main.yml

name: Add @base on Push

on: [push]

jobs:
  check_commit:
    runs-on: ubuntu-latest
    outputs:
      skip: ${{ steps.skip_check.outputs.skip }}
    steps:
    - name: Check out code
      uses: actions/checkout@v2
    - id: skip_check
      run: |
        MESSAGE=$(git log --format=%B -n 1)
        if [[ "$MESSAGE" == *"[AUTO]"* ]]; then
          echo "Commit message contains [AUTO]. Setting skip to true."
          echo "::set-output name=skip::true"
        else
          echo "::set-output name=skip::false"
        fi

  update_ttl_files:
    needs: check_commit
    runs-on: ubuntu-latest
    if: needs.check_commit.outputs.skip == 'false'    
    steps:
    - name: Check out code
      uses: actions/checkout@v2
      with:
        fetch-depth: 0

    - name: Set up Python
      uses: actions/setup-python@v2
      with:
        python-version: 3.8

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt

    - name: Get changed files
      id: getfile
      run: |
        files=$(git diff-tree --no-commit-id --name-only -r $(git log -n 1 --pretty=format:"%H") | grep ".ttl$" || echo "")
        if [ -z "$files" ]; then
          echo "No .ttl files changed."
          exit 0
        fi
        echo "::set-output name=files::$files"
      
    - name: Run Python script on changed files
      run: |
        IFS=' ' read -ra ADDR <<< "${{ steps.getfile.outputs.files }}"
        for file in "${ADDR[@]}"; do
          python add-base.py "$file"
        done

    - name: Configure Git
      run: |
        git config user.name "GitHub Actions Bot"
        git config user.email "<steve@steveray.com>"
            
    - name: Commit and Push changes
      run: |
        git add -u  # Adds only modified files to the staging area
        if git diff-index --quiet HEAD --; then
          echo "No changes to commit"
        else
          git commit -m "Updated .ttl files with base URI [AUTO]"
          git push
        fi