plantuml.yml

name: Generate PlantUML Diagrams

on:
  push:
    branches:
      - main
    paths:
      - 'diagrams/*.puml' # Only trigger on changes to .puml files
  pull_request:
    branches:
      - main
    paths:
      - 'diagrams/*.puml' # Only trigger on changes to .puml files

jobs:
  generate-diagrams:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.GITHUB_TOKEN }}

    - name: Set up Java
      uses: actions/setup-java@v4
      with:
        distribution: 'temurin'
        java-version: '11'

    - name: Install PlantUML and Graphviz
      run: |
        sudo apt-get update
        sudo apt-get install -y plantuml graphviz

    - name: List PUML files (Debugging Step)
      run: |
        find diagrams/ -name '*.puml'

    - name: Confirm .puml Files Exist (Debugging Step)
      run: |
        if ! compgen -G "diagrams/*.puml" > /dev/null; then
          echo "No .puml files found to generate diagrams."
          exit 1
        fi

    - name: Generate Diagrams
      run: |
        plantuml -tpng diagrams/*.puml -o png/

    - name: Check Generated PNGs (Debugging Step)
      run: |
        ls -l diagrams/png/*.png || echo "No .png files generated."

    - name: Commit and Push Diagrams
      run: |
        if ls diagrams/png/*.png 1> /dev/null 2>&1; then
          # Configure git user
          git config --global user.name 'GitHub Action'
          git config --global user.email 'action@github.com'
          
          # Stage all PNG files (new and modified)
          git add diagrams/png/*.png
          
          # Check if there are any staged changes
          if git diff --cached --exit-code; then
            echo "No changes in diagrams. Skipping commit."
          else
            git commit -m "Add or update generated PlantUML diagrams"
            git push
          fi
        else
          echo "No .png files generated."
        fi