name: Dependabot auto-merge

on: pull_request

permissions:
  contents: write
  pull-requests: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    if: github.actor == 'dependabot[bot]'
    steps:
      - name: Fetch dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

      - name: Approve and enable auto-merge for minor/patch updates
        if: steps.metadata.outputs.update-type != 'version-update:semver-major'
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh pr review --approve "$PR_URL"
          gh pr merge --auto --squash "$PR_URL"