name: Build, lint, and test

on: [push, pull_request]

env:
  # Don't mix these up!
  # runner.workspace = /home/runner/work/serenity
  # github.workspace = /home/runner/work/serenity/serenity
  SERENITY_ROOT: ${{ github.workspace }}

jobs:
  build_and_test:
    runs-on: ubuntu-20.04

    steps:
    - uses: actions/checkout@v2

    # === OS SETUP ===

    # Do we need to update the package cache first?
    # sudo apt-get update -qq

    - name: Purge interfering packages
      # Remove GCC 9 (installed by default)
      run: sudo apt-get purge -y gcc-9 g++-9 libstdc++-9-dev
    - name: Install dependencies
      # These packages are already part of the ubuntu-20.04 image:
      # clang-format-10 cmake gcc-10 g++-10 shellcheck libgmp-dev
      # These aren't:
      run: sudo apt-get install libstdc++-10-dev libmpfr-dev libmpc-dev ninja-build
      # If we ever do any qemu-emulation on Github Actions, we should re-enable this:
      # e2fsprogs qemu-system-i386 qemu-utils
    - name: Use GCC 10 instead
      run: sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 60 --slave /usr/bin/g++ g++ /usr/bin/g++-10
    - name: Check versions
      run: set +e; g++ --version; g++-10 --version; clang-format --version; clang-format-10 --version; python --version; python3 --version; ninja --version

    # === PREPARE FOR BUILDING ===

    - name: Lint (Phase 1/2)
      run: ${{ github.workspace }}/Meta/lint-ci.sh
    - name: Toolchain cache
      uses: actions/cache@v2
      with:
        path: ${{ github.workspace }}/Toolchain/Cache/
        # This assumes that *ALL* LibC headers have an impact on the Toolchain.
        # This is wrong, and causes more Toolchain rebuilds than necessary.
        # However, we want to avoid false cache hits at all costs.
        key: ${{ runner.os }}-toolchain-${{ hashFiles('Libraries/LibC/**/*.h', 'Toolchain/Patches/*.patch') }}
    - name: Restore or regenerate Toolchain
      run: TRY_USE_LOCAL_TOOLCHAIN=y ${{ github.workspace }}/Toolchain/BuildIt.sh

    # TODO: ccache
    # https://cristianadam.eu/20200113/speeding-up-c-plus-plus-github-actions-using-ccache/
    # https://github.com/cristianadam/HelloWorld/blob/master/.github/workflows/build_cmake.yml
    - name: Create build environment
      working-directory: ${{ github.workspace }}
      # Note that this needs to run *even if* the Toolchain was built,
      # in order to set options like BUILD_LAGOM.
      run: |
        mkdir -p Build
        cd Build
        cmake .. -GNinja -DBUILD_LAGOM=1 -DALL_THE_DEBUG_MACROS=1

    # === ACTUALLY BUILD AND TEST ===

    - name: Initialize CodeQL Static Analysis for C++
      uses: github/codeql-action/init@v1
      with:
        languages: cpp
        config-file: ./.github/codeql/config.yml

    - name: Build Serenity and Tests
      working-directory: ${{ github.workspace }}/Build
      run: cmake --build .
    - name: Lint (Phase 2/2)
      working-directory: ${{ github.workspace }}/Meta
      run: ./check-symbols.sh
    - name: Run CMake tests
      working-directory: ${{ github.workspace }}/Build
      run: CTEST_OUTPUT_ON_FAILURE=1 ninja test
    - name: Run JS tests
      working-directory: ${{ github.workspace }}/Build/Meta/Lagom
      run: DISABLE_DBG_OUTPUT=1 ./test-js

     # Run analysis last, so contributors get lint/test feedback ASAP.
    - name: Perform post build CodeQL Analysis
      uses: github/codeql-action/analyze@v1

    # === NOTIFICATIONS ===

    - name: Dump event info
      if: always()
      # Usually unnecessary, but insanely useful if IRC notifications fail.
      run: |
        cat <<"EOF"
        ${{ toJSON(github.event) }}
        EOF
    - name: Generate IRC message
      # I really dislike putting so much logic here, but I can't come up with something better.
      if: github.repository == 'SerenityOS/serenity' && !cancelled() && (github.event_name == 'pull_request' || (github.event_name == 'push' && github.ref == 'refs/heads/master'))
      run: |
        ${{ github.workspace }}/Meta/notify_irc.py <<"EOF"
        ["${{ github.actor }}", ${{ github.run_id }}, "${{ job.status }}",
        ${{ toJSON(github.event) }}
        ]
        EOF
  build_lagom_with_fuzzers:
    runs-on: ubuntu-20.04

    steps:
    - uses: actions/checkout@v2

    # === OS SETUP ===
    #
    - name: Install dependencies
      run: sudo apt-get install ninja-build
    - name: Check versions
      run: set +e; clang --version; clang++ --version; ninja --version

    # === PREPARE FOR BUILDING ===

    # TODO: ccache
    # https://cristianadam.eu/20200113/speeding-up-c-plus-plus-github-actions-using-ccache/
    # https://github.com/cristianadam/HelloWorld/blob/master/.github/workflows/build_cmake.yml
    - name: Create build environment
      working-directory: ${{ github.workspace }}/Meta/Lagom
      run: |
        mkdir -p Build
        cd Build
        cmake -GNinja -DBUILD_LAGOM=ON -DENABLE_FUZZER_SANITIZER=ON -DENABLE_ADDRESS_SANITIZER=ON -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ..

    # === ACTUALLY BUILD ===

    - name: Build Lagom with Fuzzers
      working-directory: ${{ github.workspace }}/Meta/Lagom/Build
      run: cmake --build .