automatic-merge.yml

name: Automatic dependabot reviewer
on:
  workflow_dispatch:
  pull_request:
    branches:
      - 'master'

jobs:
  review-dependabot-pr:
    runs-on: ubuntu-latest
    
    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
    
    env:
      PR_URL: ${{github.event.pull_request.html_url}}
      GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
    
    permissions:
      pull-requests: write
      contents: write
        
    steps:
      - name: Dependabot metadata
        id: dependabot-metadata
        uses: dependabot/fetch-metadata@v2.3.0
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          compat-lookup: true

      - name: Merge patch and minor updates
        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' || steps.dependabot-metadata.outputs.update-type == 'version-update:semver-minor'}}
        run: |
          gh pr review $PR_URL --approve -b "I'm **approving** this pull request because **it includes a patch or minor update**"
          gh pr merge --auto --merge "$PR_URL"

      - name: Merge major updates of development dependencies
        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:development'}}
        run: |
          gh pr review $PR_URL --approve -b "I'm **approving** this pull request because **it includes a major update of a dependency used only in development**"
          gh pr merge --auto --merge "$PR_URL"

      - name: Merge major updates of production dependencies with compatibility score greater than 70
        if: ${{steps.dependabot-metadata.outputs.compatibility-score > 70}}
        run: |
          gh pr review $PR_URL --approve -b "I'm **approving** this pull request because **it includes a major update of a dependency used in production but compatibility is greater than *70%***"
          gh pr merge --auto --merge "$PR_URL"

      - name: Comment on major updates of non-development dependencies if the compatibility score is less than 70
        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' && steps.dependabot-metadata.outputs.dependency-type == 'direct:production' && steps.dependabot-metadata.outputs.compatibility-score < 70}}
        run: |
          gh pr comment $PR_URL --body "I'm **not approving** this PR because **it includes a major update of a dependency used in production and compatibility is less than 70**"
          gh pr edit $PR_URL --add-label "requires-manual-qa"