feat: add student master data import

2026-08-17 13:12:03 +02:00
parent 9286bfa3b5
commit 37f4fee574
18 changed files with 2359 additions and 13 deletions
@@ -1,4 +1,5 @@
 using LehrerApp.Core.Interfaces;
+using LehrerApp.Core.Importing;
 using LehrerApp.Core.Services;
 using LehrerApp.Data;
 using LehrerApp.Data.Repositories;
@@ -111,6 +112,8 @@ public static class AppBootstrapper
        services.AddSingleton(_ => new PrivacySettingsService(appData));
        services.AddSingleton<AttendanceBalanceService>();
        services.AddSingleton<PersonalDataExportService>();
+        services.AddSingleton<IImportHandler<ImportedStudent>, StudentMasterDataCsvImportHandler>();
+        services.AddSingleton<StudentImportService>();

        // ── Datenbank ─────────────────────────────────────────────────────────
        services.AddSingleton(_ => new LiteDbContext(DbPath, DbPassword));
@@ -0,0 +1,149 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using LehrerApp.Core.Importing;
+using LehrerApp.Core.Services;
+using System.Collections.ObjectModel;
+
+namespace LehrerApp.Desktop.ViewModels.Students;
+
+public partial class StudentImportDialogViewModel : ObservableObject
+{
+    private readonly StudentImportService _service;
+    private readonly StudentImportPreview _preview;
+
+    [ObservableProperty] private bool _isBusy;
+    [ObservableProperty] private string _error = "";
+
+    public string FileName { get; }
+    public string FormatName => _preview.FormatName;
+    public int TotalStudents => _preview.Entries.Count;
+    public int NewStudents => _preview.Entries.Count(entry =>
+        entry.AutomaticResolution?.Kind == StudentImportResolutionKind.CreateNew);
+    public int ExistingStudents => _preview.Entries.Count(entry =>
+        entry.AutomaticResolution?.Kind == StudentImportResolutionKind.UseExisting);
+    public int StudentsToSupplement => _preview.Entries.Count(entry => entry.FieldsToSupplement.Count > 0);
+    public string Summary =>
+        $"{TotalStudents} erkannt · {NewStudents} neu · {ExistingStudents} eindeutig vorhanden · "
+        + $"{StudentsToSupplement} mit Ergänzungen";
+
+    public string GroupSummary { get; }
+    public ObservableCollection<StudentImportMessageItem> Messages { get; } = [];
+    public ObservableCollection<StudentImportConflictItem> Conflicts { get; } = [];
+    public bool HasMessages => Messages.Count > 0;
+    public bool HasConflicts => Conflicts.Count > 0;
+    public bool IsReadyWithoutConflicts => !HasConflicts && _preview.CanApply;
+    public bool HasBlockingErrors => !_preview.CanApply;
+    public bool CanApply => _preview.CanApply && !IsBusy;
+    public StudentImportApplyResult? Result { get; private set; }
+
+    public StudentImportDialogViewModel(
+        StudentImportService service,
+        StudentImportPreview preview,
+        string fileName)
+    {
+        _service = service;
+        _preview = preview;
+        FileName = fileName;
+
+        foreach (var message in preview.Messages)
+            Messages.Add(new StudentImportMessageItem(message));
+        foreach (var conflict in preview.Conflicts)
+            Conflicts.Add(new StudentImportConflictItem(conflict));
+
+        var automaticGroups = preview.GroupAssignments.Count(group => group.AutomaticGroupId is not null);
+        var unresolvedGroups = preview.GroupAssignments.Count(group => group.ConflictId is not null);
+        var unassignedGroups = preview.GroupAssignments.Count - automaticGroups - unresolvedGroups;
+        GroupSummary = preview.GroupAssignments.Count == 0
+            ? "Die Datei enthält keine Klassenangabe."
