dependabot-approve-and-auto-merge.yml

name: Dependabot Pull Request Approve and Merge
on: pull_request_target
permissions:
  pull-requests: write
  contents: write
jobs:
  dependabot:
    runs-on: ubuntu-latest
    # Checking the actor will prevent your Action run failing on non-Dependabot
    # PRs but also ensures that it only does work for Dependabot PRs.
    if: ${{ github.actor == 'dependabot[bot]' }}
    steps:
    # This first step will fail if there's no metadata and so the approval
    # will not occur.
    - name: Dependabot metadata
      id: dependabot-metadata
      uses: dependabot/fetch-metadata@v2
      with:
        github-token: "${{ secrets.GITHUB_TOKEN }}"
    # Here the PR gets approved.
    - name: Approve a PR
      run: gh pr review --approve "$PR_URL"
      env:
        PR_URL: ${{ github.event.pull_request.html_url }}
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    # Finally, this sets the PR to allow auto-merging for patch and minor
    # updates if all checks pass
    - name: Enable auto-merge for Dependabot PRs
      if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
      run: gh pr merge --auto --squash "$PR_URL"
      env:
        PR_URL: ${{ github.event.pull_request.html_url }}
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}