add lock timer setting

src/KeyKeeper/AppSettings.cs

@@ -9,6 +9,7 @@ public static class AppSettings
     private static readonly string FilePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "KeyKeeper", "settings.json");
 
     public static bool ExitOnRepositoryClose { get; set; } = false;
+    public static int LockTimerMinutes { get; set; } = 5;
 
     // Сохранение в файл
     public static void Save()
@@ -17,7 +18,7 @@ public static class AppSettings
         if (!string.IsNullOrEmpty(directory))
             Directory.CreateDirectory(directory);
 
-        var data = new { ExitOnRepositoryClose };
+        var data = new { ExitOnRepositoryClose, LockTimerMinutes };
         string json = JsonSerializer.Serialize(data);
         File.WriteAllText(FilePath, json);
     }
@@ -34,6 +35,7 @@ public static class AppSettings
                 if (data != null)
                 {
                     ExitOnRepositoryClose = data.ExitOnRepositoryClose;
+                    LockTimerMinutes = data.LockTimerMinutes ?? 5;
                 }
             }
             catch { /* Если файл поврежден, просто используем значения по умолчанию */ }
@@ -43,5 +45,6 @@ public static class AppSettings
     private class SettingsData
     {
         public bool ExitOnRepositoryClose { get; set; }
+        public int? LockTimerMinutes { get; set; }
     }
 }

src/KeyKeeper/SettingsWindow.cs

@@ -1,4 +1,5 @@
-using Avalonia;
+using System;
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Layout;
 using Avalonia.Media;
@@ -49,14 +50,60 @@ public class SettingsWindow : Window
         exitOnCloseCheckBox.IsCheckedChanged += (s, e) =>
         {
             AppSettings.ExitOnRepositoryClose = exitOnCloseCheckBox.IsChecked ?? false;
-            AppSettings.Save();
         };
 
+        // Настройка таймера блокировки
+        var lockTimerDurationRow = new StackPanel
+        {
+            Orientation = Orientation.Horizontal,
+            Spacing = 12,
+        };
+
+        var lockTimerDurationLabel1 = new TextBlock
+        {
+            Text = "Lock the vault after",
+            VerticalAlignment = VerticalAlignment.Center,
+        };
+
+        var lockTimerDurationInput = new NumericUpDown
+        {
+            Value = AppSettings.LockTimerMinutes,
+            Increment = 1,
+            Minimum = 1,
+            Maximum = 90,
+            ClipValueToMinMax = true,
+            Width = 120,
+        };
+
+        var lockTimerDurationLabel2 = new TextBlock
+        {
+            Text = "minutes of inactivity",
+            VerticalAlignment = VerticalAlignment.Center,
+        };
+
+        lockTimerDurationInput.ValueChanged += (_, _) =>
+        {
+            Console.WriteLine($"Set timer to {lockTimerDurationInput.Value} minutes");
+            AppSettings.LockTimerMinutes = (int)(lockTimerDurationInput.Value ?? 5m);
+        };
+
+        lockTimerDurationRow.Children.Add(lockTimerDurationLabel1);
+        lockTimerDurationRow.Children.Add(lockTimerDurationInput);
+        lockTimerDurationRow.Children.Add(lockTimerDurationLabel2);
+
         // Добавляем элементы в стек
         mainStack.Children.Add(titleText);
         mainStack.Children.Add(exitOnCloseCheckBox);
+        mainStack.Children.Add(lockTimerDurationRow);
 
         // Назначаем стек основным контентом окна
         this.Content = mainStack;
     }
+
+    protected override void OnClosed(EventArgs e)
+    {
+        base.OnClosed(e);
+        Console.WriteLine("Saving application settings");
+        AppSettings.Save();
+    }
 }

src/KeyKeeper/ViewModels/RepositoryWindowViewModel.cs

@@ -8,8 +8,6 @@ namespace KeyKeeper.ViewModels;
 
 public partial class RepositoryWindowViewModel : ViewModelBase
 {
-    private static readonly TimeSpan LockTimeout = TimeSpan.FromMinutes(5);
-
     private object currentPage;
     private IPassStore passStore;
     private DispatcherTimer? _lockTimer;
@@ -94,7 +92,7 @@ public partial class RepositoryWindowViewModel : ViewModelBase
     private void OnLockTimerTick(object? sender, EventArgs e)
     {
         var elapsed = DateTime.UtcNow - _timerStart;
-        var remaining = LockTimeout - elapsed;
+        var remaining = TimeSpan.FromMinutes(AppSettings.LockTimerMinutes) - elapsed;
 
         if (remaining <= TimeSpan.Zero)
         {
@@ -109,7 +107,7 @@ public partial class RepositoryWindowViewModel : ViewModelBase
 
     private void UpdateTimerDisplay(TimeSpan? remaining = null)
     {
-        var r = remaining ?? LockTimeout;
+        var r = remaining ?? TimeSpan.FromMinutes(AppSettings.LockTimerMinutes);
         LockTimerDisplay = $"{r:mm\\:ss}";
     }
 }

src/KeyKeeper/Views/MainWindow.axaml.cs

@@ -10,6 +10,7 @@ using KeyKeeper.Services;
 using KeyKeeper.ViewModels;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -39,19 +40,31 @@ namespace KeyKeeper.Views
                 var path = createVaultDialog.FilePath;
                 var password = createVaultDialog.Password;
                 var compositeKey = new CompositeKey(password, null);
-                var passStoreAccessor = new PassStoreFileAccessor(
-                    filename: path,
-                    create: true,
-                    createOptions: new StoreCreationOptions()
-                    {
-                        Key = compositeKey,
-                        LockTimeoutSeconds = 800
-                    });
 
