Microsoft.NET.Sdk.StaticWebAssets.Pack.CrossTargeting.targets

<!--
***********************************************************************************************
Microsoft.NET.Sdk.StaticWebAssets.targets

WARNING:  DO NOT MODIFY this file unless you are knowledgeable about MSBuild and have
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          impossible to load or build your projects from the command-line or the IDE.

Copyright (c) .NET Foundation. All rights reserved.
***********************************************************************************************
-->

<Project ToolsVersion="14.0">

  <UsingTask
    TaskName="Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAssetsReadPackManifest"
    AssemblyFile="$(StaticWebAssetsSdkBuildTasksAssembly)"
    Condition="'$(StaticWebAssetsSdkBuildTasksAssembly)' != ''" />

  <UsingTask
    TaskName="Microsoft.AspNetCore.StaticWebAssets.Tasks.ResolveStaticWebAssetsEffectiveTargetFramework"
    AssemblyFile="$(StaticWebAssetsSdkBuildTasksAssembly)"
    Condition="'$(StaticWebAssetsSdkBuildTasksAssembly)' != ''" />

  <UsingTask
    TaskName="Microsoft.AspNetCore.StaticWebAssets.Tasks.ReadStaticWebAssetsManifestFile"
    AssemblyFile="$(StaticWebAssetsSdkBuildTasksAssembly)"
    Condition="'$(StaticWebAssetsSdkBuildTasksAssembly)' != ''" />

  <PropertyGroup>

    <GenerateNuspecDependsOn>
      CrossTargetingIncludeStaticWebAssets;
      $(GenerateNuspecDependsOn)
    </GenerateNuspecDependsOn>

    <CrossTargetingIncludeStaticWebAssetsDependsOn Condition="'$(NoBuild)' != 'true' and '$(GeneratePackageOnBuild)' != 'true'">
      DispatchToInnerBuilds;$(CrossTargetingIncludeStaticWebAssetsDependsOn);
    </CrossTargetingIncludeStaticWebAssetsDependsOn>

  </PropertyGroup>

  <!--
    We have multiple target frameworks:
     * We do nothing inside the inner builds.
     * We look at the TargetFrameworks and pick the one with the 'highest' static web assets version.
       * For example, if you have netstandard2.0 and net6.0, one is swa V1 and the other is swa V2. When packing
         we always want to use V2, since the metadata is backwards compatible.
      * We resolve the path for the pack manifest generated for that target version as well as the static web assets
        build manifest.
      * We remove any static web asset from the content/none item groups as we are in charge of the packing process.
      * We read the pack manifest and add the static web assets as content with the appropriate package path.
   -->

  <Target Name="CrossTargetingIncludeStaticWebAssets"
    DependsOnTargets="$(CrossTargetingIncludeStaticWebAssetsDependsOn)">

    <ItemGroup>
      <_StaticWebAssetsTargetFrameworkCandidate Include="$(TargetFrameworks)">
      </_StaticWebAssetsTargetFrameworkCandidate>
      <_StaticWebAssetTargetFramework Include="@(_StaticWebAssetsTargetFrameworkCandidate->Trim()->Distinct())">
        <TargetFrameworkIdentifier>$([MSBuild]::GetTargetFrameworkIdentifier(%(_StaticWebAssetsTargetFrameworkCandidate.Identity)))</TargetFrameworkIdentifier>
        <TargetFrameworkVersion>$([MSBuild]::GetTargetFrameworkVersion(%(_StaticWebAssetsTargetFrameworkCandidate.Identity)))</TargetFrameworkVersion>
      </_StaticWebAssetTargetFramework>
    </ItemGroup>

    <ResolveStaticWebAssetsEffectiveTargetFramework
      TargetFrameworks="@(_StaticWebAssetTargetFramework)"
    >
      <Output TaskParameter="EffectiveTargetFramework" PropertyName="_StaticWebAssetsEffectiveTargetFramework" />
    </ResolveStaticWebAssetsEffectiveTargetFramework>

    <!-- Resolve the build and pack manifest paths for the chosen target framework -->

    <MSBuild Projects="$(MSBuildProjectFullPath)"
      Condition="'$(_StaticWebAssetsEffectiveTargetFramework)' != ''"
      Targets="ResolveStaticWebAssetsManifestPaths"
      SkipNonexistentTargets="true"
      Properties="TargetFramework=$(_StaticWebAssetsEffectiveTargetFramework)"
      BuildInParallel="$(BuildInParallel)"
    >
      <Output TaskParameter="TargetOutputs" ItemName="_ManifestPaths" />
    </MSBuild>

    <PropertyGroup>
      <StaticWebAssetBuildManifestPath>%(_ManifestPaths.BuildManifest)</StaticWebAssetBuildManifestPath>
      <StaticWebAssetPackManifestPath>%(_ManifestPaths.PackManifest)</StaticWebAssetPackManifestPath>
    </PropertyGroup>

    <!-- Clean up static web assets from existing item groups -->

    <ReadStaticWebAssetsManifestFile
      Condition="'$(StaticWebAssetBuildManifestPath)' != '' and Exists('$(StaticWebAssetBuildManifestPath)')"
      ManifestPath="$(StaticWebAssetBuildManifestPath)">
      <Output TaskParameter="Assets" ItemName="_CachedBuildStaticWebAssets" />
    </ReadStaticWebAssetsManifestFile>

    <ItemGroup>
      <Content Remove="@(_CachedBuildStaticWebAssets->'%(OriginalItemSpec)')" />
      <None Remove="@(_CachedBuildStaticWebAssets->'%(OriginalItemSpec)')" />
    </ItemGroup>

    <!-- Add assets as content items to be packed -->

    <StaticWebAssetsReadPackManifest
      Condition="'$(StaticWebAssetPackManifestPath)' != '' and Exists('$(StaticWebAssetPackManifestPath)')"
      ManifestPath="$(StaticWebAssetPackManifestPath)"
    >
      <Output TaskParameter="Files" ItemName="_StaticWebAssetsFilesToPack" />
      <!-- This is only used by V1 static web assets as they don't generate a build manifest -->
      <Output TaskParameter="AdditionalElementsToRemoveFromPacking" ItemName="_LegacyAssetsToRemoveFromPacking" />
    </StaticWebAssetsReadPackManifest>

    <ItemGroup>
      <Content Remove="@(_LegacyAssetsToRemoveFromPacking)" />
      <None Remove="@(_LegacyAssetsToRemoveFromPacking)" />

      <Content Include="@(_StaticWebAssetsFilesToPack)"
        Pack="true"
        CopyToOutputDirectory="Never"
        CopyToPublishDirectory="Never" />
    </ItemGroup>

  </Target>

</Project>