using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using System.Windows.Media.Imaging;

namespace ivf_tl_Operate.Converts
{
    public class PicImageSourceConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            try
            {
                if (values.Count() != 2)
                {
                    if (parameter.ToString() == "1")
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/LastEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }
                    else
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/NextEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }

                }
                var a = values[0];
                var b = values[1];
                if (a == null || b == null)
                {
                    if (parameter.ToString() == "1")
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/LastEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }
                    else
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/NextEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }
                }
                int currentNum = int.Parse(a.ToString());
                int allNum = int.Parse(b.ToString());
                if (parameter.ToString() == "1")
                {
                    if (currentNum > 0)
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/LastEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }
                    else
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/LastEmbryoDiscard.png", UriKind.RelativeOrAbsolute));
                    }
                }
                else
                {
                    if (currentNum < (allNum - 1))
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/NextEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                    }
                    else
                    {
                        return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/NextEmbryoDiscard.png", UriKind.RelativeOrAbsolute));
                    }
                }
            }
            catch (Exception)
            {
                if (parameter.ToString() == "1")
                {
                    return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/LastEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                }
                else
                {
                    return new BitmapImage(new Uri("pack://application:,,,/ivf_tl_Operate;component/Resources/Image/NextEmbryoUsable.png", UriKind.RelativeOrAbsolute));
                }
            }
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}