Octopus Deploy OctoPack.targets file that gets the assembly version to create the deploy package

OctoPack.targets

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <BuildDependsOn>
      $(BuildDependsOn);
      OctopusEstablishContext
    </BuildDependsOn>
  </PropertyGroup>
  
  <PropertyGroup>
    <_CopyWebApplicationDependsOn>
      $(_CopyWebApplicationDependsOn);
      OctopusEstablishContext
    </_CopyWebApplicationDependsOn>
  </PropertyGroup>

  <!--
  Configuration properties - you can override these from the command line
  -->
  <PropertyGroup>
    <OctopusProjectRoot Condition="'$(OctopusProjectRoot)' == ''">$(MSBuildProjectDirectory.TrimEnd('\'))</OctopusProjectRoot>
    <OctopusPackageConfiguration Condition="'$(OctopusPackageConfiguration)' == ''">Release</OctopusPackageConfiguration>
    <OctopusNuSpecFileName Condition="'$(OctopusNuSpecFileName)' == ''">$(MSBuildProjectName.Replace('.csproj', '').Replace('.vbproj', '')).nuspec</OctopusNuSpecFileName>
    <OctopusTemporaryDirectory Condition="'$(OctopusTemporaryDirectory)' == ''">$(OutputPath.TrimEnd('\'))\NuGet-temp</OctopusTemporaryDirectory>
    <OctopusPackageVersion Condition="'$(OctopusPackageVersion)' == ''">1.0.0</OctopusPackageVersion>
    <OctopusWebConfigFile Condition="'$(OctopusWebConfigFile)' == ''">$(OctopusProjectRoot)\Web.config</OctopusWebConfigFile>
    <OctopusOutputDirectory Condition="'$(OctopusOutputDirectory)' == ''">$(OutputPath)</OctopusOutputDirectory>
  </PropertyGroup>

  <!-- 
  Establsh Context
  This target figures out whether this is a web project or normal application, and whether it is being built in release mode. 
  It then discovers the location of NuGet.exe.
  -->
  <Target Name="OctopusEstablishContext">
    <PropertyGroup>
      <OctopusContextIsReleaseBuild Condition="'$(OctopusPackageConfiguration)' == '$(Configuration)' Or '$(WebProjectOutputDir)' == ''">True</OctopusContextIsReleaseBuild>
      <OctopusContextIsWebApplication Condition="Exists('$(OctopusWebConfigFile)')">True</OctopusContextIsWebApplication>
    </PropertyGroup>

    <Message Text="IsReleaseBuild: $(OctopusContextIsReleaseBuild)" />
    <Message Text="IsWebApp: $(OctopusContextIsWebApplication)" />
    <Message Text="This is not a $(OctopusPackageConfiguration) build, so any Octopus packaging will be skipped" Importance="High" Condition="'$(OctopusContextIsReleaseBuild)' != 'True'" />
    <Message Text="This is a $(OctopusPackageConfiguration) build of a web application, so an Octopus package will be created" Importance="High" Condition="'$(OctopusContextIsReleaseBuild)' == 'True' And '$(OctopusContextIsWebApplication)' == 'True'" />
    <Message Text="This is a $(OctopusPackageConfiguration) build of an executable, so an Octopus package will be created" Importance="High" Condition="'$(OctopusContextIsReleaseBuild)' == 'True' And '$(OctopusContextIsWebApplication)' != 'True'" />
    <Message Text="OctopusProjectRoot:  $(OctopusProjectRoot)" />
    <Message Text="OctopusNuGetExePath: $(OctopusNuGetExePath)" />

    <CallTarget Targets="OctopusPackageWeb" Condition="'$(OctopusContextIsReleaseBuild)' == 'True' And '$(OctopusContextIsWebApplication)' == 'True'" />
    <CallTarget Targets="OctopusPackageApp" Condition="'$(OctopusContextIsReleaseBuild)' == 'True' And '$(OctopusContextIsWebApplication)' != 'True'" />
  </Target>
  
  <!--
  Find NuGet.exe and the project NuSpec
  -->
  <Target Name="OctopusFindNuGetSettings">
    <Error
      Code="OCTO: 1001"
      Text="OctoPack: Expected to find a NuGet spec file named $(OctopusNuSpecFileName) under $(MSBuildProjectDirectory). You can fix this error by adding a NuGet spec file with that name, or override the name of the file by setting a property called OctopusNuSpecFileName in your project."
      Condition="!Exists('$(OctopusNuSpecFileName)')"
      />
      
