merge branch 'feature/password-groups'

src/KeyKeeper/Models/GroupData.cs

@@ -0,0 +1,5 @@
+using System;
+
+namespace KeyKeeper.Models;
+
+public record GroupEditData(string Name, Guid IconType);

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/PasswordStore/FileFormatConstants.cs

@@ -19,6 +19,7 @@ static class FileFormatConstants
     public const uint FILE_FIELD_END = 0x010ba81a;
     public const byte ENTRY_PASS_ID = 0x00;
     public const byte ENTRY_GROUP_ID = 0x01;
+    public const byte ENTRY_LINK_ID = 0x02;
     public const byte LOGIN_FIELD_PASSWORD_ID = 0x00;
     public const byte LOGIN_FIELD_USERNAME_ID = 0x01;
     public const byte LOGIN_FIELD_EMAIL_ID = 0x02;

src/KeyKeeper/PasswordStore/IPassStore.cs

@@ -1,3 +1,4 @@
+using System;
 using KeyKeeper.PasswordStore.Crypto;
 
 namespace KeyKeeper.PasswordStore;
@@ -6,10 +7,15 @@ public interface IPassStore
 {
     bool Locked { get; }
 
-    IPassStoreDirectory GetRootDirectory();
+    PassStoreEntryGroup GetRootDirectory();
-    IPassStoreDirectory? GetGroupByType(byte groupType);
+    PassStoreEntryGroup? GetGroupByType(byte groupType);
+    public PassStoreEntry GetEntryById(Guid id);
     int GetTotalEntryCount();
     void Unlock(CompositeKey key);
     void Lock();
     void Save();
+
+    bool DeleteEntry(PassStoreEntryGroup? group, Guid id);
+    void AddEntry(PassStoreEntryGroup group, PassStoreEntry entry);
+    void UpdateEntry(PassStoreEntryGroup? group, Guid id, PassStoreEntry entry);
 }

src/KeyKeeper/PasswordStore/IPassStoreDirectory.cs

@@ -1,11 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace KeyKeeper.PasswordStore;
-
-public interface IPassStoreDirectory : IEnumerable<PassStoreEntry>
-{
-    bool DeleteEntry(Guid id);
-    void AddEntry(PassStoreEntry entry);
-    void UpdateEntry(Guid id, PassStoreEntry entry);
-}

src/KeyKeeper/PasswordStore/PassStoreEntry.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using static KeyKeeper.PasswordStore.FileFormatConstants;
 
@@ -13,6 +14,7 @@ public abstract class PassStoreEntry
     public Guid IconType { get; set; }
     public string Name { get; set; }
     public PassStoreEntryType Type { get; set; }
+    public List<PassStoreEntry> Backlinks = new();
     public string IconPath
     {
         get
@@ -20,6 +22,7 @@ public abstract class PassStoreEntry
             return $"avares://KeyKeeper/Assets/builtin-entry-icon-{IconType}.svg";
         }
     }
+    public virtual string DisplayName => Name;
 
     public void WriteToStream(Stream str)
     {
@@ -77,6 +80,9 @@ public abstract class PassStoreEntry
             } else if (entryType == ENTRY_PASS_ID)
             {
                 return PassStoreEntryPassword.ReadFromStream(entryStream, id, createdAt, modifiedAt, iconType, name);
+            } else if (entryType == ENTRY_LINK_ID)
+            {
+                return PassStoreEntryLink.ReadFromStream(entryStream, id, createdAt, modifiedAt, iconType, name);
             } else
             {
                 throw PassStoreFileException.InvalidPassStoreEntry;

src/KeyKeeper/PasswordStore/PassStoreEntryGroup.cs

@@ -2,16 +2,27 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using static KeyKeeper.PasswordStore.FileFormatConstants;
 
 namespace KeyKeeper.PasswordStore;
 
-public class PassStoreEntryGroup : PassStoreEntry, IPassStoreDirectory
+public class PassStoreEntryGroup : PassStoreEntry, IEnumerable<PassStoreEntry>
 {
     public byte GroupType { get; set; }
     public Guid? CustomGroupSubtype { get; set; }
     public List<PassStoreEntry> ChildEntries { get; set; }
 
+    public override string DisplayName => GroupType switch
+    {
+        GROUP_TYPE_DEFAULT => "All Passwords",
+        GROUP_TYPE_FAVOURITES => "Favourites",
+        GROUP_TYPE_ROOT => ":root:",
+        _ => Name
+    };
+
+    public IEnumerable<PassStoreEntryGroup> ChildGroups => ChildEntries.OfType<PassStoreEntryGroup>();
+
     public PassStoreEntryGroup(Guid id, DateTime createdAt, DateTime modifiedAt,
                                Guid iconType, string name, byte groupType,
                                List<PassStoreEntry>? children = null,
@@ -64,42 +75,6 @@ public class PassStoreEntryGroup : PassStoreEntry, IPassStoreDirectory
         }
     }
 
-    public void AddEntry(PassStoreEntry entry)
-    {
-        entry.Parent = this;
-        ChildEntries.Add(entry);
-    }
-
-    public bool DeleteEntry(Guid id)
-    {
-        if (ChildEntries == null)
-            return false;
-        for (int i = 0; i < ChildEntries.Count; i++)
-        {
-            if (ChildEntries[i].Id == id)
-            {
-                ChildEntries.RemoveAt(i);
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public void UpdateEntry(Guid id, PassStoreEntry entry)
-    {
-        entry.Parent = this;
-        if (ChildEntries == null)
-            return;
-        for (int i = 0; i < ChildEntries.Count; i++)
-        {
-            if (ChildEntries[i].Id == id)
-            {
-                ChildEntries[i] = entry;
-                return;
-            }
-        }
-    }
-
     IEnumerator<PassStoreEntry> IEnumerable<PassStoreEntry>.GetEnumerator()
     {
         return ChildEntries.GetEnumerator();

