Initial commit

lib/utils/file_description.dart

@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:matrix/matrix.dart';
+
+extension FileDescriptionExtension on Event {
+  String? get fileDescription {
+    if (!{
+      MessageTypes.File,
+      MessageTypes.Image,
+      MessageTypes.Sticker,
+      MessageTypes.Video,
+      MessageTypes.Audio,
+    }.contains(messageType)) {
+      return null;
+    }
+    final filename = content.tryGet<String>('filename');
+    final body = calcUnlocalizedBody(hideReply: true, plaintextBody: true);
+
+    if (filename != body &&
+        filename != null &&
+        content.tryGet<String>('body')?.isNotEmpty == true) {
+      return body;
+    }
+    return null;
+  }
+}