name: PR auto-{approve,merge}

on:
  pull_request_target:

permissions:
  pull-requests: write
  contents: write

jobs:
  dependabot:
    name: Dependabot
    runs-on: ubuntu-latest

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

      - name: Approve Dependabot PR
        if: ${{steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major'}}
        run: gh pr review --approve "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Merge Dependabot PR
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}