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;

namespace CtrEditor.Convertidores
{
    public class PixelToMeter
    {
        // Instancia privada estática, parte del patrón Singleton
        private static PixelToMeter? _instance;
        public UnitConverter calc = new UnitConverter(0.01f);

        // Propiedad pública estática para acceder a la instancia
        public static PixelToMeter Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = new PixelToMeter();
                }
                return _instance;
            }
        }
    }

    public class MeterToPixelConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            float meters = (float)value;
            float factor = 1;
            if (parameter != null)
                if (parameter.ToString() == "0.5") factor = 0.5f;
                else if (parameter.ToString() == "-0.5") factor = -0.5f;
                else if (parameter.ToString() == "1.5") factor = 1.5f;

            return PixelToMeter.Instance.calc.MetersToPixels(meters) * factor;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            float pixels = (float)value;
            float factor = 1;
            if (parameter != null)
                if (parameter.ToString() == "0.5") factor = 0.5f;
                else if (parameter.ToString() == "-0.5") factor = -0.5f;
                else if (parameter.ToString() == "1.5") factor = 1.5f;

            return PixelToMeter.Instance.calc.PixelsToMeters(pixels) * factor;
        }
    }

    public class DistanceToMarginConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is double distance)
            {
                return new Thickness(0, 0, 0, PixelToMeter.Instance.calc.MetersToPixels((float)distance)); // Ajustar Bottom a 'distance'
            }
            return new Thickness();
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotSupportedException("ConvertBack is not supported.");
        }
    }

    public class FloatToFormattedStringConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is float floatValue)
            {
                return floatValue.ToString("0.00", culture); // Formatear a dos decimales
            }
            return value; // Devolver el valor original si no es un float
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is string stringValue && float.TryParse(stringValue, NumberStyles.Float, culture, out float result))
            {
                return result;
            }
            return value; // Devolver el valor original si no se puede convertir
        }
    }

    public class UnitConverter
    {
        // La escala representa cuántos metros hay en un píxel
        public float Scale { get; private set; }


        public UnitConverter(float scale)
        {
            if (scale <= 0)
                throw new ArgumentException("Scale must be greater than zero.");

            Scale = scale;
        }

        // Convierte una distancia en metros a píxeles
        public float MetersToPixels(float meters)
        {
            return meters / Scale;
        }

        // Convierte una distancia en píxeles a metros
        public float PixelsToMeters(float pixels)
        {
            return pixels * Scale;
        }

        // Configurar o ajustar la escala
        public void SetScale(float newScale)
        {
            if (newScale <= 0)
                throw new ArgumentException("Scale must be greater than zero.");

            Scale = newScale;
        }
    }
}