+            : $"Lerngruppen: {automaticGroups} automatisch · {unresolvedGroups} zu entscheiden"
+              + (unassignedGroups > 0 ? $" · {unassignedGroups} nicht zugeordnet" : "");
+    }
+
+    partial void OnIsBusyChanged(bool value) => OnPropertyChanged(nameof(CanApply));
+
+    public IReadOnlyList<ImportDecision> BuildDecisions() => Conflicts
+        .Select(conflict => new ImportDecision(conflict.Id, conflict.SelectedOption.Id))
+        .ToList()
+        .AsReadOnly();
+
+    public async Task<bool> TryApplyAsync()
+    {
+        Error = "";
+        if (!_preview.CanApply)
+        {
+            Error = "Der Import enthält Fehler und kann nicht angewendet werden.";
+            return false;
+        }
+
+        IsBusy = true;
+        try
+        {
+            var decisions = BuildDecisions();
+            Result = await Task.Run(async () =>
+                await _service.ApplyAsync(_preview, decisions).ConfigureAwait(false));
+            return true;
+        }
+        catch (InvalidOperationException ex)
+        {
+            Error = ex.Message;
+            return false;
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+}
+
+public sealed class StudentImportMessageItem
+{
+    public string Message { get; }
+    public string SourceReference { get; }
+    public string Display => SourceReference.Length == 0 ? Message : $"{SourceReference}: {Message}";
+    public string Foreground { get; }
+
+    public StudentImportMessageItem(ImportMessage message)
+    {
+        Message = message.Message;
+        SourceReference = message.SourceReference ?? "";
+        Foreground = message.Severity switch
+        {
+            ImportMessageSeverity.Error => "#C62828",
+            ImportMessageSeverity.Warning => "#B06A00",
+            _ => "#2563EB",
+        };
+    }
+}
+
+public partial class StudentImportConflictItem : ObservableObject
+{
+    [ObservableProperty] private StudentImportConflictOptionItem _selectedOption;
+
+    public string Id { get; }
+    public string Title { get; }
+    public string Description { get; }
+    public string ImportedValue { get; }
+    public string ExistingValue { get; }
+    public string SourceReference { get; }
+    public IReadOnlyList<StudentImportConflictOptionItem> Options { get; }
+
+    public StudentImportConflictItem(ImportConflict conflict)
+    {
+        Id = conflict.Id;
+        Title = conflict.Title;
+        Description = conflict.Description;
+        ImportedValue = conflict.ImportedValue;
+        ExistingValue = conflict.ExistingValue ?? "";
+        SourceReference = conflict.SourceReference ?? "";
+        Options = conflict.Options
+            .Select(option => new StudentImportConflictOptionItem(
+                option.Id, option.Label, option.Description ?? ""))
+            .ToList()
+            .AsReadOnly();
+        _selectedOption = Options.First(option => option.Id == conflict.DefaultOptionId);
+    }
+}
+
+public sealed record StudentImportConflictOptionItem(
+    string Id,
+    string Label,
+    string Description);
@@ -572,14 +572,16 @@ public class ContactItem
    public string  Relation  { get; }
    public string  LetterSalutation { get; }
    public string? Phone     { get; }
+    public string? MobilePhone { get; }
    public string? Email     { get; }
    public string  Address   { get; }
-    public bool    HasPhone  => !string.IsNullOrEmpty(Phone);
+    public bool    HasPhone  => !string.IsNullOrEmpty(Phone) || !string.IsNullOrEmpty(MobilePhone);
    public bool    HasEmail  => !string.IsNullOrEmpty(Email);
    public bool    HasAddress => !string.IsNullOrEmpty(Address);
    public bool    IsInvalid => Model.InvalidSince.HasValue;
    public bool    IsValid => !IsInvalid;
-    public string  PhoneDisplay => Phone ?? "";
+    public string  PhoneDisplay => string.Join(" · ", new[] { MobilePhone, Phone }
