# Based on: https://github.com/onqtam/doctest/blob/master/.github/workflows/main.yml

name: CI

on: [push, pull_request]

jobs:
  ci:
    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}

    env:
      CMAKE_GENERATOR: Ninja

    strategy:
      fail-fast: false
      matrix:
        name: [
          ubuntu-18.04-gcc-7,
          ubuntu-18.04-gcc-8,
          ubuntu-18.04-gcc-9,
          ubuntu-20.04-gcc-10,
          ubuntu-20.04-gcc-11,
          ubuntu-18.04-clang-4.0,
          ubuntu-18.04-clang-5.0,
          ubuntu-18.04-clang-6.0,
          ubuntu-18.04-clang-7,
          ubuntu-18.04-clang-8,
          ubuntu-20.04-clang-9,
          ubuntu-20.04-clang-10,
          ubuntu-20.04-clang-11,
          ubuntu-20.04-clang-11-no-exceptions,
          windows-2019-cl,
          windows-2019-clang-cl,
          windows-2019-clang,
          windows-2019-gcc,
          macOS-10.15-gcc-7,
          macOS-10.15-gcc-8,
          macOS-10.15-gcc-9,
          macOS-latest-xcode-11.3,
          macOS-latest-xcode-12.2,
        ]

        include:
          - name: ubuntu-18.04-gcc-7
            os: ubuntu-18.04
            compiler: gcc
            version: "7"

          - name: ubuntu-18.04-gcc-8
            os: ubuntu-18.04
            compiler: gcc
            version: "8"

          - name: ubuntu-18.04-gcc-9
            os: ubuntu-18.04
            compiler: gcc
            version: "9"

          - name: ubuntu-20.04-gcc-10
            os: ubuntu-20.04
            compiler: gcc
            version: "10"

          - name: ubuntu-20.04-gcc-11
            os: ubuntu-20.04
            compiler: gcc
            version: "11"

          - name: ubuntu-18.04-clang-4.0
            os: ubuntu-18.04
            compiler: clang
            version: "4.0"

          - name: ubuntu-18.04-clang-5.0
            os: ubuntu-18.04
            compiler: clang
            version: "5.0"

          - name: ubuntu-18.04-clang-6.0
            os: ubuntu-18.04
            compiler: clang
            version: "6.0"

          - name: ubuntu-18.04-clang-7
            os: ubuntu-18.04
            compiler: clang
            version: "7"

          - name: ubuntu-18.04-clang-8
            os: ubuntu-18.04
            compiler: clang
            version: "8"

          - name: ubuntu-20.04-clang-9
            os: ubuntu-20.04
            compiler: clang
            version: "9"

          - name: ubuntu-20.04-clang-10
            os: ubuntu-20.04
            compiler: clang
            version: "10"

          - name: ubuntu-20.04-clang-11
            os: ubuntu-20.04
            compiler: clang
            version: "11"

          - name: ubuntu-20.04-clang-11-no-exceptions
            os: ubuntu-20.04
            compiler: clang
            version: "11"
            cmake_vars: "-DCMAKE_CXX_FLAGS=-fno-exceptions -DBUILD_TESTING=OFF -DBUILD_BENCHMARK=ON"

          - name: windows-2019-cl
            os: windows-2019
            compiler: cl

          - name: windows-2019-clang-cl
            os: windows-2019
            compiler: clang-cl

          - name: windows-2019-clang
            os: windows-2019
            compiler: clang

          - name: windows-2019-gcc
            os: windows-2019
            compiler: gcc

          - name: macOS-10.15-gcc-7
            os: macOS-10.15
            compiler: gcc
            version: "7"

          - name: macOS-10.15-gcc-8
            os: macOS-10.15
            compiler: gcc
            version: "8"

          - name: macOS-10.15-gcc-9
            os: macOS-10.15
            compiler: gcc
            version: "9"

          - name: macOS-latest-xcode-11.3
            os: macOS-latest
            compiler: xcode
            version: "11.3"

