Ava UI: Mod Manager (#4390)

* Let’s start again

* Read folders and such

* Remove Open Mod Folder menu items

* Fix folder opening, Selecting/deselecting

* She works

* Fix GTK

* AddMod

* Delete

* Fix duplicate entries

* Fix file check

* Avalonia 11

* Style fixes

* Final style fixes

* Might be too general

* Remove unnecessary using

* Enable new mods by default

* More cleanup

* Fix saving metadata

* Dont deseralise ModMetadata several times

* Avalonia I hate you

* Confirmation dialgoues

* Allow selecting multiple folders

* Add back secondary folder

* Search both paths

* Fix formatting

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Rename Title to Application

* Generic locale key

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Locale Updates

* GDK Feedback

* Fix

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>

9 files changed, 619 insertions, 32 deletions

diff --git a/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml b/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml
index b8fe7e76..7f786cf3 100644
--- a/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml
+++ b/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml
@@ -47,13 +47,9 @@
         Header="{locale:Locale GameListContextMenuManageCheat}"
         ToolTip.Tip="{locale:Locale GameListContextMenuManageCheatToolTip}" />
     <MenuItem
-        Click="OpenModsDirectory_Click"
-        Header="{locale:Locale GameListContextMenuOpenModsDirectory}"
-        ToolTip.Tip="{locale:Locale GameListContextMenuOpenModsDirectoryToolTip}" />
-    <MenuItem
-        Click="OpenSdModsDirectory_Click"
-        Header="{locale:Locale GameListContextMenuOpenSdModsDirectory}"
-        ToolTip.Tip="{locale:Locale GameListContextMenuOpenSdModsDirectoryToolTip}" />
+        Click="OpenModManager_Click"
+        Header="{locale:Locale GameListContextMenuManageMod}"
+        ToolTip.Tip="{locale:Locale GameListContextMenuManageModToolTip}" />
     <Separator />
     <MenuItem Header="{locale:Locale GameListContextMenuCacheManagement}">
         <MenuItem
diff --git a/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml.cs b/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml.cs
index 0f007106..01d97709 100644
--- a/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml.cs
+++ b/src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml.cs
@@ -126,29 +126,13 @@ namespace Ryujinx.Ava.UI.Controls
             }
         }
 
-        public void OpenModsDirectory_Click(object sender, RoutedEventArgs args)
+        public async void OpenModManager_Click(object sender, RoutedEventArgs args)
         {
             var viewModel = (sender as MenuItem)?.DataContext as MainWindowViewModel;
 
             if (viewModel?.SelectedApplication != null)
             {
-                string modsBasePath = ModLoader.GetModsBasePath();
-                string titleModsPath = ModLoader.GetTitleDir(modsBasePath, viewModel.SelectedApplication.TitleId);
-
-                OpenHelper.OpenFolder(titleModsPath);
-            }
-        }
-
-        public void OpenSdModsDirectory_Click(object sender, RoutedEventArgs args)
-        {
-            var viewModel = (sender as MenuItem)?.DataContext as MainWindowViewModel;
-
-            if (viewModel?.SelectedApplication != null)
-            {
-                string sdModsBasePath = ModLoader.GetSdModsBasePath();
-                string titleModsPath = ModLoader.GetTitleDir(sdModsBasePath, viewModel.SelectedApplication.TitleId);
-
-                OpenHelper.OpenFolder(titleModsPath);
+                await ModManagerWindow.Show(ulong.Parse(viewModel.SelectedApplication.TitleId, NumberStyles.HexNumber), viewModel.SelectedApplication.TitleName);
             }
         }
 
