AipGateway/AipGateway.API.Domain/Common/Extensions/EnumExtensions.cs

using System.ComponentModel;

namespace AipGateway.API.Domain.Common.Extensions
{
    public class EnumModel
    {
        public int Value { get; set; }
        public string? Name { get; set; }
        public string? Description { get; set; }

        public EnumModel(int iD, string? name, string? description)
        {
            Value = iD;
            Name = name;
            Description = description;
        }

    }

    public static class EnumExtensions
    {
        public static IEnumerable<EnumModel> ToList<T>() where T : struct, IConvertible
        {
            if (!typeof(T).IsEnum)
                return null;

            var values = Enum.GetValues(typeof(T)).Cast<T>();
            return values.Select(x => new EnumModel(Convert.ToInt32(x), x.ToString(), x.GetDescription()));

        }
        public static T ToEnum<T>(this string enumDescription) where T : struct, IConvertible
        {
            Enum.TryParse(enumDescription, true, out T result);
            return result;
        }
        public static T ToEnum<T>(this int enumValue) where T : struct, IConvertible
        {
            return Enum.Parse<T>(enumValue.ToString(), true);
        }
        public static string GetDescription<T>(this T enumValue) where T : struct, IConvertible
        {
            if (!typeof(T).IsEnum)
                return null;

            var description = enumValue.ToString();
            var fieldInfo = enumValue.GetType().GetField(enumValue.ToString() ?? string.Empty);

            if (fieldInfo != null)
            {
                var attrs = fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (attrs != null && attrs.Length > 0)
                {
                    description = ((DescriptionAttribute)attrs[0]).Description;
                }
            }

            return description ?? string.Empty;
        }
    }
}