Class DirectoryStat {

[string]$Name

[string]$Path

[int64]$FileCount

[int64]$FileSize

[string]$Parent

[string]$Computername = [System.Environment]::MachineName

} #close class definition

#function that use the class

Function Get-DirectoryInfo {

[cmdletbinding()]

[alias("dw")]

[OutputType("DirectoryStat")]

Param(

[Parameter(Position = 0,HelpMessage = "Specify the top level path.")]

[ValidateScript( { (Test-Path $_ ) -AND ((Get-Item $_).psprovider.name -eq "FileSystem") })]

[string]$Path = ".",

[Parameter(HelpMessage = " The Depth parameter determines the number of subdirectory

levels to recursively query.")]

[int32]$Depth

)

Begin {

Write-Verbose "Starting $($myinvocation.MyCommand)"

#initialize a collection to hold the results

$data = [System.Collections.Generic.list[object]]::new()

function _newDirectoryStat {

[CmdletBinding()]

Param(

[Parameter(ValueFromPipelineByPropertyName, Mandatory)]

[string]$PSPath

)

Begin {}

Process {

$path = Convert-Path $PSPath

$name = Split-Path -Path $Path -Leaf

$stat = Get-ChildItem -Path $path -File | Measure-Object -Property Length -Sum

$ds = [DirectoryStat]::New()

$ds.Name = $name

$ds.Path = $Path

$ds.FileCount = $stat.Count

$ds.FileSize = $stat.Sum

$ds.Parent = (Get-Item -Path $path).Parent.FullName

$ds

}

end {}

}

Write-Verbose "PSBoundParameters"

Write-Verbose ($PSBoundParameters | Out-String)

#build a hashtable of parameters to splat to Get-ChildItem

$gciParams = @{

Path = $Path

Directory = $True

}

if ($PSBoundParameters["Depth"]) {

$gciParams.Add("Depth", $PSBoundParameters["Depth"])

$gciParams.Add("Recurse",$True)

}

} #begin

Process {

Write-Verbose "Processing $(Convert-Path $Path)"

#add each result as a DirectoryStat object to the collection

$data.Add((Get-ChildItem @gciParams | _newDirectoryStat))

} #Process

End {

<#

Use ForEach-Object to write individual DirectoryStat objects

to the pipeline. Otherwise the output from this command is System.Object[].

I'll also pre-sort the results alphabetically.

#>

$data | ForEach-Object {$_} | Sort-Object -Property Parent, Name

Write-Verbose "Ending $($myinvocation.MyCommand)"

}

}

#define additional type extensions

Update-TypeData -TypeName DirectoryStat -MemberType ScriptProperty -MemberName NameCount -value {"$($this.name) [$($this.filecount)]"} -force

Update-TypeData -TypeName DirectoryStat -MemberType ScriptProperty -MemberName NameSize -Value { "$($this.name) [$($this.filesize)]" } -force

Update-TypeData -TypeName DirectoryStat -DefaultDisplayProperty NameCount -force

Update-TypeData -TypeName DirectoryStat -DefaultDisplayPropertySet Path,Name,FileCount,FileSize,Parent -Force