add "Add Group" button

src/KeyKeeper/PasswordStore/EntryIconType.cs

@@ -2,7 +2,7 @@ using System;
 
 namespace KeyKeeper.PasswordStore;
 
-public static class EntryIconType
+public static class BuiltinEntryIconType
 {
     public static readonly Guid KEY = Guid.Parse("65ab3d55-1652-4f66-aac9-c3617f14e308");
     public static readonly Guid DEFAULT = KEY;

src/KeyKeeper/ViewModels/EntryEditViewModel.cs

@@ -323,7 +323,6 @@ public class EntryEditViewModel : ViewModelBase
             }
             catch (Exception)
             {
-                // Validation should have caught this, but handle gracefully
                 totp = null;
             }
         }
@@ -332,7 +331,7 @@ public class EntryEditViewModel : ViewModelBase
             id,
             created,
             DateTime.UtcNow,
-            EntryIconType.DEFAULT,
+            BuiltinEntryIconType.DEFAULT,
             EntryName.Trim(),
             new LoginField() { Type = LOGIN_FIELD_USERNAME_ID, Value = Username.Trim() },
             new LoginField() { Type = LOGIN_FIELD_PASSWORD_ID, Value = Password },

src/KeyKeeper/ViewModels/UnlockedRepositoryViewModel.cs

@@ -95,6 +95,15 @@ public class UnlockedRepositoryViewModel : ViewModelBase
         }
     }
 
+    public void AddGroup(PassStoreEntryGroup group)
+    {
+        if (rootDirectory == null)
+            return;
+        rootDirectory.AddEntry(group);
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(PasswordGroups));
+    }
+
     public void DeleteEntry(Guid id)
     {
         currentDirectory.DeleteEntry(id);

src/KeyKeeper/Views/CreateGroupDialog.axaml

@@ -0,0 +1,60 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="KeyKeeper.Views.CreateGroupDialog"
+        Title="Create New Group"
+        Background="White"
+        Icon="/Assets/icon.ico"
+        Width="420" Height="320"
+        WindowStartupLocation="CenterOwner"
+        CanResize="False">
+
+    <StackPanel Margin="20" Spacing="16">
+        <TextBlock Text="Create new group"
+                   FontSize="20"
+                   FontWeight="Bold"
+                   Foreground="#2328C4"/>
+
+        <StackPanel Spacing="6">
+            <TextBlock Text="Group name" FontWeight="SemiBold" Foreground="Black" />
+            <TextBox x:Name="NameTextBox"
+                     Watermark="Enter group name"
+                     Padding="10,8"/>
+        </StackPanel>
+
+        <StackPanel Spacing="6">
+            <TextBlock Text="Icon" FontWeight="SemiBold" Foreground="Black" />
+            <ListBox x:Name="IconListBox"
+                     Height="80"
+                     SelectionMode="Single"
+                     Background="#F5F5F5">
+                <ListBox.ItemsPanel>
+                    <ItemsPanelTemplate>
+                        <StackPanel Orientation="Horizontal" />
+                    </ItemsPanelTemplate>
+                </ListBox.ItemsPanel>
+                <ListBox.ItemTemplate>
+                    <DataTemplate x:CompileBindings="False">
+                        <Svg Path="{Binding IconPath}" Width="48" Height="48" Margin="6"/>
+                    </DataTemplate>
+                </ListBox.ItemTemplate>
+            </ListBox>
+        </StackPanel>
+
+        <TextBlock x:Name="ErrorText"
+                   FontSize="12"
+                   Foreground="Red"
+                   Text=""
+                   IsVisible="False"/>
+
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Spacing="10">
+            <Button Content="Cancel"
+                    Width="80"
+                    Click="CancelButton_Click"/>
+            <Button x:Name="CreateButton"
+                    Content="Create"
+                    Width="80"
+                    IsEnabled="False"
+                    Click="CreateButton_Click"/>
+        </StackPanel>
+    </StackPanel>
+</Window>

src/KeyKeeper/Views/CreateGroupDialog.axaml.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using KeyKeeper.PasswordStore;
+
+namespace KeyKeeper.Views;
+
+public partial class CreateGroupDialog : Window
+{
+    public string GroupName { get; private set; } = string.Empty;
+    public Guid IconType { get; private set; } = BuiltinEntryIconType.DEFAULT;
+    public bool Success { get; private set; }
+
+    private record IconChoice(Guid Id)
+    {
+        public string IconPath => $"avares://KeyKeeper/Assets/builtin-entry-icon-{Id}.svg";
+    }
+
+    public CreateGroupDialog()
+    {
+        InitializeComponent();
+
+        var icons = new List<IconChoice>
+        {
+            new(BuiltinEntryIconType.KEY),
+        };
+        IconListBox.ItemsSource = icons;
+        IconListBox.SelectedIndex = 0;
+
+        NameTextBox.TextChanged += (_, _) => UpdateCreateButtonState();
+        KeyDown += OnKeyDown;
+    }
+
+    private void UpdateCreateButtonState()
+    {
+        CreateButton.IsEnabled = !string.IsNullOrWhiteSpace(NameTextBox.Text);
+    }
+
+    private void OnKeyDown(object? sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Escape)
+            Close();
+        else if (e.Key == Key.Enter && CreateButton.IsEnabled)
+            Submit();
+    }
+
+    private void CreateButton_Click(object? sender, RoutedEventArgs e) => Submit();
+
+    private void CancelButton_Click(object? sender, RoutedEventArgs e)
+    {
+        Success = false;
+        Close();
+    }
+
+    private void Submit()
+    {
+        var name = NameTextBox.Text?.Trim() ?? string.Empty;
+        if (string.IsNullOrEmpty(name))
+        {
+            ErrorText.Text = "Name cannot be empty";
+            ErrorText.IsVisible = true;
+            return;
+        }
+
+        GroupName = name;
+        if (IconListBox.SelectedItem is IconChoice choice)
+            IconType = choice.Id;
+
+        Success = true;
+        Close();
+    }
+}

src/KeyKeeper/Views/RepositoryWindow.axaml

@@ -96,6 +96,14 @@
                                         Height="30"
                                         HorizontalAlignment="Left"
                                         Margin="0,20,0,0"/>
+
+                        <!-- New Group -->
+                        <Button Content="New Group"
+                                        Classes="accentSidebarButton"
+                                        Click="AddGroupButton_Click"
+                                        Height="30"
+                                        HorizontalAlignment="Left"
+                                        Margin="0,20,0,0"/>
                     </StackPanel>
                 </Border>
 

src/KeyKeeper/Views/RepositoryWindow.axaml.cs

@@ -153,6 +153,34 @@ public partial class RepositoryWindow : Window
         }
     }
 
+    private async void AddGroupButton_Click(object sender, RoutedEventArgs args)
+    {
+        if (DataContext is RepositoryWindowViewModel vm_ && vm_.CurrentPage is UnlockedRepositoryViewModel vm)
+        {
+            CreateGroupDialog dialog = new();
+
+            vm_.StopLockTimer();
+
+            await dialog.ShowDialog(this);
+
+            vm_.StartLockTimer();
+
+            if (dialog.Success)
+            {
+                var group = new PassStoreEntryGroup(
+                    Guid.NewGuid(),
+                    DateTime.UtcNow,
+                    DateTime.UtcNow,
+                    dialog.IconType,
+                    dialog.GroupName,
+                    FileFormatConstants.GROUP_TYPE_SIMPLE
+                );
+                vm.AddGroup(group);
+                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Group created");
+            }
+        }
+    }
+
     private void SaveButton_Click(object sender, RoutedEventArgs args)
     {
         if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)