Properly handle click actions on notifications

flutter/lib/utils/notifier.dart

@@ -6,7 +6,7 @@ import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/globals.dart';
 
 class Notifier {
-  static void showLocalNotification(String channelID, String channelName, String channelDescr, String title, String body, DateTime? timestamp) async {
+  static void showLocalNotification(String messageID, String channelID, String channelName, String channelDescr, String title, String body, DateTime? timestamp) async {
     final nid = Globals().sharedPrefs.getInt('notifier.nextid') ?? 1000;
     Globals().sharedPrefs.setInt('notifier.nextid', nid + 7);
 
@@ -25,6 +25,12 @@ class Notifier {
         final newSummaryNID = nid + 1;
         ApplicationLog.debug('Create new summary notifications for channel ${channelID} with nid [${newSummaryNID}])');
         Globals().sharedPrefs.setInt('notifier.summary.$channelID', newSummaryNID);
+
+        var payload = '';
+        if (messageID != '') {
+          payload = ['@SCN_MESSAGE_SUMMARY', channelID, newSummaryNID].join("\n");
+        }
+
         await flutterLocalNotificationsPlugin.show(
           newSummaryNID,
           channelName,
@@ -40,6 +46,7 @@ class Notifier {
               subText: (channelName == 'main') ? null : channelName,
             ),
           ),
+          payload: payload,
         );
       }
     }
@@ -48,6 +55,11 @@ class Notifier {
 
     ApplicationLog.debug('Create new local notifications for message in channel ${channelID} with nid [${newMessageNID}])');
 
+    var payload = '';
+    if (messageID != '') {
+      payload = ['@SCN_MESSAGE', messageID, channelID, newMessageNID].join("\n");
+    }
+
     // ======== SHOW NOTIFICATION ========
     await flutterLocalNotificationsPlugin.show(
       newMessageNID,
@@ -65,6 +77,7 @@ class Notifier {
           subText: (channelName == 'main') ? null : channelName,
         ),
       ),
+      payload: payload,
     );
   }
 }