using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using Tango.Integration.Operation;

namespace Tango.PPC.UI.Converters
{
    public class MidTankLevelToElementRectConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            try
            {
                double actualHeight = (double)values[0];
                double actualWidth = (double)values[1];
                double maxLiters = (double)values[3];
                double midTankLevel = Math.Min((double)values[2], maxLiters);
                
                var offset = actualHeight - (midTankLevel / maxLiters) * actualHeight;
                return new System.Windows.Rect(1, offset, actualWidth, actualHeight);
            }
            catch
            {
                return 0d;
            }
        }

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