(GH-13) Uninstall script

Remove the existing site files minus App_Data and web.config.

nuget/tools/chocolateyuninstall.ps1

@@ -0,0 +1,21 @@
+$packageName   = $env:ChocolateyPackageName
+$webInstallDir = Join-Path (Get-ToolsLocation) $packageName
+
+if (Test-Path $webInstallDir) {
+  try {
+    Write-Debug "Removing all but the App_Data folder in the existing '$webInstallDir'"
+    Get-ChildItem -Path "$webInstallDir" -Recurse | % {
+      if ($_.FullName -match 'App_Data' -or $_.FullName -match 'Web.config') {
+        Write-Debug " - Skipping $($_.FullName)"
+      } else {
+        Write-Debug " - Removing $($_.FullName)"
+        Remove-Item $_.FullName -Recurse -Force -ErrorAction SilentlyContinue
+      }
+    }
+  }
+  catch {
+    Write-Warning "Had an error deleting files from '$webInstallDir'. You will need to manually remove files. Error: $_"
+  }
+
+  Write-Warning "Removed all from '$webInstallDir' except for App_Data. You should inspect and remove packages/logs manually."
+}