Annahmedialog auf Auftragsliste unterdrückt und MQTT-Wiederholungen abgesichert

lib/tools/mqtt_core.dart

@@ -6,6 +6,7 @@ import 'dart:math';
 import 'package:archive/archive.dart';
 import 'package:dart_mq/dart_mq.dart';
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter/foundation.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:http/http.dart' as http;
 import 'package:mqtt5_client/mqtt5_client.dart';
@@ -98,6 +99,22 @@ class MqttCore with ProducerMixin, ConsumerMixin {
     _processBootstrap();
   }
 
+  /// Ermöglicht Tests des Nachrichtenflusses ohne Bootstrap und Netzwerkzugriff.
+  @visibleForTesting
+  MqttCore.withClient({
+    required MqttServerClient client,
+    required String clientId,
+    required String fromServerTopic,
+    required String toServerTopic,
+  }) : _mqttClient = client,
+       _clientId = clientId,
+       _fromServerTopic = fromServerTopic,
+       _toServerTopic = toServerTopic {
+    instance = this;
+    initMessages();
+    _setupMqtt();
+  }
+
   ConnectionStateEnum getConnectionStatus() {
     return connectionState;
   }
@@ -185,15 +202,24 @@ class MqttCore with ProducerMixin, ConsumerMixin {
     }
   }
 
-  bool _publishMessage(String topic, Map<String, dynamic> message, bool acknowledgeRequired, {bool enqueueOnError = true}) {
+  bool _publishMessage(String topic, Map<String, dynamic> message, bool acknowledgeRequired) {
     try {
-      String messageId = const Uuid().v4();
-      String messageText = jsonEncode(message);
+      final messageId = const Uuid().v4();
 
       if (acknowledgeRequired) {
-        _enqueueMessage(messageId, topic, messageText);
+        // Vor dem ersten Versand speichern; erst die Serverbestätigung entfernt den Eintrag.
+        _enqueueMessage(messageId, topic, jsonEncode(message));
       }
 
+      return _sendMessage(topic, message, acknowledgeRequired, messageId);
+    } catch (ex) {
+      Util.logInfo("send failed: $ex");
+      return false;
+    }
+  }
+
+  bool _sendMessage(String topic, Map<String, dynamic> message, bool acknowledgeRequired, String messageId) {
+    try {
       var encapsulatedMessageText = _encapsulateMessage(messageId, acknowledgeRequired, message);
 
       var buffer = Uint8Buffer();
@@ -761,7 +787,7 @@ class MqttCore with ProducerMixin, ConsumerMixin {
     }
   }
 
-  void _enqueueMessage(String uuid, String receiver, String payload) async {
+  void _enqueueMessage(String uuid, String receiver, String payload) {
     var enqueuedMessage = EnqueuedMessage();
     enqueuedMessage.messageId = uuid;
     enqueuedMessage.topic = receiver;
@@ -780,9 +806,8 @@ class MqttCore with ProducerMixin, ConsumerMixin {
         try {
           var json = jsonDecode(enqueuedMessage.payload);
 
-          if (_publishMessage(enqueuedMessage.topic, json, false, enqueueOnError: false)) {
-            box.remove(enqueuedMessage.id);
-          }
+          // Wiederholungen behalten ihre ID und benötigen weiterhin eine Bestätigung.
+          _sendMessage(enqueuedMessage.topic, json, true, enqueuedMessage.messageId);
         } catch (ex) {
           Util.logInfo("resend enqueued message failed: $ex");
         }