#requires -version 2.0

# -----------------------------------------------------------------------------
# Script: EverythingPrompt.ps1
# Author: Jeffery Hicks
#    http://jdhitsolutions.com/blog
# Date: 10/29/2010
# Keywords: Prompt, WMI
# Comments:
#
# -----------------------------------------------------------------------------


Function prompt {

#add global variable if it doesn't already exist
if (-Not $global:LastCheck) 
{
	$global:LastCheck=Get-Date
    $global:cdrive=Get-WMIObject -query "Select Freespace,Size from win32_logicaldisk where deviceid='c:'"
}

#only refresh disk information once every 15 minutes
$min=(New-TimeSpan $Global:lastCheck).TotalMinutes
if ($min -ge 15) 
{
    $global:cdrive=Get-WMIObject -query "Select Freespace,Size from win32_logicaldisk where deviceid='c:'"
    $global:LastCheck=Get-Date
}

[int]$freeMem=(Get-Wmiobject -query "Select FreeAndZeroPageListBytes from Win32_PerfFormattedData_PerfOS_Memory").FreeAndZeroPageListBytes/1mb
$cpu=(gwmi win32_processor).loadpercentage
$pcount=(Get-Process).Count
$diskinfo="{0:N2}" -f (($global:cdrive.freespace/1gb)/($global:cdrive.size/1gb)*100)
#get uptime
$time=Get-WmiObject -class Win32_OperatingSystem
$t=$time.ConvertToDateTime($time.Lastbootuptime)
[TimeSpan]$uptime=New-TimeSpan $t $(get-date)
$up="$($uptime.days)d $($uptime.hours)h $($uptime.minutes)m $($uptime.seconds)s"

#$text="CPU:"+$cpu+"% Procs:"+$pcount+$diskinfo+ " "+([char]0x25b2)+$up +" "+(Get-Date -format g)
$text="CPU:{0}% FreeMem:{6}MB Procs:{1} Free C:{2}% {3}{4} {5}"  -f $cpu,$pcount,$diskinfo,([char]0x25b2),$up,(Get-Date -format g),$FreeMem

$myPrompt=[char]0x250c
$myPrompt+=([char]0x2500).ToString()*$text.length
$myPrompt+=[char]0x2510
$myPrompt+="`n"
$myPrompt+=([char]0x2502)+$text+([char]0x2502)
$myPrompt+="`n"
$myPrompt+=[char]0x2514
$myPrompt+=([char]0x2500).ToString()*$text.length
$myPrompt+=[char]0x2518
Write-Host $myPrompt -fore Green 

#get history ID
$hid=(Get-History -count 1).id+1
Write-Host "$hid PS>" -nonewline

#set the PowerShell session time, computername and current location in the title bar

#get start time for the current PowerShell session
#$pid is a special variable for the current PowerShell process ID
[datetime]$psStart=(get-Process -id $pid).StartTime
    
$ts=(Get-Date) - $psStart
#strip off the millisecond part with Substring().  The
#millisecond part will come after the last period
$s=$ts.ToString()
$elapsed=$s.Substring(0,$s.LastIndexOf(".")) 

$title="[{0}{1}{2}]  {3}" -f $elapsed,([char]0x25ba),$env:computername,(Get-Location)
$host.ui.rawui.WindowTitle=$title
#the function's actual return is nothing
return " "
}