Multi Client Support - Needs Update Post Socket to support Multiple "Clients" not in a single Bus.

RelayClient/App.xaml.cs

@@ -1,9 +1,9 @@
-using Microsoft.Extensions.DependencyInjection;
-
-namespace RelayClient;
+namespace RelayClient;
 
 public partial class App : Application
 {
+    private bool _openedSecondWindow;
+
     public App()
     {
         InitializeComponent();
@@ -11,6 +11,28 @@ public partial class App : Application
 
     protected override Window CreateWindow(IActivationState? activationState)
     {
-        return new Window(new AppShell());
+        var keeperWindow = new Window(new MainPage("Keeper317"))
+        {
+            Title = "Relay Client - Keeper317"
+        };
+
+        keeperWindow.Created += KeeperWindow_Created;
+
+        return keeperWindow;
+    }
+
+    private void KeeperWindow_Created(object? sender, EventArgs e)
+    {
+        if (_openedSecondWindow)
+            return;
+
+        _openedSecondWindow = false;
+
+        var kiraWindow = new Window(new MainPage("Ru_Kira"))
+        {
+            Title = "Relay Client - Ru_Kira"
+        };
+
+        Current?.OpenWindow(kiraWindow);
     }
 }

RelayClient/ChatSimulator.cs

@@ -0,0 +1,25 @@
+namespace RelayClient;
+
+public static class ChatSimulator
+{
+    public static event Action<ChatMessage>? MessageSent;
+
+    public static void Send(string senderUsername, string text)
+    {
+        var message = new ChatMessage
+        {
+            SenderUsername = senderUsername,
+            Text = text,
+            Timestamp = DateTime.Now
+        };
+
+        MessageSent?.Invoke(message);
+    }
+}
+
+public sealed class ChatMessage
+{
+    public required string SenderUsername { get; set; }
+    public required string Text { get; set; }
+    public required DateTime Timestamp { get; set; }
+}

RelayClient/MainPage.xaml

@@ -1,36 +1,40 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="RelayClient.MainPage">
+<ContentPage
+    x:Class="RelayClient.MainPage"
+    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    Title="Relay Client">
 
-    <ScrollView>
-        <VerticalStackLayout
-            Padding="30,0"
-            Spacing="25">
-            <Image
-                Source="dotnet_bot.png"
-                HeightRequest="185"
-                Aspect="AspectFit"
-                SemanticProperties.Description="dot net bot in a submarine number ten" />
+    <Grid RowDefinitions="Auto,*,Auto" Padding="12" RowSpacing="10">
 
-            <Label
-                Text="Hello, World!"
-                Style="{StaticResource Headline}"
-                SemanticProperties.HeadingLevel="Level1" />
+        <Border Grid.Row="0" StrokeThickness="1" Padding="10">
+            <VerticalStackLayout Spacing="4">
+                <Label x:Name="UserLabel"
+                       Text="Logged in as: Unknown"
+                       FontAttributes="Bold"
+                       FontSize="18" />
+                <Label Text="#general"
+                       FontSize="14" />
+            </VerticalStackLayout>
+        </Border>
 
-            <Label
-                Text="Welcome to &#10;.NET Multi-platform App UI"
-                Style="{StaticResource SubHeadline}"
-                SemanticProperties.HeadingLevel="Level2"
-                SemanticProperties.Description="Welcome to dot net Multi platform App U I" />
+        <Border Grid.Row="1" StrokeThickness="1" Padding="10">
+            <ScrollView x:Name="MessagesScrollView">
+                <VerticalStackLayout x:Name="MessagesLayout" Spacing="8" />
+            </ScrollView>
+        </Border>
 
-            <Button
-                x:Name="CounterBtn"
-                Text="Click me" 
-                SemanticProperties.Hint="Counts the number of times you click"
-                Clicked="OnCounterClicked"
-                HorizontalOptions="Fill" />
-        </VerticalStackLayout>
-    </ScrollView>
+        <Grid Grid.Row="2" ColumnDefinitions="*,Auto" ColumnSpacing="10">
+            <Entry x:Name="MessageEntry"
+                   Grid.Column="0"
+                   Placeholder="Type a message..."
+                   ReturnType="Send"
+                   Completed="MessageEntry_OnCompleted" />
 
+            <Button Grid.Column="1"
+                    Text="Send"
+                    Clicked="SendButton_OnClicked" />
+        </Grid>
+
+    </Grid>
 </ContentPage>

RelayClient/MainPage.xaml.cs

@@ -2,22 +2,92 @@
 
 public partial class MainPage : ContentPage
 {
-    int count = 0;
+    private readonly string _username;
 
-    public MainPage()
+    public MainPage(string username)
     {
         InitializeComponent();
+
+        _username = username;
+        UserLabel.Text = $"Logged in as: {_username}";
+
+        ChatSimulator.MessageSent += OnMessageSent;
     }
 
-    private void OnCounterClicked(object? sender, EventArgs e)
+    private void SendButton_OnClicked(object? sender, EventArgs e)
     {
-        count++;
+        SendMessage();
+    }
 
-        if (count == 1)
-            CounterBtn.Text = $"Clicked {count} time";
-        else
-            CounterBtn.Text = $"Clicked {count} times";
+    private void MessageEntry_OnCompleted(object? sender, EventArgs e)
+    {
+        SendMessage();
+    }
 
-        SemanticScreenReader.Announce(CounterBtn.Text);
+    private void SendMessage()
+    {
+        var text = MessageEntry.Text?.Trim();
+
+        if (string.IsNullOrWhiteSpace(text))
+            return;
+
+        ChatSimulator.Send(_username, text);
+
+        Console.WriteLine($"[{_username}] sent message: {text}");
+
+        MessageEntry.Text = string.Empty;
+        MessageEntry.Focus();
+    }
+
+    private void OnMessageSent(ChatMessage message)
+    {
+        MainThread.BeginInvokeOnMainThread(async () =>
+        {
+            bool isOwnMessage = message.SenderUsername == _username;
+
+            var bubble = new Border
+            {
+                StrokeThickness = 1,
+                Padding = 10,
+                Margin = isOwnMessage
+                    ? new Thickness(40, 0, 0, 0)
+                    : new Thickness(0, 0, 40, 0),
+                HorizontalOptions = isOwnMessage
+                    ? LayoutOptions.End
+                    : LayoutOptions.Start,
+                Content = new VerticalStackLayout
+                {
+                    Spacing = 2,
+                    Children =
+                    {
+                        new Label
+                        {
+                            Text = message.SenderUsername,
+                            FontAttributes = FontAttributes.Bold,
+                            FontSize = 12
+                        },
+                        new Label
+                        {
+                            Text = message.Text,
+                            FontSize = 14
+                        },
+                        new Label
+                        {
+                            Text = message.Timestamp.ToString("h:mm tt"),
+                            FontSize = 10
+                        }
+                    }
+                }
+            };
+
+            MessagesLayout.Children.Add(bubble);
+            await MessagesScrollView.ScrollToAsync(MessagesLayout, ScrollToPosition.End, true);
+        });
+    }
+
+    protected override void OnDisappearing()
+    {
+        ChatSimulator.MessageSent -= OnMessageSent;
+        base.OnDisappearing();
     }
 }