EscribePassword/MainWindow.xaml.cs

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System.Collections.ObjectModel;
using System.Text.Json;
using System.IO;
using System.Windows;
using Application = System.Windows.Application;
using System.Windows.Input;
using MouseButton = System.Windows.Input.MouseButton;
using Gma.System.MouseKeyHook;
using MouseEventArgs = System.Windows.Forms.MouseEventArgs;



namespace EscribePassword
{


    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private IKeyboardMouseEvents _globalHook;

        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += MainWindow_Loaded;
            this.MouseWheel += MainWindow_Wheel;
            HookManager();
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            ((App)Application.Current).SetInitialWindowPosition();
        }

        private void MainWindow_Wheel(object sender, MouseWheelEventArgs e)
        {
            if (DataContext is MView mv)
                mv.OnWheel(sender, e);
        }

        private void Window_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
            {
                this.DragMove();
            }
            else if (e.ChangedButton == MouseButton.Middle)
            {
                if (DataContext is MView mv && mv.SelectedPassword != null)
                {
                    mv.UtilizarCommand.Execute(mv.SelectedPassword);
                    e.Handled = true;  // Suprimir el evento
                }
            }
        }

        private void HookManager()
        {
            _globalHook = Hook.GlobalEvents();
            _globalHook.MouseWheel += GlobalHookMouseWheel;
            _globalHook.MouseDownExt += GlobalHookMouseDown;
        }

        private void GlobalHookMouseDown(object sender, MouseEventExtArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Middle)
            {
                var mouseButtonEventArgs = new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Middle)
                {
                    RoutedEvent = UIElement.MouseDownEvent
                };
                Window_MouseDown(sender, mouseButtonEventArgs);
            }
        }

        private void GlobalHookMouseWheel(object sender, MouseEventArgs e)
        {
            // Convierte MouseEventArgs a MouseWheelEventArgs
            var wheelArgs = new MouseWheelEventArgs(Mouse.PrimaryDevice, 0, e.Delta)
            {
                RoutedEvent = UIElement.MouseWheelEvent
            };
            MainWindow_Wheel(sender, wheelArgs);
        }

        protected override void OnClosed(EventArgs e)
        {
            _globalHook.MouseWheel -= GlobalHookMouseWheel;
            _globalHook.MouseDownExt -= GlobalHookMouseDown;
            _globalHook.Dispose();
            base.OnClosed(e);
        }
    }


    public partial class MView : ObservableObject
    {
        [ObservableProperty]
        private ObservableCollection<Passwords> passwords;

        [ObservableProperty]
        private ObservableCollection<Passwords> top_passwords;

        [ObservableProperty]
        private Passwords selectedPassword;

        public void OnWheel(object sender, MouseWheelEventArgs e)
        {
            if (Passwords.Count == 0) return;
            
            var index = Passwords.IndexOf(SelectedPassword);
            var max = Passwords.Count;
            if (e.Delta > 0)
                index++;
            else index--;
            if (index < 0) index = max-1;
            if (index >= max) index = 0;

            SelectedPassword = Passwords[index];
        }

        partial void OnSelectedPasswordChanged(Passwords value)
        {
            Top_passwords.Clear();
            Top_passwords.Add(value);
        }

        public MView()
        {
            // Suscribirse al evento de cierre de la aplicación
            Application.Current.Exit += OnApplicationExit;

            top_passwords = new ObservableCollection<Passwords>();
            passwords = new ObservableCollection<Passwords>(EstadoPersistente.Instance.Passwords);
            SelectedPassword = passwords.FirstOrDefault();
        }

        private void OnApplicationExit(object sender, ExitEventArgs e)
        {
            EstadoPersistente.Instance.Passwords = new List<Passwords>(passwords);
            EstadoPersistente.Instance.GuardarEstado();
        }

        [RelayCommand]
        private void Agregar()
        {
            Passwords newPassword = new Passwords { Usuario = "NuevoUsuario", Password = "NuevaContraseña" };
            passwords.Add(newPassword);
            SelectedPassword = newPassword;
        }

        [RelayCommand]
        private void Eliminar(Passwords password)
        {
            if (password != null)
            {
                passwords.Remove(password);
                SelectedPassword = null;
            }
        }

        [RelayCommand]
        private void Utilizar(Passwords password)
        {
            if (password != null)
            {
                ((App)Application.Current).PasteLogic.RestoreAndSimulatePaste(password);

                // Cerrar la aplicación después de la acción
                Application.Current.Shutdown();
            }
        }

        [RelayCommand]
        private void Cerrar()
        {
            // Cerrar la aplicación después de la acción
            Application.Current.Shutdown();
        }

    }

    internal class EstadoPersistente
    {
        // Ruta donde se guardará el estado
        private static readonly string _filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "estado.json");

        // Instancia privada estática, parte del patrón Singleton
        private static EstadoPersistente _instance;

        private List<Passwords> passwords;

        public List<Passwords> Passwords
        {
            get
            {
                if (passwords == null) passwords = new List<Passwords>();
                return passwords;
            }
            set
            {
                passwords = value;
            }
        }

        // Constructor público sin parámetros requerido para la deserialización
        public EstadoPersistente()
        {
            passwords = new List<Passwords>();
        }

        // Propiedad pública estática para acceder a la instancia
        public static EstadoPersistente Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = CargarEstado();
                }
                return _instance;
            }
        }

        // Método para guardar el estado en un archivo JSON
        public void GuardarEstado()
        {
            var options = new JsonSerializerOptions
            {
                WriteIndented = true // para una salida JSON formateada legiblemente
            };
            string json = JsonSerializer.Serialize(this, options);
            File.WriteAllText(_filePath, json);
        }

        // Método estático para cargar el estado desde un archivo JSON
        private static EstadoPersistente CargarEstado()
        {
            try
            {
                if (File.Exists(_filePath))
                {
                    string json = File.ReadAllText(_filePath);
                    return JsonSerializer.Deserialize<EstadoPersistente>(json);
                }
                return new EstadoPersistente(); // Devuelve una nueva instancia si no existe el archivo
            }
            catch
            {
                return new EstadoPersistente(); // Devuelve una nueva instancia si hay un error durante la carga
            }
        }
    }
}