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path: root/src/Ryujinx.Gtk3/UI/Windows/TitleUpdateWindow.cs
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using Gtk;
using LibHac.Common;
using LibHac.Fs;
using LibHac.Fs.Fsa;
using LibHac.FsSystem;
using LibHac.Ns;
using LibHac.Tools.FsSystem;
using LibHac.Tools.FsSystem.NcaUtils;
using Ryujinx.Common.Configuration;
using Ryujinx.Common.Utilities;
using Ryujinx.HLE.FileSystem;
using Ryujinx.UI.App.Common;
using Ryujinx.UI.Widgets;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using GUI = Gtk.Builder.ObjectAttribute;
using SpanHelpers = LibHac.Common.SpanHelpers;

namespace Ryujinx.UI.Windows
{
    public class TitleUpdateWindow : Window
    {
        private readonly MainWindow _parent;
        private readonly VirtualFileSystem _virtualFileSystem;
        private readonly string _titleId;
        private readonly string _updateJsonPath;

        private TitleUpdateMetadata _titleUpdateWindowData;

        private readonly Dictionary<RadioButton, string> _radioButtonToPathDictionary;
        private static readonly TitleUpdateMetadataJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());

#pragma warning disable CS0649, IDE0044 // Field is never assigned to, Add readonly modifier
        [GUI] Label _baseTitleInfoLabel;
        [GUI] Box _availableUpdatesBox;
        [GUI] RadioButton _noUpdateRadioButton;
#pragma warning restore CS0649, IDE0044

        public TitleUpdateWindow(MainWindow parent, VirtualFileSystem virtualFileSystem, string titleId, string titleName) : this(new Builder("Ryujinx.Gtk3.UI.Windows.TitleUpdateWindow.glade"), parent, virtualFileSystem, titleId, titleName) { }

        private TitleUpdateWindow(Builder builder, MainWindow parent, VirtualFileSystem virtualFileSystem, string titleId, string titleName) : base(builder.GetRawOwnedObject("_titleUpdateWindow"))
        {
            _parent = parent;

            builder.Autoconnect(this);

            _titleId = titleId;
            _virtualFileSystem = virtualFileSystem;
            _updateJsonPath = System.IO.Path.Combine(AppDataManager.GamesDirPath, _titleId, "updates.json");
            _radioButtonToPathDictionary = new Dictionary<RadioButton, string>();

            try
            {
                _titleUpdateWindowData = JsonHelper.DeserializeFromFile(_updateJsonPath, _serializerContext.TitleUpdateMetadata);
            }
            catch
            {
                _titleUpdateWindowData = new TitleUpdateMetadata
                {
                    Selected = "",
                    Paths = new List<string>(),
                };
            }

            _baseTitleInfoLabel.Text = $"Updates Available for {titleName} [{titleId.ToUpper()}]";

            foreach (string path in _titleUpdateWindowData.Paths)
            {
                AddUpdate(path);
            }

            if (_titleUpdateWindowData.Selected == "")
            {
                _noUpdateRadioButton.Active = true;
            }
            else
            {
                foreach ((RadioButton update, var _) in _radioButtonToPathDictionary.Where(keyValuePair => keyValuePair.Value == _titleUpdateWindowData.Selected))
                {
                    update.Active = true;
                }
            }
        }

        private void AddUpdate(string path)
        {
            if (File.Exists(path))
            {
                using FileStream file = new(path, FileMode.Open, FileAccess.Read);

                PartitionFileSystem nsp = new();
                nsp.Initialize(file.AsStorage()).ThrowIfFailure();

                try
                {
                    (Nca patchNca, Nca controlNca) = ApplicationLibrary.GetGameUpdateDataFromPartition(_virtualFileSystem, nsp, _titleId, 0);

                    if (controlNca != null && patchNca != null)
                    {
                        ApplicationControlProperty controlData = new();

                        using var nacpFile = new UniqueRef<IFile>();

                        controlNca.OpenFileSystem(NcaSectionType.Data, IntegrityCheckLevel.None).OpenFile(ref nacpFile.Ref, "/control.nacp".ToU8Span(), OpenMode.Read).ThrowIfFailure();
                        nacpFile.Get.Read(out _, 0, SpanHelpers.AsByteSpan(ref controlData), ReadOption.None).ThrowIfFailure();

                        RadioButton radioButton = new($"Version {controlData.DisplayVersionString.ToString()} - {path}");
                        radioButton.JoinGroup(_noUpdateRadioButton);

                        _availableUpdatesBox.Add(radioButton);
                        _radioButtonToPathDictionary.Add(radioButton, path);

                        radioButton.Show();
                        radioButton.Active = true;
                    }
                    else
                    {
                        GtkDialog.CreateErrorDialog("The specified file does not contain an update for the selected title!");
                    }
                }
                catch (Exception exception)
                {
                    GtkDialog.CreateErrorDialog($"{exception.Message}. Errored File: {path}");
                }
            }
        }

        private void RemoveUpdates(bool removeSelectedOnly = false)
        {
            foreach (RadioButton radioButton in _noUpdateRadioButton.Group)
            {
                if (radioButton.Label != "No Update" && (!removeSelectedOnly || radioButton.Active))
                {
                    _availableUpdatesBox.Remove(radioButton);
                    _radioButtonToPathDictionary.Remove(radioButton);
                    radioButton.Dispose();
                }
            }
        }

        private void AddButton_Clicked(object sender, EventArgs args)
        {
            using FileChooserNative fileChooser = new("Select update files", this, FileChooserAction.Open, "Add", "Cancel");

            fileChooser.SelectMultiple = true;

            FileFilter filter = new()
            {
                Name = "Switch Game Updates",
            };
            filter.AddPattern("*.nsp");

            fileChooser.AddFilter(filter);

            if (fileChooser.Run() == (int)ResponseType.Accept)
            {
                foreach (string path in fileChooser.Filenames)
                {
                    AddUpdate(path);
                }
            }
        }

        private void RemoveButton_Clicked(object sender, EventArgs args)
        {
            RemoveUpdates(true);
        }

        private void RemoveAllButton_Clicked(object sender, EventArgs args)
        {
            RemoveUpdates();
        }

        private void SaveButton_Clicked(object sender, EventArgs args)
        {
            _titleUpdateWindowData.Paths.Clear();
            _titleUpdateWindowData.Selected = "";

            foreach (string paths in _radioButtonToPathDictionary.Values)
            {
                _titleUpdateWindowData.Paths.Add(paths);
            }

            foreach (RadioButton radioButton in _noUpdateRadioButton.Group)
            {
                if (radioButton.Active)
                {
                    _titleUpdateWindowData.Selected = _radioButtonToPathDictionary.TryGetValue(radioButton, out string updatePath) ? updatePath : "";
                }
            }

            JsonHelper.SerializeToFile(_updateJsonPath, _titleUpdateWindowData, _serializerContext.TitleUpdateMetadata);

            _parent.UpdateGameTable();

            Dispose();
        }

        private void CancelButton_Clicked(object sender, EventArgs args)
        {
            Dispose();
        }
    }
}