Check for local time discrepancy when entering the P2P swap tab (#25)

hypercore-one · Jun 2, 2023 · db29982 · db29982
1 parent cbf878f
commit db29982
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Showing 2 changed files with 44 additions and 2 deletions.
diff --git a/lib/utils/node_utils.dart b/lib/utils/node_utils.dart
@@ -10,6 +10,7 @@ import 'package:zenon_syrius_wallet_flutter/embedded_node/embedded_node.dart';
 import 'package:zenon_syrius_wallet_flutter/main.dart';
 import 'package:zenon_syrius_wallet_flutter/model/model.dart';
 import 'package:zenon_syrius_wallet_flutter/utils/constants.dart';
+import 'package:zenon_syrius_wallet_flutter/utils/date_time_utils.dart';
 import 'package:zenon_syrius_wallet_flutter/utils/global.dart';
 import 'package:zenon_syrius_wallet_flutter/utils/notification_utils.dart';
 import 'package:znn_sdk_dart/znn_sdk_dart.dart';
@@ -131,6 +132,34 @@ class NodeUtils {
     }
   }
 
+  static Future<void> checkForLocalTimeDiscrepancy(
+      String warningMessage) async {
+    const maxAllowedDiscrepancy = Duration(minutes: 5);
+    try {
+      final syncInfo = await zenon!.stats.syncInfo();
+      bool nodeIsSynced = kCurrentNode == kLocalhostDefaultNodeUrl
+          ? (syncInfo.state == SyncState.syncDone ||
+              (syncInfo.targetHeight > 0 &&
+                  syncInfo.currentHeight > 0 &&
+                  (syncInfo.targetHeight - syncInfo.currentHeight) < 20))
+          : true;
+      if (nodeIsSynced) {
+        final frontierTime =
+            (await zenon!.ledger.getFrontierMomentum()).timestamp;
+        final timeDifference = (frontierTime - DateTimeUtils.unixTimeNow).abs();
+        if (timeDifference > maxAllowedDiscrepancy.inSeconds) {
+          NotificationUtils.sendNotificationError(
+            Exception('Local time discrepancy detected.'),
+            warningMessage,
+          );
+        }
+      }
+    } catch (e, stackTrace) {
+      Logger('NodeUtils')
+          .log(Level.WARNING, 'checkForLocalTimeDiscrepancy', e, stackTrace);
+    }
+  }
+
   static void _initListenForUnreceivedAccountBlocks(Stream broadcaster) {
     broadcaster.listen(
       (event) {

diff --git a/lib/widgets/tab_children_widgets/p2p_swap_tab_child.dart b/lib/widgets/tab_children_widgets/p2p_swap_tab_child.dart
@@ -6,14 +6,27 @@ import 'package:zenon_syrius_wallet_flutter/widgets/modular_widgets/p2p_swap_wid
 import 'package:zenon_syrius_wallet_flutter/widgets/modular_widgets/p2p_swap_widgets/p2p_swap_options_card.dart';
 import 'package:zenon_syrius_wallet_flutter/widgets/widgets.dart';
 
-class P2pSwapTabChild extends StatelessWidget {
+class P2pSwapTabChild extends StatefulWidget {
   final VoidCallback onStepperNotificationSeeMorePressed;
 
   const P2pSwapTabChild({
     required this.onStepperNotificationSeeMorePressed,
     Key? key,
   }) : super(key: key);
 
+  @override
+  State createState() => P2pSwapTabChildState();
+}
+
+class P2pSwapTabChildState extends State<P2pSwapTabChild> {
+  @override
+  void initState() {
+    super.initState();
+    NodeUtils.checkForLocalTimeDiscrepancy(
+        '''Local time discrepancy detected. Please confirm your operating '''
+        '''system's time is correct before conducting P2P swaps.''');
+  }
+
   @override
   Widget build(BuildContext context) {
     return _getLayout(context);
@@ -45,7 +58,7 @@ class P2pSwapTabChild extends StatelessWidget {
           child: Consumer<SelectedAddressNotifier>(
             builder: (_, __, ___) => P2pSwapsCard(
               onStepperNotificationSeeMorePressed:
-                  onStepperNotificationSeeMorePressed,
+                  widget.onStepperNotificationSeeMorePressed,
             ),
           ),
         ),