diff --git a/src/Ryujinx.Ava/UI/Models/ModModel.cs b/src/Ryujinx.Ava/UI/Models/ModModel.cs
new file mode 100644
index 00000000..f68e1593
--- /dev/null
+++ b/src/Ryujinx.Ava/UI/Models/ModModel.cs
@@ -0,0 +1,30 @@
+using Ryujinx.Ava.UI.ViewModels;
+using System.IO;
+
+namespace Ryujinx.Ava.UI.Models
+{
+    public class ModModel : BaseModel
+    {
+        private bool _enabled;
+
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                _enabled = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public string Path { get; }
+        public string Name { get; }
+
+        public ModModel(string path, string name, bool enabled)
+        {
+            Path = path;
+            Name = name;
+            Enabled = enabled;
+        }
+    }
+}
diff --git a/src/Ryujinx.Ava/UI/ViewModels/DownloadableContentManagerViewModel.cs b/src/Ryujinx.Ava/UI/ViewModels/DownloadableContentManagerViewModel.cs
index cdecae77..2cd714f4 100644
--- a/src/Ryujinx.Ava/UI/ViewModels/DownloadableContentManagerViewModel.cs
+++ b/src/Ryujinx.Ava/UI/ViewModels/DownloadableContentManagerViewModel.cs
@@ -39,6 +39,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         private string _search;
         private readonly ulong _titleId;
+        private readonly IStorageProvider _storageProvider;
 
         private static readonly DownloadableContentJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
 
@@ -90,8 +91,6 @@ namespace Ryujinx.Ava.UI.ViewModels
             get => string.Format(LocaleManager.Instance[LocaleKeys.DlcWindowHeading], DownloadableContents.Count);
         }
 
-        public IStorageProvider StorageProvider;
-
         public DownloadableContentManagerViewModel(VirtualFileSystem virtualFileSystem, ulong titleId)
         {
             _virtualFileSystem = virtualFileSystem;
@@ -100,7 +99,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
             if (Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
             {
-                StorageProvider = desktop.MainWindow.StorageProvider;
+                _storageProvider = desktop.MainWindow.StorageProvider;
             }
 
             _downloadableContentJsonPath = Path.Combine(AppDataManager.GamesDirPath, titleId.ToString("x16"), "dlc.json");
@@ -194,7 +193,7 @@ namespace Ryujinx.Ava.UI.ViewModels
             {
                 Dispatcher.UIThread.InvokeAsync(async () =>
                 {
-                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance[LocaleKeys.DialogLoadNcaErrorMessage], ex.Message, containerPath));
+                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance[LocaleKeys.DialogLoadFileErrorMessage], ex.Message, containerPath));
                 });
             }
 
