using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Tango.Visuals
{
    /// <summary>
    /// Interaction logic for MetroWindowControl.xaml
    /// </summary>
    //[ContentProperty("RealContent")]
    public partial class MetroWindowControl : ContentControl
    {
        private Window _window;
        private bool _preventNextWindowMove;
        private Grid PART_MainGrid;
        private Thumb PART_ThumbMove;
        private Button PART_ButtonClose;
        private Button PART_ButtonMaximize;
        private Button PART_ButtonMinimize;
        private Thumb PART_ThumbResizeRight;
        private Thumb PART_ThumbResizeBottom;
        private Thumb PART_ThumbResizeBottomRight1;
        private Thumb PART_ThumbResizeBottomRight2;

        static MetroWindowControl()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(MetroWindowControl), new FrameworkPropertyMetadata(typeof(MetroWindowControl)));
        }

        public bool ShowCloseButton
        {
            get { return (bool)GetValue(ShowCloseButtonProperty); }
            set { SetValue(ShowCloseButtonProperty, value); }
        }
        public static readonly DependencyProperty ShowCloseButtonProperty =
            DependencyProperty.Register("ShowCloseButton", typeof(bool), typeof(MetroWindowControl), new PropertyMetadata(true));

        public bool ShowMaximizeButton
        {
            get { return (bool)GetValue(ShowMaximizeButtonProperty); }
            set { SetValue(ShowMaximizeButtonProperty, value); }
        }
        public static readonly DependencyProperty ShowMaximizeButtonProperty =
            DependencyProperty.Register("ShowMaximizeButton", typeof(bool), typeof(MetroWindowControl), new PropertyMetadata(true));

        public bool ShowMinimizeButton
        {
            get { return (bool)GetValue(ShowMinimizeButtonProperty); }
            set { SetValue(ShowMinimizeButtonProperty, value); }
        }
        public static readonly DependencyProperty ShowMinimizeButtonProperty =
            DependencyProperty.Register("ShowMinimizeButton", typeof(bool), typeof(MetroWindowControl), new PropertyMetadata(true));

        public Brush TitleBackground
        {
            get { return (Brush)GetValue(TitleBackgroundProperty); }
            set { SetValue(TitleBackgroundProperty, value); }
        }
        public static readonly DependencyProperty TitleBackgroundProperty =
            DependencyProperty.Register("TitleBackground", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public Brush TitleInactiveBackground
        {
            get { return (Brush)GetValue(TitleInactiveBackgroundProperty); }
            set { SetValue(TitleInactiveBackgroundProperty, value); }
        }
        public static readonly DependencyProperty TitleInactiveBackgroundProperty =
            DependencyProperty.Register("TitleInactiveBackground", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public Brush TitleForeground
        {
            get { return (Brush)GetValue(TitleForegroundProperty); }
            set { SetValue(TitleForegroundProperty, value); }
        }
        public static readonly DependencyProperty TitleForegroundProperty =
            DependencyProperty.Register("TitleForeground", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public Brush TitleControlsHoverBrush
        {
            get { return (Brush)GetValue(TitleControlsHoverBrushProperty); }
            set { SetValue(TitleControlsHoverBrushProperty, value); }
        }
        public static readonly DependencyProperty TitleControlsHoverBrushProperty =
            DependencyProperty.Register("TitleControlsHoverBrush", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public double TitleHeight
        {
            get { return (double)GetValue(TitleHeightProperty); }
            set { SetValue(TitleHeightProperty, value); }
        }
        public static readonly DependencyProperty TitleHeightProperty =
            DependencyProperty.Register("TitleHeight", typeof(double), typeof(MetroWindowControl), new PropertyMetadata(35.0));

        public Brush TitleControlsPressedBrush
        {
            get { return (Brush)GetValue(TitleControlsPressedBrushProperty); }
            set { SetValue(TitleControlsPressedBrushProperty, value); }
        }
        public static readonly DependencyProperty TitleControlsPressedBrushProperty =
            DependencyProperty.Register("TitleControlsPressedBrush", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public double TitleFontSize
        {
            get { return (double)GetValue(TitleFontSizeProperty); }
            set { SetValue(TitleFontSizeProperty, value); }
        }
        public static readonly DependencyProperty TitleFontSizeProperty =
            DependencyProperty.Register("TitleFontSize", typeof(double), typeof(MetroWindowControl), new PropertyMetadata(12.0));

        public double BlurRadius
        {
            get { return (double)GetValue(BlurRadiusProperty); }
            set { SetValue(BlurRadiusProperty, value); }
        }
        public static readonly DependencyProperty BlurRadiusProperty =
            DependencyProperty.Register("BlurRadius", typeof(double), typeof(MetroWindowControl), new PropertyMetadata(10.0));

        public Brush BorderInactiveBrush
        {
            get { return (Brush)GetValue(BorderInactiveBrushProperty); }
            set { SetValue(BorderInactiveBrushProperty, value); }
        }
        public static readonly DependencyProperty BorderInactiveBrushProperty =
            DependencyProperty.Register("BorderInactiveBrush", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public Brush BorderActiveBrush
        {
            get { return (Brush)GetValue(BorderActiveBrushProperty); }
            set { SetValue(BorderActiveBrushProperty, value); }
        }
        public static readonly DependencyProperty BorderActiveBrushProperty =
            DependencyProperty.Register("BorderActiveBrush", typeof(Brush), typeof(MetroWindowControl), new PropertyMetadata(null));