    <ItemGroup>
        <FindNuGet Include="$(OctopusNuGetExePath)" />
        <FindNuGet Include="$(MSBuildThisFileDirectory)..\tools\NuGet.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\packages\OctoPack*\tools\NuGet.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\.nuget\NuGet*.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\..\packages\OctoPack*\tools\NuGet.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\..\.nuget\NuGet*.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\..\..\packages\OctoPack*\tools\NuGet.exe" />
        <FindNuGet Include="$(OctopusProjectRoot)\..\..\.nuget\NuGet*.exe" />
    </ItemGroup>
    
    <PropertyGroup>        
        <NuGetExe Condition="'$(OctopusNuGetExePath)' == ''">%(FindNuGet.Identity)</NuGetExe>
        <NuGetExe Condition="'$(OctopusNuGetExePath)' != ''">$(OctopusNuGetExePath)</NuGetExe>
    </PropertyGroup>

    <Error
      Code="OCTO: 1002"
      Text="OctoPack: Could not locate NuGet.exe. Please add a NuGet package reference for NuGet.CommandLine, or set the property OctopusNuGetExePath in your project. Current search path is: $(NuGetExe)"
      Condition="!Exists('$(NuGetExe)')"
      />

    <Message Importance="High" Text="NuGet.exe found: $(NuGetExe)"/>
  </Target>

  <!--
  Packaging Web Applications
  -->
  <Target Name="OctopusPackageWeb" DependsOnTargets="$(OnBefore_CopyWebApplicationDefault);OctopusFindNuGetSettings">
    <Message Text="Project was published to: $(OutDir)" />
    <Copy SourceFiles="$(OctopusNuSpecFileName)" DestinationFolder="$(WebProjectOutputDir)" />

    <MakeDir Directories="$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))"/>

    <GetAssemblyIdentity
    AssemblyFiles="$(WebProjectOutputDir)\bin\$(MSBuildProjectName.Replace('.csproj', '').Replace('.vbproj', '')).dll">
      <Output
          TaskParameter="Assemblies"
          ItemName="AssemblyIdentities"/>
    </GetAssemblyIdentity>

    <Exec Command='"$(NuGetExe)" pack "$(WebProjectOutputDir.TrimEnd(&quot;\&quot;))\$(OctopusNuSpecFileName)" -OutputDirectory "$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))"  -basePath "$(WebProjectOutputDir.TrimEnd(&quot;\&quot;))"  -Version "%(AssemblyIdentities.Version)" -NoPackageAnalysis' />

    <ItemGroup>
        <PackagesBuilt Include="$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))\*.nupkg" />
    </ItemGroup>

    <Message Importance="High" Text="Copy packages: @(PackagesBuilt) to $(OutDir)"/>

    <Copy SourceFiles="@(PackagesBuilt)" DestinationFolder="$(OutDir)" /> 
  </Target>
  
  <!--
  Packaging windows services and console applications
  -->
  <Target Name="OctopusPackageApp" DependsOnTargets="OctopusFindNuGetSettings">
    <RemoveDir Directories="$(OctopusTemporaryDirectory)" ContinueOnError="true" />
    <MakeDir Directories="$(OctopusTemporaryDirectory)" />



    <Message Text="Files version: %(AssemblyIdentities.Version)"/>

    <ItemGroup>
      <ContentToPackage Include="$(OutputPath)\**\*" Exclude="*.nupkg" />
      <ContentToPackage Include="$(OutDir)\**\*" Exclude="*.nupkg" />
    </ItemGroup>
    <Copy SourceFiles="@(ContentToPackage)"
          DestinationFiles="@(ContentToPackage->'$(OctopusTemporaryDirectory)\%(RecursiveDir)%(Filename)%(Extension)')"
      />

    <Copy SourceFiles="$(OctopusNuSpecFileName)" DestinationFolder="$(OctopusTemporaryDirectory)" />

    <MakeDir Directories="$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))"/>

    <GetAssemblyIdentity
    AssemblyFiles="$(OctopusTemporaryDirectory)\$(MSBuildProjectName.Replace('.csproj', '').Replace('.vbproj', '')).exe">
      <Output
          TaskParameter="Assemblies"
          ItemName="AssemblyIdentities"/>
    </GetAssemblyIdentity>
      
    <Exec Command='"$(NuGetExe)" pack "$(OctopusTemporaryDirectory)\$(OctopusNuSpecFileName)" -OutputDirectory "$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))" -basePath "$(OctopusTemporaryDirectory)" -Version "%(AssemblyIdentities.Version)" -NoPackageAnalysis' />

    <ItemGroup>
        <PackagesBuilt Include="$(OctopusOutputDirectory.TrimEnd(&quot;\&quot;))\*.nupkg" />
    </ItemGroup>

    <Message Importance="High" Text="Copy packages: @(PackagesBuilt) to $(OutDir)"/>

    <Copy SourceFiles="@(PackagesBuilt)" DestinationFolder="$(OutDir)" /> 
  </Target>
</Project>