generate-images-plantuml.yml

name: PlantUML images

on:
  push:
    branches: 
    - '**'
    paths:
    - '.github/workflows/generate-images-plantuml.yml'
    - 'src/plantuml/**'

  workflow_dispatch:

env:
  PLANTUML_VERSION: 1.2024.4
  PLANTUML_SRC: src/plantuml
  PLANTUML_OUT: images/plantuml

jobs:
  generate:
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository
        uses: actions/checkout@v4

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

      - name: Set up Graphviz
        run: |
            sudo apt-get update
            sudo apt-get install --yes --no-install-recommends graphviz

      - name: Download PlantUML JAR
        run: |
          # Ironically, manually fetching the JAR is faster than installing the Debian plantuml package
          wget -O plantuml.jar "https://github.com/plantuml/plantuml/releases/download/v${{ env.PLANTUML_VERSION }}/plantuml-${{ env.PLANTUML_VERSION }}.jar"

      - name: Prepare output folder
        run: |
          rm -rf "${{ env.PLANTUML_OUT }}"
          mkdir -p "${{ env.PLANTUML_OUT }}"

      - name: Export PlantUML files as png / svg
        run: |
          for ext in png svg; do
            java -jar plantuml.jar -t$ext -v -nometadata -failfast2 -nbthread auto -o "." "${{ env.PLANTUML_SRC }}/**.puml"
            rsync -v --recursive --include="*.$ext" --filter="-! */" "${{ env.PLANTUML_SRC }}"/* "${{ env.PLANTUML_OUT }}"
          done

      - name: Add & Commit
        uses: EndBug/add-and-commit@v9
        with:
          add: ${{ env.PLANTUML_OUT }}
          pull: --rebase --autostash