@@ -203,7 +202,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         public async void Add()
         {
-            var result = await StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+            var result = await _storageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
             {
                 Title = LocaleManager.Instance[LocaleKeys.SelectDlcDialogTitle],
                 AllowMultiple = true,
diff --git a/src/Ryujinx.Ava/UI/ViewModels/ModManagerViewModel.cs b/src/Ryujinx.Ava/UI/ViewModels/ModManagerViewModel.cs
new file mode 100644
index 00000000..7340873a
--- /dev/null
+++ b/src/Ryujinx.Ava/UI/ViewModels/ModManagerViewModel.cs
@@ -0,0 +1,260 @@
+using Avalonia;
+using Avalonia.Collections;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Platform.Storage;
+using Avalonia.Threading;
+using DynamicData;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Models;
+using Ryujinx.Common.Configuration;
+using Ryujinx.Common.Utilities;
+using Ryujinx.HLE.HOS;
+using System.IO;
+using System.Linq;
+
+namespace Ryujinx.Ava.UI.ViewModels
+{
+    public class ModManagerViewModel : BaseModel
+    {
+        private readonly string _modJsonPath;
+
+        private AvaloniaList<ModModel> _mods = new();
+        private AvaloniaList<ModModel> _views = new();
+        private AvaloniaList<ModModel> _selectedMods = new();
+
+        private string _search;
+        private readonly ulong _applicationId;
+        private readonly IStorageProvider _storageProvider;
+
+        private static readonly ModMetadataJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
+
+        public AvaloniaList<ModModel> Mods
+        {
+            get => _mods;
+            set
+            {
+                _mods = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(ModCount));
+                Sort();
+            }
+        }
+
+        public AvaloniaList<ModModel> Views
+        {
+            get => _views;
+            set
+            {
+                _views = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public AvaloniaList<ModModel> SelectedMods
+        {
+            get => _selectedMods;
+            set
+            {
+                _selectedMods = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public string Search
+        {
+            get => _search;
+            set
+            {
+                _search = value;
+                OnPropertyChanged();
+                Sort();
+            }
+        }
+
+        public string ModCount
+        {
+            get => string.Format(LocaleManager.Instance[LocaleKeys.ModWindowHeading], Mods.Count);
+        }
+
+        public ModManagerViewModel(ulong applicationId)
+        {
+            _applicationId = applicationId;
+
+            _modJsonPath = Path.Combine(AppDataManager.GamesDirPath, applicationId.ToString("x16"), "mods.json");
+
+            if (Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+            {
+                _storageProvider = desktop.MainWindow.StorageProvider;
+            }
+
+            LoadMods(applicationId);
+        }
+
+        private void LoadMods(ulong applicationId)
+        {
+            Mods.Clear();
+            SelectedMods.Clear();
+
+            string[] modsBasePaths = [ModLoader.GetSdModsBasePath(), ModLoader.GetModsBasePath()];
+
+            foreach (var path in modsBasePaths)
+            {
+                var modCache = new ModLoader.ModCache();
+
+                ModLoader.QueryContentsDir(modCache, new DirectoryInfo(Path.Combine(path, "contents")), applicationId);
+
+                foreach (var mod in modCache.RomfsDirs)
+                {
+                    var modModel = new ModModel(mod.Path.Parent.FullName, mod.Name, mod.Enabled);
+                    if (Mods.All(x => x.Path != mod.Path.Parent.FullName))
+                    {
+                        Mods.Add(modModel);
+                    }
+                }
+
+                foreach (var mod in modCache.RomfsContainers)
+                {
+                    Mods.Add(new ModModel(mod.Path.FullName, mod.Name, mod.Enabled));
+                }
+
+                foreach (var mod in modCache.ExefsDirs)
+                {
+                    var modModel = new ModModel(mod.Path.Parent.FullName, mod.Name, mod.Enabled);
+                    if (Mods.All(x => x.Path != mod.Path.Parent.FullName))
+                    {
+                        Mods.Add(modModel);
+                    }
+                }
+
+                foreach (var mod in modCache.ExefsContainers)
+                {
+                    Mods.Add(new ModModel(mod.Path.FullName, mod.Name, mod.Enabled));
+                }
+            }
+
+            Sort();
+        }
