Memberpress + WP Discourse (listen to mepr events, add/remove from Discourse groups)

gistfile1.txt

<?php
// https://docs.memberpress.com/article/325-action-hooks-in-memberpress

add_action('mepr-event-create', 'listen_to_mepr_events');
function listen_to_mepr_events($event) {
  $obj = $event->get_data();
  //$obj might be a MeprTransaction object or a MeprSubscription object

  if(!($obj instanceof MeprTransaction) && !($obj instanceof MeprSubscription)) {
    return; // nothing here to do if we're not dealing with a txn or sub
  }

  $member = $obj->user(); // get member object data from event object

  $user_id = $member->ID; // get user ID from object

  if($member->is_active_on_membership($obj)) { //active membership
    
    if(3780 == $obj->product_id) { //MONTHLY Membership
        $add_group = 'Ksenia_Basic'; // Discourse Group Name
        $remove_groups = ['Ksenia_Essential','Ksenia_Premium','Ksenia_Free','Ksenia_Annual'];
        // add to Discourse Group
        \WPDiscourse\Utilities\Utilities::add_user_to_discourse_group( $user_id, $add_group );
        // remove from Discourse Groups
        \WPDiscourse\Utilities\Utilities::remove_user_from_discourse_group( $user_id, $remove_groups );
    }
    else if(3847 == $obj->product_id) { //6 Month (Essential) Membership
        $add_group = 'Ksenia_Essential'; // Discourse Group Name
        $remove_groups = ['Ksenia_Basic','Ksenia_Premium','Ksenia_Free','Ksenia_Annual'];
        // add to Discourse Group
        \WPDiscourse\Utilities\Utilities::add_user_to_discourse_group( $user_id, $add_group );
        // remove from Discourse Groups
        \WPDiscourse\Utilities\Utilities::remove_user_from_discourse_group( $user_id, $remove_groups );
    }
  }
  else { //no matches
  }
}