using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Integration.Observables;
using Tango.DragAndDrop;
using Tango.MachineStudio.Developer.Converters;
using Tango.MachineStudio.Developer.ViewModels;
using System.Windows.Threading;

namespace Tango.MachineStudio.Developer.Views
{
    /// <summary>
    /// Interaction logic for MainView.xaml
    /// </summary>
    public partial class MainView : UserControl
    {
        private MainViewVM _vm;
        private DispatcherTimer _jobBrushTimer;

        public DraggingSurface DraggingSurface
        {
            get { return (DraggingSurface)GetValue(DraggingSurfaceProperty); }
            set { SetValue(DraggingSurfaceProperty, value); }
        }
        public static readonly DependencyProperty DraggingSurfaceProperty =
            DependencyProperty.Register("DraggingSurface", typeof(DraggingSurface), typeof(MainView), new PropertyMetadata(null));

        public MainView()
        {
            InitializeComponent();

            DraggingSurface = draggingSurface;
            this.Loaded += (x, y) =>
            {
                _vm = DataContext as MainViewVM;
            };

            chkGraphs.Checked += (x, y) => { graphRowDefinition.Height = new GridLength(440, GridUnitType.Pixel); };
            chkGraphs.Unchecked += (x, y) => { graphRowDefinition.Height = new GridLength(80, GridUnitType.Pixel); };

            _jobBrushTimer = new DispatcherTimer();
            _jobBrushTimer.Interval = TimeSpan.FromSeconds(1);
            _jobBrushTimer.Tick += _jobBrushTimer_Tick;
            _jobBrushTimer.Start();
        }

        private void _jobBrushTimer_Tick(object sender, EventArgs e)
        {
            if (_vm != null && _vm.SelectedJob != null)
            {
                List<Segment> segments = new List<Segment>();
                foreach (var s in _vm.SelectedJob.Segments)
                {
                    segments.Add(s);

                    if (_vm.SelectedJob.EnableInterSegment && _vm.SelectedJob.Segments.IndexOf(s) != _vm.SelectedJob.Segments.Count - 1)
                    {
                        segments.Add(new Segment()
                        {
                            Length = _vm.SelectedJob.InterSegmentLength,
                            BrushStops = new System.Collections.ObjectModel.ObservableCollection<BrushStop>()
                            {
                                new BrushStop()
                                {
                                     Color = Colors.White,
                                }
                            },
                        });
                    }
                }

                jobBrushList.ItemsSource = segments;
            }
        }

        private void OnDropAvailableSensor(object sender, DropEventArgs e)
        {
            if (e.Draggable.DataContext is Sensor)
            {
                _vm.OnDropAvailableSensor(e.Draggable.DataContext as Sensor);
            }
        }

        private void ColorPickerCombo_SelectedColorChanged(object sender, RoutedPropertyChangedEventArgs<Color?> e)
        {
            UpdateGradientBrushDisplay();
        }

        private void Offset_Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            UpdateGradientBrushDisplay();
        }

        private void UpdateGradientBrushDisplay()
        {
            if (_vm.SelectedSegment != null)
            {
                SegmentToGradientStopsConverter converter = new SegmentToGradientStopsConverter();
                GradientStopCollection stops = converter.Convert(_vm.SelectedSegment, null, null, null) as GradientStopCollection;
                gradientBrush.GradientStops = stops;
            }
            else
            {
                gradientBrush.GradientStops = new GradientStopCollection();
            }
        }

        private void OnBrushStopBorderDrop(object sender, DropEventArgs e)
        {
            if (e.Draggable.DataContext is BrushStop)
            {
                _vm.OnDropBrushStop(e.Draggable.DataContext as BrushStop, e.Droppable.DataContext as BrushStop);
            }
        }

        private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            UpdateGradientBrushDisplay();
        }
    }
}