+        .Where(value => !string.IsNullOrWhiteSpace(value)));
    public string  EmailDisplay => Email ?? "";
    public string  StatusText => IsInvalid
        ? $"Ungültig seit {Model.InvalidSince:dd.MM.yyyy} · {InvalidReasonText(Model.InvalidReason)}"
@@ -595,9 +597,10 @@ public class ContactItem
        Relation = c.Relation;
        LetterSalutation = c.LetterSalutation ?? "";
        Phone    = c.Phone;
+        MobilePhone = c.MobilePhone;
        Email    = c.Email;
        Address  = FormatAddress(c);
-        CallCommand = new RelayCommand(() => OpenUri($"tel:{Phone}"), () => HasPhone);
+        CallCommand = new RelayCommand(() => OpenUri($"tel:{MobilePhone ?? Phone}"), () => HasPhone);
        MailCommand = new RelayCommand(() => OpenUri($"mailto:{Email}"), () => HasEmail);
    }

@@ -696,6 +699,7 @@ public partial class ContactEntryViewModel : ObservableObject
    [ObservableProperty] private string _relation = "";
    [ObservableProperty] private string _letterSalutation = "";
    [ObservableProperty] private string _phone    = "";
+    [ObservableProperty] private string _mobilePhone = "";
    [ObservableProperty] private string _email    = "";
    [ObservableProperty] private string _street = "";
    [ObservableProperty] private string _postalCode = "";
@@ -711,6 +715,7 @@ public partial class ContactEntryViewModel : ObservableObject
        Relation = Relation.Trim(),
        LetterSalutation = string.IsNullOrWhiteSpace(LetterSalutation) ? null : LetterSalutation.Trim(),
        Phone    = string.IsNullOrWhiteSpace(Phone) ? null : Phone.Trim(),
+        MobilePhone = string.IsNullOrWhiteSpace(MobilePhone) ? null : MobilePhone.Trim(),
        Email    = string.IsNullOrWhiteSpace(Email) ? null : Email.Trim(),
        Street   = string.IsNullOrWhiteSpace(Street) ? null : Street.Trim(),
        PostalCode = string.IsNullOrWhiteSpace(PostalCode) ? null : PostalCode.Trim(),
@@ -726,6 +731,7 @@ public partial class ContactEditDialogViewModel : ObservableObject
    [ObservableProperty] private string _relation = "Elternteil";
    [ObservableProperty] private string _letterSalutation = "";
    [ObservableProperty] private string _phone = "";
+    [ObservableProperty] private string _mobilePhone = "";
    [ObservableProperty] private string _email = "";
    [ObservableProperty] private string _street = "";
    [ObservableProperty] private string _postalCode = "";
@@ -753,6 +759,7 @@ public partial class ContactEditDialogViewModel : ObservableObject
        Relation = source.Relation;
        LetterSalutation = source.LetterSalutation ?? "";
        Phone = source.Phone ?? "";
+        MobilePhone = source.MobilePhone ?? "";
        Email = source.Email ?? "";
        Street = source.Street ?? "";
        PostalCode = source.PostalCode ?? "";
@@ -804,6 +811,7 @@ public partial class ContactEditDialogViewModel : ObservableObject
            Relation = Relation.Trim(),
            LetterSalutation = NullIfEmpty(LetterSalutation),
            Phone = NullIfEmpty(Phone),
+            MobilePhone = NullIfEmpty(MobilePhone),
            Email = NullIfEmpty(Email),
            Street = NullIfEmpty(Street),
            PostalCode = NullIfEmpty(PostalCode),
@@ -75,13 +75,14 @@
                    <TextBox Text="{Binding LetterSalutation}"
                             PlaceholderText="Briefanrede, z.B. Sehr geehrte Frau Mustermann,"
                             FontSize="12"/>
-                    <!-- Zeile 2: Telefon + E-Mail -->
+                    <!-- Zeile 2: Telefon + Mobiltelefon -->
                    <Grid ColumnDefinitions="*,10,*">
                      <TextBox Grid.Column="0" Text="{Binding Phone}"
-                               PlaceholderText="Telefon / Handy" FontSize="12"/>
-                      <TextBox Grid.Column="2" Text="{Binding Email}"
-                               PlaceholderText="E-Mail" FontSize="12"/>
