Add clean cache option

Author: Jack251970

Flow.Launcher/Languages/en.xaml

@@ -325,6 +325,8 @@
     <system:String x:Key="logfolder">Log Folder</system:String>
     <system:String x:Key="clearlogfolder">Clear Logs</system:String>
     <system:String x:Key="clearlogfolderMessage">Are you sure you want to delete all logs?</system:String>
+    <system:String x:Key="clearcachefolder">Clear Caches</system:String>
+    <system:String x:Key="clearcachefolderMessage">Are you sure you want to delete all caches?</system:String>
     <system:String x:Key="welcomewindow">Wizard</system:String>
     <system:String x:Key="userdatapath">User Data Location</system:String>
     <system:String x:Key="userdatapathToolTip">User settings and installed plugins are saved in the user data folder. This location may vary depending on whether it's in portable mode or not.</system:String>

Flow.Launcher/SettingPages/ViewModels/SettingsPaneAboutViewModel.cs

@@ -27,6 +27,15 @@ public string LogFolderSize
         }
     }
 
+    public string CacheFolderSize
+    {
+        get
+        {
+            var size = GetCacheFiles().Sum(file => file.Length);
+            return $"{App.API.GetTranslation("clearcachefolder")} ({BytesToReadableString(size)})";
+        }
+    }
+
     public string Website => Constant.Website;
     public string SponsorPage => Constant.SponsorPage;
     public string ReleaseNotes => _updater.GitHubRepository + "/releases/latest";
@@ -98,6 +107,21 @@ private void AskClearLogFolderConfirmation()
         }
     }
 
+    [RelayCommand]
+    private void AskClearCacheFolderConfirmation()
+    {
+        var confirmResult = App.API.ShowMsgBox(
+            App.API.GetTranslation("clearcachefolderMessage"),
+            App.API.GetTranslation("clearcachefolder"),
+            MessageBoxButton.YesNo
+        );
+
+        if (confirmResult == MessageBoxResult.Yes)
+        {
+            ClearCacheFolder();
+        }
+    }
+
     [RelayCommand]
     private void OpenSettingsFolder()
     {
@@ -112,7 +136,6 @@ private void OpenParentOfSettingsFolder(object parameter)
         App.API.OpenDirectory(parentFolderPath);
     }
 
-
     [RelayCommand]
     private void OpenLogsFolder()
     {
@@ -147,6 +170,30 @@ private static List<FileInfo> GetLogFiles(string version = "")
         return GetLogDir(version).EnumerateFiles("*", SearchOption.AllDirectories).ToList();
     }
 
+    private void ClearCacheFolder()
+    {
+        var cacheDirectory = GetCacheDir();
+        var cacheFiles = GetCacheFiles();
+
+        cacheFiles.ForEach(f => f.Delete());
+
+        cacheDirectory.EnumerateDirectories("*", SearchOption.TopDirectoryOnly)
+            .ToList()
+            .ForEach(dir => dir.Delete(true));
+
+        OnPropertyChanged(nameof(CacheFolderSize));
+    }
+
+    private static DirectoryInfo GetCacheDir()
+    {
+        return new DirectoryInfo(DataLocation.CacheDirectory);
+    }
+
+    private static List<FileInfo> GetCacheFiles()
+    {
+        return GetCacheDir().EnumerateFiles("*", SearchOption.AllDirectories).ToList();
+    }
+
     private static string BytesToReadableString(long bytes)
     {
         const int scale = 1024;

Flow.Launcher/SettingPages/Views/SettingsPaneAbout.xaml

@@ -90,6 +90,10 @@
                 Margin="0 12 0 0"
                 Icon="">
                 <StackPanel Orientation="Horizontal">
+                    <Button
+                        Margin="0 0 12 0"
+                        Command="{Binding AskClearCacheFolderConfirmationCommand}"
+                        Content="{Binding CacheFolderSize, Mode=OneWay}" />
                     <Button
                         Margin="0 0 12 0"
                         Command="{Binding AskClearLogFolderConfirmationCommand}"