fixes/reload button fix

src/Markdowser/Utilities/CacheService.cs

@@ -1,15 +1,13 @@
 using Markdowser.ViewModels;
 using System.Collections.Generic;
 
-namespace Markdowser.Utilities
-{
     namespace Markdowser.Utilities
     {
         public class CacheService
         {
             private Dictionary<string, ContentViewModelBase> cache = new Dictionary<string, ContentViewModelBase>();
 
-            public ContentViewModelBase Get(string url)
+            public ContentViewModelBase? Get(string url)
             {
                 if (cache.ContainsKey(url))
                 {
@@ -26,5 +24,4 @@ namespace Markdowser.Utilities
                 cache[url] = content;
             }
         }
-    }
-}
+    }

src/Markdowser/ViewModels/MainWindowViewModel.cs

@@ -6,7 +6,6 @@ using Markdowser.Models;
 using Markdowser.Processing;
 using Markdowser.Processing.Processors;
 using Markdowser.Utilities;
-using Markdowser.Utilities.Markdowser.Utilities;
 using Markdowser.ViewModels.Content;
 
 using ReactiveUI;
@@ -103,6 +102,8 @@ public partial class MainWindowViewModel : ViewModelBase
     public bool ForwardEnabled => GlobalState.ForwardHistory.Count > 0;
     public bool ProgressIndeterminate => Progress == 0;
     public ICommand Browse => ReactiveCommand.Create(FetchUrl);
+    public ICommand Reload => ReactiveCommand.Create(FetchUrlIgnoringCache);
+    
 
     public ICommand Back => ReactiveCommand.Create(() =>
     {
@@ -315,4 +316,93 @@ private void FetchUrl()
         }
     });
 }
+
+private void FetchUrlIgnoringCache()
+{
+    if (IsBusy)
+    {
+        WindowNotificationManager.Show(new Notification("Busy", "The browser is currently busy.", NotificationType.Warning));
+        return;
+    }
+
+    if (string.IsNullOrWhiteSpace(Url))
+    {
+        Content = DefaultContent;
+        Debug.WriteLine("URL is empty.");
+        CurrentTab.Header = "New Tab";
+        return;
+    }
+
+    if (!IsValidHttpUri(Url, out _))
+    {
+        if (Url.StartsWith("//"))
+        {
+            Url = $"https:{Url}";
+        }
+        else
+        {
+            // Search with duckduckgo
+            try
+            {
+                Url = string.Format(Settings.Current.SearchEngineUrl, Uri.EscapeDataString(Url));
+            }
+            catch (FormatException ex)
+            {
+                WindowNotificationManager.Show(new Notification("Invalid Search Engine URL", $"{ex.Message}", NotificationType.Error));
+            }
+        }
+    }
+
+    IsBusy = true;
+    Progress = 0;
+
+    _ = Task.Run(async () =>
+    {
+        Debug.WriteLine("Fetching URL...");
+
+        try
+        {
+            HttpResponseMessage httpResponseMessage = await httpClient.GetAsync(Url);
+
+            string? newUrl = httpResponseMessage.RequestMessage?.RequestUri?.ToString();
+
+            if (newUrl is not null && newUrl != Url)
+            {
+                string oldUrl = Url;
+                Dispatcher.UIThread.Post(() => WindowNotificationManager.Show(new Notification("Redirected", $"Redirected from\n{oldUrl}\nto\n{newUrl}", NotificationType.Warning)));
+                Url = newUrl;
+            }
+
+            if (!httpResponseMessage.IsSuccessStatusCode)
+            {
+                IsBusy = false;
+
+                StringBuilder errorMessage = new();
+
+                _ = errorMessage.AppendLine($"# {(int)httpResponseMessage.StatusCode} {httpResponseMessage.StatusCode}");
+                _ = errorMessage.AppendLine($"Failed to fetch URL: {httpResponseMessage.ReasonPhrase}");
+
+                Content = new MarkdownContentViewModel("Error", errorMessage.ToString());
+                return;
+            }
+
+            Content = await contentProcessorManager.ProcessContent(httpResponseMessage, new Progress<ProcessingProgress>(p => Progress = p.Percentage));
+            cacheService.Set(Url, Content);
+
+            Dispatcher.UIThread.Post(() => CurrentTab.Header = Content.Title);
+        }
+        catch (HttpRequestException e)
+        {
+            // Handle exception
+        }
+        catch (Exception e)
+        {
+            // Handle exception
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    });
+}
 }

src/Markdowser/Views/MainWindow.axaml

@@ -32,7 +32,7 @@
 
     <Window.KeyBindings>
         <KeyBinding Gesture="Ctrl+R" Command="{Binding Browse}" />
-        <KeyBinding Gesture="F5" Command="{Binding Browse}" />
+        <KeyBinding Gesture="F5" Command="{Binding Reload}" />
         <KeyBinding Gesture="Alt+Home" Command="{StaticResource HomeCommand}" />
         <KeyBinding Gesture="Alt+H" Command="{StaticResource HomeCommand}" />
         <KeyBinding Gesture="Alt+Left" Command="{Binding Back}" />
@@ -85,6 +85,7 @@
                 <Button Grid.Column="1" i:Attached.Icon="fa-solid fa-caret-right" IsEnabled="{Binding ForwardEnabled}" Command="{Binding Forward}" />
                 <Button Grid.Column="2" i:Attached.Icon="fa-solid fa-rotate-right" Command="{Binding Browse}" />
                 <Button Grid.Column="3" i:Attached.Icon="fa-solid fa-house" Command="{StaticResource HomeCommand}" />
+                <Button Grid.Column="4" i:Attached.Icon="fa-solid fa-sync" Command="{Binding Reload}" />
 
                 <Grid Grid.Column="4">
                     <TextBox IsVisible="{Binding !IsBusy}" Watermark="Search or type a URL" Text="{Binding Url}" BorderThickness="0">