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name: MSBuild MSVC Project File CI

on: [push, pull_request]

env:
  # Path to the solution file relative to the root of the project.
  SOLUTION_FILE_PATH: ./build/msvc/portaudio.sln
  VCPROJ_FILE_PATH: ./build/msvc/portaudio.vcproj
  VCXPROJ_FILE_PATH: ./build/msvc/portaudio.vcxproj
  VCXPROJ_FILTERS_FILE_PATH: ./build/msvc/portaudio.vcxproj.filters
  VCXPROJ_USER_FILE_PATH: ./build/msvc/portaudio.vcxproj.user
  DEF_FILE_PATH: ./build/msvc/portaudio.def

jobs:
  build:
    runs-on: windows-latest
    strategy:
      matrix:
        BUILD_CONFIGURATION: [Release]
        BUILD_PLATFORM: [Win32, x64]

    steps:
    - name: Add MSBuild to PATH
      uses: microsoft/setup-msbuild@v1

    - uses: actions/checkout@v2

    - name: Upgrade VC Project File
      # We maintain our vcproj file in an old format to maintain backwards compatibility
      # This step upgrades the project to the latest version of MSVC
      # see https://docs.microsoft.com/en-us/visualstudio/ide/reference/upgrade-devenv-exe?view=vs-2019
      # pipe to file to ensure that it terminates https://stackoverflow.com/questions/48896010/occasionally-occurring-msbuild-error-msb3428/48918105#48918105
      # discussion of using vswhere.exe here: https://stackoverflow.com/questions/65287456/how-to-upgrade-a-visual-studio-project-from-within-a-github-action/65311868#65311868
      run: |
        $devenv = & vswhere.exe '-property' productPath
        Write-Output "$devenv"
        & $devenv "${{env.VCPROJ_FILE_PATH}}" /Upgrade /NoSplash | Out-Null
        Write-Output "devenv launched"
        while (!(Test-Path "${{env.VCXPROJ_FILE_PATH}}")) { Start-Sleep -Seconds 10 }
        Write-Output "vcxproj found"
        while (!(Test-Path "${{env.VCXPROJ_FILTERS_FILE_PATH}}")) { Start-Sleep -Seconds 10 }
        Write-Output "vcxproj.filters found"
        Start-Sleep -Seconds 10
        Write-Output "done."

    - name: Remove ASIO Files and Enable PA_USE_DS=1
      # Process the project files to remove ASIO-related sources and includes (since we can not access the ASIO SDK in a public build)
      run: |
        # Process .vcxproj file: remove source files
        $xdoc = new-object System.Xml.XmlDocument
        $vcxprojFile = resolve-path("${{env.VCXPROJ_FILE_PATH}}")
        $xdoc.load($vcxprojFile)
        $namespace = New-Object -TypeName "Xml.XmlNamespaceManager" -ArgumentList $xdoc.NameTable
        $namespace.AddNamespace("vs", $xdoc.DocumentElement.NamespaceURI)
        $nodes = $xdoc.SelectNodes("//vs:ClCompile[contains(@Include, '..\src\hostapi\asio')]", $namespace)
        Write-Output "deleting ASIO related compilation nodes from .vcxproj:"
        Write-Output $nodes
        ForEach($node in $nodes) {
          $parent = $node.ParentNode
          $parent.RemoveChild($node)
        }
        # Enable DirectSound host API
        $nodes = $xdoc.SelectNodes("//vs:PreprocessorDefinitions[contains(., 'PA_USE_DS=0')]", $namespace)
        ForEach($node in $nodes) {
          $text = $node.InnerText
          $node.InnerText = $text -replace 'PA_USE_DS=0', 'PA_USE_DS=1'
        }
        $xdoc.save($vcxprojFile)
        # Process .vcxproj.filters file: remove source files and includes
        $vcxprojFiltersFile = resolve-path("${{env.VCXPROJ_FILTERS_FILE_PATH}}")
        $xdoc.load($vcxprojFiltersFile)
        $namespace = New-Object -TypeName "Xml.XmlNamespaceManager" -ArgumentList $xdoc.NameTable
        $namespace.AddNamespace("vs", $xdoc.DocumentElement.NamespaceURI)
        $nodes = $xdoc.SelectNodes("//vs:ClCompile[contains(@Include, '..\src\hostapi\asio')]", $namespace)
        Write-Output "deleting ASIO related compilation nodes from .vcxproj.filters:"
        Write-Output $nodes
        ForEach($node in $nodes) {
          $parent = $node.ParentNode
          $parent.RemoveChild($node)
        }
        $nodes = $xdoc.SelectNodes("//vs:ClInclude[contains(@Include, 'pa_asio.h')]", $namespace)
        Write-Output "deleting ASIO related include nodes from .vcxproj.filters:"
        Write-Output $nodes
        ForEach($node in $nodes) {
          $parent = $node.ParentNode
          $parent.RemoveChild($node)
        }
        $xdoc.save($vcxprojFiltersFile)
        # Process .def file: remove PaAsio_ symbols
        Set-Content -Path "${{env.DEF_FILE_PATH}}" -Value (Get-Content -Path "${{env.DEF_FILE_PATH}}" | Select-String -Pattern 'PaAsio_' -NotMatch)

    - name: Build
      working-directory: ${{env.GITHUB_WORKSPACE}}
      # Add additional options to the MSBuild command line here (like platform or verbosity level).
      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
      run: msbuild /m /p:Configuration=${{matrix.BUILD_CONFIGURATION}} /p:Platform=${{matrix.BUILD_PLATFORM}} ${{env.VCXPROJ_FILE_PATH}}