name: Dependabot Automerge

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

permissions:
  contents: write
  pull-requests: write

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

      - name: Auto-approve minor/patch updates
        if: |
          steps.metadata.outputs.update-type == 'version-update:semver-minor' ||
          steps.metadata.outputs.update-type == 'version-update:semver-patch'
        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 minor/patch updates
        if: |
          steps.metadata.outputs.update-type == 'version-update:semver-minor' ||
          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 }}