using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using TeamAAS.Communication.LightSources;

namespace Plugins.Standard.Core
{
    public class LightModelConverter : StringConverter
    {
        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) => true;

        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
        {
            var values = new List<string>();
            foreach (LightModel model in Enum.GetValues(typeof(LightModel)))
            {
                var field = typeof(LightModel).GetField(model.ToString());
                var attr = field?.GetCustomAttributes(typeof(DescriptionAttribute), false)
                    .OfType<DescriptionAttribute>()
                    .FirstOrDefault();
                values.Add(attr?.Description ?? model.ToString());
            }
            return new StandardValuesCollection(values);
        }

        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) =>
            sourceType == typeof(string) || sourceType == typeof(LightModel);

        public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
        {
            if (value is LightModel lm) return lm;
            if (value is string str)
            {
                foreach (LightModel model in Enum.GetValues(typeof(LightModel)))
                {
                    var field = typeof(LightModel).GetField(model.ToString());
                    var attr = field?.GetCustomAttributes(typeof(DescriptionAttribute), false)
                        .OfType<DescriptionAttribute>()
                        .FirstOrDefault();
                    if (attr?.Description == str || model.ToString() == str)
                        return model;
                }
            }
            return LightModel.KCS_KDC_12V60W_4T;
        }

        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) =>
            destinationType == typeof(string) || destinationType == typeof(LightModel);

        public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
        {
            if (destinationType == typeof(LightModel) && value is string str)
                return ConvertFrom(context, culture, str);
            if (destinationType == typeof(string) && value is LightModel model)
            {
                var field = typeof(LightModel).GetField(model.ToString());
                var attr = field?.GetCustomAttributes(typeof(DescriptionAttribute), false)
                    .OfType<DescriptionAttribute>()
                    .FirstOrDefault();
                return attr?.Description ?? model.ToString();
            }
            return value;
        }
    }
}