using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;


namespace LiveForum.Code.Utility
{
    public static class EunmHelp
    {

        public static string FetchDescription(this Enum value)
        {
            FieldInfo fi = value.GetType().GetField(value.ToString());
            DescriptionAttribute[] attributes =
               (DescriptionAttribute[])fi.GetCustomAttributes(
               typeof(DescriptionAttribute), false);
            return (attributes.Length > 0) ? attributes[0].Description : value.ToString();
        }
        /// <summary>
        /// 获取对应的枚举描述
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static string GetEnumDescription<T>(int a) where T : Enum
        {

            var EnumDescription = "";
            Type t = typeof(T);
            Array arrays = Enum.GetValues(t);
            for (int i = 0; i < arrays.LongLength; i++)
            {
                //获取value
                T test = (T)arrays.GetValue(i);
                FieldInfo fieldInfo = test.GetType().GetField(test.ToString());
                object[] attribArray = fieldInfo.GetCustomAttributes(false);
                DescriptionAttribute attrib = (DescriptionAttribute)attribArray[0];
                if ((int)(object)test ==a)
                {
                    EnumDescription = attrib.Description;
                }
            }
            return EnumDescription;
        }
    }
}