implement auto attachment management for file deletion/move/copy

Signed-off-by: Julien Veyssier <eneiluj@posteo.net>

3 files changed, 158 insertions, 0 deletions

diff --git a/lib/Listeners/BeforeNodeDeletedListener.php b/lib/Listeners/BeforeNodeDeletedListener.php
new file mode 100644
index 000000000..eac7b28d6
--- /dev/null
+++ b/lib/Listeners/BeforeNodeDeletedListener.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Text\Listeners;
+
+use OCA\Text\Service\ImageService;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Files\Events\Node\BeforeNodeDeletedEvent;
+use OCP\Files\File;
+
+class BeforeNodeDeletedListener implements IEventListener {
+
+	private ImageService $imageService;
+
+	public function __construct(ImageService $imageService) {
+		$this->imageService = $imageService;
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof BeforeNodeDeletedEvent) {
+			return;
+		}
+		if ($event->getNode() instanceof File && $event->getNode()->getMimeType() === 'text/markdown') {
+			$this->imageService->deleteAttachments($event->getNode());
+		}
+	}
+}
diff --git a/lib/Listeners/BeforeNodeRenamedListener.php b/lib/Listeners/BeforeNodeRenamedListener.php
new file mode 100644
index 000000000..483c2f9a6
--- /dev/null
+++ b/lib/Listeners/BeforeNodeRenamedListener.php
@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Text\Listeners;
+
+use OCA\Text\Service\ImageService;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Files\Events\Node\BeforeNodeRenamedEvent;
+use OCP\Files\File;
+
+class BeforeNodeRenamedListener implements IEventListener {
+
+	private ImageService $imageService;
+
+	public function __construct(ImageService $imageService) {
+		$this->imageService = $imageService;
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof BeforeNodeRenamedEvent) {
+			return;
+		}
+		if ($event->getSource() instanceof File
+			&& $event->getSource()->getMimeType() === 'text/markdown'
+			&& $event->getTarget() instanceof File
+		) {
+			$this->imageService->moveAttachments($event->getSource(), $event->getTarget());
+		}
+	}
+}
diff --git a/lib/Listeners/NodeCopiedListener.php b/lib/Listeners/NodeCopiedListener.php
new file mode 100644
index 000000000..64b66c166
--- /dev/null
+++ b/lib/Listeners/NodeCopiedListener.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Text\Listeners;
+
+use OCA\Text\Service\ImageService;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\Files\Events\Node\NodeCopiedEvent;
+use OCP\Files\File;
+
+class NodeCopiedListener implements IEventListener {
+
+	private ImageService $imageService;
+
+	public function __construct(ImageService $imageService) {
+		$this->imageService = $imageService;
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof NodeCopiedEvent) {
+			return;
+		}
+		error_log('COPIED source ' . $event->getSource()->getId() . ' target '. $event->getTarget()->getId());
+		if ($event->getSource() instanceof File
+			&& $event->getSource()->getMimeType() === 'text/markdown'
+			&& $event->getTarget() instanceof File
+			&& $event->getTarget()->getMimeType() === 'text/markdown'
+		) {
+			$this->imageService->copyAttachments($event->getSource(), $event->getTarget());
+		}
+	}
+}