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


namespace WMS.BZModels
{
    public static class Extensions
    {
        #region 获取枚举的描述
        /// <summary>
        /// 获取枚举值对应的描述
        /// </summary>
        /// <param name="enumType"></param>
        /// <returns></returns>
        public static string GetDescription(this System.Enum enumType)
        {
            var value = enumType.ToString();
            if (value.IndexOf(',') > 0)
            {
                var lists = value.Split(',');
                var strings = new List<string>();
                foreach (var item in lists)
                {
                    //var itemenum = (WCS.Entity.Protocol.Station.StationStatus)Enum.Parse(typeof(StationStatus), item);
                    FieldInfo itemEnumInfo = enumType.GetType().GetField(item.Trim());
                    if (itemEnumInfo != null)
                    {
                        DescriptionAttribute[] EnumAttributes = (DescriptionAttribute[])itemEnumInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);
                        if (EnumAttributes.Length > 0)
                        {
                            strings.Add(EnumAttributes[0].Description);
                        }
                    }
                    else
                    {
                        strings.Add(item);
                    }
                }
                return string.Join(",", strings.ToArray());
            }
            else
            {
                FieldInfo EnumInfo = enumType.GetType().GetField(enumType.ToString());
                if (EnumInfo != null)
                {
                    DescriptionAttribute[] EnumAttributes = (DescriptionAttribute[])EnumInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);
                    if (EnumAttributes.Length > 0)
                    {
                        return EnumAttributes[0].Description;
                    }
                }
                return enumType.ToString();
            }
        }

        /// <summary>
        /// 将枚举转为集合
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static List<EnumEntity> EnumToList<T>()
        {
            List<EnumEntity> list = new List<EnumEntity>();

            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity m = new EnumEntity();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.text = da.Description;
                }
                else
                {
                    m.text = e.ToString();
                }               
                m.id = Convert.ToInt32(e);

                list.Add(m);
            }
            return list;
        }

        public static List<EnumEntity2> EnumToListDesc<T>()
        {
            List<EnumEntity2> list = new List<EnumEntity2>();

            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity2 m = new EnumEntity2();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
               
                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.text = da.Description;
                    m.id = da.Description;
                }
                //else
                //{
                //    m.text = e.ToString();
                //}
                //m.id = da.Description;

                list.Add(m);
            }
            return list;
        }

        public static List<EnumEntity2> EnumToListIdDesc<T>()
        {
            List<EnumEntity2> list = new List<EnumEntity2>();

            foreach (var e in Enum.GetValues(typeof(T)))
            {
                EnumEntity2 m = new EnumEntity2();
                object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);

                if (objArr != null && objArr.Length > 0)
                {
                    DescriptionAttribute da = objArr[0] as DescriptionAttribute;
                    m.text = da.Description;
                  
                }
                //else
                //{
                //    m.text = e.ToString();
                //}
                m.id = e.ToString();

                list.Add(m);
            }
            return list;
        }
        #endregion

    }    

    /// <summary>
    /// 枚举实体
    /// </summary>
    public class EnumEntity
    {
        /// <summary>  
        /// 枚举对象的值  
        /// </summary>  
        public int id  { set; get; }  
        /// <summary>  
        /// 枚举的描述  
        /// </summary>  
        public string text { set; get; } 
                

        
    }

    public class EnumEntity2
    {
        /// <summary>  
        /// 枚举对象的值  
        /// </summary>  
        public string id { set; get; }
        /// <summary>  
        /// 枚举的描述  
        /// </summary>  
        public string text { set; get; }

        

    }
}