Use enum for undo mode

src/Entity/LogSystem/LogWithEventUndoTrait.php

@@ -0,0 +1,51 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Entity\LogSystem;
+
+use App\Entity\Contracts\LogWithEventUndoInterface;
+use App\Services\LogSystem\EventUndoMode;
+
+trait LogWithEventUndoTrait
+{
+    public function isUndoEvent(): bool
+    {
+        return isset($this->extra['u']);
+    }
+
+    public function getUndoEventID(): ?int
+    {
+        return $this->extra['u'] ?? null;
+    }
+
+    public function setUndoneEvent(AbstractLogEntry $event, EventUndoMode $mode = EventUndoMode::UNDO): LogWithEventUndoInterface
+    {
+        $this->extra['u'] = $event->getID();
+        $this->extra['um'] = $mode->toExtraInt();
+
+        return $this;
+    }
+
+    public function getUndoMode(): EventUndoMode
+    {
+        $mode_int = $this->extra['um'] ?? 1;
+        return EventUndoMode::fromExtraInt($mode_int);
+    }
+}