import-PowerCLI.ps1

<#
.SYNOPSIS
   Loading of all VMware modules and power snapins
.DESCRIPTION

.EXAMPLE
    One or more examples for how to use this script
.NOTES
    File Name          : import-PowerCLI.ps1
    Author             : Bart Lievers
    Prerequisite       : <Preruiqisites like
                         Min. PowerShell version : 2.0
                         PS Modules and version :
                            PowerCLI - 5.5
    License            : MIT License
    Last Edit          : BL - 22-11-2016
#>
[CmdletBinding()]

Param(
)

Begin{

}

Process{
    #-- make up inventory and check PowerCLI installation
    $RegisteredModules=Get-Module -Name vmware* -ListAvailable -ErrorAction ignore | % {$_.Name}
    $RegisteredSnapins=get-pssnapin -Registered vmware* -ErrorAction Ignore | %{$_.name}
    if (($RegisteredModules.Count -eq 0 ) -and ($RegisteredSnapins.count -eq 0 )) {
        #-- PowerCLI is not installed
        if ($log) {$log.warning("Cannot load PowerCLI, no VMware Powercli Modules and/or Snapins found.")}
        else {
        write-warning "Cannot load PowerCLI, no VMware Powercli Modules and/or Snapins found."}
        #-- exit function
        return $false
    }

    #-- load modules
    if ($RegisteredModules) {
        #-- make inventory of already loaded VMware modules
        $loaded = Get-Module -Name vmware* -ErrorAction Ignore | % {$_.Name}
        #-- make inventory of available VMware modules
        $registered = Get-Module -Name vmware* -ListAvailable -ErrorAction Ignore | % {$_.Name}
        #-- determine which modules needs to be loaded, and import them.
        $notLoaded = $registered | ? {$loaded -notcontains $_}

        foreach ($module in $registered) {
            if ($loaded -notcontains $module) {
                Import-Module $module
            }
        }
    }

    #-- load Snapins
    if ($RegisteredSnapins) {      
        #-- Exlude loaded modules from additional snappins to load
        $snapinList=Compare-Object -ReferenceObject $RegisteredModules -DifferenceObject $RegisteredSnapins | ?{$_.sideindicator -eq "=>"} | %{$_.inputobject}
        #-- Make inventory of loaded VMware Snapins
        $loaded = Get-PSSnapin -Name $snapinList -ErrorAction Ignore | % {$_.Name}
        #-- Make inventory of VMware Snapins that are registered
        $registered = Get-PSSnapin -Name $snapinList -Registered -ErrorAction Ignore  | % {$_.Name}
        #-- determine which snapins needs to loaded, and import them.
        $notLoaded = $registered | ? {$loaded -notcontains $_}

        foreach ($snapin in $registered) {
            if ($loaded -notcontains $snapin) {
                Add-PSSnapin $snapin
            }
        }
    }
    #-- show loaded vmware modules and snapins
    if ($RegisteredModules) {get-module -Name vmware* | select name,version,@{N="type";E={"module"}} | ft -AutoSize}
      if ($RegisteredSnapins) {get-pssnapin -Name vmware* | select name,version,@{N="type";E={"snapin"}} | ft -AutoSize}

}

End{

}