using RealTimeGraphEx.Components.ComponentsItems;
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.Media.Animation;
using System.Windows.Shapes;

namespace RealTimeGraphEx.Components
{
    public class YAxisTicks : ComponentBase
    {
        private Grid innerGrid;

        #region Constructors

        public YAxisTicks()
        {
            Width = 4;
            Location = ComponentLocationEnum.Left;
            this.SizeChanged += (x, y) => { Render(Graph); };
        }

        #endregion

        #region Properties

        public int SmallTicks
        {
            get { return (int)GetValue(SmallTicksProperty); }
            set { SetValue(SmallTicksProperty, value); }
        }
        public static readonly DependencyProperty SmallTicksProperty =
            DependencyProperty.Register("SmallTicks", typeof(int), typeof(YAxisTicks), new PropertyMetadata(20));

        public int BigTicks
        {
            get { return (int)GetValue(BigTicksProperty); }
            set { SetValue(BigTicksProperty, value); }
        }
        public static readonly DependencyProperty BigTicksProperty =
            DependencyProperty.Register("BigTicks", typeof(int), typeof(YAxisTicks), new PropertyMetadata(2));

        public DataTemplate SmallTickTemplate
        {
            get { return (DataTemplate)GetValue(SmallTickTemplateProperty); }
            set { SetValue(SmallTickTemplateProperty, value); }
        }
        public static readonly DependencyProperty SmallTickTemplateProperty =
            DependencyProperty.Register("SmallTickTemplate", typeof(DataTemplate), typeof(YAxisTicks), new PropertyMetadata(null));

        public DataTemplate BigTickTemplate
        {
            get { return (DataTemplate)GetValue(BigTickTemplateProperty); }
            set { SetValue(BigTickTemplateProperty, value); }
        }
        public static readonly DependencyProperty BigTickTemplateProperty =
            DependencyProperty.Register("BigTickTemplate", typeof(DataTemplate), typeof(YAxisTicks), new PropertyMetadata(null));

        #endregion

        public override void Render(RealTimeGraphExBase graph, bool animate = false)
        {
            if (graph == null) return;

            if (SmallTicks < 2) return;


            if (innerGrid == null)
            {
                innerGrid = new Grid();
            }

            double animationTime = animate ? 0.2 : 0;

            Grid grid = innerGrid;

            DoubleAnimation heightAnimation = new DoubleAnimation() { Duration = new Duration(TimeSpan.FromSeconds(animationTime)) };
            heightAnimation.To = double.IsNaN(Graph.gridLinesAndImageWrapperGrid.Height) ? Graph.gridLinesAndImageWrapperGrid.ActualHeight : Graph.gridLinesAndImageWrapperGrid.Height;


            if (!double.IsNaN(grid.Height))
            {
                grid.BeginAnimation(Grid.HeightProperty, heightAnimation);
            }
            else
            {
                grid.Height = Graph.gridLinesAndImageWrapperGrid.ActualHeight;
            }

            grid.VerticalAlignment = System.Windows.VerticalAlignment.Top;

            ThicknessAnimation marginAni = new ThicknessAnimation() { Duration = new Duration(TimeSpan.FromSeconds(animationTime)) };
            marginAni.To = new Thickness(0, Graph.gridLinesAndImageWrapperGrid.Margin.Top, 0, 0);

            if (!double.IsNaN(grid.Height))
            {
                grid.BeginAnimation(MarginProperty, marginAni);
            }
            else
            {
                grid.Margin = new Thickness(0, Graph.gridLinesAndImageWrapperGrid.Margin.Top, 0, 0);
            }

            double height = double.IsNaN(Graph.gridLinesAndImageWrapperGrid.Height) ? Graph.gridLinesAndImageWrapperGrid.ActualHeight : Graph.gridLinesAndImageWrapperGrid.Height;

            int smallTicks = (int)Math.Round((SmallTicks * (((height * 100) / Graph.gridMain.ActualHeight) / 100)), MidpointRounding.ToEven);




            this.Content = grid;
            this.ClipToBounds = true;


            grid.RowDefinitions.Clear();
            grid.Children.Clear();

            int bigTickCounter = BigTicks;

            for (int i = 0; i < smallTicks; i++)
            {
                RowDefinition rowTick = new RowDefinition();
                rowTick.Height = new GridLength(1, GridUnitType.Star);
                grid.RowDefinitions.Add(rowTick);

                if (i == bigTickCounter)
                {
                    YAxisBigTick bigTick = new YAxisBigTick();
                    bigTick.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
                    bigTick.VerticalAlignment = System.Windows.VerticalAlignment.Top;

                    if (BigTickTemplate != null)
                    {
                        bigTick.ContentTemplate = BigTickTemplate;
                    }

                    bigTickCounter += BigTicks;

                    grid.Children.Add(bigTick);
                    Grid.SetRow(bigTick, i);
                }
                else
                {

                    YAxisSmallTick smallTick = new YAxisSmallTick();
                    smallTick.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
                    smallTick.VerticalAlignment = System.Windows.VerticalAlignment.Top;

                    if (SmallTickTemplate != null)
                    {
                        smallTick.ContentTemplate = SmallTickTemplate;
                    }

                    grid.Children.Add(smallTick);
                    Grid.SetRow(smallTick, i);
                }
            }

            //Add last tick
            YAxisSmallTick lastTick = new YAxisSmallTick();
            lastTick.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
            lastTick.VerticalAlignment = System.Windows.VerticalAlignment.Bottom;

            if (SmallTickTemplate != null)
            {
                lastTick.ContentTemplate = SmallTickTemplate;
            }

            grid.Children.Add(lastTick);
            Grid.SetRow(lastTick, smallTicks - 1);
        }

        protected override void OnGraphZoomComplete(Point transformOrigin, double scaleX, double scaleY)
        {
            Render(Graph, true);
        }

        protected override void OnGraphPanningComplete(Point translate)
        {
            if (innerGrid != null)
            {
                var renderBounds = Graph.GetGraphRenderBounds();
                innerGrid.BeginAnimation(MarginProperty, null);
                innerGrid.Margin = new Thickness(0, Graph.gridLinesAndImageWrapperGrid.Margin.Top, 0, 0);
            }
        }
    }
}