[cmdletbinding(PositionalBinding = $true,
			   DefaultParameterSetName = "Default")]
param (
	[parameter(mandatory = $false,
			   ValueFromPipeline = $true,
			   ValueFromPipelineByPropertyName = $true,
			   Position = 0)]
	[alias('Comp', 'Name', 'DNSHostName')]
	[string[]]$ComputerName = 'localhost'
)

BEGIN {
	#Requires -Version 3

	$ErrorActionPreference = [System.Management.Automation.ActionPreference]::Stop

	$objResults = @()

	$SizeInGB = @{ Name = "SizeGB"; Expression = { "{0:N2}" -f ($_.Size/1GB) } }
	$FreespaceInGB = @{ Name = "FreespaceGB"; Expression = { "{0:N2}" -f ($_.Freespace/1GB) } }
	$PercentFree = @{ name = "PercentFree"; Expression = { [int](($_.FreeSpace/$_.Size) * 100) } }

} # BEGIN

PROCESS {
	foreach ($c in $ComputerName) {
		if (Test-Connection -ComputerName $c -Count 2 -Quiet) {
			try {
				Write-Verbose -Message "Working on $c"

				$diskQuery = $null

				$diskQuery = Get-WmiObject -ComputerName $c -Query "SELECT SystemName,Caption,VolumeName,Size,Freespace,DriveType FROM win32_logicaldisk WHERE drivetype = 3" |
				Select-Object SystemName, Caption, VolumeName, $SizeInGB, $FreespaceInGB, $PercentFree

				foreach ($item in $diskQuery) {
					$objDiskInfo = @()

					$objDiskInfo = [PSCustomObject] @{
						SystemName = $item.SystemName
						DriveLetter = $item.Caption
						VolumeName = $item.VolumeName
						SizeGB = $item.SizeGB
						FreeSpaceGB = $item.FreeSpaceGB
						PercentFree = $item.PercentFree
					} # $objDiskInfo

					$objResults += $objDiskinfo
				} # foreach

			} catch {
				Write-Warning -Message "$c - $_"
			} # try/catch

		} else {
			Write-Warning -Message "$c - Unreachable via Ping"
		} # if/else
	} # foreach

} # PROCESS

END {
	$objResults
} # END