bump-global-json.yml

name: Bump global.json for dotnet/installer bumps
on: pull_request_target

jobs:
  bump-global-json:
    name: Bump global.json
    runs-on: ubuntu-latest
    if: contains(github.event.pull_request.title, 'Update dependencies from dotnet/installer') && github.actor == 'dotnet-maestro[bot]'
    steps:
    - name: 'Checkout repo'
      uses: actions/checkout@v3
      with:
        fetch-depth: 0
        repository: ${{ github.event.pull_request.head.repo.full_name }}
        ref: ${{ github.event.pull_request.head.sha }}

    - name: 'Update global.json'
      run: |
        set -exo pipefail
        touch Make.config.inc # create a dummy file to avoid logic we don't need executed here
        make global.json
        if git diff --exit-code -- global.json; then
          echo "No global.json update necessary"
          exit 0
        fi
        git add -- global.json
        git config --global user.email "github-actions@xamarin.com"
        git config --global user.name "GitHub Actions"
        git checkout "$GITHUB_HEAD_REF"
        git commit -m "Re-generate global.json"
        git push