Push notification tap redirect to corressponding ticket or task

lib/services/notification_bridge.dart

@@ -1,25 +1,21 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
-import 'package:go_router/go_router.dart';
 
 import '../models/notification_item.dart';
 import '../providers/notifications_provider.dart';
 import '../providers/notification_navigation_provider.dart';
+import '../routing/app_router.dart';
 
 /// Wraps the app and installs both a Supabase realtime listener and the
 /// FCM handlers described in the frontend design.
 ///
-/// The navigator key is required so that snackbars and navigation can be
-/// triggered from outside the widget tree (e.g. from realtime callbacks).
+/// Navigation is performed via the [GoRouter] instance obtained from
+/// [appRouterProvider], so this widget does **not** require an external
+/// navigator key.
 class NotificationBridge extends ConsumerStatefulWidget {
-  const NotificationBridge({
-    required this.navigatorKey,
-    required this.child,
-    super.key,
-  });
+  const NotificationBridge({required this.child, super.key});
 
-  final GlobalKey<NavigatorState> navigatorKey;
   final Widget child;
 
   @override
@@ -55,26 +51,36 @@ class _NotificationBridgeState extends ConsumerState<NotificationBridge>
     }
   }
 
-  void _showBanner(String type, NotificationItem item) {
-    final ctx = widget.navigatorKey.currentState?.overlay?.context;
-    if (ctx == null) return;
-
-    ScaffoldMessenger.of(ctx).showSnackBar(
-      SnackBar(
-        content: Text('New $type received!'),
-        action: SnackBarAction(
-          label: 'View',
-          onPressed: () => _navigateToNotification(item),
-        ),
-      ),
-    );
+  /// Navigate to the task or ticket detail screen using GoRouter.
+  void _goToDetail({String? taskId, String? ticketId}) {
+    final router = ref.read(appRouterProvider);
+    if (taskId != null && taskId.isNotEmpty) {
+      router.go('/tasks/$taskId');
+    } else if (ticketId != null && ticketId.isNotEmpty) {
+      router.go('/tickets/$ticketId');
+    }
   }
 
-  void _navigateToNotification(NotificationItem item) {
-    widget.navigatorKey.currentState?.pushNamed(
-      '/notification-detail',
-      arguments: item,
-    );
+  void _showBanner(String type, NotificationItem item) {
+    // Use a post-frame callback so that the ScaffoldMessenger from
+    // MaterialApp is available in the element tree.
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
+      try {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('New $type received!'),
+            action: SnackBarAction(
+              label: 'View',
+              onPressed: () =>
+                  _goToDetail(taskId: item.taskId, ticketId: item.ticketId),
+            ),
+          ),
+        );
+      } catch (_) {
+        // ScaffoldMessenger not available yet (before first frame) — ignore.
+      }
+    });
   }
 
   void _setupFcmHandlers() {
@@ -90,10 +96,20 @@ class _NotificationBridgeState extends ConsumerState<NotificationBridge>
     });
   }
 
+  /// Extract task/ticket IDs from the FCM data payload and navigate.
+  ///
+  /// The FCM data map contains keys such as `task_id` / `taskId` /
+  /// `ticket_id` / `ticketId` — these are the same keys used in the
+  /// background handler ([_firebaseMessagingBackgroundHandler]).
   void _handleMessageTap(RemoteMessage message) {
-    final data = message.data.cast<String, dynamic>();
-    final item = NotificationItem.fromMap(data);
-    _navigateToNotification(item);
+    final data = message.data;
+
+    final String? taskId = (data['task_id'] ?? data['taskId'] ?? data['task'])
+        ?.toString();
+    final String? ticketId =
+        (data['ticket_id'] ?? data['ticketId'] ?? data['ticket'])?.toString();
+
+    _goToDetail(taskId: taskId, ticketId: ticketId);
   }
 
   @override
@@ -115,19 +131,16 @@ class _NotificationBridgeState extends ConsumerState<NotificationBridge>
       _prevList = nextList;
     });
 
-    // Listen for pending navigation from notification taps
+    // Listen for pending navigation from local-notification taps
     ref.listen<PendingNavigation?>(pendingNotificationNavigationProvider, (
       previous,
       next,
     ) {
       if (next != null) {
-        final type = next.type;
-        final id = next.id;
-        if (type == 'ticket') {
-          GoRouter.of(context).go('/tickets/$id');
-        } else if (type == 'task') {
-          GoRouter.of(context).go('/tasks/$id');
-        }
+        _goToDetail(
+          taskId: next.type == 'task' ? next.id : null,
+          ticketId: next.type == 'ticket' ? next.id : null,
+        );
         // Clear the pending navigation after handling
         ref.read(pendingNotificationNavigationProvider.notifier).state = null;
       }