name: Windows Build

on:
  workflow_call:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  # Windows build and test matrix
  build-and-test-windows:
    name: Build & Test (${{ matrix.platform }})
    runs-on: ${{ matrix.platform }}

    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: windows-2022
          - platform: windows-2025

    env:
      SCCACHE_GHA_ENABLED: "true"

    steps:
      - name: Show env info
        run: |
          Get-CimInstance -ClassName Win32_Processor
          where cl
          & "C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe" -all -products * -prerelease -format json
        shell: powershell

      - name: Checkout code
        uses: actions/checkout@v7
        with:
          submodules: recursive

      - name: Cleanup left marker files
        run: |
          git submodule foreach --recursive 'git reset --hard && git clean -ffdx'
        shell: powershell

      - name: Setup sccache
        uses: mozilla-actions/sccache-action@v0.0.10

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: '3.10'
          cache: 'pip'
          cache-dependency-path: 'pyproject.toml'

      - name: Set up MSVC environment
        uses: ilammy/msvc-dev-cmd@v1.13.0
        with:
          arch: x64

      - name: Set up environment variables
        run: |
          $nproc = (Get-CimInstance Win32_ComputerSystem).NumberOfLogicalProcessors
          echo "NPROC=$nproc" >> $env:GITHUB_ENV
          echo "Using $nproc parallel jobs for builds"
        shell: powershell

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip `
            pybind11==3.0 `
            cmake==3.30.0 `
            ninja==1.11.1 `
            pytest `
            pytest-xdist `
            scikit-build-core `
            setuptools_scm
        shell: powershell

      - name: Build from source
        run: |
          cd "$env:GITHUB_WORKSPACE"
          $env:CMAKE_GENERATOR = "Ninja"
          $env:CMAKE_BUILD_PARALLEL_LEVEL = "$env:NPROC"
          python -m pip install -v . `
            --no-build-isolation `
            --config-settings='cmake.define.BUILD_TOOLS=ON' `
            --config-settings='cmake.define.ENABLE_WERROR=ON' `
            --config-settings='cmake.define.CMAKE_C_COMPILER_LAUNCHER=sccache' `
            --config-settings='cmake.define.CMAKE_CXX_COMPILER_LAUNCHER=sccache'
        shell: powershell

      - name: Show sccache statistics after pip install
        if: always()
        run: sccache --show-stats
        shell: powershell

      - name: Run C++ Tests
        run: |
          cd "$env:GITHUB_WORKSPACE\build"
          cmake --build . --target unittest --config Release --parallel $env:NPROC
        shell: powershell

      - name: Show sccache statistics after tests
        if: always()
        run: sccache --show-stats
        shell: powershell

      - name: Run Python Tests
        run: |
          cd "$env:GITHUB_WORKSPACE"
          python -m pytest python/tests/ --basetemp=./.pytest_tmp
        shell: powershell

      - name: Run C++ Examples
        run: |
          cd "$env:GITHUB_WORKSPACE\examples\c++"
          mkdir build
          cd build
          cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release `
            -DCMAKE_C_COMPILER_LAUNCHER=sccache `
            -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
          cmake --build . --config Release --parallel $env:NPROC

          # Copy zvec DLLs next to the example executables so Windows can find them.
          # CMake places DLLs in bin/ (RUNTIME output) and import libs in lib/.
          $buildDir = "$env:GITHUB_WORKSPACE\build"
          foreach ($dllName in @("zvec.dll", "zvec_core.dll", "zvec_ailego.dll")) {
            $found = $false
            foreach ($sub in @("$buildDir\bin", "$buildDir\bin\Release", "$buildDir\lib", "$buildDir\lib\Release")) {
              $dllPath = Join-Path $sub $dllName
              if (Test-Path $dllPath) {
                Copy-Item $dllPath -Destination . -Force
                Write-Host "Copied $dllName from $sub"
                $found = $true
                break
              }
            }
            if (-not $found) {
              Write-Host "WARNING: $dllName not found, searching recursively..."
              $dll = Get-ChildItem -Path $buildDir -Filter $dllName -Recurse -ErrorAction SilentlyContinue | Select-Object -First 1
              if ($dll) {
                Copy-Item $dll.FullName -Destination . -Force
                Write-Host "Copied $dllName from $($dll.DirectoryName)"
              } else {
                Write-Error "$dllName not found anywhere under $buildDir"
              }
            }
          }

          .\db-example.exe
          .\core-example.exe
          .\ailego-example.exe
        shell: powershell

      - name: Show sccache statistics
        if: always()
        run: sccache --show-stats
        shell: powershell