Add option to remove server and disable input TextBox on channels of disconnected servers

src/Decho/Services/ConnectionService.cs

@@ -137,16 +137,45 @@ public sealed class ConnectionService : IDisposable
 
         entry.Server.IsConnected = false;
         entry.Server.IsConnecting = false;
-        ServerStateChanged?.Invoke(entry.Server);
 
         await entry.Manager.CleanupAsync();
         entry.ApiClient.Dispose();
         await entry.Manager.DisposeAsync();
 
         _ = _connections.Remove(serverUrl);
+        ServerStateChanged?.Invoke(entry.Server);
+    }
+
+    public async Task RemoveServerAsync(string serverUrl)
+    {
+        if (_connections.TryGetValue(serverUrl, out ServerConnection? entry))
+        {
+            entry.Server.IsConnected = false;
+            entry.Server.IsConnecting = false;
+
+            await entry.Manager.CleanupAsync();
+            entry.ApiClient.Dispose();
+            await entry.Manager.DisposeAsync();
+
+            _ = _connections.Remove(serverUrl);
+        }
+
+        RemoveServerFromConfig(serverUrl);
         ServerRemoved?.Invoke(serverUrl);
     }
 
+    private static void RemoveServerFromConfig(string serverUrl)
+    {
+        ClientConfig config = ConfigManager.Load();
+        SavedServer? saved = config.SavedServers.FirstOrDefault(s =>
+            string.Equals(s.Url, serverUrl, StringComparison.OrdinalIgnoreCase));
+        if (saved is not null)
+        {
+            _ = config.SavedServers.Remove(saved);
+            ConfigManager.Save(config);
+        }
+    }
+
     public async Task SendMessageAsync(string serverUrl, string channelName, string content)
     {
         if (!_connections.TryGetValue(serverUrl, out ServerConnection? entry))

src/Decho/ViewModels/ChatViewModel.cs

@@ -1,5 +1,3 @@
-using EchoHub.Client.Commands;
-
 using System.Collections.ObjectModel;
 
 namespace Decho.ViewModels;
@@ -45,7 +43,7 @@ public sealed class ChatViewModel : ViewModelBase
         Composer = new MessageComposerViewModel();
     }
 
-    public void SetChannel(ChannelViewModel? channel, string serverUrl = "")
+    public void SetChannel(ChannelViewModel? channel, string serverUrl = "", bool isServerConnected = true)
     {
         if (channel is null)
         {
@@ -55,7 +53,7 @@ public sealed class ChatViewModel : ViewModelBase
             HasTopic = false;
             CurrentChannelName = string.Empty;
             CurrentServerUrl = string.Empty;
-            Composer.SetServer(string.Empty);
+            Composer.SetServer(string.Empty, isServerConnected);
             return;
         }
 
@@ -65,12 +63,7 @@ public sealed class ChatViewModel : ViewModelBase
         HasTopic = channel.HasTopic;
         CurrentChannelName = channel.Name;
         CurrentServerUrl = serverUrl;
-        Composer.SetServer(serverUrl);
+        Composer.SetServer(serverUrl, isServerConnected);
-    }
-
-    public void SetComposerCommandHandler(CommandHandler handler)
-    {
-        Composer.SetCommandHandler(handler);
     }
 
     public void ClearMessages()

src/Decho/ViewModels/MainWindowViewModel.cs

@@ -79,6 +79,7 @@ public sealed class MainWindowViewModel : ViewModelBase
         ServerViewModel serverVm = new ServerViewModel(placeholderServer);
         serverVm.ConnectRequested += async () => await HandleServerConnectRequested(serverVm);
         serverVm.DisconnectRequested += async () => await HandleServerDisconnectRequested(serverVm);
+        serverVm.RemoveRequested += async () => await HandleServerRemoveRequested(serverVm);
 
         Sidebar.Servers.Add(serverVm);
         StatusText = "Click Connect on the server to get started";
@@ -352,6 +353,7 @@ public sealed class MainWindowViewModel : ViewModelBase
             ServerViewModel serverVm = new ServerViewModel(server);
             serverVm.ConnectRequested += () => HandleServerConnectRequested(serverVm);
             serverVm.DisconnectRequested += () => HandleServerDisconnectRequested(serverVm);
+            serverVm.RemoveRequested += () => HandleServerRemoveRequested(serverVm);
             _ = serverVm.WhenAnyValue(s => s.SelectedChannel)
                 .Where(channel => channel is not null)
                 .Subscribe(channel => Sidebar.SelectedChannel = channel!);
@@ -365,6 +367,11 @@ public sealed class MainWindowViewModel : ViewModelBase
                 }
 