src/KeyKeeper/PasswordStore/PassStoreEntryLink.cs

@@ -0,0 +1,58 @@
+using System;
+using System.IO;
+using static KeyKeeper.PasswordStore.FileFormatConstants;
+
+namespace KeyKeeper.PasswordStore;
+
+public class PassStoreEntryLink : PassStoreEntry
+{
+    public PassStoreEntry? LinkTarget;
+    public Guid LinkTargetId;
+
+    public override string DisplayName => LinkTarget?.DisplayName ?? Name;
+
+    public PassStoreEntryLink(Guid id, DateTime createdAt, DateTime modifiedAt,
+                              Guid targetId, PassStoreEntry? target = null)
+    {
+        Id = id;
+        CreationDate = createdAt;
+        ModificationDate = modifiedAt;
+        IconType = BuiltinEntryIconType.DEFAULT;
+        Name = "";
+        LinkTargetId = targetId;
+        LinkTarget = target;
+    }
+
+    public static PassStoreEntry ReadFromStream(Stream str, Guid id, DateTime createdAt, DateTime modifiedAt, Guid iconType, string name)
+    {
+        BinaryReader rd = new(str);
+        try
+        {
+            byte[] guidBuffer = new byte[16];
+            if (rd.Read(guidBuffer) < 16)
+                throw PassStoreFileException.UnexpectedEndOfFile;
+            Guid linkTargetId = new(guidBuffer);
+
+            return new PassStoreEntryLink(id, createdAt, modifiedAt, linkTargetId);
+        } catch (EndOfStreamException)
+        {
+            throw PassStoreFileException.UnexpectedEndOfFile;
+        }
+    }
+
+    public override string ToString()
+    {
+        return string.Format(
+            "EntryLink (id={0} target_id={1} target={2})",
+            Id, LinkTargetId, LinkTarget);
+    }
+
+    protected override byte[] InnerSerialize()
+    {
+        MemoryStream str = new();
+        str.WriteByte(ENTRY_LINK_ID);
+        str.Write(LinkTargetId.ToByteArray());
+
+        return str.ToArray();
+    }
+}

src/KeyKeeper/PasswordStore/PassStoreEntryType.cs

@@ -4,4 +4,5 @@ public enum PassStoreEntryType
 {
     Password,
     Directory,
+    Link,
 }

src/KeyKeeper/PasswordStore/PassStoreFileAccessor.cs

@@ -14,20 +14,22 @@ namespace KeyKeeper.PasswordStore;
 /// </summary>
 public class PassStoreFileAccessor : IPassStore
 {
-    private const ushort FORMAT_VERSION_MAJOR = 0;
+    private const ushort FORMAT_VERSION_MAJOR = 1;
-    private const ushort FORMAT_VERSION_MINOR = 0;
+    private const ushort FORMAT_VERSION_MINOR = 1;
     private static readonly byte[] FORMAT_MAGIC = [0xf5, 0x3a, 0xa4, 0xb7, 0xeb, 0xd9, 0xc2, 0x12];
 
     private string filename;
     private byte[]? key;
     private InnerEncryptionInfo? innerCrypto;
     private OuterEncryptionHeader? outerCryptoHdr;
-    private PassStoreEntry? root;
+    private PassStoreEntryGroup? root;
+    private Dictionary<Guid, PassStoreEntry> allEntries;
 
     public PassStoreFileAccessor(string filename, bool create, StoreCreationOptions? createOptions)
     {
         this.filename = filename;
         this.key = null;
+        this.allEntries = new();
         if (!create)
         {
             CheckStoreFile();
@@ -42,14 +44,14 @@ public class PassStoreFileAccessor : IPassStore
         get { return key == null; }
     }
 
-    public IPassStoreDirectory GetRootDirectory()
+    public PassStoreEntryGroup GetRootDirectory()
     {
         if (Locked)
             throw new InvalidOperationException();
-        return (IPassStoreDirectory)root!;
+        return root!;
     }
 
-    public IPassStoreDirectory? GetGroupByType(byte groupType)
+    public PassStoreEntryGroup? GetGroupByType(byte groupType)
     {
         if (Locked)
             throw new InvalidOperationException();
@@ -102,7 +104,9 @@ public class PassStoreFileAccessor : IPassStore
                     case FILE_FIELD_CONFIG:
                         break;
                     case FILE_FIELD_STORE:
-                        this.root = PassStoreEntry.ReadFromStream(cryptoReader);
+                        root = PassStoreEntry.ReadFromStream(cryptoReader) as PassStoreEntryGroup;
+                        AddEntriesToDict(root!);
+                        ResolveLinks();
                         break;
                     case FILE_FIELD_END:
                         end = true;
@@ -123,6 +127,8 @@ public class PassStoreFileAccessor : IPassStore
         Save();
         Array.Fill<byte>(key!, 0);
         key = null;
+        root = null;
+        allEntries = new();
     }
 
     public void Save()
@@ -163,6 +169,97 @@ public class PassStoreFileAccessor : IPassStore
         file.SetLength(file.Position);
     }
 
+    public void AddEntry(PassStoreEntryGroup group, PassStoreEntry entry)
+    {
+        if (Locked) throw new InvalidOperationException("store locked");
+
+        entry.Parent = group;
+        group.ChildEntries.Add(entry);
+        if (entry is PassStoreEntryLink link)
+        {
+            link.LinkTarget ??= allEntries[link.LinkTargetId];
+            if (link.LinkTarget == null)
+                throw new ArgumentException("invalid link target");
+            PassStoreEntry t = link.LinkTarget;
+            if (!t.Backlinks.Contains(entry))
+                t.Backlinks.Add(entry);
+        }
+        allEntries[entry.Id] = entry;
+    }
+
+    public bool DeleteEntry(PassStoreEntryGroup? group, Guid id)
+    {
+        if (Locked) throw new InvalidOperationException("store locked");
+
+        if (group == null)
+            group = allEntries[id]?.Parent;
+
+        if (group == null || group.ChildEntries == null)
+            return false;
+
+        var ch = group.ChildEntries;
+        for (int i = 0; i < ch.Count; i++)
+        {
+            PassStoreEntry child = ch[i];
+            if (child.Id == id)
+            {
+                if (child is PassStoreEntryLink lnk && lnk.LinkTarget != null)
+                {
+                    lnk.LinkTarget.Backlinks.Remove(lnk);
+                }
+                while (child.Backlinks.Count > 0)
+                {
+                    PassStoreEntry bl = child.Backlinks[0];
+                    if (bl is PassStoreEntryLink)
+                        DeleteEntry(bl.Parent, bl.Id);
+                }
+                allEntries.Remove(child.Id);
+                ch.RemoveAt(i);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public void UpdateEntry(PassStoreEntryGroup? group, Guid id, PassStoreEntry entry)
+    {
+        if (Locked) throw new InvalidOperationException("store locked");
+
+        if (group == null)
+            group = allEntries[id]?.Parent;
+
+        if (group == null || group.ChildEntries == null)
+            return;
+
+        entry.Parent = group;
+        entry.Backlinks = allEntries[id].Backlinks;
+        foreach (PassStoreEntry bl in entry.Backlinks)
+        {
+            if (bl is PassStoreEntryLink lnk)
+            {
+                lnk.LinkTarget = entry;
+            }
+        }
+        
+        var ch = group.ChildEntries;
+        for (int i = 0; i < ch.Count; i++)
+        {
+            if (ch[i].Id == id)
+            {
+                allEntries.Remove(ch[i].Id); // убрать
+                allEntries[entry.Id] = entry;
+                ch[i] = entry;
+                return;
+            }
+        }
+    }
+
+    public PassStoreEntry GetEntryById(Guid id)
+    {
+        if (Locked) throw new InvalidOperationException("store locked");
+        return allEntries[id];
+    }
+
     /// <summary>
     /// Проверяет внешнюю целостность файла хранилища, то есть:
     /// 1. совпадает сигнатура (magic number)
@@ -213,6 +310,30 @@ public class PassStoreFileAccessor : IPassStore
         OuterEncryptionUtil.CheckOuterEncryptionHeader(file);
     }
 
