name: CMake Build Matrix

on: [ push, pull_request ]

jobs:
  build:
    name: ${{ matrix.config.name }}
    runs-on: ${{ matrix.config.os }}
    strategy:
      fail-fast: false
      matrix:
        config:
          - name: "Ubuntu latest GCC 9.3"
            os: ubuntu-20.04
            build_type: Release
            packages: ninja-build
            generator: Ninja
            cc: gcc
            cxx: g++

          - name: "Ubuntu 18.04 GCC 8.4"
            os: ubuntu-18.04
            build_type: Release
            packages: ninja-build gcc-8 g++-8
            generator: Ninja
            cc: gcc-8
            cxx: g++-8

          - name: "Windows MSVC 2019"
            os: windows-latest
            build_type: Release
            packages: ninja
            generator: "Visual Studio 16 2019"
            cc: cl
            cxx: cl

          - name: "macOS 10.15 AppleClang"
            os: macos-10.15
            build_type: Release
            packages: ninja
            generator: Ninja
            cc: clang
            cxx: clang++

    steps:
      - uses: actions/checkout@v2

      - name: print environment
        run: |
          echo github.event.action: ${{ github.event.action }}
          echo github.event_name: ${{ github.event_name }}

      - name: Install dependencies on Ubuntu
        if: startsWith(matrix.config.os, 'ubuntu')
        run: |
          sudo apt install ${{ matrix.config.packages }}

      - name: Install dependencies on windows
        if: startsWith(matrix.config.os, 'windows')
        run: |
          choco install ${{ matrix.config.packages }}

      - name: Install dependencies on macOS
        if: startsWith(matrix.config.os, 'macos')
        run: |
          brew install ${{ matrix.config.packages }}

      - name: Configure project
        shell: bash
        run: |
          export CC=${{ matrix.config.cc }}
          export CXX=${{ matrix.config.cxx }}
          ninja --version
          cmake --version
          mkdir build
          mkdir install
          cmake -G "${{ matrix.config.generator }}" -S . -B build -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} -DCMAKE_INSTALL_PREFIX:PATH=install

      - name: Build project
        shell: bash
        run: cmake --build build --config ${{ matrix.config.build_type }}

      - name: Run tests
        run: cd build && ctest -C ${{ matrix.config.build_type }}