release.yml

# Whenever a commit is pushed with a non-snapshot version (no "-SNAPSHOT" suffix), this job will create a new
# GitHub release. Additionally, it will increment the version by one patch level, append a "-SNAPSHOT" suffix, and
# commit + push it to release branch (e.g., "2.3.4" -> "2.3.5-SNAPSHOT")
# Automatically merge release PR
name: Release and Update
on:
  push:
    branches:
      - 'master'
jobs:
  release:
    name: Create Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3
      - uses: gradle/gradle-build-action@v2
      - name: Read Version
        id: read-version
        run: |
          version=`cat gradle.properties | sed -n "s/^.*version\s*=\s*\(\S*\).*$/\1/p"`
          echo "::set-output name=version::$version"
      - name: Generate Changelog
        id: generate-changelog
        run: |
          changelog=`./gradlew generateChangelog`
          echo "::set-output name=changelog::$changelog"
      - name: Create Release
        if: ${{ !endsWith(steps.read-version.outputs.version, 'SNAPSHOT') }}
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: v${{ steps.read-version.outputs.version }}
          release_name: v${{ steps.read-version.outputs.version }}
          body: |
            ${{ steps.generate-changelog.outputs.changelog }}
          draft: true
          prerelease: false
      - name: Update Release Version
        if: ${{ !endsWith(steps.read-version.outputs.version, 'SNAPSHOT') }}
        run: |
          ./gradlew test incrementVersion
          git config --global user.name 'github-actions[bot]'
          git config --global user.email '41898282+github-actions[bot]@users.noreply.github.com'
          git checkout -b release-v${{ steps.read-version.outputs.version }}
          git add gradle.properties
          git commit -am "Increment patch version and append -SNAPSHOT suffix"
          git push --set-upstream origin release-v${{ steps.read-version.outputs.version }}
      - name: Create Release Pull Request
        if: ${{ !endsWith(steps.read-version.outputs.version, 'SNAPSHOT') }}
        id: cpr
        uses: peter-evans/create-pull-request@v4
        with:
          commit-message: Add Release v${{ steps.read-version.outputs.version }}
          committer: github-actions[bot]
          author: 41898282+github-actions[bot]@users.noreply.github.com
          signoff: false
          branch: release-v${{ steps.read-version.outputs.version }}
          base: master
          delete-branch: true
          title: 'Release v${{ steps.read-version.outputs.version }}'
          body: |
            Release report v${{ steps.read-version.outputs.version }}
            - Auto-generated by [create-pull-request][1]
            [1]: https://github.com/peter-evans/create-pull-request
          labels: |
            release
            automated pr
          assignees: Bastian
          reviewers: Bastian
          team-reviewers: |
            owners
            maintainers
          draft: false

      - name: Auto Approve Release Pull Request
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: juliangruber/approve-pull-request-action@v1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          number: ${{ steps.cpr.outputs.pull-request-number }}
      - name: Enable Release Pull Request Automerge
        if: steps.cpr.outputs.pull-request-operation == 'created'
        uses: peter-evans/enable-pull-request-automerge@v2
        with:
          pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}
          merge-method: squash