+    private void AddEntriesToDict(PassStoreEntryGroup root)
+    {
+        allEntries.Add(root.Id, root);
+        foreach (PassStoreEntry entry in root.ChildEntries)
+        {
+            if (entry is PassStoreEntryGroup group)
+                AddEntriesToDict(group);
+            else
+                allEntries.Add(entry.Id, entry);
+        }
+    }
+
+    private void ResolveLinks()
+    {
+        foreach (var kv in allEntries)
+        {
+            if (kv.Value is PassStoreEntryLink lnk)
+            {
+                lnk.LinkTarget = allEntries[lnk.LinkTargetId];
+                lnk.LinkTarget.Backlinks.Add(lnk);
+            }
+        }
+    }
+
     private void CreateNewAndUnlock(StoreCreationOptions options)
     {
         using FileStream file = File.Open(filename, FileMode.Create, FileAccess.Write, FileShare.None);
@@ -257,9 +378,12 @@ public class PassStoreFileAccessor : IPassStore
 
         cryptoWriter.Flush();
         cryptoWriter.Dispose();
+
+        AddEntriesToDict(root);
+        ResolveLinks();
     }
 
-    private PassStoreEntry WriteInitialStoreTree(OuterEncryptionWriter w)
+    private PassStoreEntryGroup WriteInitialStoreTree(OuterEncryptionWriter w)
     {
         PassStoreEntryGroup defaultGroup = new(
             Guid.NewGuid(),
@@ -269,6 +393,15 @@ public class PassStoreFileAccessor : IPassStore
             "",
             GROUP_TYPE_DEFAULT
         );
+        PassStoreEntryGroup favourites = new(
+            Guid.NewGuid(),
+            DateTime.UtcNow,
+            DateTime.UtcNow,
+            Guid.Empty,
+            "",
+            GROUP_TYPE_FAVOURITES
+        );
+
         PassStoreEntryGroup root = new(
             Guid.NewGuid(),
             DateTime.UtcNow,
@@ -276,9 +409,10 @@ public class PassStoreFileAccessor : IPassStore
             Guid.Empty,
             "",
             GROUP_TYPE_ROOT,
-            [defaultGroup]
+            [defaultGroup, favourites]
         );
         defaultGroup.Parent = root;
+        favourites.Parent = root;
         root.WriteToStream(w);
         return root;
     }

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

@@ -10,18 +10,43 @@ namespace KeyKeeper.ViewModels;
 public class UnlockedRepositoryViewModel : ViewModelBase
 {
     private IPassStore passStore;
-    private IPassStoreDirectory currentDirectory;
+    private PassStoreEntryGroup currentDirectory;
+    private PassStoreEntryGroup? rootDirectory;
     private bool hasUnsavedChanges;
     private DispatcherTimer? _totpRefreshTimer;
     private Dictionary<Guid, string> _totpCodes = new();
 
-    public IEnumerable<PassStoreEntryPassword> Passwords
+    public IEnumerable<PassStoreEntry> Passwords
     {
         get
         {
             return currentDirectory
-                .Where(entry => entry is PassStoreEntryPassword)
+                .Where(entry => entry is PassStoreEntryPassword || entry is PassStoreEntryLink lnk && lnk.LinkTarget is PassStoreEntryPassword);
-                .Select(entry => (entry as PassStoreEntryPassword)!);
+        }
+    }
+
+    public IEnumerable<PassStoreEntryGroup> PasswordGroups
+    {
+        get
+        {
+            if (rootDirectory == null) return [];
+            return rootDirectory
+                .Where(entry => entry is PassStoreEntryGroup)
+                .Select(entry => (entry as PassStoreEntryGroup)!);
+        }
+    }
+    public PassStoreEntryGroup SelectedPasswordGroup
+    {
+        get
+        {
+            return PasswordGroups.First(group => group == currentDirectory);
+        }
+        set
+        {
+            if (PasswordGroups.Any(group => group == value))
+            {
+                ChangeDirectory(value);
+            }
         }
     }
 
@@ -35,10 +60,11 @@ public class UnlockedRepositoryViewModel : ViewModelBase
         }
     }
 
-    public UnlockedRepositoryViewModel(IPassStore store, IPassStoreDirectory directory)
+    public UnlockedRepositoryViewModel(IPassStore store, PassStoreEntryGroup group)
     {
         passStore = store;
-        currentDirectory = directory;
+        currentDirectory = group;
+        rootDirectory = group.Parent;
         HasUnsavedChanges = false;
         InitializeTotpCodes();
         StartTotpRefreshTimer();
@@ -62,24 +88,118 @@ public class UnlockedRepositoryViewModel : ViewModelBase
     {
         if (entry is PassStoreEntryPassword)
         {
-            currentDirectory.AddEntry(entry);
+            if (currentDirectory.GroupType == FileFormatConstants.GROUP_TYPE_DEFAULT)
+            {
+                passStore.AddEntry(currentDirectory, entry);
+            } else
+            {
+                // добавляем в All Passwords, но оставляем ссылку в текущей папке
+                passStore.AddEntry(passStore.GetGroupByType(FileFormatConstants.GROUP_TYPE_DEFAULT)!, entry);
+                passStore.AddEntry(currentDirectory, new PassStoreEntryLink(Guid.NewGuid(), DateTime.Now, DateTime.Now, entry.Id, entry));
+            }
             HasUnsavedChanges = true;
             OnPropertyChanged(nameof(Passwords));
         }
     }
 
