8-manifest.txt
          )"
          if [[ -z "${version}" ]]; then
            echo "Missing release version from JDK 8 manifest" >&2
            exit 1
          fi
          if [[ -z "${rc_number}" ]]; then
            echo "Missing RC number from JDK 8 manifest" >&2
            exit 1
          fi
          for lane in jdk8 jdk11 jdk17; do
            expected_jdk="${lane#jdk}"
            grep -qx "lane=${lane}" \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx "jdk=${expected_jdk}" \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx "version=${version}" \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx "rc=${rc_number}" \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx "commit=${GITHUB_SHA}" \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx 'signed=false' \
              "release-java/lanes/${lane}-manifest.txt"
            grep -qx 'staged=false' \
              "release-java/lanes/${lane}-manifest.txt"
          done

          files="${GITHUB_WORKSPACE}/release-java/final/paimon-maven-repository-files.txt"
          (
            cd "${combined}"
            find . -type f | LC_ALL=C sort > "${files}"
          )
          if [[ ! -s "${files}" ]] ||
             ! grep -q '\.pom$' "${files}" ||
             ! grep -q '\.jar$' "${files}"; then
            echo "Combined Maven repository image is incomplete" >&2
            exit 1
          fi
          if grep -q '\.asc$' "${files}"; then
            echo "Combined repository image is unexpectedly signed" >&2
            exit 1
          fi

          (
            cd "${combined}"
            while IFS= read -r artifact; do
              sha512sum "${artifact}"
            done < "${files}"
          ) > release-java/final/paimon-maven-repository-sha512.txt

          archive="paimon-${version}-maven-repository.tar.gz"
          tar -czf "release-java/final/${archive}" \
            -C "${combined}" .
          (
            cd release-java/final
            sha512sum "${archive}" > "${archive}.sha512"
          )

          {
            echo "version=${version}"
            echo "rc=${rc_number}"
            echo "tag=${GITHUB_REF_NAME}"
            echo "commit=${GITHUB_SHA}"
            echo "lanes=jdk8,jdk11,jdk17"
            echo "signed=false"
            echo "staged=false"
            echo "artifact_source=combined-maven-file-repository"
          } > release-java/final/paimon-maven-repository-manifest.txt

      - name: Upload combined Java repository
        uses: actions/upload-artifact@v6
        with:
          name: java-release-repository
          path: release-java/final/
          if-no-files-found: error