name: Dependabot Auto-Merge

on:
  pull_request:

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-merge:
    name: Auto-merge patch updates
    runs-on: ubuntu-latest
    if: github.actor == 'dependabot[bot]'
    steps:
      - name: Fetch Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

      - name: Wait for CI to pass
        uses: lewagon/wait-on-check-action@v1.5.0
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          check-name: "CI Success"
          wait-interval: 30
          allowed-conclusions: success

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

      - name: Auto-merge minor updates (dev dependencies only)
        if: >-
          steps.metadata.outputs.update-type == 'version-update:semver-minor' &&
          steps.metadata.outputs.dependency-type == 'direct:development'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}