+    public void AddGroup(PassStoreEntryGroup group)
+    {
+        if (rootDirectory == null)
+            return;
+        passStore.AddEntry(rootDirectory, group);
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(PasswordGroups));
+    }
+
     public void DeleteEntry(Guid id)
     {
-        currentDirectory.DeleteEntry(id);
+        PassStoreEntry entry = passStore.GetEntryById(id);
+        if (entry is PassStoreEntryLink lnk)
+        {
+            passStore.DeleteEntry(lnk.LinkTarget!.Parent, lnk.LinkTargetId);
+            passStore.DeleteEntry(currentDirectory, id);
+        } else
+        {
+            passStore.DeleteEntry(currentDirectory, id);
+        }
         HasUnsavedChanges = true;
         OnPropertyChanged(nameof(Passwords));
     }
 
-    public void UpdateEntry(PassStoreEntryPassword updatedEntry)
+    public bool AddEntryToGroup(PassStoreEntry entry, PassStoreEntryGroup targetGroup)
     {
-        currentDirectory.UpdateEntry(updatedEntry.Id, updatedEntry);
+        PassStoreEntryPassword? pwd = FollowLinkIfNeeded(entry);
+        if (pwd == null) return false;
+
+        foreach (var bl in pwd.Backlinks)
+        {
+            if (bl is PassStoreEntryLink lnk && lnk.Parent == targetGroup)
+                return false;
+        }
+        passStore.AddEntry(targetGroup, new PassStoreEntryLink(Guid.NewGuid(), DateTime.Now, DateTime.Now, pwd.Id, pwd));
+
         HasUnsavedChanges = true;
         OnPropertyChanged(nameof(Passwords));
+        return true;
+    }
+
+    public void RemoveEntryFromGroup(PassStoreEntry entry)
+    {
+        if (currentDirectory.GroupType == FileFormatConstants.GROUP_TYPE_DEFAULT)
+            return;
+
+        passStore.DeleteEntry(currentDirectory, entry.Id);
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(Passwords));
+    }
+
+    public void RemoveEntryFromFavourites(PassStoreEntry entry)
+    {
+        var favouritesGroup = PasswordGroups.FirstOrDefault(g => g.GroupType == FileFormatConstants.GROUP_TYPE_FAVOURITES);
+        if (favouritesGroup == null)
+            return;
+
+        PassStoreEntryPassword? pwd = FollowLinkIfNeeded(entry);
+        if (pwd == null)
+            return;
+
+        var linkToRemove = pwd.Backlinks.FirstOrDefault(bl => bl is PassStoreEntryLink lnk && lnk.Parent == favouritesGroup);
+        if (linkToRemove != null)
+        {
+            passStore.DeleteEntry(favouritesGroup, linkToRemove.Id);
+            HasUnsavedChanges = true;
+            OnPropertyChanged(nameof(Passwords));
+        }
+    }
+
+    public void UpdateEntry(PassStoreEntryPassword updatedEntry)
+    {
+        passStore.UpdateEntry(null, updatedEntry.Id, updatedEntry);
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(Passwords));
+    }
+
+    public void UpdateGroup(PassStoreEntryGroup group, string newName, Guid newIconType)
+    {
+        group.Name = newName;
+        group.IconType = newIconType;
+        group.ModificationDate = DateTime.UtcNow;
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(PasswordGroups));
+    }
+
+    public void DeleteGroup(PassStoreEntryGroup group)
+    {
+        if (rootDirectory == null)
+            return;
+
+        passStore.DeleteEntry(rootDirectory, group.Id);
+        if (currentDirectory == group && rootDirectory != null)
+        {
+            ChangeDirectory(rootDirectory.ChildGroups.FirstOrDefault() ?? rootDirectory);
+        }
+        HasUnsavedChanges = true;
+        OnPropertyChanged(nameof(PasswordGroups));
     }
 
     public void Save()
@@ -88,10 +208,36 @@ public class UnlockedRepositoryViewModel : ViewModelBase
         HasUnsavedChanges = false;
     }
 
+    public static PassStoreEntryPassword? FollowLinkIfNeeded(PassStoreEntry entry)
+    {
+        if (entry is PassStoreEntryPassword passwordEntry)
+        {
+            return passwordEntry;
+        }
+        else if (entry is PassStoreEntryLink link && link.LinkTarget is PassStoreEntryPassword t)
+        {
+            return t;
+        }
+        return null;
+    }
+
+    private void ChangeDirectory(PassStoreEntryGroup newDir)
+    {
+        if (newDir == currentDirectory)
+            return;
+
+        currentDirectory = newDir;
+        InitializeTotpCodes();
+        StartTotpRefreshTimer();
+
+        OnPropertyChanged(nameof(SelectedPasswordGroup));
+        OnPropertyChanged(nameof(Passwords));
+    }
+
     private void InitializeTotpCodes()
     {
         _totpCodes.Clear();
-        foreach (var entry in Passwords.Where(e => e.Totp != null))
+        foreach (var entry in Passwords.Select(FollowLinkIfNeeded).Where(e => e?.Totp != null))
         {
             _totpCodes[entry.Id] = TotpCodeGenerator.GenerateCode(entry.Totp!);
         }
@@ -102,6 +248,10 @@ public class UnlockedRepositoryViewModel : ViewModelBase
         // Calculate time until next TOTP period boundary
         int secondsUntilNextCode = CalculateSecondsUntilNextTotpRefresh();
 
