name: Omath CI (presets)

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build-and-test:
    strategy:
      fail-fast: false
      matrix:
        # ------- preset ↔ runner pairs -------------
        include:
          - os: ubuntu-latest   # GCC / Ninja (from linux-release preset)
            preset: linux-release
          - os: macos-latest    # Clang / Ninja (from darwin-release preset)
            preset: darwin-release
          - os: windows-latest  # MSVC / Ninja (from windows-release preset)
            preset: windows-release

    runs-on: ${{ matrix.os }}

    steps:
      # 1) checkout (incl. GoogleTest sub-module)
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      # 2) Ninja (needed only on Windows images)
      - name: Install Ninja
        uses: seanmiddleditch/gha-setup-ninja@v4

      # 3) MSVC environment
      - name: Set up MSVC developer command-prompt
        if: runner.os == 'Windows'
        uses: ilammy/msvc-dev-cmd@v1

      # 4) Configure with the selected CMake preset
      - name: Configure (cmake --preset)
        run: cmake --preset ${{ matrix.preset }} -DOMATH_BUILD_TESTS=ON

      # 5) Build
      - name: Build
        # All configure presets put the binary dir in cmake-build/build/${presetName}
        run: cmake --build cmake-build/build/${{ matrix.preset }}

      # 6) Run unit-tests
      - name: Test
        working-directory: cmake-build/build/${{ matrix.preset }}
        run: ctest --output-on-failure