<?xml version="1.0" encoding="utf-8"?>

<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

<PropertyGroup>

<!--Don't produce or publish symbols for Facade assemblies.-->

<PublishWindowsPdb>false</PublishWindowsPdb>

<!-- GenFacades requires a PDB -->

<DebugType>portable</DebugType>

<NoWarn Condition="'$(IsReferenceAssembly)' == 'true'">$(NoWarn);0436</NoWarn>

<HasReferenceAssembly Condition="'$(IsReferenceAssembly)' != 'true' AND Exists('..\ref\$(AssemblyName).Ref.csproj')">true</HasReferenceAssembly>

</PropertyGroup>

<ItemGroup>

<PackageReference Include="Microsoft.DotNet.GenFacades" Version="$(MicrosoftDotNetGenFacadesPackageVersion)" PrivateAssets="All" />

<ContractProjectReference Include="..\ref\$(AssemblyName).Ref.csproj"

Condition="'@(ContractProjectReference)' == '' AND '$(HasReferenceAssembly)' == 'true'" />

</ItemGroup>

<Target Condition="'@(ContractProjectReference)' == ''" Name="EnsureContractProjectReference" >

<!-- If no ContractProjectReference was specified, use a compatible TargetFramework from this project -->

<ItemGroup>

<!-- Exclude the current TargetFramework to find the next closest TargetFramework-->

<_OtherTargetFrameworks Include="$(TargetFrameworks)" Exclude="$(TargetFramework)" />

<_SelfProjectReference Include="$(MSBuildProjectFile)" TargetFrameworks="@(_OtherTargetFrameworks)" />

</ItemGroup>

<!-- Find the next closest reference -->

<GetReferenceNearestTargetFrameworkTask AnnotatedProjectReferences="@(_SelfProjectReference)"

CurrentProjectTargetFramework="$(TargetFramework)"

CurrentProjectTargetPlatform="$(TargetPlatformMoniker)"

CurrentProjectName="$(MSBuildProjectName)"

FallbackTargetFrameworks="$(AssetTargetFallback)">

<Output ItemName="_AnnotatedSelfProjectReference" TaskParameter="AssignedProjects" />

</GetReferenceNearestTargetFrameworkTask>

<Error Text="Cannot locate a compatible reference from '@(_OtherTargetFrameworks)' for TargetFramework '$(TargetFramework)'. Cannot generate a facade without a reference as input."

Condition="'%(_AnnotatedSelfProjectReference.NearestTargetFramework)' == ''" />

<ItemGroup>

<ContractProjectReference Include="@(_AnnotatedSelfProjectReference)" SetTargetFramework="TargetFramework=%(_AnnotatedSelfProjectReference.NearestTargetFramework)" />

</ItemGroup>

</Target>

<!-- Reference ContractProjectReference as the contract for facade generation, if no contract has been provided.-->

<Target Condition="'@(ResolvedMatchingContract)' == ''" Name="ResolveMatchingContract" AfterTargets="ResolvePackageDependenciesForBuild" DependsOnTargets="EnsureContractProjectReference">

<ItemGroup>

<ProjectReference Include="@(ContractProjectReference)">

<ReferenceOutputAssembly>false</ReferenceOutputAssembly>

<OutputItemType>ResolvedMatchingContract</OutputItemType>

</ProjectReference>

</ItemGroup>

</Target>

<PropertyGroup Condition="'$(HasReferenceAssembly)' == 'true'">

<TargetsForTfmSpecificContentInPackage>$(TargetsForTfmSpecificBuildOutput);AddReferenceAssemblyToPackage</TargetsForTfmSpecificContentInPackage>

</PropertyGroup>

<Target Name="AddReferenceAssemblyToPackage" DependsOnTargets="ResolveReferences">

<ItemGroup>

<TfmSpecificPackageFile Include="@(ResolvedMatchingContract)" PackagePath="ref/$(TargetFramework)" />

</ItemGroup>

</Target>

</Project>