create and delete notification for a project working

public/site/plugins/notifications/src/NotificationsPage.php

@@ -0,0 +1,37 @@
+<?php
+namespace adrienpayet\notifications;
+use Kirby\Cms\Page;
+use Kirby\Data\Yaml;
+use adrienpayet\notifications\Notification;
+
+class NotificationsPage extends Page {
+   public function createNotification($notificationData) {
+      $newNotification = new Notification($notificationData);
+
+      $notifications = $this->notifications()->isNotEmpty()
+         ? Yaml::decode($this->notifications()->value())
+         : [];
+      
+      $notifications[] = $newNotification->toArray();
+
+      $this->update([
+         'notifications' => $notifications
+      ]);
+   }
+
+   public function deleteNotification($notificationId) {
+      $notifications = $this->notifications()->isNotEmpty()
+         ? Yaml::decode($this->notifications()->value())
+         : [];
+      
+      foreach ($notifications as $key => $notification) {
+         if ($notification['id'] === $notificationId) {
+            unset($notifications[$key]);
+         }
+      }
+
+      $this->update([
+         'notifications' => Yaml::encode(array_values($notifications))
+      ]);
+   }
+}