+        if (_totpRefreshTimer != null)
+        {
+            _totpRefreshTimer.Stop();
+        }
         _totpRefreshTimer = new DispatcherTimer
         {
             Interval = TimeSpan.FromSeconds(secondsUntilNextCode)
@@ -129,7 +279,7 @@ public class UnlockedRepositoryViewModel : ViewModelBase
     private int CalculateSecondsUntilNextTotpRefresh()
     {
         // Find the minimum seconds until next code change across all TOTP entries
-        var totpEntries = Passwords.Where(e => e.Totp != null).ToList();
+        var totpEntries = Passwords.Select(FollowLinkIfNeeded).Where(e => e?.Totp != null).ToList();
         if (totpEntries.Count == 0)
             return 60; // Default to 60 seconds if no TOTP entries
 

src/KeyKeeper/Views/CloseConfirmationDialog.axaml

@@ -16,6 +16,7 @@
         <StackPanel Grid.Row="1"
                     Orientation="Horizontal"
                     HorizontalAlignment="Right"
+                    VerticalAlignment="Bottom"
                     Spacing="8"
                     Margin="0,16,0,0">
             <Button Content="Save"

src/KeyKeeper/Views/ConfirmationDialog.axaml

@@ -0,0 +1,38 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="KeyKeeper.Views.ConfirmationDialog"
+        Title="Confirm Action"
+        Background="White"
+        Icon="/Assets/icon.ico"
+        Width="380" Height="180"
+        WindowStartupLocation="CenterOwner"
+        CanResize="False">
+
+    <Grid Margin="20" RowDefinitions="*,*,Auto">
+
+        <TextBlock Grid.Row="0"
+                   x:Name="TitleText"
+                   FontSize="18"
+                   FontWeight="Bold"
+                   Foreground="#2328C4"
+                   TextWrapping="Wrap"/>
+
+        <TextBlock Grid.Row="1"
+                   x:Name="MessageText"
+                   FontSize="14"
+                   Foreground="Black"
+                   TextWrapping="Wrap"/>
+
+        <StackPanel Grid.Row="2" Orientation="Horizontal"
+                    HorizontalAlignment="Right" Spacing="10" VerticalAlignment="Bottom">
+
+            <Button Content="Cancel"
+                    Width="80"
+                    Click="CancelButton_Click"/>
+            <Button x:Name="ConfirmButton"
+                    Content="Confirm"
+                    Width="80"
+                    Click="ConfirmButton_Click"/>
+        </StackPanel>
+    </Grid>
+</Window>

src/KeyKeeper/Views/ConfirmationDialog.axaml.cs

@@ -0,0 +1,40 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace KeyKeeper.Views;
+
+public partial class ConfirmationDialog : Window
+{
+    public bool Confirmed { get; private set; }
+
+    public ConfirmationDialog()
+    {
+        InitializeComponent();
+    }
+
+    public void SetContent(string title, string message)
+    {
+        TitleText.Text = title;
+        MessageText.Text = message;
+        ConfirmButton.Content = "Confirm";
+    }
+
+    public void SetContent(string title, string message, string confirmButtonText)
+    {
+        TitleText.Text = title;
+        MessageText.Text = message;
+        ConfirmButton.Content = confirmButtonText;
+    }
+
+    private void CancelButton_Click(object? sender, RoutedEventArgs e)
+    {
+        Confirmed = false;
+        Close();
+    }
+
+    private void ConfirmButton_Click(object? sender, RoutedEventArgs e)
+    {
+        Confirmed = true;
+        Close();
+    }
+}

src/KeyKeeper/Views/Converters/PasswordEntryConverter.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Globalization;
+using Avalonia.Data;
+using Avalonia.Data.Converters;
+using KeyKeeper.PasswordStore;
+
+namespace KeyKeeper.Views.Converters;
+
+public class PasswordEntryConverter : IValueConverter
+{
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        PassStoreEntry? entry = value as PassStoreEntry;
+        if (entry is PassStoreEntryLink link)
+        {
+            entry = link.LinkTarget;
+        }
+
+        if (entry == null)
+            return value;
+
+        if (parameter is string propertyPath && !string.IsNullOrEmpty(propertyPath))
+        {
+            try
+            {
+                object? current = entry;
+                foreach (var prop in propertyPath.Split('.'))
+                {
+                    if (current == null)
+                        return null;
+                    var propInfo = current.GetType().GetProperty(prop);
+                    current = propInfo?.GetValue(current);
+                }
+                return current;
+            }
+            catch
+            {
+                return value;
+            }
+        }
+
+        return entry;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        return BindingNotification.UnsetValue;
+    }
+}

src/KeyKeeper/Views/CreateGroupDialog.axaml

@@ -0,0 +1,61 @@
+<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 x:Name="TitleText"
+                   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="ActionButton"
+                    Content="Create"
+                    Width="80"
+                    IsEnabled="False"
+                    Click="ActionButton_Click"/>
+        </StackPanel>
+    </StackPanel>
+</Window>

src/KeyKeeper/Views/CreateGroupDialog.axaml.cs

@@ -0,0 +1,89 @@
+using System;
+using System.Collections.Generic;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using KeyKeeper.Models;
+using KeyKeeper.PasswordStore;
+
+namespace KeyKeeper.Views;
+
+public partial class CreateGroupDialog : Window
+{
+    public GroupEditData? GroupData { 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 += (_, _) => UpdateActionButtonState();
+        KeyDown += OnKeyDown;
+    }
+
+    public void SetupForEdit(PassStoreEntryGroup group)
+    {
+        TitleText.Text = "Edit group";
+        ActionButton.Content = "Save";
+        NameTextBox.Text = group.Name;
+
+        for (int i = 0; i < IconListBox.ItemCount; i++)
+        {
+            if (IconListBox.Items[i] is IconChoice choice && choice.Id == group.IconType)
+            {
+                IconListBox.SelectedIndex = i;
+                break;
+            }
+        }
+    }
+
+    private void UpdateActionButtonState()
+    {
+        ActionButton.IsEnabled = !string.IsNullOrWhiteSpace(NameTextBox.Text);
+    }
+
+    private void OnKeyDown(object? sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Escape)
+            Close();
+        else if (e.Key == Key.Enter && ActionButton.IsEnabled)
+            Submit();
+    }
+
+    private void ActionButton_Click(object? sender, RoutedEventArgs e) => Submit();
+
+    private void CancelButton_Click(object? sender, RoutedEventArgs e)
+    {
+        GroupData = null;
+        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;
+        }
+
+        var iconType = BuiltinEntryIconType.DEFAULT;
+        if (IconListBox.SelectedItem is IconChoice choice)
+            iconType = choice.Id;
+
+        GroupData = new GroupEditData(name, iconType);
+        Close();
+    }
+}

src/KeyKeeper/Views/RepositoryWindow.axaml

@@ -15,6 +15,7 @@
 
     <Window.Resources>
         <converters:TotpCodeConverter x:Key="TotpCodeConverter" />
+        <converters:PasswordEntryConverter x:Key="PasswordEntryConverter" />
         <converters:StringPresenceToOpacityConverter x:Key="StringPresenceToOpacityConverter" />
     </Window.Resources>
 
