Erweiterungen

lib/model/message.dart

@@ -1,5 +1,6 @@
 import 'package:isar/isar.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:stadtbote/tools/util.dart';
 
 part 'message.g.dart';
 
@@ -21,4 +22,14 @@ class Message {
   factory Message.fromJson(Map<String, dynamic> json) => _$MessageFromJson(json);
 
   Map<String, dynamic> toJson() => _$MessageToJson(this);
+
+  static Future<int> getNextId() async {
+    int currentExport500Id = await Util.preferencesGetInt('next_message_id', 0) as int;
+
+    currentExport500Id += 1;
+
+    Util.preferencesSaveInt("next_message_id", currentExport500Id);
+
+    return currentExport500Id;
+  }
 }