update-compiler.yml

name: update effekt compiler

on:
  # can only be triggered manually
  workflow_dispatch:
    inputs:
      effekt_commit:
        description: "Commit SHA of Effekt submodule to checkout and build. If omitted, the latest commit is chosen. (OPTIONAL)"
        required: false
  
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Setup Scala & sbt
        uses: olafurpg/setup-scala@v11
        with:
          java-version: openjdk@1.17
  
      - name: Setup nodejs
        uses: actions/setup-node@v4
        with:
          node-version: 16

      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Update submodule
        run: |
          git -C effekt/ checkout master
          git -C effekt/ pull
          if [ -n "$effekt_commit" ]; then
            git -C effekt/ checkout ${{ github.event.inputs.effekt_commit }}
          fi
    
      - name: Build Effekt JS
        run: |
          cd effekt/
          sbt assembleJS
          cp -f out/effekt.js ../src/effekt.js
    
      - name: Run webpack
        run: |
          npm install
          npx webpack
    
      - name: Commit updated compiler and submodule update
        run: |
          git config --global user.email "action@github.com"
          git config --global user.name "GitHub Action"
          git add src/ dist/ effekt/
          git commit -m "update compiler"
      
      - name: Push changes
        # here we have to make sure that trigger event is on 'manual'
        # since 'on push' could cause a infinite loop of actions triggering each other
        if: github.event_name == 'workflow_dispatch'
        run: git push origin master