          - name: macOS-latest-xcode-12.2
            os: macOS-latest
            compiler: xcode
            version: "12.2"

    steps:
      - uses: actions/checkout@v2

      - name: Install (Linux)
        if: runner.os == 'Linux'
        run: |
          # Required for libc6-dbg:i386 and g++-multilib packages which are 
          # needed for x86 builds.
          sudo dpkg --add-architecture i386
          # clang-3.7 and earlier are not available in Bionic anymore so we get
          # them from the Xenial repositories instead.
          sudo add-apt-repository "deb http://dk.archive.ubuntu.com/ubuntu/ xenial main"
          sudo add-apt-repository "deb http://dk.archive.ubuntu.com/ubuntu/ xenial universe"
          
          sudo apt-get update
          # libc6-dbg:i386 is required for running valgrind on x86.
          sudo apt-get install -y ninja-build valgrind libc6-dbg:i386 -o APT::Immediate-Configure=0
          if [ "${{ matrix.compiler }}" = "gcc" ]; then
            sudo apt-get install -y g++-${{ matrix.version }} g++-${{ matrix.version }}-multilib
            echo "CC=gcc-${{ matrix.version }}" >> $GITHUB_ENV
            echo "CXX=g++-${{ matrix.version }}" >> $GITHUB_ENV
          else
            sudo apt-get install -y clang-${{ matrix.version }} g++-multilib
            echo "CC=clang-${{ matrix.version }}" >> $GITHUB_ENV
            echo "CXX=clang++-${{ matrix.version }}" >> $GITHUB_ENV
          fi
      
      - name: Install (macOS)
        if: runner.os == 'macOS'
        run: |
          brew install ninja
          if [ "${{ matrix.compiler }}" = "gcc" ]; then
            brew install gcc@${{ matrix.version }}
            brew link gcc@${{ matrix.version }}
            echo "CC=gcc-${{ matrix.version }}" >> $GITHUB_ENV
            echo "CXX=g++-${{ matrix.version }}" >> $GITHUB_ENV
          else
            sudo xcode-select -switch /Applications/Xcode_${{ matrix.version }}.app
            echo "CC=clang" >> $GITHUB_ENV
            echo "CXX=clang++" >> $GITHUB_ENV
          fi
      
      - name: Install (Windows)
        if: runner.os == 'Windows'
        shell: powershell
        run: |
          Invoke-Expression (New-Object System.Net.WebClient).DownloadString('https://get.scoop.sh')
          scoop install ninja --global
          if ("${{ matrix.compiler }}".StartsWith("clang")) {
            scoop install llvm --global
          }
          if ("${{ matrix.compiler }}" -eq "gcc") {
            # Chocolatey GCC is broken on the windows-2019 image.
            # See: https://github.com/DaanDeMeyer/doctest/runs/231595515
            # See: https://github.community/t5/GitHub-Actions/Something-is-wrong-with-the-chocolatey-installed-version-of-gcc/td-p/32413
            # scoop install gcc --global
            choco install mingw
            echo "CC=gcc" >> $GITHUB_ENV
            echo "CXX=g++" >> $GITHUB_ENV
          } elseif ("${{ matrix.compiler }}" -eq "clang") {
            echo "CC=clang" >> $GITHUB_ENV
            echo "CXX=clang++" >> $GITHUB_ENV
          } else {
            echo "CC=${{ matrix.compiler }}" >> $GITHUB_ENV
            echo "CXX=${{ matrix.compiler }}" >> $GITHUB_ENV
          }
          # Scoop modifies the PATH so we make the modified PATH global.
          echo "PATH=$env:PATH" >> $GITHUB_ENV
      
      - name: Configure
        if: runner.os == 'Windows'
        run: .github\workflows\vsenv.bat -arch=x64 -host_arch=x64

      - name: Build & Test Debug
        run: |
          cmake -E remove_directory build
          cmake -B build -S . -DCMAKE_BUILD_TYPE=Debug
          cmake --build build -j2
          cd build && ctest -j2 --output-on-failure
        
      - name: Build & Test Release
        run: |
          cmake -E remove_directory build
          cmake -B build -S . -DCMAKE_BUILD_TYPE=Release ${{ matrix.cmake_vars }}
          cmake --build build -j2
          cd build && ctest -j2 --output-on-failure