using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
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.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using Tango.SharedUI.Controls;

namespace Tango.PPC.Common.Controls
{
    [ContentProperty(nameof(Elements))]
    public class ImageGalleryControl : Control
    {
        private NavigationControl _navigationControl;
        private DispatcherTimer _timer;

        public int SelectedIndex
        {
            get { return (int)GetValue(SelectedIndexProperty); }
            set { SetValue(SelectedIndexProperty, value); }
        }
        public static readonly DependencyProperty SelectedIndexProperty =
            DependencyProperty.Register("SelectedIndex", typeof(int), typeof(ImageGalleryControl), new PropertyMetadata(0));

        public ObservableCollection<FrameworkElement> Elements
        {
            get { return (ObservableCollection<FrameworkElement>)GetValue(ElementsProperty); }
            set { SetValue(ElementsProperty, value); }
        }
        public static readonly DependencyProperty ElementsProperty =
            DependencyProperty.Register("Elements", typeof(ObservableCollection<FrameworkElement>), typeof(ImageGalleryControl), new PropertyMetadata(null));

        public Duration Duration
        {
            get { return (Duration)GetValue(DurationProperty); }
            set { SetValue(DurationProperty, value); }
        }
        public static readonly DependencyProperty DurationProperty =
            DependencyProperty.Register("Duration", typeof(Duration), typeof(ImageGalleryControl), new PropertyMetadata(new Duration(TimeSpan.FromSeconds(2))));


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

        public ImageGalleryControl()
        {
            Elements = new ObservableCollection<FrameworkElement>();
            Loaded += ImageGalleryControl_Loaded;

            _timer = new DispatcherTimer();
            _timer.Tick += _timer_Tick;
        }

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

            _navigationControl = GetTemplateChild("navigationControl") as NavigationControl;
        }

        private void ImageGalleryControl_Loaded(object sender, RoutedEventArgs e)
        {
            if (_navigationControl != null)
            {
                _navigationControl.Elements = Elements;

                _timer.Interval = Duration.TimeSpan;

                if (!DesignerProperties.GetIsInDesignMode(new DependencyObject()))
                {
                    _timer.Start();
                }
            }
        }

        private void _timer_Tick(object sender, EventArgs e)
        {
            if (SelectedIndex < Elements.Count - 1)
            {
                SelectedIndex++;
            }
            else
            {
                SelectedIndex = 0;
            }
        }

        protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
        {
            base.OnPreviewMouseDown(e);
            _timer.Stop();
        }

        protected override void OnPreviewMouseUp(MouseButtonEventArgs e)
        {
            base.OnPreviewMouseUp(e);
            _timer.Start();
        }
    }
}