Licensing.props

<Project ToolsVersion="15.0">

    <!-- This is a kluge workaround to a failure on Microsoft's part to properly execute on the licensing migration path.
     This does package the LICENSE file, but it also leaves a 'deprecateLicenseUrl' artifact in the package 'nuspec' file. -->

    <PropertyGroup>
        <!-- TODO: TBD: rethink the target paths... ensure they land in each of the projects. -->
        <!-- TODO: TBD: also rethink the orientation, "desired" or "source/destination". -->
        <_SourceLicenseFileDirectory>..\..\</_SourceLicenseFileDirectory>
        <_SourceLicenseFileName>LICENSE.</_SourceLicenseFileName>
        <DestinationLicenseFileName>LICENSE.txt</DestinationLicenseFileName>
        <_SourceLicenseFilePath>$(_SourceLicenseFileDirectory)$(_SourceLicenseFileName)</_SourceLicenseFilePath>
        <_DestinationLicenseFilePath>$(DestinationLicenseFileName)</_DestinationLicenseFilePath>
    </PropertyGroup>

    <!-- TODO: TBD: specify one or the other, the LICENSE file is preferred, we think. -->
    <PropertyGroup>
        <PackageLicenseFile>$(DestinationLicenseFileName)</PackageLicenseFile>
    </PropertyGroup>

    <PropertyGroup>
        <!-- TODO: TBD: https://docs.microsoft.com/en-us/dotnet/core/tools/csproj -->
        <PackageLicenseExpression Condition="!Exists('$(_DestinationLicenseFilePath)')">GPL-3.0-only</PackageLicenseExpression>
    </PropertyGroup>

    <ItemGroup>
        <None Include="$(_DestinationLicenseFilePath)" Pack="true" PackagePath=".">
            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
        </None>
    </ItemGroup>

    <Target Name="CopyLicenseFileForPackagingPurposes" BeforeTargets="BeforeBuild" Condition="!Exists('$(_DestinationLicenseFilePath)')">
        <Copy SourceFiles="$(_SourceLicenseFilePath)" DestinationFiles="$(_DestinationLicenseFilePath)" SkipUnchangedFiles="true" />
    </Target>

</Project>