ci.yml

name: Scala Course CI

on:
  push:
    tags: '*'
    paths-ignore:
      - 'README.md'
      - '**/README.md'
      - 'slides/**'
      - 'scripts/**'
    branches: [ main ]
  pull_request:
    paths-ignore:
      - 'README.md'
      - '**/README.md'
      - 'slides/**'
      - 'scripts/**'
    branches: [ main ]

  workflow_dispatch:

permissions:
  contents: write

env:
  EXERCISES_DIRECTORY: ./exercises
  THIS_REPO: ${{ github.event.repository.name }}

jobs:
  list-exercises:
    runs-on: ubuntu-latest
    outputs:
      exercises: ${{steps.list.outputs.exercises}}
    steps:
      - uses: actions/checkout@v3
      - id: list
        run: echo "::set-output name=exercises::$(ls $EXERCISES_DIRECTORY | grep exercise_ | jq -cnR '[inputs | select(length>0)]')"
#        run: echo "name=exercises::$(ls $EXERCISES_DIRECTORY | grep exercise_ | jq -cnR '[inputs | select(length>0)]')" >> $GITHUB_OUTPUT

  validate_course:
    runs-on: ubuntu-latest
    needs: list-exercises
    strategy:
      fail-fast: false
      matrix:
        exercise: ${{fromJson(needs.list-exercises.outputs.exercises)}}   
    steps:
    - uses: actions/checkout@v3
    - name: Set up JDK 11
      uses: actions/setup-java@v3
      with:
        java-version: 11
        cache: 'sbt'
        distribution: 'temurin'

    - name: Check code formatting
      run: sbt scalafmtCheckAll
      working-directory: ${{env.EXERCISES_DIRECTORY}}/${{matrix.exercise}}

    - name: Test with sbt
      run: sbt test
      working-directory: ${{env.EXERCISES_DIRECTORY}}/${{matrix.exercise}}

  validate_course_summary:
    if: ${{ always() }}
    runs-on: ubuntu-latest
    needs: validate_course
    steps:
      - name: Check build matrix status
        if: ${{ needs.validate_course.result != 'success' }}
        run: exit 1

  create_release:
    runs-on: ubuntu-latest
    needs: [validate_course]
    # Release gets triggered only on creating new tags
    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/')
    
    steps:
          
      - name: Checkout Course Repo
        uses: actions/checkout@v3
        with:
          path: ${{ env.THIS_REPO }}
          fetch-depth: 0          
      
      - name: Setup Course Management Tools
        uses: robinraju/release-downloader@v1.7
        with:
          repository: lunatech-labs/course-management-tools
          tag: "2.0.0"
          fileName: "course-management-tools.zip"
          out-file-path: "."
      - run: |
          unzip course-management-tools.zip
          echo "$GITHUB_WORKSPACE/course-management-tools/bin" >> $GITHUB_PATH

      - name: Set up JDK 11
        uses: actions/setup-java@v3
        with:
          java-version: 11
          distribution: 'temurin'
      
      - name: Setup Coursier Cache
        uses: coursier/cache-action@v6.2
        with:
          root: ${{ env.THIS_REPO }}
      
      - name: Studentify Repo
        run: |
          mkdir -p studentified
          export PATH=${PATH}:$GITHUB_WORKSPACE/CMT/bin
          git config --global user.email "no-reply@lunatech.com"
          git config --global user.name "Lunatech Labs"
          cmta studentify -f -g -m ${{ env.THIS_REPO }} -d studentified
          (cd studentified && exec zip -r ${{ env.THIS_REPO }}-student.zip ${{ env.THIS_REPO }})  
          
      - name: Linearize Repo
        run: |
          mkdir -p linearized
          cmta linearize -f -m ${{ env.THIS_REPO }} -d linearized
          mv linearized/${{ env.THIS_REPO }} linearized/${{ env.THIS_REPO }}-linearized
          (cd linearized && exec zip -r ${{ env.THIS_REPO }}-linearized.zip ${{ env.THIS_REPO }}-linearized)
        
      - name: Create Github Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
        with:
          tag_name: ${{ github.ref }}
          release_name: Release ${{ github.ref }}
          draft: false
          prerelease: false
          
      - name: Upload Studentified repo to Github release
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }} # release created from previous step
          asset_path: ./studentified/${{ env.THIS_REPO }}-student.zip
          asset_name: ${{ env.THIS_REPO }}-student.zip
          asset_content_type: application/zip
     
      - name: Upload Linearized repo to Github release
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }} # release created from previous step
          asset_path: ./linearized/${{ env.THIS_REPO }}-linearized.zip
          asset_name: ${{ env.THIS_REPO }}-linearized.zip
          asset_content_type: application/zip