dependabot-automerge.yml

name: Dependabot auto-approve and auto-merge

on: pull_request

permissions:
  contents: write
  pull-requests: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    # Who opened the pull request, not who triggered this run: github.actor is whoever caused the event,
    # and a run that Dependabot triggers on someone else's pull request would pass an actor check.
    if: github.event.pull_request.user.login == 'dependabot[bot]'
    steps:
      - name: Fetch Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98 # v3
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

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

      - name: Enable auto-merge for all PRs
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.BOT_PAT }}