Make dialogs for connection errors more friendly

Bloxstrap/App.xaml.cs

@@ -165,16 +165,13 @@ namespace Bloxstrap
                     if (ex.GetType() == typeof(AggregateException))
                         ex = ex.InnerException!;
 
-                    Controls.ShowMessageBox(
-                        "Bloxstrap is unable to connect to the internet. Please check your network configuration and try again.\n" +
-                        "\n" +
-                        "More information:\n" +
-                        ex.Message,
-                        MessageBoxImage.Error,
-                        MessageBoxButton.OK
+                    Controls.ShowConnectivityDialog(
+                        "the internet",
+                        $"Something may be preventing {ProjectName} from connecting to the internet, or you are currently offline. Please check and try again.",
+                        ex
                     );
 
-                    Terminate();
+                    Terminate(ErrorCode.ERROR_CANCELLED);
                 }
             }
             

Bloxstrap/Bootstrapper.cs

@@ -4,7 +4,6 @@ using System.Windows.Forms;
 using Microsoft.Win32;
 
 using Bloxstrap.Integrations;
-using System;
 
 namespace Bloxstrap
 {
@@ -190,7 +189,24 @@ namespace Bloxstrap
         {
             SetStatus("Connecting to Roblox...");
 
-            ClientVersion clientVersion = await RobloxDeployment.GetInfo(App.Settings.Prop.Channel);
+            ClientVersion clientVersion;
+
+            try
+            {
+                clientVersion = await RobloxDeployment.GetInfo(App.Settings.Prop.Channel);
+            }
+            catch (Exception ex)
+            {
+                string message = "It's possible that Roblox is being blocked by a firewall. Please check and try again.";
+
+                if (ex.GetType() == typeof(HttpResponseException))
+                    message = "Roblox may be down right now. See status.roblox.com for more information. Please try again later.";
+
+                Controls.ShowConnectivityDialog("Roblox", message, ex);
+
+                App.Terminate(ErrorCode.ERROR_CANCELLED);
+                return;
+            }
 
             if (clientVersion.IsBehindDefaultChannel)
             {

Bloxstrap/GlobalUsings.cs

@@ -15,6 +15,7 @@ global using System.Threading;
 global using System.Threading.Tasks;
 
 global using Bloxstrap.Enums;
+global using Bloxstrap.Exceptions;
 global using Bloxstrap.Extensions;
 global using Bloxstrap.Models;
 global using Bloxstrap.Models.BloxstrapRPC;

Bloxstrap/RobloxDeployment.cs

@@ -1,6 +1,4 @@
-using Bloxstrap.Exceptions;
-
-namespace Bloxstrap
+namespace Bloxstrap
 {
     public static class RobloxDeployment
     {

Bloxstrap/UI/Controls.cs

@@ -39,6 +39,14 @@ namespace Bloxstrap.UI
             });
         }
 
+        public static void ShowConnectivityDialog(string targetName, string description, Exception exception)
+        {
+            Application.Current.Dispatcher.Invoke(() =>
+            {
+                new ConnectivityDialog(targetName, description, exception).ShowDialog();
+            });
+        }
+
         public static IBootstrapperDialog GetBootstrapperDialog(BootstrapperStyle style)
         {
             return style switch

Bloxstrap/UI/Elements/Dialogs/ConnectivityDialog.xaml

@@ -0,0 +1,44 @@
+<ui:UiWindow x:Class="Bloxstrap.UI.Elements.Dialogs.ConnectivityDialog"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:ui="http://schemas.lepo.co/wpfui/2022/xaml"
+        xmlns:local="clr-namespace:Bloxstrap.UI.Elements.Dialogs"
+        mc:Ignorable="d"
+        Width="480"
+        MinHeight="0"
+        SizeToContent="Height"
+        Background="{ui:ThemeResource ApplicationBackgroundBrush}"
+        ExtendsContentIntoTitleBar="True"
+        WindowStartupLocation="CenterScreen">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <ui:TitleBar Grid.Row="0" Grid.ColumnSpan="2" Padding="8" x:Name="RootTitleBar" ShowMinimize="False" ShowMaximize="False" CanMaximize="False" KeyboardNavigation.TabNavigation="None" Title="Connectivity error" />
+
+        <Grid Grid.Row="1" Margin="16">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition Width="*" />
+            </Grid.ColumnDefinitions>
+            <Image Grid.Column="0" Width="32" Height="32" Margin="0,0,15,0" VerticalAlignment="Top" RenderOptions.BitmapScalingMode="HighQuality" Source="pack://application:,,,/Resources/MessageBox/Error.png" />
+            <StackPanel Grid.Column="1">
+                <TextBlock x:Name="TitleTextBlock" Text="? is unable to connect to ?" FontSize="18" Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+                <TextBlock x:Name="DescriptionTextBlock" Text="?" Margin="0,16,0,0" TextWrapping="Wrap" Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+                <TextBlock Text="More information:" Margin="0,16,0,0" TextWrapping="Wrap" Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+                <RichTextBox x:Name="ErrorRichTextBox" Padding="8" Margin="0,8,0,0" Block.LineHeight="2" FontFamily="Courier New" IsReadOnly="True" />
+            </StackPanel>
+        </Grid>
+
+        <Border Grid.Row="2" Padding="15" Background="{ui:ThemeResource SolidBackgroundFillColorSecondaryBrush}">
+            <StackPanel Orientation="Horizontal" FlowDirection="LeftToRight" HorizontalAlignment="Right">
+                <Button x:Name="CloseButton" MinWidth="100" Content="Close" Margin="12,0,0,0" />
+            </StackPanel>
+        </Border>
+    </Grid>
+</ui:UiWindow>

Bloxstrap/UI/Elements/Dialogs/ConnectivityDialog.xaml.cs

@@ -0,0 +1,42 @@
+using System.Media;
+using System.Windows.Interop;
+
+namespace Bloxstrap.UI.Elements.Dialogs
+{
+    // hmm... do i use MVVM for this?
+    // this is entirely static, so i think im fine without it, and this way is just so much more efficient
+
+    /// <summary>
+    /// Interaction logic for ExceptionDialog.xaml
+    /// </summary>
+    public partial class ConnectivityDialog
+    {
+        public ConnectivityDialog(string targetName, string description, Exception exception)
+        {
+            Exception? innerException = exception.InnerException;
+
+            InitializeComponent();
+
+            TitleTextBlock.Text = $"{App.ProjectName} is unable to connect to {targetName}";
+            DescriptionTextBlock.Text = description;
+
+            ErrorRichTextBox.Selection.Text = $"{exception.GetType()}: {exception.Message}";
+
+            if (innerException is not null)
+                ErrorRichTextBox.Selection.Text += $"\n\n===== Inner Exception =====\n{innerException.GetType()}: {innerException.Message}";
+
+            CloseButton.Click += delegate
+            {
+                Close();
+            };
+
+            SystemSounds.Hand.Play();
+
+            Loaded += delegate
+            {
+                IntPtr hWnd = new WindowInteropHelper(this).Handle;
+                NativeMethods.FlashWindow(hWnd, true);
+            };
+        }
+    }
+}

Bloxstrap/UI/ViewModels/Menu/BehaviourViewModel.cs

@@ -1,6 +1,4 @@
-using Bloxstrap.Exceptions;
-
-namespace Bloxstrap.UI.ViewModels.Menu
+namespace Bloxstrap.UI.ViewModels.Menu
 {
     public class BehaviourViewModel : NotifyPropertyChangedViewModel
     {