@@ -57,22 +58,32 @@
                             </StackPanel>
                         </Border>
 
-                                    <!-- Рамочка  -->
+                        <!-- Группы паролей  -->
-                        <!-- <Border BorderBrush="Gray"
+                        <TreeView x:Name="GroupTree"
-                                            BorderThickness="1"
+                                 ItemsSource="{Binding PasswordGroups}"
-                                            CornerRadius="5"
+                                 SelectedItem="{Binding SelectedPasswordGroup}"
-                                            Padding="20"
+                                 Background="#FFFFFFFF"
-                                            Background="#F5F5F5"
+                                 SelectionMode="Single"
-                                            HorizontalAlignment="Left">
+                                 ScrollViewer.HorizontalScrollBarVisibility="Disabled" >
+                            <TreeView.ItemTemplate>
+                                <TreeDataTemplate ItemsSource="{Binding ChildGroups}">
+                                    <Border Background="Transparent"
+                                            DoubleTapped="Entry_DoubleTapped">
+                                        <TextBlock Text="{Binding DisplayName}"
+                                                   Foreground="Black"
+                                                   TextTrimming="CharacterEllipsis"
+                                                   MaxWidth="180" />
+                                        <Border.ContextMenu>
+                                            <ContextMenu>
+                                                <MenuItem Name="groupCtxMenuEdit" Header="Edit" Click="GroupContextMenuItem_Click" />
+                                                <MenuItem Name="groupCtxMenuDelete" Header="Delete" Click="GroupContextMenuItem_Click" />
+                                            </ContextMenu>
+                                        </Border.ContextMenu>
+                                    </Border>
+                                </TreeDataTemplate>
+                            </TreeView.ItemTemplate>
+                        </TreeView>
 
-                        <StackPanel HorizontalAlignment="Left">
-                            <Button Content="All Passwords"
-                                                Width="120"
-                                                Height="30"
-                                                HorizontalAlignment="Left"/>
-                        </StackPanel>
-
-                        </Border> -->
                         <!-- Save Passwords -->
                         <Button Content="Save Passwords"
                                 Classes="accentSidebarButton"
@@ -96,6 +107,14 @@
                                         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>
 
@@ -122,11 +141,11 @@
                                             Margin="10"
                                             HorizontalAlignment="Center">
 
-                                    <Svg Path="{Binding IconPath}" Width="48" Height="48"/>
+                                    <Svg Path="{Binding ., Converter={StaticResource PasswordEntryConverter}, ConverterParameter=IconPath}" Width="48" Height="48"/>
-                                    <TextBlock Text="{Binding Name}"
+                                    <TextBlock Text="{Binding ., Converter={StaticResource PasswordEntryConverter}, ConverterParameter=Name}"
                                                HorizontalAlignment="Center"
                                                Foreground="Black" />
-                                    <TextBlock Text="{Binding Username.Value}"
+                                    <TextBlock Text="{Binding ., Converter={StaticResource PasswordEntryConverter}, ConverterParameter=Username.Value}"
                                                Foreground="#666"
                                                HorizontalAlignment="Center" />
 
@@ -138,17 +157,21 @@
                                                Margin="0,4,0,0">
                                         <TextBlock.Text>
                                             <MultiBinding Converter="{StaticResource TotpCodeConverter}">
-                                                <Binding />
+                                                <Binding Converter="{StaticResource PasswordEntryConverter}" />
                                                 <Binding Path="DataContext" RelativeSource="{RelativeSource AncestorType=ListBox}" />
                                             </MultiBinding>
                                         </TextBlock.Text>
                                     </TextBlock>
                                 </StackPanel>
                                 <Border.ContextMenu>
-                                    <ContextMenu>
+                                    <ContextMenu Opened="EntryContextMenu_Opening">
                                         <MenuItem Name="entryCtxMenuCopyUsername" Header="Copy username" Click="EntryContextMenuItem_Click"/>
                                         <MenuItem Name="entryCtxMenuCopyPassword" Header="Copy password" Click="EntryContextMenuItem_Click"/>
                                         <MenuItem Name="entryCtxMenuEdit" Header="Edit" Click="EntryContextMenuItem_Click"/>
+                                        <MenuItem Name="entryCtxMenuAddToGroup" Header="Add to group" />
+                                        <MenuItem Name="entryCtxMenuRemoveFromGroup" Header="Remove from this group" Click="EntryContextMenuItem_Click" />
+                                        <MenuItem Name="entryCtxMenuAddToFavourites" Header="Add to Favourites" Click="EntryContextMenuItem_Click" />
+                                        <MenuItem Name="entryCtxMenuRemoveFromFavourites" Header="Remove from Favourites" Click="EntryContextMenuItem_Click" />
                                         <MenuItem Name="entryCtxMenuDelete" Header="Delete" Click="EntryContextMenuItem_Click"/>
                                     </ContextMenu>
                                 </Border.ContextMenu>

src/KeyKeeper/Views/RepositoryWindow.axaml.cs

@@ -1,9 +1,12 @@
 using System;
+using System.Linq;
+using System.Threading.Tasks;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
 using Avalonia.Input;
 using KeyKeeper.PasswordStore;
+using KeyKeeper.Models;
 using KeyKeeper.ViewModels;
 using Avalonia.VisualTree;
 using Avalonia.Controls.Presenters;
@@ -14,6 +17,7 @@ public partial class RepositoryWindow : Window
 {
     private bool allowClose;
     private bool closeConfirmationShown;
+    private PassStoreEntry? _contextMenuEntry;
 
     public RepositoryWindow(RepositoryWindowViewModel model)
     {
@@ -118,6 +122,37 @@ public partial class RepositoryWindow : Window
         }
     }
 
+    private async void EditEntry(RepositoryWindowViewModel vm1, UnlockedRepositoryViewModel vm2, PassStoreEntry entry)
+    {
+        if (entry == null)
+        {
+            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("No entry selected");
+            return;
+        }
+
+        EntryEditWindow dialog = new();
+
+        PassStoreEntry realEntry = entry;
+        if (realEntry is PassStoreEntryLink lnk)
+            realEntry = lnk.LinkTarget!;
+
+        dialog.SetEntry((realEntry as PassStoreEntryPassword)!);
+
+        vm1.StopLockTimer();
+
+        await dialog.ShowDialog(this);
+
+        vm1.StartLockTimer();
+
+        if (dialog.EditedEntry != null)
+        {
+            if (entry is PassStoreEntryLink l)
+                l.LinkTarget = dialog.EditedEntry;
+            vm2.UpdateEntry(dialog.EditedEntry);
+            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Entry updated");
+        }
+    }
+
     private async void EditEntryButton_Click(object sender, RoutedEventArgs args)
     {
         if (DataContext is RepositoryWindowViewModel vm_ && vm_.CurrentPage is UnlockedRepositoryViewModel vm)
@@ -129,15 +164,17 @@ public partial class RepositoryWindow : Window
                 return;
             }
 