+
+        public void Sort()
+        {
+            Mods.AsObservableChangeSet()
+                .Filter(Filter)
+                .Bind(out var view).AsObservableList();
+
+            _views.Clear();
+            _views.AddRange(view);
+
+            SelectedMods = new(Views.Where(x => x.Enabled));
+
+            OnPropertyChanged(nameof(ModCount));
+            OnPropertyChanged(nameof(Views));
+            OnPropertyChanged(nameof(SelectedMods));
+        }
+
+        private bool Filter(object arg)
+        {
+            if (arg is ModModel content)
+            {
+                return string.IsNullOrWhiteSpace(_search) || content.Name.ToLower().Contains(_search.ToLower());
+            }
+
+            return false;
+        }
+
+        public void Save()
+        {
+            ModMetadata modData = new();
+
+            foreach (ModModel mod in Mods)
+            {
+                modData.Mods.Add(new Mod
+                {
+                    Name = mod.Name,
+                    Path = mod.Path,
+                    Enabled = SelectedMods.Contains(mod),
+                });
+            }
+
+            JsonHelper.SerializeToFile(_modJsonPath, modData, _serializerContext.ModMetadata);
+        }
+
+        public void Delete(ModModel model)
+        {
+            Directory.Delete(model.Path, true);
+
+            Mods.Remove(model);
+            OnPropertyChanged(nameof(ModCount));
+            Sort();
+        }
+
+        private void AddMod(DirectoryInfo directory)
+        {
+            var directories = Directory.GetDirectories(directory.ToString(), "*", SearchOption.AllDirectories);
+            var destinationDir = ModLoader.GetApplicationDir(ModLoader.GetSdModsBasePath(), _applicationId.ToString("x16"));
+
+            foreach (var dir in directories)
+            {
+                string dirToCreate = dir.Replace(directory.Parent.ToString(), destinationDir);
+
+                // Mod already exists
+                if (Directory.Exists(dirToCreate))
+                {
+                    Dispatcher.UIThread.Post(async () =>
+                    {
+                        await ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadFileErrorMessage, LocaleKeys.DialogModAlreadyExistsMessage, dirToCreate));
+                    });
+
+                    return;
+                }
+
+                Directory.CreateDirectory(dirToCreate);
+            }
+
+            var files = Directory.GetFiles(directory.ToString(), "*", SearchOption.AllDirectories);
+
+            foreach (var file in files)
+            {
+                File.Copy(file, file.Replace(directory.Parent.ToString(), destinationDir), true);
+            }
+
+            LoadMods(_applicationId);
+        }
+
+        public async void Add()
+        {
+            var result = await _storageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions
+            {
+                Title = LocaleManager.Instance[LocaleKeys.SelectModDialogTitle],
+                AllowMultiple = true,
+            });
+
+            foreach (var folder in result)
+            {
+                AddMod(new DirectoryInfo(folder.Path.LocalPath));
+            }
+        }
+
+        public void DeleteAll()
+        {
+            foreach (var mod in Mods)
+            {
+                Directory.Delete(mod.Path, true);
+            }
+
+            Mods.Clear();
+            OnPropertyChanged(nameof(ModCount));
+            Sort();
+        }
+
+        public void EnableAll()
+        {
+            SelectedMods = new(Mods);
+        }
+
+        public void DisableAll()
+        {
+            SelectedMods.Clear();
+        }
+    }
+}
diff --git a/src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs b/src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs
index 5090a8c7..8a287eca 100644
--- a/src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs
+++ b/src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs
@@ -192,7 +192,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                 }
                 catch (Exception ex)
                 {
-                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadNcaErrorMessage, ex.Message, path)));
+                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadFileErrorMessage, ex.Message, path)));
                 }
             }
         }
diff --git a/src/Ryujinx.Ava/UI/Windows/CheatWindow.axaml.cs b/src/Ryujinx.Ava/UI/Windows/CheatWindow.axaml.cs
index c2de67ab..46441faa 100644
--- a/src/Ryujinx.Ava/UI/Windows/CheatWindow.axaml.cs
+++ b/src/Ryujinx.Ava/UI/Windows/CheatWindow.axaml.cs
@@ -41,7 +41,7 @@ namespace Ryujinx.Ava.UI.Windows
             InitializeComponent();
 
