fix: compass-app bug in dismissable homescreen item (#2449)

compass_app/app/lib/ui/home/widgets/home_screen.dart

@@ -100,10 +100,20 @@ class _HomeScreenState extends State<HomeScreen> {
                       booking: widget.viewModel.bookings[index],
                       onTap: () => context.push(Routes.bookingWithId(
                           widget.viewModel.bookings[index].id)),
-                      onDismissed: (_) =>
-                          widget.viewModel.deleteBooking.execute(
-                        widget.viewModel.bookings[index].id,
-                      ),
+                      confirmDismiss: (_) async {
+                        // wait for command to complete
+                        await widget.viewModel.deleteBooking.execute(
+                          widget.viewModel.bookings[index].id,
+                        );
+                        // if command completed successfully, return true
+                        if (widget.viewModel.deleteBooking.completed) {
+                          // removes the dismissable from the list
+                          return true;
+                        } else {
+                          // the dismissable stays in the list
+                          return false;
+                        }
+                      },
                     ),
                   )
                 ],
@@ -141,19 +151,19 @@ class _Booking extends StatelessWidget {
     super.key,
     required this.booking,
     required this.onTap,
-    required this.onDismissed,
+    required this.confirmDismiss,
   });
 
   final BookingSummary booking;
   final GestureTapCallback onTap;
-  final DismissDirectionCallback onDismissed;
+  final ConfirmDismissCallback confirmDismiss;
 
   @override
   Widget build(BuildContext context) {
     return Dismissible(
       key: ValueKey(booking.id),
       direction: DismissDirection.endToStart,
-      onDismissed: onDismissed,
+      confirmDismiss: confirmDismiss,
       child: InkWell(
         onTap: onTap,
         child: Padding(

compass_app/app/test/ui/home/widgets/home_screen_test.dart

@@ -7,6 +7,7 @@ import 'package:compass_app/data/repositories/itinerary_config/itinerary_config_
 import 'package:compass_app/routing/routes.dart';
 import 'package:compass_app/ui/home/view_models/home_viewmodel.dart';
 import 'package:compass_app/ui/home/widgets/home_screen.dart';
+import 'package:compass_app/utils/result.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';
@@ -102,5 +103,29 @@ void main() {
       // Booking should be deleted from repository
       expect(bookingRepository.bookings, isEmpty);
     });
+
+    testWidgets('fail to delete booking', (tester) async {
+      // Create a ViewModel with a repository that will fail to delete
+      viewModel = HomeViewModel(
+        bookingRepository: _BadFakeBookingRepository()..createBooking(kBooking),
+        userRepository: FakeUserRepository(),
+      );
+      await loadWidget(tester);
+      await tester.pumpAndSettle();
+
+      // Swipe on booking (created from kBooking)
+      await tester.drag(find.text('name1, Europe'), const Offset(-1000, 0));
+      await tester.pumpAndSettle();
+
+      // Existing booking should be there
+      expect(find.text('name1, Europe'), findsOneWidget);
+    });
   });
 }
+
+class _BadFakeBookingRepository extends FakeBookingRepository {
+  @override
+  Future<Result<void>> delete(int id) async {
+    return Result.error(Exception('Failed to delete booking'));
+  }
+}