Добавил класс для представления сообщения

AMessanger/ViewModels/MainViewModel.cs

@@ -1,17 +1,17 @@
-using System.Collections.ObjectModel;
+using AMessanger.Models;
 using AMessanger.Services;
-using CommunityToolkit.Mvvm.ComponentModel;
 using Avalonia.Threading;
-using System.Windows.Input;
+using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
-using System.Diagnostics;
+using System.Collections.ObjectModel;
+using System.Windows.Input;
 
 namespace AMessanger.ViewModels;
 
 public partial class MainViewModel : ViewModelBase
 {
     [ObservableProperty]
-    public partial ObservableCollection<string> Messages { get; private set; } = new();
+    public partial ObservableCollection<Message> Messages { get; private set; } = new();
 
     [ObservableProperty]
     public partial string Message { get; set; } = string.Empty;
@@ -31,10 +31,9 @@ public partial class MainViewModel : ViewModelBase
         SendButtonCommand = new RelayCommand(SendMessage);
     }
 
-    private void OnMessageRecived(string user, string message)
+    private void OnMessageRecived(Message message)
     {
-        Dispatcher.UIThread.Post(() => Messages.Add($"{user}: {message}"));
-        Debug.WriteLine($"{user}: {message}");
+        Dispatcher.UIThread.Post(() => Messages.Add(message));
     }
 
     private void SendMessage()
@@ -42,7 +41,7 @@ public partial class MainViewModel : ViewModelBase
         if (string.IsNullOrWhiteSpace(Message))
             return;
 
-        _chat.SendMessageAsync(UserName, Message.Trim());
+        _chat.SendMessageAsync(new Message(UserName, Message.Trim()));
         Message = string.Empty;
     }
 }