                 Sidebar.Servers.Add(serverVm);
+                if (serverVm.Channels.Count > 0)
+                {
+                    serverVm.SelectedChannel = serverVm.Channels[0];
+                }
+
                 StatusText = $"Connected to {server.Name}";
             });
         };
@@ -390,6 +397,11 @@ public sealed class MainWindowViewModel : ViewModelBase
                 if (serverVm is not null)
                 {
                     serverVm.SyncFromModel();
+                    if (string.Equals(server.ServerUrl, Chat.CurrentServerUrl, StringComparison.OrdinalIgnoreCase))
+                    {
+                        Chat.Composer.IsConnected = server.IsConnected;
+                    }
+
                     if (!server.IsConnected)
                     {
                         StatusText = $"Disconnected from {server.Name}";
@@ -493,11 +505,12 @@ public sealed class MainWindowViewModel : ViewModelBase
         }
 
         string serverUrl = FindServerUrlForChannel(channel);
-        Chat.SetChannel(channel, serverUrl);
+        bool isServerConnected = Sidebar.GetServer(serverUrl)?.IsConnected ?? false;
+        Chat.SetChannel(channel, serverUrl, isServerConnected);
 
         if (!string.IsNullOrEmpty(serverUrl))
         {
-            Chat.SetComposerCommandHandler(new CommandHandler());
+            Chat.Composer.SetCommandHandler(new CommandHandler());
 
             _ = Task.Run(async () =>
             {
@@ -538,6 +551,7 @@ public sealed class MainWindowViewModel : ViewModelBase
             ServerViewModel serverVm = new ServerViewModel(placeholderServer);
             serverVm.ConnectRequested += async () => await HandleServerConnectRequested(serverVm);
             serverVm.DisconnectRequested += async () => await HandleServerDisconnectRequested(serverVm);
+            serverVm.RemoveRequested += async () => await HandleServerRemoveRequested(serverVm);
 
             Avalonia.Threading.Dispatcher.UIThread.Post(() =>
             {
@@ -642,6 +656,18 @@ public sealed class MainWindowViewModel : ViewModelBase
         }
     }
 
+    private async Task HandleServerRemoveRequested(ServerViewModel serverVm)
+    {
+        try
+        {
+            await ConnectionService.RemoveServerAsync(serverVm.ServerUrl);
+        }
+        catch (Exception ex)
+        {
+            StatusText = $"Remove error: {ex.Message}";
+        }
+    }
+
     private void EnsureChannelInList(string serverUrl, string channelName)
     {
         ServerViewModel? serverVm = Sidebar.GetServer(serverUrl);

src/Decho/ViewModels/MessageComposerViewModel.cs

@@ -22,6 +22,12 @@ public sealed class MessageComposerViewModel : ViewModelBase
 
     public string ServerUrl { get; private set; } = string.Empty;
 
+    public bool IsConnected
+    {
+        get;
+        set => this.RaiseAndSetIfChanged(ref field, value);
+    } = true;
+
     public ReactiveCommand<Unit, Unit> SendCommand { get; }
 
     public bool HasCommandHandler => _commandHandler is not null;
@@ -40,9 +46,10 @@ public sealed class MessageComposerViewModel : ViewModelBase
         }
     }
 
-    public void SetServer(string serverUrl)
+    public void SetServer(string serverUrl, bool isConnected = true)
     {
         ServerUrl = serverUrl;
+        IsConnected = isConnected;
     }
 
     public void SetCommandHandler(CommandHandler handler)

src/Decho/ViewModels/ServerViewModel.cs

@@ -19,6 +19,12 @@ public sealed class ServerViewModel : ViewModelBase
         remove => _disconnectRequested = (Func<Task>?)Delegate.Remove(_disconnectRequested, value);
     }
 
+    public event Func<Task>? RemoveRequested
+    {
+        add => _removeRequested = (Func<Task>?)Delegate.Combine(_removeRequested, value);
+        remove => _removeRequested = (Func<Task>?)Delegate.Remove(_removeRequested, value);
+    }
+
     private bool _isConnected;
     private bool _isConnecting;
     private string? _connectedUser;
@@ -27,6 +33,8 @@ public sealed class ServerViewModel : ViewModelBase
 
     private Func<Task>? _disconnectRequested;
 
+    private Func<Task>? _removeRequested;
+
     public ServerModel Model { get; }
 
     public string Name => Model.Name;
@@ -39,6 +47,8 @@ public sealed class ServerViewModel : ViewModelBase
 
     public ReactiveCommand<Unit, Unit> DisconnectCommand { get; }
 
+    public ReactiveCommand<Unit, Unit> RemoveCommand { get; }
+
     public ChannelViewModel? SelectedChannel
     {
         get;
@@ -124,6 +134,7 @@ public sealed class ServerViewModel : ViewModelBase
 
