Updating the materialize library and calls.

imports/api/userConfig.js

@@ -0,0 +1,42 @@
+import { Meteor } from 'meteor/meteor';
+import { Mongo } from 'meteor/mongo';
+import { check } from 'meteor/check';
+
+export const UserConfig = new Mongo.Collection('userConfig');
+
+UserConfig.allow({
+    insert: function(userId, doc){
+        // if use id exists, allow insert
+        return !!userId;
+    },
+});
+
+Meteor.methods({
+    'add.darkModePref' (pref) {
+        check(pref, String);
+
+        if (!this.userId) {
+            throw new Meteor.Error('Not able to change registration setting. Make sure you are logged in with valid system administrator credentials.');
+        }
+
+        return UserConfig.insert({
+            user: this.userId,
+            darkMode: pref,
+            dateAdded: Date()
+        });
+    },
+    'update.darkModePref' (pref) {
+        check(pref, String);
+
+        if (!this.userId) {
+            throw new Meteor.Error('Not able to change registration setting. Make sure you are logged in with valid system administrator credentials.');
+        }
+
+        return UserConfig.update({ user: this.userId }, {
+            $set: {
+                darkMode: pref,
+                dateUpdate: Date()
+            }
+        });
+    }
+});