create-release-branch.yml

name: "Create Release PR"
on:
  workflow_dispatch:
    inputs:
      version:
        description: New release version (e.g. 0.46.0)
        type: string
        required: true
      target_branch:
        description: Target branch to create a release/PR to
        type: string
        required: true
        default: master

jobs:
  create-release-pr:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4.1.7
        with:
          fetch-depth: 0
          token: "${{ secrets.RENKUBOT_GITHUB_TOKEN }}"
          ref: '${{ github.event.inputs.target_branch}}'
      - name: Setup Git
        run: |
          git config --global --add user.name "Renku Bot"
          git config --global --add user.email "renku@datascience.ch"
          git config push.autoSetupRemote true
      - name: Create Branch
        run: git checkout -b "release-${{ github.event.inputs.version }}"
      - name: Update changelog
        id: changelog
        shell: bash
        run: |
          VERSION_LENGTH=$(echo -n "${{ github.event.inputs.version }}" | wc -m)
          DELIMITER=$(printf "%.0s-" $(seq $VERSION_LENGTH))
          sed -i -E "s/^(.*.. _changelog:)/\1\n\n${{ github.event.inputs.version }}\n$DELIMITER\n\n/" CHANGELOG.rst
          head -n 10 CHANGELOG.rst
      - name: Commit changes
        run: |
          git add CHANGELOG.rst
          git commit -m "chore: create release ${{ github.event.inputs.version }}"
          git push
      - name: Create Pull Request
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.RENKUBOT_GITHUB_TOKEN }}
          script: |
            const { repo, owner } = context.repo;
            const result = await github.rest.pulls.create({
              title: 'release ${{ github.event.inputs.version }}',
              owner,
              repo,
              head: 'release-${{ github.event.inputs.version }}',
              base: '${{ github.event.inputs.target_branch }}',
              draft: true,
              body: [
                'Release ${{ github.event.inputs.version }}',
                '',
                'This PR is auto-generated by [actions/github-script](https://github.com/actions/github-script).',
                '',
                '/deploy ',
              ].join('\n')
            });
            github.rest.issues.addLabels({
              owner,
              repo,
              issue_number: result.data.number,
              labels: ['release']
            });