+                               PlaceholderText="Festnetz" FontSize="12"/>
+                      <TextBox Grid.Column="2" Text="{Binding MobilePhone}"
+                               PlaceholderText="Mobiltelefon" FontSize="12"/>
                    </Grid>
+                    <TextBox Text="{Binding Email}" PlaceholderText="E-Mail" FontSize="12"/>
                    <!-- Zeile 3: Adresse -->
                    <TextBox Text="{Binding Street}" PlaceholderText="Straße und Hausnummer" FontSize="12"/>
                    <Grid ColumnDefinitions="100,10,*">
@@ -39,14 +39,19 @@
        <Grid ColumnDefinitions="*,10,*">
          <StackPanel Grid.Column="0" Spacing="4">
            <TextBlock Text="Telefon" FontSize="12" Opacity="0.7"/>
-            <TextBox Text="{Binding Phone}" PlaceholderText="Telefon / Handy"/>
+            <TextBox Text="{Binding Phone}" PlaceholderText="Festnetz"/>
          </StackPanel>
          <StackPanel Grid.Column="2" Spacing="4">
-            <TextBlock Text="E-Mail" FontSize="12" Opacity="0.7"/>
-            <TextBox Text="{Binding Email}" PlaceholderText="E-Mail"/>
+            <TextBlock Text="Mobiltelefon" FontSize="12" Opacity="0.7"/>
+            <TextBox Text="{Binding MobilePhone}" PlaceholderText="Mobiltelefon"/>
          </StackPanel>
        </Grid>

+        <StackPanel Spacing="4">
+          <TextBlock Text="E-Mail" FontSize="12" Opacity="0.7"/>
+          <TextBox Text="{Binding Email}" PlaceholderText="E-Mail"/>
+        </StackPanel>
+
        <StackPanel Spacing="8">
          <TextBlock Text="Adresse" FontSize="14" FontWeight="SemiBold"/>
          <TextBox Text="{Binding Street}" PlaceholderText="Straße und Hausnummer"/>
@@ -0,0 +1,103 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="clr-namespace:LehrerApp.Desktop.ViewModels.Students"
+        x:Class="LehrerApp.Desktop.Views.Students.StudentImportDialog"
+        x:DataType="vm:StudentImportDialogViewModel"
+        Title="Schüler importieren"
+        Width="820" Height="760" MinWidth="660" MinHeight="580"
+        CanResize="True" WindowStartupLocation="CenterOwner">
+  <Grid RowDefinitions="Auto,*,Auto" Margin="24,20">
+    <StackPanel Grid.Row="0" Spacing="9">
+      <TextBlock Text="Schülerimport prüfen" Classes="dialogtitle"/>
+      <TextBlock Text="{Binding FileName}" FontWeight="SemiBold"/>
+      <TextBlock Text="{Binding FormatName}" FontSize="12" Opacity="0.65"/>
+
+      <Border Background="#143B82F6" CornerRadius="6" Padding="12,10">
+        <StackPanel Spacing="4">
+          <TextBlock Text="{Binding Summary}" FontWeight="SemiBold"/>
+          <TextBlock Text="{Binding GroupSummary}" FontSize="12" TextWrapping="Wrap"/>
+          <TextBlock Text="Vorhandene Werte bleiben erhalten; nur leere Stammdaten werden ergänzt."
+                     FontSize="12" Opacity="0.75" TextWrapping="Wrap"/>
+        </StackPanel>
+      </Border>
+
+      <ScrollViewer MaxHeight="130" IsVisible="{Binding HasMessages}">
+        <ItemsControl ItemsSource="{Binding Messages}">
+          <ItemsControl.ItemTemplate>
+            <DataTemplate x:DataType="vm:StudentImportMessageItem">
+              <TextBlock Text="{Binding Display}" Foreground="{Binding Foreground}"
+                         TextWrapping="Wrap" FontSize="12" Margin="0,1"/>
+            </DataTemplate>
+          </ItemsControl.ItemTemplate>
+        </ItemsControl>
+      </ScrollViewer>
+    </StackPanel>
+
+    <Grid Grid.Row="1" RowDefinitions="Auto,*" Margin="0,16,0,0">
+      <TextBlock Grid.Row="0" Text="Entscheidungen" FontSize="15" FontWeight="SemiBold"
+                 Margin="0,0,0,8" IsVisible="{Binding HasConflicts}"/>
+
+      <Border Grid.Row="1" IsVisible="{Binding IsReadyWithoutConflicts}"
+              Background="#1422A06B" CornerRadius="6" Padding="14"
+              VerticalAlignment="Top">
+        <TextBlock Text="Keine Konflikte – der Import kann angewendet werden."
