<#
    .Exemple

#>

cls

#throw "This is not a robus script"
$location = Get-Location
Set-Location C:\Tools

Import-Module ActiveDirectory

$FichierAdmin = "Groupes-Administrateur.csv"
$FichierStandard = "Groupes-Standard.csv"

$GroupAdmins = Import-Csv -Path $FichierAdmin -Delimiter ";"
$GroupStandards = Import-Csv -Path $FichierStandard -Delimiter ";"

$dNC = (Get-ADRootDSE).defaultNamingContext

Foreach ($group in $GroupAdmins) {
    $groupName = $group.Name
    $groupOUPrefix = $group.OU
    $destOU = $group.OU + "," + $dNC
    $groupDN = "CN=" + $groupName + "," + $destOU

    $checkForGroup = Get-ADGroup -filter 'Name -eq $groupName' -ErrorAction SilentlyContinue
    
    If ($checkForGroup.count -eq 0 ) {
        Write-Verbose "Creating new Group '$($Group.samAccountName)' under '$destOU'"

        New-ADGroup -Name $Group.Name -SamAccountName $Group.samAccountName -GroupCategory $Group.GroupCategory -GroupScope $Group.GroupScope -DisplayName $Group.DisplayName -Path $destOU -Description $Group.Description

        If ($Group.Membership -ne "") {
            Write-Verbose "Adding Group Membership '$($Group.Membership)' for group '$($Group.samAccountName)'"
            Add-ADPrincipalGroupMembership -Identity $Group.samAccountName -MemberOf $Group.Membership
        }
        $error.Clear()
    } 
    Else {
        Write-Verbose "Group '$($Group.samAccountName)'already exists."
    }
}

Foreach ($group in $GroupStandards) {
    $groupName = $group.Name
    $groupOUPrefix = $group.OU
    $destOU = $group.OU + "," + $dNC
    $groupDN = "CN=" + $groupName + "," + $destOU

    $checkForGroup = Get-ADGroup -filter 'Name -eq $groupName' -ErrorAction SilentlyContinue

    If ($checkForGroup.count -eq 0 ) {
        Write-host "Creating new Group '$($Group.samAccountName)' under '$destOU'"

        New-ADGroup -Name $Group.Name -SamAccountName $Group.samAccountName -GroupCategory $Group.GroupCategory -GroupScope $Group.GroupScope -DisplayName $Group.DisplayName -Path $destOU -Description $Group.Description

        If ($Group.Membership -ne "") {
            Write-host "Adding Group Membership '$($Group.Membership)' for group '$($Group.samAccountName)'"
            Add-ADPrincipalGroupMembership -Identity $Group.samAccountName -MemberOf $Group.Membership
        }
        $error.Clear()
    } 
    Else {
        Write-host "Group '$($Group.samAccountName)'already exists."
    }
}