[NOTIFICATION][DATABASE] Update user notification prefs table, implementation of Notification and define a base class for notification transport

src/Util/Notification/Notification.php

@@ -0,0 +1,60 @@
+<?php
+
+// {{{ License
+// This file is part of GNU social - https://www.gnu.org/software/social
+//
+// GNU social is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GNU social is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+// }}}
+
+/**
+ * Common utility functions
+ *
+ * @package   GNUsocial
+ * @category  Util
+ *
+ * @author    Hugo Sales <hugo@fc.up.pt>
+ * @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+
+namespace App\Util\Notification;
+
+use App\Entity\Profile;
+
+class Notification
+{
+    public const NOTICE_BY_FOLLOWED = 1;
+    public const MENTION            = 2;
+    public const REPLY              = 3;
+    public const FOLLOW             = 4;
+    public const FAVORITE           = 5;
+    public const NUDGE              = 6;
+    public const DM                 = 7;
+
+    /**
+     * One of the above constants
+     */
+    private int $type;
+
+    /**
+     * Who caused this notification
+     */
+    private Profile $profile;
+
+    public function __construct(int $type, Profile $profile)
+    {
+        $this->tyoe    = $type;
+        $this->profile = $profile;
+    }
+}