name: sonar-scan

on:
  push:
    branches: [master]
  pull_request:
    branches: [master]

# Cancel old PR builds when pushing new commits.
concurrency:
  group: scan-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  sonar-scan:
    runs-on: ubuntu-latest
    env:
      SONAR_SCANNER_VERSION: 5.0.1.3006
      SONAR_SERVER_URL: "https://sonarcloud.io"
      BUILD_WRAPPER_OUT_DIR: build_wrapper_output_directory # Directory where build-wrapper output will be placed
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
          submodules: recursive
      - name: Set up JDK 17
        uses: actions/setup-java@v1
        with:
          java-version: 17
      - name: Download and set up sonar-scanner
        env:
          SONAR_SCANNER_DOWNLOAD_URL: https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-${{ env.SONAR_SCANNER_VERSION }}-linux.zip
        run: |
          mkdir -p $HOME/.sonar
          curl -sSLo $HOME/.sonar/sonar-scanner.zip ${{ env.SONAR_SCANNER_DOWNLOAD_URL }}
          unzip -o $HOME/.sonar/sonar-scanner.zip -d $HOME/.sonar/
          echo "$HOME/.sonar/sonar-scanner-${{ env.SONAR_SCANNER_VERSION }}-linux/bin" >> $GITHUB_PATH
      - name: Download and set up build-wrapper
        env:
          BUILD_WRAPPER_DOWNLOAD_URL: ${{ env.SONAR_SERVER_URL }}/static/cpp/build-wrapper-linux-x86.zip
        run: |
          curl -sSLo $HOME/.sonar/build-wrapper-linux-x86.zip ${{ env.BUILD_WRAPPER_DOWNLOAD_URL }}
          unzip -o $HOME/.sonar/build-wrapper-linux-x86.zip -d $HOME/.sonar/
          echo "$HOME/.sonar/build-wrapper-linux-x86" >> $GITHUB_PATH
      - name: Install dependencies and prepare build
        run: |
          .github/scripts/sonar-prepare
      - name: Run build-wrapper
        run: |
          build-wrapper-linux-x86-64 --out-dir ${{ env.BUILD_WRAPPER_OUT_DIR }} .github/scripts/sonar-build
      - name: Run sonar-scanner
        if: github.event_name == 'push'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
        run: 'sonar-scanner --define sonar.host.url="${{ env.SONAR_SERVER_URL }}" --define sonar.cfamily.build-wrapper-output="${{ env.BUILD_WRAPPER_OUT_DIR }}"'