dependabot-automerge.yml

name: Dependabot auto-merge

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

permissions:
  contents: write
  pull-requests: write

jobs:
  automerge:
    name: Auto-merge safe dependency updates
    if: github.event.pull_request.user.login == 'dependabot[bot]'
    runs-on: ubuntu-latest
    steps:
      - name: Wait for CI checks
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
        run: gh pr checks "$PR_URL" --watch --fail-fast

      - uses: dependabot/fetch-metadata@v2
        id: metadata
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Enable auto-merge for patch and minor updates
        if: >-
          steps.metadata.outputs.update-type == 'version-update:semver-patch' ||
          steps.metadata.outputs.update-type == 'version-update:semver-minor'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
        run: gh pr merge --auto --squash "$PR_URL"