auto-merge.yml

name: Auto-merge
on: pull_request

permissions: write-all

jobs:
  release:
    runs-on: ubuntu-latest
    # Not sure if "nyurik" is correct here - the PR seem to be created by this account because of the token?
    if: github.actor == 'nyurik' && contains(github.event.pull_request.labels.*.name, 'auto-update')
    steps:
      - name: Check if stable release
        id: check-tag
        run: |
          # Check PR title
          pattern="^Update to refs/tags/v[0-9]+\.[0-9]+\.[0-9]+$"
          if [[ "${{github.event.pull_request.title}}" =~ $pattern ]]; then
              echo "is_stable_release=true" >> $GITHUB_OUTPUT
          fi
      - name: Approve formula PRs
        if: steps.check-tag.outputs.is_stable_release == 'true'
        run: gh pr review --approve "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      - name: Enable auto-merge for formula PRs
        if: steps.check-tag.outputs.is_stable_release == 'true'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

  dependabot:
    runs-on: ubuntu-latest
    if: github.actor == 'dependabot[bot]'
    steps:
      - name: Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v1.6.0
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
      - name: Approve Dependabot PRs
        if: steps.metadata.outputs.update-type == 'version-update:semver-patch'
        run: gh pr review --approve "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      - name: Enable auto-merge for Dependabot PRs
        if: steps.metadata.outputs.update-type == 'version-update:semver-patch'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}