        public bool AllowResize
        {
            get { return (bool)GetValue(AllowResizeProperty); }
            set { SetValue(AllowResizeProperty, value); }
        }
        public static readonly DependencyProperty AllowResizeProperty =
            DependencyProperty.Register("AllowResize", typeof(bool), typeof(MetroWindowControl), new PropertyMetadata(true));

        public DataTemplate TitleTemplate
        {
            get { return (DataTemplate)GetValue(TitleTemplateProperty); }
            set { SetValue(TitleTemplateProperty, value); }
        }
        public static readonly DependencyProperty TitleTemplateProperty =
            DependencyProperty.Register("TitleTemplate", typeof(DataTemplate), typeof(MetroWindowControl), new PropertyMetadata(null));
        public FrameworkElement RealContent
        {
            get { return (FrameworkElement)GetValue(RealContentProperty); }
            set { SetValue(RealContentProperty, value); }
        }
        public static readonly DependencyProperty RealContentProperty =
            DependencyProperty.Register("RealContent", typeof(FrameworkElement), typeof(MetroWindowControl), new PropertyMetadata(null));

        public MetroWindowControl()
        {
            //this.Loaded += MetroWindowControl_Loaded;
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();

            if (DesignerProperties.GetIsInDesignMode(this)) return;

            _window = Window.GetWindow(this);

            if (_window == null) throw new InvalidOperationException("MetroWindowControl must be nested inside a window.");

            _window.WindowStyle = WindowStyle.None;
            _window.ResizeMode = ResizeMode.NoResize;

            PART_MainGrid = GetTemplateChild(nameof(PART_MainGrid)) as Grid;
            PART_ThumbMove = GetTemplateChild(nameof(PART_ThumbMove)) as Thumb;
            PART_ButtonMinimize = GetTemplateChild(nameof(PART_ButtonMinimize)) as Button;
            PART_ButtonMaximize = GetTemplateChild(nameof(PART_ButtonMaximize)) as Button;
            PART_ButtonClose = GetTemplateChild(nameof(PART_ButtonClose)) as Button;
            PART_ThumbResizeRight = GetTemplateChild(nameof(PART_ThumbResizeRight)) as Thumb;
            PART_ThumbResizeBottom = GetTemplateChild(nameof(PART_ThumbResizeBottom)) as Thumb;
            PART_ThumbResizeBottomRight1 = GetTemplateChild(nameof(PART_ThumbResizeBottomRight1)) as Thumb;
            PART_ThumbResizeBottomRight2 = GetTemplateChild(nameof(PART_ThumbResizeBottomRight2)) as Thumb;

            if (_window.AllowsTransparency == true)
            {
                PART_MainGrid.Margin = new Thickness(BlurRadius / 2);
                _window.Background = Brushes.Transparent;
            }

            _window.StateChanged += _window_StateChanged;

            this.BorderBrush = null;

            PART_ThumbMove.MouseDoubleClick += OnMoveThumbDoubleClick;
            PART_ThumbMove.DragDelta += OnTitleThumbMove;
            PART_ButtonMinimize.Click += OnMinimizeClick;
            PART_ButtonMaximize.Click += OnMaximizeRestoreClick;
            PART_ButtonClose.Click += OnCloseClick;
            PART_ThumbResizeRight.DragDelta += OnRightThumbResize;
            PART_ThumbResizeBottom.DragDelta += OnBottomThumbResize;
            PART_ThumbResizeBottomRight1.DragDelta += OnRightBottomThumbResize;
            PART_ThumbResizeBottomRight2.DragDelta += OnRightBottomThumbResize;
        }

        private void OnTitleThumbMove(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
        {
            if (_preventNextWindowMove)
            {
                _preventNextWindowMove = false;
                return;
            }

            _window.Left += e.HorizontalChange;
            _window.Top += e.VerticalChange;
        }

        private void OnRightThumbResize(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
        {
            _window.Width += e.HorizontalChange;
        }

        private void OnBottomThumbResize(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
        {
            _window.Height += e.VerticalChange;
        }

        private void OnRightBottomThumbResize(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
        {
            _window.Width += e.HorizontalChange;
            _window.Height += e.VerticalChange;
        }

        private void OnMoveThumbDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (!ShowMaximizeButton) return;

            _preventNextWindowMove = true;

            if (_window.WindowState == WindowState.Normal)
            {
                _window.WindowState = WindowState.Maximized;
            }
            else if (_window.WindowState == WindowState.Maximized)
            {
                _window.WindowState = WindowState.Normal;
            }
        }

        private void _window_StateChanged(object sender, EventArgs e)
        {
            if (_window.WindowState == WindowState.Maximized)
            {
                PART_MainGrid.Margin = new Thickness();
            }
            else if (_window.WindowState == WindowState.Normal)
            {
                if (_window.AllowsTransparency == true)
                {
                    PART_MainGrid.Margin = new Thickness(5);
                }
            }
        }

        private void OnCloseClick(object sender, RoutedEventArgs e)
        {
            _window.Close();
        }

        private void OnMaximizeRestoreClick(object sender, RoutedEventArgs e)
        {
            if (_window.WindowState == WindowState.Normal)
            {
                _window.WindowState = WindowState.Maximized;
            }
            else if (_window.WindowState == WindowState.Maximized)
            {
                _window.WindowState = WindowState.Normal;
            }
        }

        private void OnMinimizeClick(object sender, RoutedEventArgs e)
        {
            _window.WindowState = WindowState.Minimized;
        }
    }
}