release.yml

name: Manual Release to Maven Central

on:
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

concurrency: release

jobs:
  release:
    runs-on: ubuntu-latest
    outputs:
      next_snapshot: ${{ steps.compute.outputs.next_snapshot }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 17
          server-id: central
          server-username: MAVEN_USERNAME
          server-password: MAVEN_PASSWORD

      - name: Import GPG key
        run: |
          mkdir -p ~/.gnupg
          chmod 700 ~/.gnupg
          echo "allow-loopback-pinentry" >> ~/.gnupg/gpg-agent.conf
          echo "pinentry-mode loopback" >> ~/.gnupg/gpg.conf
          echo "no-tty" >> ~/.gnupg/gpg.conf
          echo "${{ secrets.GPG_PRIVATE_KEY }}" | gpg --batch --yes --pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}" --import

      - name: Get current version
        id: version
        run: |
          VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
          echo "current=$VERSION" >> $GITHUB_OUTPUT

      - name: Compute release + next snapshot
        id: compute
        run: |
          BASE=${{ steps.version.outputs.current }}
          BASE=${BASE%-SNAPSHOT}

          X=$(echo $BASE | cut -d. -f1)
          Y=$(echo $BASE | cut -d. -f2)
          NEW_Y=$((Y + 1))

          RELEASE="$X.$NEW_Y"
          NEXT_SNAPSHOT="$X.$NEW_Y-SNAPSHOT"

          echo "release=$RELEASE" >> $GITHUB_OUTPUT
          echo "next_snapshot=$NEXT_SNAPSHOT" >> $GITHUB_OUTPUT

      # 1️⃣ Set release version everywhere
      - name: Set release version
        run: |
          mvn versions:set \
            -DnewVersion=${{ steps.compute.outputs.release }} \
            -DprocessAllModules=true \
            -DgenerateBackupPoms=false

      # 2️⃣ Deploy selected modules
      - name: Deploy selected modules
        run: |
          mvn -pl functional-definitions/annotation-definitions,functional-definitions/functional-compiler -am clean deploy \
            -Dmaven.test.skip=true \
            -Dgpg.pinentryMode=loopback \
            -Dgpg.passphrase="${GPG_PASSPHRASE}"
        env:
          MAVEN_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
          MAVEN_PASSWORD: ${{ secrets.CENTRAL_TOKEN }}
          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}

      # 3️⃣ Commit release + tag
      - name: Commit release and tag
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"
          git commit -am "Release ${{ steps.compute.outputs.release }}"
          git tag v${{ steps.compute.outputs.release }}
          git push origin v${{ steps.compute.outputs.release }}

      # 4️⃣ Set next snapshot
      - name: Set next snapshot
        run: |
          mvn versions:set \
            -DnewVersion=${{ steps.compute.outputs.next_snapshot }} \
            -DprocessAllModules=true \
            -DgenerateBackupPoms=false

      # 5️⃣ Set version in CHANGELOG
      - name: Update CHANGELOG for release
        run: |
          VERSION=${{ steps.compute.outputs.release }}
          DATE=$(date +%Y-%m-%d)
      
          awk -v version="$VERSION" -v date="$DATE" '
          BEGIN { unreleased=0 }
          /^## \[Unreleased\]/ {
              print "## [Unreleased]"
              print ""
              print "## [" version "] - " date
              unreleased=1
              next
          }
          unreleased==1 { print; next }
          { print }
          ' CHANGELOG.md > CHANGELOG.tmp
      
          mv CHANGELOG.tmp CHANGELOG.md

      # 6️⃣ Commit snapshot on new branch
      - name: Create snapshot branch
        run: |
          git checkout -b bump-${{ steps.compute.outputs.next_snapshot }}
          git commit -am "Bump version to ${{ steps.compute.outputs.next_snapshot }}"
          git push origin HEAD

      # 7️⃣ Create PR instead of pushing to master
      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v6
        with:
          branch: bump-${{ steps.compute.outputs.next_snapshot }}
          title: "Bump version to ${{ steps.compute.outputs.next_snapshot }}"
          body: "Automatic snapshot bump after Maven Central release."