name: Build

on:
  push:
    branches:
      - main
      - stable
  pull_request:
    branches:
      - main
      - stable

env:
  CTEST_OUTPUT_ON_FAILURE: ON
  CTEST_PARALLEL_LEVEL: 2

jobs:
  ####################
  # Linux / macOS
  ####################

  Unix:
    name: ${{ matrix.name }} (${{ matrix.config }}, ${{ fromJSON('["HeaderOnly", "Static"]')[matrix.static == 'ON'] }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-20.04, macos-latest]
        config: [Release]
        static: [ON, OFF]
        include:
          - os: macos-latest
            name: macOS
          - os: ubuntu-20.04
            name: Linux
    env:
      IGL_NUM_THREADS: 1  # See https://github.com/libigl/libigl/pull/996
    steps:
      - name: Checkout repository
        uses: actions/checkout@v1
        with:
          fetch-depth: 10

      - name: Dependencies (Linux)
        if: runner.os == 'Linux'
        run: |
            sudo apt-get update
            sudo apt-get install \
              libblas-dev \
              libboost-filesystem-dev \
              libboost-system-dev \
              libboost-thread-dev \
              libglu1-mesa-dev \
              liblapack-dev \
              libmpfr-dev \
              xorg-dev \
              ccache

      - name: Dependencies (macOS)
        if: runner.os == 'macOS'
        run: |
          brew update
          brew install boost gmp mpfr ccache

      - name: Cache Build
        id: cache-build
        uses: actions/cache@v1
        with:
          path: ~/.ccache
          key: ${{ runner.os }}-${{ matrix.config }}-${{ matrix.static }}-cache

      - name: Prepare ccache
        run: |
          ccache --max-size=1.0G
          ccache -V && ccache --show-stats && ccache --zero-stats

      - name: Configure
        run: |
          mkdir -p build
          cd build
          cmake .. \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            -DCMAKE_BUILD_TYPE=${{ matrix.config }} \
            -DLIBIGL_USE_STATIC_LIBRARY=${{ matrix.static }} \
            -DLIBIGL_WITH_CGAL=ON \
            -DLIBIGL_WITH_COMISO=ON

      - name: Build
        run: cd build; make -j2; ccache --show-stats

      - name: Tests
        run: cd build; ctest --verbose

  ####################
  # Windows
  ####################

  Windows:
    name: Windows (${{ matrix.config }}, ${{ fromJSON('["HeaderOnly", "Static"]')[matrix.static == 'ON'] }})
    runs-on: windows-2019
    env:
      CC: cl.exe
      CXX: cl.exe
    strategy:
      fail-fast: false
      matrix:
        config: [Release]
        static: [ON, OFF]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v1
        with:
          fetch-depth: 10
      - uses: seanmiddleditch/gha-setup-ninja@master

      - name: Setup Conda
        uses: conda-incubator/setup-miniconda@v2
        with:
          activate-environment: libigl-cgal
          environment-file: cmake/libigl-cgal.yml
          auto-activate-base: false

      - name: Set env
        run: |
          echo "appdata=$env:LOCALAPPDATA" >> ${env:GITHUB_ENV}

      - name: Cache build
        id: cache-build
        uses: actions/cache@v1
        with:
          path: ${{ env.appdata }}\Mozilla\sccache
          key: ${{ runner.os }}-${{ matrix.config }}-${{ matrix.static }}-cache

      - name: Prepare sccache
        run: |
          Invoke-Expression (New-Object System.Net.WebClient).DownloadString('https://get.scoop.sh')
          scoop install sccache --global
          # Scoop modifies the PATH so we make it available for the next steps of the job
          echo "${env:PATH}" >> ${env:GITHUB_PATH}

        # We run configure + build in the same step, since they both need to call VsDevCmd
        # Also, cmd uses ^ to break commands into multiple lines (in powershell this is `)
      - name: Configure and build
        shell: cmd
        run: |
          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\Tools\VsDevCmd.bat" -arch=x64
          cmake -G Ninja ^
            -DCMAKE_CXX_COMPILER_LAUNCHER=sccache ^
            -DCMAKE_BUILD_TYPE=${{ matrix.config }} ^
            -DLIBIGL_USE_STATIC_LIBRARY=${{ matrix.static }} ^
            -DLIBIGL_WITH_CGAL=ON ^
            -DLIBIGL_WITH_COMISO=OFF ^
            -DCMAKE_JOB_POOLS=pool-linking=1;pool-compilation=2 ^
            -DCMAKE_JOB_POOL_COMPILE:STRING=pool-compilation ^
            -DCMAKE_JOB_POOL_LINK:STRING=pool-linking ^
            -B build ^
            -S .
          cmake --build build

      - name: Tests
        run: cd build; ctest --verbose