Fancy PowerShell Prompt

function prompt {
    if(
        (New-Object Security.Principal.WindowsPrincipal ([Security.Principal.WindowsIdentity]::GetCurrent())
        ).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
            $IsAdmin = $true
    } else {
        $IsAdmin = $false
    }

    $UserDomain = $Env:COMPUTERNAME.ToLower()
    $UserName = $Env:USERNAME

    $CurrentPath = $Pwd.ToString()

    $CurrentPath = $CurrentPath.Replace($Env:USERPROFILE, "~")

    $Host.UI.RawUI.WindowTitle = "$Env:USERNAME@$UserDomain $CurrentPath - PowerShell"

    if ($IsAdmin) {
        $Host.UI.RawUI.WindowTitle += ' (Administrator)'
        $ForegroundColor = "Red"
    } else {
        $ForegroundColor = "DarkGray"
    }

    $CurrentDirectory = $CurrentPath.split('\')[-1]

    Write-Host "$UserName@${UserDomain}:" -ForegroundColor $ForegroundColor -NoNewline
    Write-Host $CurrentDirectory -ForegroundColor Gray -NoNewline
    Write-Host ">" -ForegroundColor $ForegroundColor -NoNewline
    return " "
}