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<#
.SYNOPSIS
  Create AD Group
.DESCRIPTION
  Create an AD Group with a member group when specified.
.INPUTS
  CSV-file with AD groups, group type, ou and member which should be created.

  GroupName,GroupType,GroupLocation 
  GG_DATA_AS0P1011_DIS_OHW_LBZ_RW,Global,"OU=Data,OU=GG,OU=Groepen,OU=Organisatie",
  LG_DATA_AS0P1011_DIS_OHW_LBZ_RW,DomainLocal,"OU=Data,OU=LG,OU=Groepen,OU=Organisatie",GG_DATA_AS0P1011_DIS_OHW_LBZ_RW
  
.OUTPUTS

.NOTES
  Version:        1.1
  Author:         Ivo Dijkgraaf
  Creation Date:  16-11-2016
  
.EXAMPLE
  
#>

#---------------------------------------------------------[Initialisations]--------------------------------------------------------

Import-Module ActiveDirectory

#Dot Source required Function Libraries
. "P:\PowerShell\Functions\Default_Functions.ps1"

#----------------------------------------------------------[Declarations]----------------------------------------------------------

# Path where the script is run from
$scriptPath = Get-ScriptPath

$importFile = "$scriptPath\ADGroups.csv"
$groupsCsv = Import-Csv -Path $importFile

#-----------------------------------------------------------[Execution]------------------------------------------------------------

#Get Domain Base 
$searchbase = Get-ADDomain | ForEach {  $_.DistinguishedName } 
 
#Loop through all items in the CSV 
ForEach ($group In $groupsCsv) 
{ 
  #Check if the OU exists 
  $check = [ADSI]::Exists("LDAP://$($group.GroupLocation),$($searchbase)") 
  
   
  If ($check -eq $True) 
  { 
    # Create the Group
    Try 
    { 
      #Check if the Group already exists 
      $exists = Get-ADGroup $group.GroupName 
      Write-Host "Group $($group.GroupName) alread exists! Group creation skipped!" 
    } 
    Catch 
    { 
      #Create the group if it doesn't exist 
      $create = New-ADGroup -Name $group.GroupName -GroupScope $group.GroupType -Path ($($group.GroupLocation)+","+$($searchbase))
      Write-Host "Group $($group.GroupName) created in $($group.GroupLocation),$($searchbase)!"
    }
    
    # Add the member group to the group
    If ($group.GroupMember -ne '')
    {
      Try
      {
        #Check if the Member Group exists
        $memberGroup = Get-ADGroup $group.GroupMember
        $targetGroup = Get-ADGroup $group.GroupName
        Add-ADGroupMember -Identity $targetGroup -Members $memberGroup
        Write-Host "Member Group $($group.GroupMember) added to $($group.GroupName)!"
      }
      Catch
      {
        Write-Host "The Member Group $($group.MemberGroup) does not exist!"
      }
          
    }
    
  } 
  Else 
  { 
    Write-Host "Target OU can't be found! Group creation skipped!" 
  } 
}