dependabot-auto-merge.yml

name: Dependabot auto-merge (GitHub native)

on:
  pull_request_target:
    types: [opened, reopened, synchronize, ready_for_review]

permissions:
  pull-requests: write
  contents: write

jobs:
  enable-automerge:
    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' && !github.event.pull_request.draft }}
    runs-on: ubuntu-latest

    steps:
      - name: Fetch Dependabot metadata
        id: meta
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: ${{ secrets.AUTO_MERGE_DEPENDABOT }}

      - name: Approve PR (only if required by branch rules)
        if: ${{ steps.meta.outputs.update-type != 'version-update:semver-major' }}
        run: gh pr review "$PR_NUMBER" --approve --repo "$GITHUB_REPOSITORY"
        env:
          PR_NUMBER: ${{ github.event.pull_request.number }}
          GH_TOKEN: ${{ secrets.AUTO_MERGE_DEPENDABOT }}

      - name: Enable auto-merge (squash)
        if: ${{ steps.meta.outputs.update-type != 'version-update:semver-major' }}
        run: gh pr merge "$PR_NUMBER" --squash --auto --repo "$GITHUB_REPOSITORY"
        env:
          PR_NUMBER: ${{ github.event.pull_request.number }}
          GH_TOKEN: ${{ secrets.AUTO_MERGE_DEPENDABOT }}