function Get-BadPackages {
    <#
    .SYNOPSIS
        Determine if some packages are on the wrong servers. Utilized by Classify-Packages.

    .PARAMETER DebugMetadata
        Meta object used to determine what goes where.

    .PARAMETER PackageMetadata
        Packages object to populate.
    #>
    [CmdletBinding()]
    param(
        $DebugMetadata,
        $PackageMetadata
    )
    # Produce a list of bad packages on the wrong servers, to be uninstalled.
    if (!(Test-IsCollectionNullOrEmpty $DebugMetadata.WebServerPackages)) {
        $packages = @()
        foreach($package in $DebugMetadata.WebServerPackages) {
            if($null -ne $package) {
                ## if the package was found on the web server but it wasn't supposed to be on the web, remove it
                $packageNameLower = $package.Name.ToLower()
                $foundPackage = $DebugMetadata.ClassifiedPackagesMap.$packageNameLower
                if (($null -ne $foundPackage) -and (!$foundPackage.InstallToWeb)) {
                    $packages += $foundPackage
                    $packageMetadata.HasBadPackages = $true
                }
            }
        }
        $packages.ForEach({
            Add-Member -InputObject $_ -NotePropertyName "ActionType" -NotePropertyValue "Uninstall" -Force
            Add-Member -InputObject $_ -NotePropertyName "ActionReason" -NotePropertyValue "Wrong_Host_Type" -Force
        })
        $PackageMetadata.BadWebPackagesToUninstall = $packages
    }

    if (!(Test-IsCollectionNullOrEmpty $DebugMetadata.AppServerPackages)) {
        $packages = @()
        foreach ($package in $DebugMetadata.AppServerPackages) {
            if ($null -ne $package) {
                ## if the package was found on the app server but it wasn't supposed to be on the app, remove it
                $packageNameLower = $package.Name.ToLower()
                $foundPackage = $DebugMetadata.ClassifiedPackagesMap.$packageNameLower
                if (($null -ne $foundPackage) -and (!$foundPackage.InstallToApp)) {
                    $packages += $foundPackage
                    $PackageMetadata.HasBadPackages = $true
                }
            }
        }
        $packages.ForEach({
            Add-Member -InputObject $_ -NotePropertyName "ActionType" -NotePropertyValue "Uninstall" -Force
            Add-Member -InputObject $_ -NotePropertyName "ActionReason" -NotePropertyValue "Wrong_Host_Type" -Force
        })
        $PackageMetadata.BadAppPackagesToUninstall = $packages
    }

    if (!(Test-IsCollectionNullOrEmpty $DebugMetadata.MicServerPackages)) {
        $packages = @()
        foreach($package in $DebugMetadata.MicServerPackages) {
            if ($null -ne $package) {
                ## if the package was found on the mic server but it wasn't supposed to be on the mic, remove it
                $packageNameLower = $package.Name.ToLower()
                $foundPackage = $DebugMetadata.ClassifiedPackagesMap.$packageNameLower
                if (($null -ne $foundPackage) -and (!$foundPackage.InstallToMic)) {
                    $packages += $foundPackage
                    $PackageMetadata.HasBadPackages = $true
                }
            }
        }
        $packages.ForEach({
            Add-Member -InputObject $_ -NotePropertyName "ActionType" -NotePropertyValue "Uninstall" -Force
            Add-Member -InputObject $_ -NotePropertyName "ActionReason" -NotePropertyValue "Wrong_Host_Type" -Force
        })
        $PackageMetadata.BadMicPackagesToUninstall = $packages
    }

    if (!(Test-IsCollectionNullOrEmpty $DebugMetadata.FabServerPackages)) {
        $packages = @()
        foreach ($package in $DebugMetadata.FabServerPackages) {
            if ($null -ne $package) {
                ## if the package was found on the fab server but it wasn't supposed to be on the fab, remove it
                $packageNameLower = $package.Name.ToLower()
                $foundPackage = $DebugMetadata.ClassifiedPackagesMap.$packageNameLower
                if (($null -ne $foundPackage) -and (!$foundPackage.InstallToFab)) {
                    $packages += $foundPackage
                    $PackageMetadata.HasBadPackages = $true
                }
            }
        }
        $packages.ForEach({
            Add-Member -InputObject $_ -NotePropertyName "ActionType" -NotePropertyValue "Uninstall" -Force
            Add-Member -InputObject $_ -NotePropertyName "ActionReason" -NotePropertyValue "Wrong_Host_Type" -Force
        })
        $PackageMetadata.BadFabPackagesToUninstall = $packages
    }

    # Combine the mic/fab uninstalls into mics only. Mics/Fabs are mutually exclusive in the eyes of the deploy, might as well use one var.
    $PackageMetadata.BadMicPackagesToUninstall = (Select-UniqueServerPackages @($PackageMetadata.BadMicPackagesToUninstall, $PackageMetadata.BadFabPackagesToUninstall))
    $PackageMetadata.BadFabPackagesToUninstall = @()

    # NOTE: The bad packages lists are added to the web/app/mic uninstall lists below, where the mic uninstalls are separate from the app installs.

    return $PackageMetadata
}