using System.Diagnostics;
using System.Windows;

namespace WpfMaiTouchEmulator;

public partial class MainWindow : Window
{
    private readonly MaiTouchSensorButtonStateManager buttonState;
    private readonly MaiTouchComConnector connector;
    private readonly VirtualComPortManager comPortManager;
    private TouchPanel _touchPanel;

    public MainWindow()
    {
        InitializeComponent();
        DataContext = new MainWindowViewModel()
        {
            IsDebugEnabled = Properties.Settings.Default.IsDebugEnabled,
            IsAutomaticPortConnectingEnabled = Properties.Settings.Default.IsAutomaticPortConnectingEnabled,
            IsAutomaticPositioningEnabled = Properties.Settings.Default.IsAutomaticPositioningEnabled,
            IsExitWithSinmaiEnabled = Properties.Settings.Default.IsExitWithSinmaiEnabled,
            IsRingButtonEmulationEnabled = Properties.Settings.Default.IsRingButtonEmulationEnabled
        };

        Title = "Mai Touch Emulator";
        buttonState = new MaiTouchSensorButtonStateManager(buttonStateValue);
        connector = new MaiTouchComConnector(buttonState, (MainWindowViewModel)DataContext);
        comPortManager = new VirtualComPortManager((MainWindowViewModel)DataContext);
        connector.OnConnectStatusChange = (status) =>
        {
            connectionStateLabel.Content = status;
        };

        connector.OnConnectError = () =>
        {
            var dataContext = (MainWindowViewModel)DataContext;
            dataContext.IsAutomaticPortConnectingEnabled = false;
        };

        connector.OnDataSent = (data) =>
        {
            Application.Current.Dispatcher.Invoke(() =>
            {
                SentLogBox.AppendText(data + Environment.NewLine);
                SentLogBox.ScrollToEnd();
            });
        };
        connector.OnDataRecieved = (data) =>
        {
            Application.Current.Dispatcher.Invoke(() =>
            {
                RecievedLogBox.AppendText(data + Environment.NewLine);
                RecievedLogBox.ScrollToEnd();
            });
        };

        if (Properties.Settings.Default.FirstOpen)
        {
            Logger.Info("First open occurred");
            ShowSetupInstructionsDialog();
            Properties.Settings.Default.FirstOpen = false;
            Properties.Settings.Default.Save();
        }


        Loaded += (s, e) => {
            Logger.Info("Main window loaded, creating touch panel");
            _touchPanel = new TouchPanel();
            _touchPanel.onTouch = (value) => { buttonState.PressButton(value); };
            _touchPanel.onRelease = (value) => { buttonState.ReleaseButton(value); };
            _touchPanel.onInitialReposition = () => { WindowState = WindowState.Minimized; };
            _touchPanel.Show();

            var dataContext = (MainWindowViewModel)DataContext;
            _touchPanel.DataContext = dataContext;

            _touchPanel.SetDebugMode(dataContext.IsDebugEnabled);
            if (Properties.Settings.Default.IsAutomaticPositioningEnabled)
            {
                _touchPanel.DragWindowHandle.Visibility = Visibility.Hidden;
                _touchPanel.ResizeGrip.Visibility = Visibility.Hidden;
            }
            AutomaticTouchPanelPositioningLoop();
            AutomaticPortConnectingLoop();
            ExitWithSinmaiLoop();
        };
    }

    private async void MainWindow_Closing(object? sender, System.ComponentModel.CancelEventArgs e)
    {
        e.Cancel = true;
        await connector.Disconnect();
        _touchPanel.Close();
        Closing -= MainWindow_Closing;
        e.Cancel = false;
        Application.Current.Shutdown();
    }

    private async void ExitWithSinmaiLoop()
    {
        Process? sinamiProcess = null;
        while (sinamiProcess == null)
        {
            var processes = Process.GetProcessesByName("Sinmai");
            if (processes.Length > 0)
            {
                Logger.Info("Found sinmai process to exit alongside with");
                sinamiProcess = processes[0];
            }
            else
            {
                await Task.Delay(1000);
            }
        }
        var dataContext = (MainWindowViewModel)DataContext;

        if (dataContext.IsExitWithSinmaiEnabled)
        {
            try
            {
                await sinamiProcess.WaitForExitAsync();
                Logger.Info("Sinmai exited");
                if (dataContext.IsExitWithSinmaiEnabled)
                {
                    Logger.Info("Disconnecting from COM port before shutting down");
                    await connector.Disconnect();
                    Logger.Info("Shutting down...");
                    Application.Current.Shutdown();
                }
            }
            catch (Exception ex)
            {
                Logger.Error("Failed to wait for sinmai to exit", ex);
                dataContext.IsExitWithSinmaiEnabled = false;
                Properties.Settings.Default.IsExitWithSinmaiEnabled = dataContext.IsExitWithSinmaiEnabled;
                Properties.Settings.Default.Save();
                MessageBox.Show(dataContext.TxtFailedToSetupSinmaiExit, dataContext.TxtFailedToSetupSinmaiExitHeader, MessageBoxButton.OK, MessageBoxImage.Information);
            }
        }
    }