             string modsBasePath = ModLoader.GetModsBasePath();
-            string titleModsPath = ModLoader.GetTitleDir(modsBasePath, titleId);
+            string titleModsPath = ModLoader.GetApplicationDir(modsBasePath, titleId);
             ulong titleIdValue = ulong.Parse(titleId, NumberStyles.HexNumber);
 
             _enabledCheatsPath = Path.Combine(titleModsPath, "cheats", "enabled.txt");
diff --git a/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml b/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml
new file mode 100644
index 00000000..d9f58640
--- /dev/null
+++ b/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml
@@ -0,0 +1,179 @@
+<UserControl
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:locale="clr-namespace:Ryujinx.Ava.Common.Locale"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:viewModels="clr-namespace:Ryujinx.Ava.UI.ViewModels"
+    xmlns:models="clr-namespace:Ryujinx.Ava.UI.Models"
+    xmlns:ui="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
+    Width="500"
+    Height="380"
+    mc:Ignorable="d"
+    x:Class="Ryujinx.Ava.UI.Windows.ModManagerWindow"
+    x:CompileBindings="True"
+    x:DataType="viewModels:ModManagerViewModel"
+    Focusable="True">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Panel
+            Margin="0 0 0 10"
+            Grid.Row="0">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <TextBlock
+                    Grid.Column="0"
+                    Text="{Binding ModCount}" />
+                <StackPanel
+                    Margin="10 0"
+                    Grid.Column="1"
+                    Orientation="Horizontal">
+                    <Button
+                        Name="EnableAllButton"
+                        MinWidth="90"
+                        Margin="5"
+                        Command="{ReflectionBinding EnableAll}">
+                        <TextBlock Text="{locale:Locale DlcManagerEnableAllButton}" />
+                    </Button>
+                    <Button
+                        Name="DisableAllButton"
+                        MinWidth="90"
+                        Margin="5"
+                        Command="{ReflectionBinding DisableAll}">
+                        <TextBlock Text="{locale:Locale DlcManagerDisableAllButton}" />
+                    </Button>
+                </StackPanel>
+                <TextBox
+                    Grid.Column="2"
+                    MinHeight="27"
+                    MaxHeight="27"
+                    HorizontalAlignment="Stretch"
+                    Watermark="{locale:Locale Search}"
+                    Text="{Binding Search}" />
+            </Grid>
+        </Panel>
+        <Border
+            Grid.Row="1"
+            Margin="0 0 0 24"
+            HorizontalAlignment="Stretch"
+            VerticalAlignment="Stretch"
+            BorderBrush="{DynamicResource AppListHoverBackgroundColor}"
+            BorderThickness="1"
+            CornerRadius="5"
+            Padding="2.5">
+            <ListBox
+                AutoScrollToSelectedItem="False"
+                SelectionMode="Multiple, Toggle"
+                Background="Transparent"
+                SelectionChanged="OnSelectionChanged"
+                SelectedItems="{Binding SelectedMods, Mode=TwoWay}"
+                ItemsSource="{Binding Views}">
+                <ListBox.DataTemplates>
+                    <DataTemplate
+                        DataType="models:ModModel">
+                        <Panel Margin="10">
+                            <Grid>
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="*" />
+                                    <ColumnDefinition Width="Auto" />
+                                </Grid.ColumnDefinitions>
+                                <TextBlock
+                                    HorizontalAlignment="Left"
+                                    VerticalAlignment="Center"
+                                    MaxLines="2"
+                                    TextWrapping="Wrap"
+                                    TextTrimming="CharacterEllipsis"
+                                    Text="{Binding Name}" />
+                                <StackPanel
+                                    Grid.Column="1"
+                                    Spacing="10"
+                                    Orientation="Horizontal"
+                                    HorizontalAlignment="Right">
+                                    <Button
+                                        VerticalAlignment="Center"
+                                        HorizontalAlignment="Right"
+                                        Padding="10"
+                                        MinWidth="0"
+                                        MinHeight="0"
+                                        Click="OpenLocation">
+                                        <ui:SymbolIcon
+                                            Symbol="OpenFolder"
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center" />
+                                    </Button>
+                                    <Button
+                                        VerticalAlignment="Center"
+                                        HorizontalAlignment="Right"
+                                        Padding="10"
+                                        MinWidth="0"
+                                        MinHeight="0"
+                                        Click="DeleteMod">
+                                        <ui:SymbolIcon
+                                            Symbol="Cancel"
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center" />
+                                    </Button>
+                                </StackPanel>
+                            </Grid>
+                        </Panel>
+                    </DataTemplate>
+                </ListBox.DataTemplates>
+                <ListBox.Styles>
+                    <Style Selector="ListBoxItem">
+                        <Setter Property="Background" Value="Transparent" />
+                    </Style>
+                </ListBox.Styles>
+            </ListBox>
+        </Border>
+        <Panel
+            Grid.Row="2"
