EgonsoftHU.NuspecProperties.targets

<!--
Copyright © 2022 Gabor Csizmadia
This code is licensed under MIT license (see LICENSE for details)
-->
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="15.0">

  <UsingTask
    TaskName="EgonsoftHU_UpdateNuspecFile"
    TaskFactory="CodeTaskFactory"
    AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.Core.dll">
    <ParameterGroup>
      <NuspecFilePath Required="True" />
      <Owners />
      <Summary />
    </ParameterGroup>
    <Task>
      <Reference Include="System" />
      <Reference Include="System.Xml" />
      <Reference Include="System.Xml.Linq" />
      <Using Namespace="System" />
      <Using Namespace="System.Xml.Linq" />
      <Code Type="Fragment" Language="cs">
        <![CDATA[
          
          Log.LogMessage(MessageImportance.High, "");
          
          if (File.Exists(NuspecFilePath))
          {
            Log.LogMessage(MessageImportance.High, "The .nuspec file was found.");
          }
          else
          {
            Log.LogError("Could not find .nuspec file.");
            
            return false;
          }
          
          bool hasOwners = !String.IsNullOrWhiteSpace(Owners);
          bool hasSummary = !String.IsNullOrWhiteSpace(Summary);
          
          if (!hasOwners && !hasSummary)
          {
            Log.LogWarning("Both Owners and Summary MSBuild properties are empty. The .nuspec file will be unmodified.");
            
            return false;
          }
          
          Log.LogMessage(MessageImportance.High, "Loading .nuspec file...");
          var nuspec = XDocument.Load(NuspecFilePath);
          
          Log.LogMessage(MessageImportance.High, "Getting default XML namespace...");
          string xsdNamespace = nuspec.Root.GetDefaultNamespace().NamespaceName;
          
          Log.LogMessage(MessageImportance.High, "Getting <metadata> node...");
          var metadataNode = nuspec.Root.Descendants(XName.Get("metadata", xsdNamespace)).Single();
          
          if (hasOwners)
          {
            Log.LogMessage(MessageImportance.High, "Getting <authors> node...");
            var authorsNode = metadataNode.Descendants(XName.Get("authors", xsdNamespace)).Single();
            
            Log.LogMessage(MessageImportance.High, "Appending <owners> node...");
            authorsNode.AddAfterSelf(new XElement(XName.Get("owners", xsdNamespace)) { Value = Owners });
          }
          
          if (hasSummary)
          {
            Log.LogMessage(MessageImportance.High, "Getting <description> node...");
            var descriptionNode = metadataNode.Descendants(XName.Get("description", xsdNamespace)).Single();
            
            Log.LogMessage(MessageImportance.High, "Appending <summary> node...");
            descriptionNode.AddAfterSelf(new XElement(XName.Get("summary", xsdNamespace)) { Value = Summary });
          }
          
          Log.LogMessage(MessageImportance.High, "Saving .nuspec file...");
          nuspec.Save(NuspecFilePath);
          
          return true;
          
        ]]>
      </Code>
    </Task>
  </UsingTask>

  <Target Name="EgonsoftHU_UpdateNupkgFile" AfterTargets="Pack">

    <PropertyGroup>
      <PackageOutputPath Condition="$(PackageOutputPath) != ''">$([System.IO.Path]::GetFullPath('$(PackageOutputPath)'))</PackageOutputPath>
      
      <EgonsoftHU_NupkgFileName>$(PackageId).$(PackageVersion).nupkg</EgonsoftHU_NupkgFileName>
      <EgonsoftHU_NupkgFilePath>$([System.IO.Path]::Combine('$(PackageOutputPath)', '$(EgonsoftHU_NupkgFileName)'))</EgonsoftHU_NupkgFilePath>

      <EgonsoftHU_TempFolderName>$([System.Guid]::NewGuid().ToString('D'))</EgonsoftHU_TempFolderName>
      <EgonsoftHU_TempFolderPath>$([System.IO.Path]::Combine('$(PackageOutputPath)', '$(EgonsoftHU_TempFolderName)'))</EgonsoftHU_TempFolderPath>

      <EgonsoftHU_NuspecFileName>$(PackageId).nuspec</EgonsoftHU_NuspecFileName>
      <EgonsoftHU_NuspecFilePath>$([System.IO.Path]::Combine('$(EgonsoftHU_TempFolderPath)', '$(EgonsoftHU_NuspecFileName)'))</EgonsoftHU_NuspecFilePath>
    </PropertyGroup>

    <Message Importance="high" Text=" " />
    <Message Importance="high" Text="======================================" />
    <Message Importance="high" Text="Egonsoft.HU NuGet package updater v1.0" />
    <Message Importance="high" Text="======================================" />
    <Message Importance="high" Text="Author        : Gabor Csizmadia" />
    <Message Importance="high" Text="Description   : Update .nuspec file by adding owners and summary elements using Owners and Summary MSBuild properties." />
    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="Creating temporary folder..." />
    <Message Importance="high" Text="  Folder      : [$(EgonsoftHU_TempFolderPath)]" />
    <MakeDir
      Directories="$(EgonsoftHU_TempFolderPath)"
      />

    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="Unzipping .nupkg file to the temporary folder..." />
    <Message Importance="high" Text="  .nupkg file : [$(EgonsoftHU_NupkgFilePath)]" />
    <Message Importance="high" Text="  Folder      : [$(EgonsoftHU_TempFolderPath)]" />
    <Unzip
      SourceFiles="$(EgonsoftHU_NupkgFilePath)"
      DestinationFolder="$(EgonsoftHU_TempFolderPath)"
      />

    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="Updating .nuspec file..." />
    <Message Importance="high" Text="  .nuspec file: [$(EgonsoftHU_NuspecFilePath)]" />
    <Message Importance="high" Text="  Owners      : [$(Owners)]" />
    <Message Importance="high" Text="  Summary     : [$(Summary)]" />
    <EgonsoftHU_UpdateNuspecFile
      NuspecFilePath="$(EgonsoftHU_NuspecFilePath)"
      Owners="$(Owners)"
      Summary="$(Summary)"
      />

    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="Creating new .nupkg file from the contents of the temporary folder..." />
    <Message Importance="high" Text="  .nupkg file : [$(EgonsoftHU_NupkgFilePath)]" />
    <Message Importance="high" Text="  Folder      : [$(EgonsoftHU_TempFolderPath)]" />
    <Message Importance="high" Text=" " />
    <ZipDirectory
      SourceDirectory="$(EgonsoftHU_TempFolderPath)"
      DestinationFile="$(EgonsoftHU_NupkgFilePath)"
      Overwrite="True"
      />

    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="Deleting temporary folder..." />
    <Message Importance="high" Text="  Folder      : [$(EgonsoftHU_TempFolderPath)]" />
    <RemoveDir
      Directories="$(EgonsoftHU_TempFolderPath)"
      />

    <Message Importance="high" Text="--------------------------------------" />
    <Message Importance="high" Text="The new .nupkg file has been created..." />
    <Message Importance="high" Text="  .nupkg file : [$(EgonsoftHU_NupkgFilePath)]" />
    <Message Importance="high" Text="======================================" />

  </Target>
  
</Project>