    private void ShowSetupInstructionsDialog()
    {
        var dataContext = (MainWindowViewModel)DataContext;
        MessageBox.Show(dataContext.TxtSetupInstructions, dataContext.TxtSetupInstructionsHeader, MessageBoxButton.OK, MessageBoxImage.Information);
    }

    private async void AutomaticTouchPanelPositioningLoop()
    {
        var dataContext = (MainWindowViewModel)DataContext;
        while (true)
        {
            if (dataContext.IsAutomaticPositioningEnabled)
            {
                _touchPanel.PositionTouchPanel();
            }
        
            await Task.Delay(1000);
        }
    }

    private async void AutomaticPortConnectingLoop()
    {
        var dataContext = (MainWindowViewModel)DataContext;
        while (true)
        {
            if (dataContext.IsAutomaticPortConnectingEnabled)
            {
                connector.StartTouchSensorPolling();
            }
            await Task.Delay(1000);
        }
    }
    

    private void ConnectToPortButton_Click(object sender, RoutedEventArgs e)
    {
        connector.StartTouchSensorPolling();
    }

    private void debugMode_Click(object sender, RoutedEventArgs e)
    {
        var dataContext = (MainWindowViewModel)DataContext;
        var enabled = !dataContext.IsDebugEnabled;
        dataContext.IsDebugEnabled = !enabled;
        Properties.Settings.Default.IsDebugEnabled = dataContext.IsDebugEnabled;
        Properties.Settings.Default.Save();
        _touchPanel.SetDebugMode(dataContext.IsDebugEnabled);
    }

    private void automaticTouchPanelPositioning_Click(object sender, RoutedEventArgs e)
    {
        var dataContext = (MainWindowViewModel)DataContext;
        var enabled = !dataContext.IsAutomaticPositioningEnabled;
        dataContext.IsAutomaticPositioningEnabled = !enabled;

        _touchPanel.DragWindowHandle.Visibility = dataContext.IsAutomaticPositioningEnabled ? Visibility.Hidden : Visibility.Visible;
        _touchPanel.ResizeGrip.Visibility = dataContext.IsAutomaticPositioningEnabled ? Visibility.Hidden : Visibility.Visible;

        Properties.Settings.Default.IsAutomaticPositioningEnabled = dataContext.IsAutomaticPositioningEnabled;
        Properties.Settings.Default.Save();
    }

    private void automaticPortConnecting_Click(object sender, RoutedEventArgs e)
    {
        var dataContext = (MainWindowViewModel)DataContext;
        var enabled = !dataContext.IsAutomaticPortConnectingEnabled;
        dataContext.IsAutomaticPortConnectingEnabled = !enabled;
        Properties.Settings.Default.IsAutomaticPortConnectingEnabled = dataContext.IsAutomaticPortConnectingEnabled;
        Properties.Settings.Default.Save();
    }

    private void exitWithSinmai_Click(object sender, RoutedEventArgs e)
    {
        var dataContext = (MainWindowViewModel)DataContext;
        var enabled = !dataContext.IsExitWithSinmaiEnabled;
        dataContext.IsExitWithSinmaiEnabled = !enabled;
        Properties.Settings.Default.IsExitWithSinmaiEnabled = dataContext.IsExitWithSinmaiEnabled;
        Properties.Settings.Default.Save();
    }

    private async void buttonInstallComPort_Click(object sender, RoutedEventArgs e)
    {
        await comPortManager.InstallComPort();
    }

    private async void buttonUninstallComPorts_Click(object sender, RoutedEventArgs e)
    {
        await comPortManager.UninstallVirtualPorts();
    }

    private void buttonListComPorts_Click(object sender, RoutedEventArgs e)
    {
        var output = comPortManager.GetInstalledPorts();
        var dataContext = (MainWindowViewModel)DataContext;
        MessageBox.Show(string.Join("\n", output), dataContext.TxtCurrentlyInstalledPorts);
    }

    private void instructionsLabel_Click(object sender, RoutedEventArgs e)
    {
        ShowSetupInstructionsDialog();
    }

    private void emulateRingButtons_Click(object sender, RoutedEventArgs e)
    {
        var dataContext = (MainWindowViewModel)DataContext;
        var enabled = !dataContext.IsRingButtonEmulationEnabled;
        dataContext.IsRingButtonEmulationEnabled = !enabled;
        Properties.Settings.Default.IsRingButtonEmulationEnabled = dataContext.IsRingButtonEmulationEnabled;
        Properties.Settings.Default.Save();
        _touchPanel.SetEmulateRingButton(dataContext.IsRingButtonEmulationEnabled);
    }
}