name: Dependabot auto-merge
on: pull_request

permissions:
  checks: read
  contents: write
  pull-requests: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    if: ${{ github.actor == 'dependabot[bot]' }}
    steps:
      - name: Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
      - name: Wait for status checks
        uses: lewagon/wait-on-check-action@v1.3.4
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          ref: ${{ github.event.pull_request.head.sha || github.sha }}
          check-regexp: (lint|build|test).*
      - name: Enable auto-merge for Dependabot PRs
        if: ${{ steps.metadata.outputs.update-type == 'version-update:semver-minor' || steps.metadata.outputs.update-type == 'version-update:semver-patch'}}
        run: gh pr merge --auto --merge "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}