name: Windows Compile

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

jobs:
  build:
    runs-on: windows-2022
    strategy:
      fail-fast: false
      matrix:
        config: [Release, Debug]
        toolchain: [windows-msvc, windows-clang-cl]
        standalone: [OFF, ON]
        generate: [Visual Studio 17 2022, Ninja]
        arch: [x64, Win32]
        isPR:
          - ${{ github.event_name == 'pull_request' }}
        exclude:
          - toolchain: windows-clang-cl
            arch: Win32
          - toolchain: windows-clang-cl
            generate: Visual Studio 17 2022
          - isPR: true
            standalone: OFF
    steps:
      - uses: actions/checkout@v4
      - name: Cache vcpkg
        uses: actions/cache@v4
        with:
          key: ${{ runner.os }}-vcpkg-x64-windows-static-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-vcpkg-x64-windows-static-
          path: D:/a/vcpkg
      - name: Build Visual Studio
        if: ${{ matrix.generate == 'Visual Studio 17 2022' }}
        env:
          VCPKG_ROOT: D:/a/vcpkg
        run: |
          # Enable the viewer in CI (BUILD_UI is off by default), except on Win32:
          # libultraship is x64-only. Its automate-vcpkg bootstraps vcpkg to
          # fetch SDL2/GLEW/libzip/nlohmann-json/tinyxml2/spdlog.
          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_GENERATOR_PLATFORM=${{ matrix.arch }} -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DUSE_STANDALONE=${{ matrix.standalone }} -DBUILD_UI=${{ matrix.arch == 'Win32' && 'OFF' || 'ON' }} -DUSE_AUTO_VCPKG=ON -DVCPKG_TARGET_TRIPLET=x64-windows-static
          # Multi-config generator: pass --config, else it builds Debug and the
          # Release artifact path below finds nothing.
          cmake --build ./build/${{ matrix.arch }} --config ${{ matrix.config }}
      - name: Setup Variables
        if: ${{ matrix.generate == 'Ninja' }}
        uses: ilammy/msvc-dev-cmd@v1
        with:
          arch: ${{ matrix.arch }}
      - name: Build Ninja
        if: ${{ matrix.generate == 'Ninja' }}
        env:
          VCPKG_ROOT: D:/a/vcpkg
        run: |
          # Enable the viewer in CI, off on Win32 (libultraship is x64-only). Ninja
          # is single-platform, so name the vcpkg triplet explicitly (there is no
          # CMAKE_VS_PLATFORM_NAME for automate-vcpkg to key off).
          cmake -S . -B "build/${{ matrix.arch }}" -G "${{ matrix.generate }}" -DCMAKE_TOOLCHAIN_FILE="cmake/toolchain/${{ matrix.toolchain }}.cmake" -DCMAKE_BUILD_TYPE:STRING=${{ matrix.config }} -DUSE_STANDALONE=${{ matrix.standalone }} -DBUILD_UI=${{ matrix.arch == 'Win32' && 'OFF' || 'ON' }} -DUSE_AUTO_VCPKG=ON -DVCPKG_TARGET_TRIPLET=x64-windows-static
          cmake --build ./build/${{ matrix.arch }}
      - name: Publish packaged artifacts
        if: ${{ matrix.config == 'Release' && matrix.generate == 'Visual Studio 17 2022' && matrix.standalone == 'ON' }}
        uses: actions/upload-artifact@v4
        with:
          name: torch-windows-${{ matrix.arch }}-${{ matrix.toolchain }}
          path: build/${{ matrix.arch }}/Release/torch.exe
          if-no-files-found: error