Start with cascading cohort sync

classes/enrolcohortsync.php

@@ -0,0 +1,36 @@
+<?php
+namespace local_treestudyplan;
+require_once($CFG->libdir.'/externallib.php');
+
+use \local_treestudyplan\studyplan;
+
+class enrolcohortsync {
+
+    private $studyplan;
+
+    function __construct($studyplan){
+        $this->studyplan = $studyplan;
+    }
+
+    function sync(){
+        // Find the courses that need to be synced to the associated cohorts
+        $courses = $this->studyplan->get_linked_course_ids();
+
+        // And find the cohorts that are linked to this studyplan.
+
+        // Next, for each course that is linked:
+            // 1:   check if a link exists
+            //      If not, make it (maybe use some of the custom text to list the studyplans involved)
+
+            // 2:   Check if there are cohort links for this studyplan that should be removed
+            //      A: Check if there are cohort links that are no longer related to this studyplan
+            //      B: Check if these links are valid through another studyplan...
+            //      If no one uses the link anymore, deactivate it...
+
+            
+
+    }
+
+
+
+}