Clean up nuget artifacts

CleanUpForNuget.ps1

# DO NOT CALL THIS DIRECTLY!  IT SHOULD ONLY BE CALLED BY THE BUILD SYSTEM.
# IF YOU CALL THIS DIRECTLY then the projects will have all of their nuget references removed.
#
# For the template to be able to install the nuget stuff, it needs it to be in a state as if
# it has never been installed.  This script removes:
#     • The packages.config files
#     • Removes <None Include="packages.config" /> from any csproj files
#     • Compiler references that are added by nuget
#     • Removes any references that have a hint path that contains '..\packages\

# Find all packages.config files and delete them
get-childitem ./ -include packages.config -recurse | foreach ($_) {remove-item $_.fullname -force}

# Find all .csproj files 
$csProjFiles = get-childitem ./ -include *.csproj -recurse 

# Remove the packages.config include from the csproj files.
$csProjFiles | foreach ($_) {$currentFile = $_; (get-content $_) | Where-Object {$_ -notmatch 'Include="packages.config"'} | Set-Content $currentFile -force}

# Remove any compiler references added by the compiler nuget packages.
$csProjFiles | foreach ($_) {$currentFile = $_; (get-content $_) | Where-Object {$_ -notmatch 'build\\Microsoft.Net.Compilers.props'} | Set-Content $currentFile -force}
$csProjFiles | foreach ($_) {$currentFile = $_; (get-content $_) | Where-Object {$_ -notmatch 'build\\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props'} | Set-Content $currentFile -force}

# Remove any references that have a hint path that contains '..\packages\'
foreach ($csProjFile in $csProjFiles){
	[xml] $csProjFileXml = get-content $csProjFile;
	foreach ($itemGroup in $csProjFileXml.Project.ItemGroup) {	
		foreach ($reference in $itemGroup.Reference) {
			foreach ($hintPath in $reference.HintPath){
				if ($hintPath -like '*..\packages\*'){
					$itemGroup.RemoveChild($reference)
				}			
			}			
		}
	}
	$csProjFileXml.Save($csProjFile)
}