Event handling logic.

Author: gnat

classes/domain/autogroup_set.php

@@ -100,6 +100,7 @@ public function delete(\moodle_database $db, $cleanupgroups = true)
         //this has to be done first to prevent event handler getting in the way
         $db->delete_records('local_autogroup_set', array('id'=>$this->id));
         $db->delete_records('local_autogroup_roles', array('setid'=>$this->id));
+        $db->delete_records('local_autogroup_manual', array('groupid'=>$this->id));
 
         if($cleanupgroups){
             foreach($this->groups as $k => $group){

classes/domain/group.php

@@ -90,6 +90,16 @@ public function ensure_user_is_member($userid){
      * @param int $userid
      */
     public function ensure_user_is_not_member($userid){
+
+        // Do not allow autogroup to remove this User if they were manually assigned to group.
+        $pluginconfig = get_config('local_autogroup');
+        if($pluginconfig->preservemanual) {
+            global $DB;
+            if($DB->record_exists('local_autogroup_manual', array('userid' => $userid, 'groupid' => $this->id))) {
+                return;
+            }
+        }
+
         foreach($this->members as $member){
             if ($member == $userid) {
                 \groups_remove_member($this->as_object(), $userid);

classes/event_handler.php

@@ -76,13 +76,23 @@ public static function group_member_added(event\group_member_added $event) {
             return false;
         }
 
+        global $DB;
         $pluginconfig = get_config('local_autogroup');
+
+        // Add to manually assigned list (local_autogroup_manual).
+        $userid = (int) $event->relateduserid;
+        $groupid = (int) $event->objectid;
+
+        if(!$DB->record_exists('local_autogroup_manual', array('userid' => $userid, 'groupid' => $groupid))) {
+            $record = (object) array('userid' => $userid, 'groupid' => $groupid);
+            $DB->insert_record('local_autogroup_manual', $record);
+        }
+        // End of add to manually assigned list (local_autogroup_manual)
+
         if(!$pluginconfig->listenforgroupmembership){
             return false;
         }
 
-        global $DB;
-
         $courseid = (int) $event->courseid;
         $userid = (int) $event->relateduserid;
 
@@ -101,10 +111,17 @@ public static function group_member_removed(event\group_member_removed $event) {
             return false;
         }
 
+        global $DB, $PAGE;
         $pluginconfig = get_config('local_autogroup');
 
+        // Remove from manually assigned list (local_autogroup_manual).
+        $userid = (int) $event->relateduserid;
+        $groupid = (int) $event->objectid;
 
-        global $DB, $PAGE;
+        if($DB->record_exists('local_autogroup_manual', array('userid' => $userid, 'groupid' => $groupid))) {
+            $DB->delete_records('local_autogroup_manual', array('userid' => $userid, 'groupid' => $groupid));
+        }
+        // End of remove from manually assigned list (local_autogroup_manual)
 
         $groupid = (int) $event->objectid;
         $courseid = (int) $event->courseid;
@@ -174,16 +191,22 @@ public static function group_change(event\base $event) {
             return false;
         }
 
-        $pluginconfig = get_config('local_autogroup');
-        if(!$pluginconfig->listenforgroupchanges){
-            return false;
-        }
-
         global $DB, $PAGE;
 
         $courseid = (int) $event->courseid;
         $groupid = (int) $event->objectid;
 
+        // Remove from manually assigned list (local_autogroup_manual).
+        if ($event->eventname === '\core\event\group_deleted') {
+            $DB->delete_records('local_autogroup_manual', array('groupid' => $groupid));
+        }
+        // End of remove from manually assigned list (local_autogroup_manual)
+
+        $pluginconfig = get_config('local_autogroup');
+        if(!$pluginconfig->listenforgroupchanges){
+            return false;
+        }
+
         if($DB->record_exists('groups', array('id'=>$groupid))) {
             $verifygroupidnumber = new usecase\verify_group_idnumber($groupid, $DB, $PAGE);
             $verifygroupidnumber();