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

namespace HH.WMS.Entitys.Enums
{
    public static class EnumExtensions
    {
        /// <summary>
        /// 获取特性 (DescriptionAttribute) 的说明；如果未使用该特性，则返回枚举的名称。
        /// </summary>
        /// <param name="enumValue"></param>
        /// <returns></returns>
        public static string GetDescription(this Enum enumValue)
        {
            FieldInfo fieldInfo = enumValue.GetType().GetField(enumValue.ToString());
            DescriptionAttribute[] attrs =
                fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false) as DescriptionAttribute[];

            return attrs.Length > 0 ? attrs[0].Description : enumValue.ToString();
        }

        public static string GetName(this Enum enumValue)
        {
            return enumValue.ToString();
        }

        public static T GetEnumByName<T>(string name)
        {
            try
            {
                name = name.Trim();
                var enumValue = (T)Enum.Parse(typeof(T), name);
                return enumValue;
            }catch(Exception){
                return (T)Enum.Parse(typeof(T), "ERROR"); ;
            }
            
        }
    }
}