Copy-SmbShareAccess

Function Copy-SmbShareAccess()
{
    [CmdletBinding(DefaultParameterSetName="BySmbShareName")]
    param
    (
        [Parameter(Mandatory=$true, ValueFromPipeline=$true, ParameterSetName="ByInputObject", DontShow=$true)]
        [CimInstance] $InputObject,

        [Parameter(Mandatory=$true, Position = 0, ParameterSetName="BySmbShareName")]
        [string] $Name,

        [Parameter(Mandatory=$true, Position = 0, ParameterSetName="ByInputObject")]
        [Parameter(Mandatory=$true, Position = 1, ParameterSetName="BySmbShareName")]
        [ValidateScript({
            # Must be a CimInstance or string.
            $_ -is [CimInstance] -or $_ -is [string]
        })]
        [object] $Destination,

        [Parameter(Mandatory=$false)]
        [switch] $Overwrite,

        [Parameter(Mandatory=$false)]
        [switch] $Force,

        [Parameter(Mandatory=$false)]
        [switch] $PassThru
    )
    Begin
    {
        if ($PSBoundParameters.ContainsKey("Name"))
        {
            $InputObject = Get-SmbShare -Name $Name
        }

        if ($Destination -is [string])
        {
            $Destination = Get-SmbShare -Name $Destination
        }
    }
    Process
    {
        $entries = New-Object 'System.Collections.Generic.List[object]'
        if ($InputObject.CimSystemProperties.ClassName -eq "MSFT_SmbShare" -and $InputObject.CimSystemProperties.Namespace -eq "ROOT/Microsoft/Windows/SMB")
        {
            $InputObject | Get-SmbShareAccess | ForEach-Object {
                $entries.Add($_)
            }
        }
        elseif ($InputObject.CimSystemProperties.ClassName -eq "MSFT_SmbShareAccessControlEntry" -and $InputObject.CimSystemProperties.Namespace -eq "ROOT/Microsoft/Windows/SMB")
        {
            $entries.Add($_)
        }
    }
    End
    {
        if ($Overwrite)
        {
            $Destination | Get-SmbShareAccess | ForEach-Object {
                Revoke-SmbShareAccess -InputObject $Destination -AccountName $_.AccountName -ErrorAction Stop -Force:$Force | Out-Null
            }
        }

        foreach ($entry in $entries)
        {
            $accessArgs = @{
                InputObject = $Destination
                AccountName = $entry.AccountName
                #ScopeName = $entry.ScopeName
                Force = $Force.ToBool()
            }
            if ($entry.AccessControlType -eq "Allow")
            {
                Grant-SmbShareAccess @accessArgs -AccessRight $entry.AccessRight | Out-Null
            }
            else
            {
                Block-SmbShareAccess @accessArgs | Out-Null
            }
        }

        if ($PassThru)
        {
            $Destination | Get-SmbShareAccess
        }
    }
}