---
# yamllint disable rule:line-length
name: Dependabot auto-approval and auto-merge
"on": pull_request

permissions:
  contents: write
  pull-requests: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    # limit this to PRs opened by dependabot
    if: ${{ github.actor == 'dependabot[bot]' }}
    steps:
      - name: Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v1
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
          alert-lookup: true
          compat-lookup: true
      - uses: actions/checkout@v3
      - name: Approve a PR if not already approved

        run: |
          # sets the upstream metadata for `gh pr status`
          gh pr checkout "$PR_URL"
          if [ "$(gh pr status --json reviewDecision -q .currentBranch.reviewDecision)" != "APPROVED" ];
          then gh pr review --approve "$PR_URL"
          else echo "PR already approved, skipping additional approvals to minimize emails/notification noise.";
          fi
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      - name: Enable auto-merge for Dependabot PRs
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}