<#
.SYNOPSIS
Gathers various pieces of information about a system either local or remote.

.DESCRIPTION
Exports all of the info to various CSV files on the local system.

.EXAMPLE

.\gatherinfo.ps1 -ComputerName DC1 -RunningProcesses -ComputerInfo


.PARAMETER [-ComputerName]
Array of systems to run the script against.

.PARAMETER [-RunningProcesses]
Fetches the current running processes

.PARAMETER [-ComputerInfo]
Fetches various computer info
.PARAMETER [-Services]
Fetches current running services

.PARAMETER [-Updates]
Fetches currently installed updates

.PARAMETER [-LocalUsers]
Fetches local users on the system

.PARAMETER [-DomainUsers]
Fetches domain users
#>

param (
    [string[]] $ComputerName = $env:COMPUTERNAME,
    [switch]$RunningProcesses,
    [switch]$ComputerInfo,
    [switch]$Services,
    [switch]$Updates,
    [switch]$LocalUsers,
    [switch]$DomainUsers

)


if ($RunningProcesses.IsPresent) {Get-Process -ComputerName $ComputerName | Export-CSV -Path "1_$($ComputerName)RunningProcesses.csv"}
if ($ComputerInfo.IsPresent) {

Invoke-Command -ComputerName $ComputerName -ScriptBlock
{
    $Domain = (Get-WmiObject Win32_ComputerSsytem).Domain
    $CPUMan = (Get-WmiObject Win32_Processor).Manufacturer
    $SystemMan = (Get-WmiObject -Class win32_computersystem).Manufacturer
    $Version = (Get-WmiObject -Class win32_operatingsystem).version
    $Memory = (Get-WmiObject -Class win32_computersystem).TotalPhysicalMemory
    $Speed = (Get-WmiObject -Class win32_processor).MaxClockSpeed
    $Model = (Get-WmiObject -Class Win32_ComputerSystem).Model
    $Name = (Get-WmiObject -Class Win32_ComputerSystem).Name


    $info = New-Object psobject
    $info | Add-Member -MemberType NoteProperty -name Domain -Value $Domain
    $info | Add-Member -MemberType NoteProperty -name CPUManufacturer $CPUMan
    $info | Add-Member -MemberType NoteProperty -name SystemManufacturer $SystemMan
    $info | Add-Member -MemberType NoteProperty -name Version $Version
    $info | Add-Member -MemberType NoteProperty -name Memory $SystemMan
    $info | Add-Member -MemberType NoteProperty -name MaxClockSpeed $Speed
    $info | Add-Member -MemberType NoteProperty -name Model $Model
    $info | Add-Member -MemberType NoteProperty -name ComputerName $Name

    $info | Export-CSV -Path "2_$($ComputerName)ComputerInfo.csv"

}

}
if ($Services.IsPresent) {Get-Process -ComputerName $ComputerName | Export-CSV -Path "3_$($ComputerName)RunningServices.csv"}
if ($Updates.IsPresent) {Get-Hotfix -ComputerName $ComputerName | Export-CSV -Path "4_$($ComputerName)Updates.csv"}
if ($LocalUsers.IsPresent) {Get-WmiObject -Class Win32_UserAccount -Filter "LocalAccount=$True" | Export-CSV -Path "5_$($ComputerName)LocalUsers.csv"}
if ($DomainUsers.IsPresent) {Get-WmiObject -Class Win32_UserAccount -Filter "LocalAccount=$False" | Export-CSV -Path "6_$($ComputerName)DomainUsers.csv"}