         ConnectCommand = ReactiveCommand.CreateFromTask(ConnectAsync);
         DisconnectCommand = ReactiveCommand.CreateFromTask(DisconnectAsync);
+        RemoveCommand = ReactiveCommand.CreateFromTask(RemoveAsync);
     }
 
     public void SyncFromModel()
@@ -149,4 +160,12 @@ public sealed class ServerViewModel : ViewModelBase
             await _disconnectRequested();
         }
     }
+
+    private async Task RemoveAsync()
+    {
+        if (_removeRequested is not null)
+        {
+            await _removeRequested();
+        }
+    }
 }

src/Decho/Views/MessageComposerView.axaml

@@ -8,7 +8,8 @@
         <TextBox Grid.Column="0"
                  HorizontalAlignment="Stretch"
                  Margin="0 0 5 0"
-                 Text="{Binding Draft, Mode=TwoWay}">
+                 Text="{Binding Draft, Mode=TwoWay}"
+                 IsEnabled="{Binding IsConnected}">
             <TextBox.KeyBindings>
                 <KeyBinding Command="{Binding SendCommand}" Gesture="Enter" />
             </TextBox.KeyBindings>
@@ -19,11 +20,13 @@
                 Margin="0 0 5 0"
                 Content="Send"
                 i:Attached.Icon="fa-paper-plane"
-                Command="{Binding SendCommand}" />
+                Command="{Binding SendCommand}"
+                IsEnabled="{Binding IsConnected}" />
         <Button Grid.Column="2"
                 Height="33"
                 Width="33"
                 Click="OnFileUploadClicked"
-                i:Attached.Icon="fa-paperclip" />
+                i:Attached.Icon="fa-paperclip"
+                IsEnabled="{Binding IsConnected}" />
     </Grid>
 </UserControl>

src/Decho/Views/SidebarView.axaml

@@ -2,6 +2,7 @@
 			 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 			 xmlns:vm="using:Decho.ViewModels"
 			 xmlns:views="using:Decho.Views"
+			 xmlns:i="https://github.com/projektanker/icons.avalonia"
 			 x:Class="Decho.Views.SidebarView"
 			 x:DataType="vm:SidebarViewModel">
 	<Border Background="{DynamicResource UiTheme00}" Width="250" CornerRadius="0 6 0 0">
@@ -14,6 +15,7 @@
 								  HorizontalAlignment="Stretch"
 								  IsExpanded="{Binding IsExpanded}">
 							<Expander.Header>
+								<Grid ColumnDefinitions="*, Auto">
 									<StackPanel Spacing="5">
 										<StackPanel Orientation="Horizontal" Spacing="5">
 											<Ellipse Width="8" Height="8"
@@ -30,6 +32,23 @@
 												   Opacity="0.6"
 												   VerticalAlignment="Center" />
 									</StackPanel>
+									<Button Grid.Column="1"
+											x:Name="SettingsButton"
+											Background="Transparent"
+											Foreground="{DynamicResource UiTheme08}"
+											VerticalAlignment="Center"
+											i:Attached.Icon="fa-cog"
+											Click="OnSettingsClicked">
+										<Button.ContextMenu>
+											<ContextMenu>
+												<MenuItem Header="Disconnect"
+														  Command="{Binding DisconnectCommand}" />
+												<MenuItem Header="Remove Server"
+														  Command="{Binding RemoveCommand}" />
+											</ContextMenu>
+										</Button.ContextMenu>
+									</Button>
+								</Grid>
 							</Expander.Header>
 							<StackPanel>
 								<Button Content="Connect"
@@ -38,12 +57,6 @@
 										Margin="4"
 										Padding="5 2"
 										HorizontalAlignment="Stretch" />
-								<Button Content="Disconnect"
-										Command="{Binding DisconnectCommand}"
-										IsVisible="{Binding IsConnected}"
-										Margin="4"
-										Padding="5 2"
-										HorizontalAlignment="Stretch" />
 								<views:ChannelListView />
 							</StackPanel>
 						</Expander>

src/Decho/Views/SidebarView.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Interactivity;
 
 using Decho.ViewModels;
 
@@ -22,4 +23,12 @@ public partial class SidebarView : UserControl
     {
         InitializeComponent();
     }
+
+    private void OnSettingsClicked(object? sender, RoutedEventArgs e)
+    {
+        if (sender is Button button)
+        {
+            button.ContextMenu?.Open(button);
+        }
+    }
 }