-            var selectedEntry = listBox.SelectedItem as PassStoreEntryPassword;
+            PassStoreEntry? entry = listBox.SelectedItem as PassStoreEntry;
-            if (selectedEntry == null)
+            if (entry == null) return;
-            {
+            EditEntry(vm_, vm, entry);
-                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("No entry selected");
+        }
-                return;
+    }
-            }
 
-            EntryEditWindow dialog = new();
+    private async void AddGroupButton_Click(object sender, RoutedEventArgs args)
-            dialog.SetEntry(selectedEntry);
+    {
+        if (DataContext is RepositoryWindowViewModel vm_ && vm_.CurrentPage is UnlockedRepositoryViewModel vm)
+        {
+            CreateGroupDialog dialog = new();
 
             vm_.StopLockTimer();
 
@@ -145,10 +182,18 @@ public partial class RepositoryWindow : Window
 
             vm_.StartLockTimer();
 
-            if (dialog.EditedEntry != null)
+            if (dialog.GroupData != null)
             {
-                vm.UpdateEntry(dialog.EditedEntry);
+                var group = new PassStoreEntryGroup(
-                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Entry updated");
+                    Guid.NewGuid(),
+                    DateTime.UtcNow,
+                    DateTime.UtcNow,
+                    dialog.GroupData.IconType,
+                    dialog.GroupData.Name,
+                    FileFormatConstants.GROUP_TYPE_SIMPLE
+                );
+                vm.AddGroup(group);
+                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Group created");
             }
         }
     }
@@ -163,10 +208,9 @@ public partial class RepositoryWindow : Window
 
     private void Entry_DoubleTapped(object sender, TappedEventArgs args)
     {
-        if (args.Source is StyledElement s && s.DataContext is PassStoreEntryPassword pwd)
+        if (args.Source is StyledElement s && s.DataContext is PassStoreEntry ent)
         {
-            Clipboard!.SetTextAsync(pwd.Password.Value);
+            CopyPassword(ent);
-            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Password copied to clipboard");
         }
     }
 
@@ -174,49 +218,248 @@ public partial class RepositoryWindow : Window
     {
         if (args.Key == Key.C && args.KeyModifiers == KeyModifiers.Control)
         {
-            if (sender is ListBox list && list.SelectedItem is PassStoreEntryPassword pwd)
+            if (sender is ListBox list && list.SelectedItem is PassStoreEntry ent)
             {
-                Clipboard!.SetTextAsync(pwd.Password.Value);
+                CopyPassword(ent);
-                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Password copied to clipboard");
+            }
+        }
+    }
+
+    private void CopyPassword(PassStoreEntry ent)
+    {
+        PassStoreEntryPassword? pwd = null;
+        if (ent is PassStoreEntryPassword p) pwd = p;
+        else if (ent is PassStoreEntryLink lnk && lnk.LinkTarget is PassStoreEntryPassword p1) pwd = p1;
+        if (pwd == null) return;
+
+        Clipboard!.SetTextAsync(pwd.Password.Value);
+        this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Password copied to clipboard");
+    }
+
+    private void EntryContextMenu_Opening(object? sender, RoutedEventArgs args)
+    {
+        if (sender is not ContextMenu contextMenu || DataContext is not RepositoryWindowViewModel vm ||
+            vm.CurrentPage is not UnlockedRepositoryViewModel pageVm)
+            return;
+
+        _contextMenuEntry = null;
+
+        if (contextMenu.Parent?.Parent is Border border && border.DataContext is PassStoreEntry entry)
+        {
+            _contextMenuEntry = entry;
+        }
+
+        var addToGroupItem = contextMenu.Items
+            .OfType<MenuItem>()
+            .FirstOrDefault(m => m.Name == "entryCtxMenuAddToGroup");
+
+        var removeFromGroupItem = contextMenu.Items
+            .OfType<MenuItem>()
+            .FirstOrDefault(m => m.Name == "entryCtxMenuRemoveFromGroup");
+
+        var addToFavouritesItem = contextMenu.Items
+            .OfType<MenuItem>()
+            .FirstOrDefault(m => m.Name == "entryCtxMenuAddToFavourites");
+
+        var removeFromFavouritesItem = contextMenu.Items
+            .OfType<MenuItem>()
+            .FirstOrDefault(m => m.Name == "entryCtxMenuRemoveFromFavourites");
+
+        var isNonDefaultGroup = pageVm.SelectedPasswordGroup.GroupType != FileFormatConstants.GROUP_TYPE_DEFAULT;
+        if (removeFromGroupItem != null)
+        {
+            removeFromGroupItem.IsVisible = isNonDefaultGroup;
+        }
+
+        // Check if entry is in Favourites group
+        var favouritesGroup = pageVm.PasswordGroups.FirstOrDefault(g => g.GroupType == FileFormatConstants.GROUP_TYPE_FAVOURITES);
+        var isInFavourites = false;
+        if (favouritesGroup != null && _contextMenuEntry != null)
+        {
+            PassStoreEntryPassword? pwd = UnlockedRepositoryViewModel.FollowLinkIfNeeded(_contextMenuEntry);
+            if (pwd != null)
+            {
+                isInFavourites = pwd.Backlinks.Any(bl => bl is PassStoreEntryLink lnk && lnk.Parent == favouritesGroup);
+            }
+        }
+
+        if (addToFavouritesItem != null)
+            addToFavouritesItem.IsVisible = !isInFavourites;
+        if (removeFromFavouritesItem != null)
+            removeFromFavouritesItem.IsVisible = isInFavourites;
+
+        if (addToGroupItem == null)
+            return;
+
+        addToGroupItem.Items.Clear();
+
+        var nonDefaultGroups = pageVm.PasswordGroups
+            .Where(g => g.GroupType != FileFormatConstants.GROUP_TYPE_DEFAULT)
+            .ToList();
+
+        EventHandler<RoutedEventArgs> onSubmenuClick = (sender, args) => AddToGroup_Click(sender, args, _contextMenuEntry!);
+        foreach (var group in nonDefaultGroups)
+        {
+            var menuItem = new MenuItem
+            {
+                Header = group.DisplayName,
+                Tag = group
+            };
+            menuItem.Click += onSubmenuClick;
+            addToGroupItem.Items.Add(menuItem);
+        }
+    }
+
+    private void AddToGroup_Click(object? sender, RoutedEventArgs args, PassStoreEntry entry)
+    {
+        if (sender is not MenuItem item || item.Tag is not PassStoreEntryGroup targetGroup)
+            return;
+
+        if (entry == null)
+            return;
+
+        if (DataContext is not RepositoryWindowViewModel vm ||
+            vm.CurrentPage is not UnlockedRepositoryViewModel pageVm)
+            return;
+
+        var notificationHost = this.FindControlRecursive<ToastNotificationHost>("NotificationHost");
+
+        if (pageVm.AddEntryToGroup(entry, targetGroup))
+            notificationHost?.Show($"Added to {targetGroup.DisplayName}");
+        else
+            notificationHost?.Show($"This entry is already in {targetGroup.DisplayName}!");
+        _contextMenuEntry = null;
+    }
+
+    private async void GroupContextMenuItem_Click(object sender, RoutedEventArgs args)
+    {
+        if (args.Source is not StyledElement s || s.DataContext is not PassStoreEntryGroup group)
+            return;
+
+        if (DataContext is not RepositoryWindowViewModel vm ||
+            vm.CurrentPage is not UnlockedRepositoryViewModel pageVm)
+            return;
+
+        if (group.GroupType == FileFormatConstants.GROUP_TYPE_DEFAULT ||
+            group.GroupType == FileFormatConstants.GROUP_TYPE_FAVOURITES ||
+            group.GroupType == FileFormatConstants.GROUP_TYPE_ROOT)
+            return;
+
+        if (s.Name == "groupCtxMenuEdit")
+        {
+            await EditGroup(vm, pageVm, group);
+        }
+        else if (s.Name == "groupCtxMenuDelete")
+        {
+            await DeleteGroup(group);
+        }
+    }
+
+    private async Task EditGroup(RepositoryWindowViewModel vm, UnlockedRepositoryViewModel pageVm, PassStoreEntryGroup group)
+    {
+        CreateGroupDialog dialog = new();
+        dialog.SetupForEdit(group);
+
+        vm.StopLockTimer();
+
+        await dialog.ShowDialog(this);
+
+        vm.StartLockTimer();
+
+        if (dialog.GroupData != null)
+        {
+            pageVm.UpdateGroup(group, dialog.GroupData.Name, dialog.GroupData.IconType);
+            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Group updated");
+        }
+    }
+
+    private async Task DeleteGroup(PassStoreEntryGroup group)
+    {
+        ConfirmationDialog confirmDialog = new();
+        confirmDialog.SetContent(
+            "Delete Group",
+            $"Are you sure you want to delete the group '{group.DisplayName}'? This action cannot be undone.",
+            "Delete"
+        );
+
+        if (DataContext is not RepositoryWindowViewModel vm)
+            return;
+
+        vm.StopLockTimer();
+
+        await confirmDialog.ShowDialog(this);
+
+        vm.StartLockTimer();
+
+        if (confirmDialog.Confirmed)
+        {
+            if (vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
+            {
+                pageVm.DeleteGroup(group);
+                this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Group deleted");
             }
         }
     }
 