-                recentFilesService.Remember(path);
+                try
+                {
+                    var passStoreAccessor = new PassStoreFileAccessor(
+                        filename: path,
+                        create: true,
+                        createOptions: new StoreCreationOptions()
+                        {
+                            Key = compositeKey,
+                            LockTimeoutSeconds = 800
+                        });
 
-                IPassStore passStore = passStoreAccessor;
+                    recentFilesService.Remember(path);
-                OpenRepositoryWindow(passStore);
+
+                    IPassStore passStore = passStoreAccessor;
+                    OpenRepositoryWindow(passStore);
+                } catch (IOException exception)
+                {
+                    Console.WriteLine($"I/O error when creating \"{path}\": {exception}");
+                    await new ErrorDialog("Cannot create the password store", "File error").ShowDialog(this);
+                } catch (Exception exception)
+                {
+                    Console.WriteLine($"Unknown error when creating \"{path}\": {exception}");
+                    await new ErrorDialog("Cannot create the password store", "Unknown error").ShowDialog(this);
+                }
             }
         }
 
@@ -61,17 +74,17 @@ namespace KeyKeeper.Views
             {
                 Title = "Открыть хранилище паролей",
                 AllowMultiple = false,
-                FileTypeFilter = new[]
+                FileTypeFilter =
-                {
+                [
                     new FilePickerFileType("KeyKeeper files")
                     {
-                        Patterns = new[] { "*.kkp" }
+                        Patterns = ["*.kkp"]
                     },
                     new FilePickerFileType("All files")
                     {
-                        Patterns = new[] { "*.*" }
+                        Patterns = ["*.*"]
                     }
-                }
+                ]
             });
 
             if (files.Count > 0)
@@ -80,17 +93,69 @@ namespace KeyKeeper.Views
                 if (file.TryGetLocalPath() is string path)
                 {
                     recentFilesService.Remember(path);
-                    OpenRepositoryWindow(new PassStoreFileAccessor(path, false, null));
+                    IPassStore? passStore;
+                    try
+                    {
+                        passStore = new PassStoreFileAccessor(path, false, null);
+                    } catch (PassStoreFileException exc)
+                    {
+                        await new ErrorDialog($"This password store file has a problem: {exc.Message}", "File format error").ShowDialog(this);
+                        Console.WriteLine($"Format error when opening \"{path}\": {exc}");
+                        recentFilesService.Forget(path);
+                        return;
+                    } catch (FileNotFoundException)
+                    {
+                        await new ErrorDialog("This password store no longer exists", "File error").ShowDialog(this);
+                        recentFilesService.Forget(path);
+                        return;
+                    } catch (IOException exc)
+                    {
+                        Console.WriteLine($"I/O error when opening \"{path}\": {exc}");
+                        await new ErrorDialog("Cannot open this password store", "File error").ShowDialog(this);
+                        return;
+                    } catch (Exception exc)
+                    {
+                        Console.WriteLine($"Unknown error when opening \"{path}\": {exc}");
+                        await new ErrorDialog("Cannot open this password store", "File error").ShowDialog(this);
+                        return;
+                    }
+                    OpenRepositoryWindow(passStore);
                 }
             }
         }
 
-        private void RecentVaultsListItem_DoubleTapped(object sender, RoutedEventArgs e)
+        private async void RecentVaultsListItem_DoubleTapped(object sender, RoutedEventArgs e)
         {
             if (sender is Control c && c.DataContext is RecentFile recentFile)
             {
                 recentFilesService.Remember(recentFile.Path);
-                OpenRepositoryWindow(new PassStoreFileAccessor(recentFile.Path, false, null));
+                IPassStore? passStore;
+                try
+                {
+                    passStore = new PassStoreFileAccessor(recentFile.Path, false, null);
+                } catch (PassStoreFileException exc)
+                {
+                    await new ErrorDialog($"This password store file has a problem: {exc.Message}", "File format error").ShowDialog(this);
+                    Console.WriteLine($"Format error when opening \"{recentFile.Path}\" from recents: {exc}");
+                    recentFilesService.Forget(recentFile.Path);
+                    return;
+                } catch (FileNotFoundException)
+                {
+                    await new ErrorDialog("This password store no longer exists", "File error").ShowDialog(this);
+                    recentFilesService.Forget(recentFile.Path);
+                    return;
+                } catch (IOException exc)
+                {
+                    Console.WriteLine($"I/O error when opening \"{recentFile.Path}\" from recents: {exc}");
+                    await new ErrorDialog("Cannot open this password store", "File error").ShowDialog(this);
+                    return;
+                } catch (Exception exc)
+                {
+                    Console.WriteLine($"Unknown error when opening \"{recentFile.Path}\" from recents: {exc}");
+                    await new ErrorDialog("Cannot open this password store", "File error").ShowDialog(this);
+                    return;
+                }
+                OpenRepositoryWindow(passStore);
             }
         }
 
@@ -104,11 +169,11 @@ namespace KeyKeeper.Views
             {
                 if (AppSettings.ExitOnRepositoryClose)
                 {
-                    this.Close();
+                    Close();
                 }
                 else
                 {
-                    this.Show();
+                    Show();
                 }
             };
             repositoryWindow.Show();