using System;
using System.Diagnostics;
using System.Windows;
using System.Windows.Input;
using System.Windows.Navigation;
using System.Windows.Threading;

namespace WarframeClock
{
    /// <summary>
    /// Interaction logic for OverlayWindow.xaml
    /// </summary>
    public partial class OverlayWindow : OverlayWindowBase
    {
        private readonly OverlayWindowViewModel _vm;
        private readonly System.Windows.Forms.NotifyIcon _notifyIcon;
        private readonly DispatcherTimer _updateTimer;

        public OverlayWindow()
        {
            InitializeComponent();
            DataContext = _vm = new OverlayWindowViewModel();

            var iconMenu = new System.Windows.Forms.ContextMenu();
            iconMenu.MenuItems.Add(new System.Windows.Forms.MenuItem(App.VersionString) { Enabled = false });
            iconMenu.MenuItems.Add(new System.Windows.Forms.MenuItem("Configure",
                (_, __) => _vm.SettingsMode = true));
            iconMenu.MenuItems.Add(new System.Windows.Forms.MenuItem("Quit",
                (_, __) => ((App)Application.Current).Terminate()));

            _notifyIcon = new System.Windows.Forms.NotifyIcon
            {
                ContextMenu = iconMenu,
                Icon = Properties.Resources.TrayIcon,
                Visible = true
            };

            _updateTimer = new DispatcherTimer(TimeSpan.FromMilliseconds(100), DispatcherPriority.Background,
                UpdateTimerTick, Dispatcher.CurrentDispatcher);
            _updateTimer.Start();
        }

        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);
            _notifyIcon.Dispose();
            _updateTimer.Stop();
        }

        private void UpdateTimerTick(object sender, EventArgs e)
        {
            _vm.RefreshOverlayText();
            _notifyIcon.Text = $"Warframe Clock - {_vm.OverlayText}";

            AdjustOverlay();
        }

        private void Hyperlink_RequestNavigate(object sender, RequestNavigateEventArgs e)
        {
            Process.Start(e.Uri.AbsoluteUri);
        }

        private void DoneSettingsButton_Click(object sender, RoutedEventArgs e)
        {
            Settings.Save();
            _vm.SettingsMode = false;
        }

        private Point _dragOriginalPosition;
        private bool _dragStarted;
        private Point _dragOffset;

        private void OverlayLabelOverlay_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            _dragStarted = true;
            _dragOriginalPosition = OverlayLabelOverlay.TranslatePoint(new Point(0, 0), this);
            _dragOffset = e.GetPosition(this);
            ((UIElement)sender).CaptureMouse();
        }

        private void OverlayLabelOverlay_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (_dragStarted)
            {
                ((UIElement)sender).ReleaseMouseCapture();
                _dragStarted = false;
            }
        }

        private void OverlayLabelOverlay_MouseMove(object sender, MouseEventArgs e)
        {
            if (_dragStarted)
            {
                var p = e.GetPosition(this);
                var newX = _dragOriginalPosition.X + p.X - _dragOffset.X;
                if (newX <= ActualWidth / 2)
                {
                    Settings.DockToX = Settings.AlignmentX.Left;
                    Settings.MarginX = newX;
                }
                else
                {
                    Settings.DockToX = Settings.AlignmentX.Right;
                    Settings.MarginX = ActualWidth - newX - OverlayLabelOverlay.ActualWidth;
                }
                var newY = _dragOriginalPosition.Y + p.Y - _dragOffset.Y;
                if (newY <= ActualHeight / 2)
                {
                    Settings.DockToY = Settings.AlignmentY.Top;
                    Settings.MarginY = newY;
                }
                else
                {
                    Settings.DockToY = Settings.AlignmentY.Bottom;
                    Settings.MarginY = ActualHeight - newY - OverlayLabelOverlay.ActualHeight;
                }

                _vm.RefreshPosition();
            }
        }

        private void FontSettingsButton_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new System.Windows.Forms.FontDialog
            {
                Font = new System.Drawing.Font(
                    new System.Drawing.FontFamily(Settings.FontFamilyName),
                    (float) (Settings.FontSize * 72.0 / 96.0))
            };
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                Settings.FontFamilyName = dialog.Font.FontFamily.Name;
                Settings.FontSize = dialog.Font.SizeInPoints / 72.0 * 96.0;
                _vm.RefreshFont();
            }
        }
    }
}