IPTVplayer/TV Player WPF/ViewModels/MainViewModel.cs

using CommunityToolkit.Mvvm.Input;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using TV_Player.ViewModels;

namespace TV_Player
{
    public class MainViewModel : ObservableViewModelBase
    {
        private ContentControl? _control;
        public ContentControl? Control
        {
            get => _control;
            set => SetProperty(ref _control, value);
        }
       

        private bool _isTopPanelVisible;
        public bool IsTopPanelVisible
        {
            get => _isTopPanelVisible;
            set => SetProperty(ref _isTopPanelVisible, value);
        }

        private string _topPaneTitle;
        public string TopPanelTitle
        {
            get => _topPaneTitle;
            set => SetProperty(ref _topPaneTitle, value);
        }

        private WindowState _currentWindowState;
        public WindowState CurrentWindowState
        {
            get => _currentWindowState;
            set => SetProperty(ref _currentWindowState, value);
        }

        private WindowStyle _currentWindowStyle;
        public WindowStyle CurrentWindowStyle
        {
            get => _currentWindowStyle;
            set => SetProperty(ref _currentWindowStyle, value);
        }

        public ICommand OnKeyDownCommand { get; }

        public ICommand FullscreenCommand { get; }
        public ICommand CloseAppCommand { get; }

        public Action ButtonBackAction { get; set; }
        public ICommand BackCommand { get; }

        public ICommand SettingsCommand{ get; }

        public MainViewModel()
        {
            OnKeyDownCommand = new RelayCommand<KeyEventArgs>(OnKeyDown);
            BackCommand = new RelayCommand(OnButtonBackClick);
            FullscreenCommand = new RelayCommand(OnFullSctreenButtonClick);
            SettingsCommand = new RelayCommand(OnSettingsButtonClick);
            CloseAppCommand = new RelayCommand(OnCloseAppButtonClick);
            CurrentWindowStyle = WindowStyle.SingleBorderWindow;
        }

        public void OnFullSctreenButtonClick()
        {
            if (CurrentWindowState == WindowState.Normal)
            {
                CurrentWindowState = WindowState.Maximized;
                CurrentWindowStyle = WindowStyle.None;

            }
            else
            {
                CurrentWindowState = WindowState.Normal;
                CurrentWindowStyle = WindowStyle.SingleBorderWindow;
            }
        }

        public void OnCloseAppButtonClick()
        {
            if (Application.Current?.MainWindow is Window window)
            {
                window.Close();  // Allows proper shutdown sequence
            }
            else
            {
                Environment.Exit(0);  // Fallback if window not available
            }
        }

        private void OnButtonBackClick()
        {

            ButtonBackAction?.Invoke();
        }

        private void OnSettingsButtonClick()
        {
            TVPlayerViewModel.Instance.ShowSettingsScreen();
        }

        private void OnKeyDown(KeyEventArgs e)
        {
            if (e.Key == Key.Escape)
            {
                Environment.Exit(0);
            }
            if (e.Key == Key.Back)
            {
                ButtonBackAction?.Invoke();
            }
        }
    }
}