+                   Foreground="#16845B" FontWeight="SemiBold"/>
+      </Border>
+
+      <Border Grid.Row="1" IsVisible="{Binding HasBlockingErrors}"
+              Background="#14C62828" CornerRadius="6" Padding="14"
+              VerticalAlignment="Top">
+        <TextBlock Text="Die Datei enthält Fehler. Bitte korrigiere sie und starte den Import erneut."
+                   Foreground="#C62828" FontWeight="SemiBold" TextWrapping="Wrap"/>
+      </Border>
+
+      <ScrollViewer Grid.Row="1" IsVisible="{Binding HasConflicts}">
+        <ItemsControl ItemsSource="{Binding Conflicts}">
+          <ItemsControl.ItemTemplate>
+            <DataTemplate x:DataType="vm:StudentImportConflictItem">
+              <Border BorderBrush="{DynamicResource SystemControlForegroundBaseLowBrush}"
+                      BorderThickness="1" CornerRadius="6" Padding="12" Margin="0,0,0,10">
+                <StackPanel Spacing="7">
+                  <Grid ColumnDefinitions="*,Auto">
+                    <TextBlock Grid.Column="0" Text="{Binding Title}" FontWeight="SemiBold"/>
+                    <TextBlock Grid.Column="1" Text="{Binding SourceReference}" FontSize="11" Opacity="0.55"/>
+                  </Grid>
+                  <TextBlock Text="{Binding Description}" TextWrapping="Wrap" FontSize="12" Opacity="0.75"/>
+                  <Grid ColumnDefinitions="100,*" RowDefinitions="Auto,Auto">
+                    <TextBlock Grid.Row="0" Grid.Column="0" Text="Importiert:" FontSize="12" Opacity="0.6"/>
+                    <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding ImportedValue}" TextWrapping="Wrap" FontSize="12"/>
+                    <TextBlock Grid.Row="1" Grid.Column="0" Text="Vorhanden:" FontSize="12" Opacity="0.6"
+                               IsVisible="{Binding ExistingValue, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+                    <TextBlock Grid.Row="1" Grid.Column="1" Text="{Binding ExistingValue}" TextWrapping="Wrap" FontSize="12"/>
+                  </Grid>
+                  <ComboBox ItemsSource="{Binding Options}" SelectedItem="{Binding SelectedOption}"
+                            HorizontalAlignment="Stretch">
+                    <ComboBox.ItemTemplate>
+                      <DataTemplate x:DataType="vm:StudentImportConflictOptionItem">
+                        <StackPanel Spacing="2">
+                          <TextBlock Text="{Binding Label}"/>
+                          <TextBlock Text="{Binding Description}" FontSize="11" Opacity="0.6"
+                                     TextWrapping="Wrap"/>
+                        </StackPanel>
+                      </DataTemplate>
+                    </ComboBox.ItemTemplate>
+                  </ComboBox>
+                </StackPanel>
+              </Border>
+            </DataTemplate>
+          </ItemsControl.ItemTemplate>
+        </ItemsControl>
+      </ScrollViewer>
+    </Grid>
+
+    <StackPanel Grid.Row="2" Spacing="10" Margin="0,14,0,0">
+      <TextBlock Text="{Binding Error}" Foreground="#C62828" TextWrapping="Wrap"
+                 IsVisible="{Binding Error, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+      <Grid ColumnDefinitions="*,10,*">
+        <Button Grid.Column="0" Content="Abbrechen" HorizontalAlignment="Stretch" Click="OnCancel"/>
+        <Button Grid.Column="2" Content="Import anwenden" HorizontalAlignment="Stretch"
+                IsEnabled="{Binding CanApply}" Click="OnApply"/>
+      </Grid>
+    </StackPanel>
+  </Grid>
+</Window>
@@ -0,0 +1,18 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using LehrerApp.Desktop.ViewModels.Students;
+
+namespace LehrerApp.Desktop.Views.Students;
+
+public partial class StudentImportDialog : Window
+{
+    public StudentImportDialog() => InitializeComponent();
+
+    private async void OnApply(object? sender, RoutedEventArgs e)
+    {
+        if (DataContext is StudentImportDialogViewModel vm && await vm.TryApplyAsync())
+            Close(true);
+    }
+
+    private void OnCancel(object? sender, RoutedEventArgs e) => Close(false);
+}
@@ -8,12 +8,14 @@
