Import-Module ActiveDirectory
. .\Forums_Utility.ps1

function GetADGroupMembers($group)
{
    return Get-ADGroupMember -identity $group -Recursive | Get-ADUser -Property name, SAMaccountname, mail | Select Name, mail, @{Label="username";Expression={$_.SAMaccountname.ToLower()}}

}

function ADUserExistDiscourseGroup($ad_mail, $dis_group)
{
   return (GetGroupUsers $dis_group).email -contains $ad_mail.ToLower()
}


function DiscourseUserExistADGroup($dis_email, $ad_group)
{
   return (GetADGroupMembers $ad_group).mail -contains $dis_email.ToLower()
}

function SyncADGrouptoDiscourse($ad_group, $dis_group){

    foreach($user in (GetADGroupMembers $ad_group))
    {
        if(!(ADUserExistDiscourseGroup $user.mail $dis_group))
        {
            AddUserToGroup $user.mail $dis_group
            Write-Host "adding" $user.mail
        }
    }


    foreach($user in (GetGroupUsers $dis_group))
    {
        if(!(DiscourseUserExistADGroup $user.email $ad_group))
        {
            RemoveUserFromGroup $user.email $dis_group
            Write-Host "removing" $user.email
        }
    }
}

#LIST GROUPS HERE TO BE SYNCED
SyncADGrouptoDiscourse "discourse-grpname" "AD_GroupName"