dependabot-auto-merge.yml

name: Dependabot Auto-Merge

on:
  pull_request_target:
    types:
      - opened
      - synchronize

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-merge:
    name: Auto-merge Dependabot PRs
    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: Auto-approve minor and patch updates
        if: steps.metadata.outputs.update-type == 'version-update:semver-minor' || steps.metadata.outputs.update-type == 'version-update:semver-patch'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
        run: |
          gh pr review --approve "$PR_URL"

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

      - name: Comment on major updates
        if: steps.metadata.outputs.update-type == 'version-update:semver-major'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
        run: |
          gh pr comment "$PR_URL" --body "This is a **major** version update. Manual review required before merging."