name: Dependabot automerge

on:
  pull_request:
    types: [opened, synchronize]

jobs:
  automerge:
    runs-on: ubuntu-latest
    if: github.actor == 'dependabot[bot]'
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Fetch Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v3

      - name: Enable auto-merge for github-actions updates
        if: steps.metadata.outputs.package-ecosystem == 'github_actions'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}