     private async void EntryContextMenuItem_Click(object sender, RoutedEventArgs args)
     {
-        if (args.Source is StyledElement s && s.DataContext is PassStoreEntryPassword pwd)
+        if (args.Source is StyledElement s && s.DataContext is PassStoreEntry ent)
         {
+            PassStoreEntryPassword? pwd = UnlockedRepositoryViewModel.FollowLinkIfNeeded(ent);
+            if (pwd == null) return;
+
             if (s.Name == "entryCtxMenuCopyUsername")
             {
-                Clipboard!.SetTextAsync(pwd.Username.Value);
+                await Clipboard!.SetTextAsync(pwd.Username.Value);
                 this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Username copied to clipboard");
             }
             else if (s.Name == "entryCtxMenuCopyPassword")
             {
-                Clipboard!.SetTextAsync(pwd.Password.Value);
+                await Clipboard!.SetTextAsync(pwd.Password.Value);
                 this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Password copied to clipboard");
             }
             else if (s.Name == "entryCtxMenuEdit")
             {
                 if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
                 {
-                    EntryEditWindow dialog = new();
+                    EditEntry(vm, pageVm, ent);
-                    dialog.SetEntry(pwd);
+                }
-                    vm.StopLockTimer();
+            }
-                    await dialog.ShowDialog(this);
+            else if (s.Name == "entryCtxMenuRemoveFromGroup")
-                    vm.StartLockTimer();
+            {
-                    if (dialog.EditedEntry != null)
+                if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
+                {
+                    pageVm.RemoveEntryFromGroup(ent);
+                    this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Removed from group");
+                }
+            }
+            else if (s.Name == "entryCtxMenuAddToFavourites")
+            {
+                if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
+                {
+                    var favouritesGroup = pageVm.PasswordGroups.FirstOrDefault(g => g.GroupType == FileFormatConstants.GROUP_TYPE_FAVOURITES);
+                    if (favouritesGroup != null)
                     {
-                        pageVm.UpdateEntry(dialog.EditedEntry);
+                        if (pageVm.AddEntryToGroup(ent, favouritesGroup))
-                        this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Entry updated");
+                            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Added to Favourites");
+                        else
+                            this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Already in Favourites");
                     }
                 }
             }
+            else if (s.Name == "entryCtxMenuRemoveFromFavourites")
+            {
+                if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
+                {
+                    pageVm.RemoveEntryFromFavourites(ent);
+                    this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Removed from Favourites");
+                }
+            }
             else if (s.Name == "entryCtxMenuDelete")
             {
                 if (DataContext is RepositoryWindowViewModel vm && vm.CurrentPage is UnlockedRepositoryViewModel pageVm)
                 {
-                    pageVm.DeleteEntry(pwd.Id);
+                    pageVm.DeleteEntry(ent.Id);
                     this.FindControlRecursive<ToastNotificationHost>("NotificationHost")?.Show("Entry deleted");
                 }
             }