+            HorizontalAlignment="Stretch">
+            <StackPanel
+                Orientation="Horizontal"
+                Spacing="10"
+                HorizontalAlignment="Left">
+                <Button
+                    Name="AddButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Command="{Binding Add}">
+                    <TextBlock Text="{locale:Locale SettingsTabGeneralAdd}" />
+                </Button>
+                <Button
+                    Name="RemoveAllButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="DeleteAll">
+                    <TextBlock Text="{locale:Locale ModManagerDeleteAllButton}" />
+                </Button>
+            </StackPanel>
+            <StackPanel
+                Orientation="Horizontal"
+                Spacing="10"
+                HorizontalAlignment="Right">
+                <Button
+                    Name="SaveButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="SaveAndClose">
+                    <TextBlock Text="{locale:Locale SettingsButtonSave}" />
+                </Button>
+                <Button
+                    Name="CancelButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="Close">
+                    <TextBlock Text="{locale:Locale InputDialogCancel}" />
+                </Button>
+            </StackPanel>
+        </Panel>
+    </Grid>
+</UserControl>
diff --git a/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml.cs b/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml.cs
new file mode 100644
index 00000000..5de09ba0
--- /dev/null
+++ b/src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml.cs
@@ -0,0 +1,139 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Styling;
+using FluentAvalonia.UI.Controls;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Models;
+using Ryujinx.Ava.UI.ViewModels;
+using Ryujinx.Ui.Common.Helper;
+using System.Threading.Tasks;
+using Button = Avalonia.Controls.Button;
+
+namespace Ryujinx.Ava.UI.Windows
+{
+    public partial class ModManagerWindow : UserControl
+    {
+        public ModManagerViewModel ViewModel;
+
+        public ModManagerWindow()
+        {
+            DataContext = this;
+
+            InitializeComponent();
+        }
+
+        public ModManagerWindow(ulong titleId)
+        {
+            DataContext = ViewModel = new ModManagerViewModel(titleId);
+
+            InitializeComponent();
+        }
+
+        public static async Task Show(ulong titleId, string titleName)
+        {
+            ContentDialog contentDialog = new()
+            {
+                PrimaryButtonText = "",
+                SecondaryButtonText = "",
+                CloseButtonText = "",
+                Content = new ModManagerWindow(titleId),
+                Title = string.Format(LocaleManager.Instance[LocaleKeys.ModWindowHeading], titleName, titleId.ToString("X16")),
+            };
+
+            Style bottomBorder = new(x => x.OfType<Grid>().Name("DialogSpace").Child().OfType<Border>());
+            bottomBorder.Setters.Add(new Setter(IsVisibleProperty, false));
+
+            contentDialog.Styles.Add(bottomBorder);
+
+            await contentDialog.ShowAsync();
+        }
+
+        private void SaveAndClose(object sender, RoutedEventArgs e)
+        {
+            ViewModel.Save();
+            ((ContentDialog)Parent).Hide();
+        }
+
+        private void Close(object sender, RoutedEventArgs e)
+        {
+            ((ContentDialog)Parent).Hide();
+        }
+
+        private async void DeleteMod(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button)
+            {
+                if (button.DataContext is ModModel model)
+                {
+                    var result = await ContentDialogHelper.CreateConfirmationDialog(
+                        LocaleManager.Instance[LocaleKeys.DialogWarning],
+                        LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogModManagerDeletionWarningMessage, model.Name),
+                        LocaleManager.Instance[LocaleKeys.InputDialogYes],
+                        LocaleManager.Instance[LocaleKeys.InputDialogNo],
+                        LocaleManager.Instance[LocaleKeys.RyujinxConfirm]);
+
+                    if (result == UserResult.Yes)
+                    {
+                        ViewModel.Delete(model);
+                    }
+                }
+            }
+        }
+
+        private async void DeleteAll(object sender, RoutedEventArgs e)
+        {
+            var result = await ContentDialogHelper.CreateConfirmationDialog(
+                LocaleManager.Instance[LocaleKeys.DialogWarning],
+                LocaleManager.Instance[LocaleKeys.DialogModManagerDeletionAllWarningMessage],
+                LocaleManager.Instance[LocaleKeys.InputDialogYes],
+                LocaleManager.Instance[LocaleKeys.InputDialogNo],
+                LocaleManager.Instance[LocaleKeys.RyujinxConfirm]);
+
+            if (result == UserResult.Yes)
+            {
+                ViewModel.DeleteAll();
+            }
+        }
+
+        private void OpenLocation(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button)
+            {
+                if (button.DataContext is ModModel model)
+                {
+                    OpenHelper.OpenFolder(model.Path);
+                }
+            }
+        }
+
+        private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            foreach (var content in e.AddedItems)
+            {
+                if (content is ModModel model)
+                {
+                    var index = ViewModel.Mods.IndexOf(model);
+
+                    if (index != -1)
+                    {
+                        ViewModel.Mods[index].Enabled = true;
+                    }
+                }
+            }
+
+            foreach (var content in e.RemovedItems)
+            {
+                if (content is ModModel model)
+                {
+                    var index = ViewModel.Mods.IndexOf(model);
+
+                    if (index != -1)
+                    {
+                        ViewModel.Mods[index].Enabled = false;
+                    }
+                }
+            }
+        }
+    }
+}