release.yml

name: Release

on:
  push:
    tags: ['v*']
  workflow_dispatch:
    inputs:
      tag:
        description: 'Existing git tag to create a GitHub Release for (e.g. v1.0.0). Does NOT re-publish to Maven.'
        required: true
        type: string

permissions:
  contents: write # create the GitHub Release for the tag

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.tag || github.ref_name }}
      - uses: actions/setup-java@v4
        with:
          java-version: '21'
          distribution: 'temurin'
      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v4
      # Maven publish only runs for a real tag push. A manual dispatch is
      # release-only (the version is already on Maven Central and is immutable).
      - name: Set version from tag
        if: github.event_name == 'push'
        run: |
          VERSION="${GITHUB_REF_NAME#v}"
          sed -i "s/VERSION_NAME=.*/VERSION_NAME=$VERSION/" gradle.properties
      - name: Publish to Maven Central
        if: github.event_name == 'push'
        run: ./gradlew publishAndReleaseToMavenCentral --no-configuration-cache
        env:
          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USERNAME }}
          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}
          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_KEY }}
          ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.GPG_PASSPHRASE }}
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v3
        with:
          tag_name: ${{ inputs.tag || github.ref_name }}
          generate_release_notes: true