    <Border Grid.Row="0" Padding="20,16"
            BorderBrush="{DynamicResource SystemControlForegroundBaseLowBrush}"
            BorderThickness="0,0,0,1">
-      <Grid ColumnDefinitions="*,Auto,Auto">
+      <Grid ColumnDefinitions="*,Auto,Auto,Auto">
        <shared:PageHeader Grid.Column="0" Title="Schüler" Subtitle="{Binding CountSummary}"/>
        <CheckBox Grid.Column="1" Content="Inaktive anzeigen"
                  IsChecked="{Binding ShowInactive}"
                  VerticalAlignment="Center" Margin="0,0,12,0"/>
-        <Button Grid.Column="2" Content="＋ Neuer Schüler"
+        <Button Grid.Column="2" Content="⇩ Importieren…" Click="OnImportClick"
+                VerticalAlignment="Center" Margin="0,0,8,0"/>
+        <Button Grid.Column="3" Content="＋ Neuer Schüler"
                Command="{Binding AddStudentCommand}" VerticalAlignment="Center"/>
      </Grid>
    </Border>
@@ -1,3 +1,71 @@
 using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Platform.Storage;
+using LehrerApp.Core.Importing;
+using LehrerApp.Core.Services;
+using LehrerApp.Desktop.Services;
+using LehrerApp.Desktop.ViewModels.Students;
+using Microsoft.Extensions.DependencyInjection;
+
 namespace LehrerApp.Desktop.Views.Students;
-public partial class StudentListView : UserControl { public StudentListView() => InitializeComponent(); }
+
+public partial class StudentListView : UserControl
+{
+    private const int MaximumImportFileSize = 20 * 1024 * 1024;
+
+    public StudentListView() => InitializeComponent();
+
+    private async void OnImportClick(object? sender, RoutedEventArgs e)
+    {
+        var owner = TopLevel.GetTopLevel(this) as Window;
+        if (owner is null || DataContext is not StudentListViewModel list) return;
+
+        var service = App.Services.GetRequiredService<StudentImportService>();
+        var patterns = service.SupportedExtensions.Select(extension => $"*{extension}").ToArray();
+        var files = await owner.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+        {
+            Title = "Schüler-Stammdaten importieren",
+            AllowMultiple = false,
+            FileTypeFilter =
+            [
+                new FilePickerFileType("Unterstützte Schülerlisten")
+                {
+                    Patterns = patterns.Length > 0 ? patterns : ["*.csv"],
+                },
+            ],
+        });
+        if (files.Count == 0) return;
+
+        try
+        {
+            await using var source = await files[0].OpenReadAsync();
+            if (source.CanSeek && source.Length > MaximumImportFileSize)
+                throw new InvalidDataException("Die Importdatei ist größer als 20 MB.");
+
+            using var buffer = new MemoryStream();
+            await source.CopyToAsync(buffer);
+            if (buffer.Length > MaximumImportFileSize)
+                throw new InvalidDataException("Die Importdatei ist größer als 20 MB.");
+
+            var importFile = new ImportFile(files[0].Name, buffer.ToArray());
+            var preview = await Task.Run(async () =>
+                await service.AnalyzeAsync(importFile).ConfigureAwait(false));
+            var dialogVm = new StudentImportDialogViewModel(service, preview, files[0].Name);
+            var dialog = new StudentImportDialog { DataContext = dialogVm };
+            if (!await dialog.ShowDialog<bool>(owner)) return;
+
+            list.LoadStudents();
+            var result = dialogVm.Result!;
+            App.Services.GetRequiredService<NotificationService>().ShowSuccess(
+                $"Import abgeschlossen: {result.CreatedStudents} neu, {result.UpdatedStudents} ergänzt, "
+                + $"{result.CreatedMemberships} Gruppenzuordnungen.");
+        }
+        catch (Exception ex) when (ex is ImportFormatException
+                                   or InvalidDataException
+                                   or IOException
+                                   or UnauthorizedAccessException)
+        {
+            App.Services.GetRequiredService<NotificationService>().ShowError(ex.Message);
+        }
+    }
+}