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

namespace YLErp.Enums
{
    [Flags]
    public enum BuySellEnum
    {
        None = 0,

        /// <summary>
        /// 买入
        /// </summary>
        Buy = 1 << 0,

        /// <summary>
        /// 卖出
        /// </summary>
        Sell = 1 << 1,

        /// <summary>
        /// 全部
        /// </summary>
        All = Buy | Sell
    }

    public static class BuySellUtil
    {
        /// <summary>
        /// 获取枚举描述
        /// </summary>
        public static string GetDesc(BuySellEnum type)
        {
            return InnerGetDesc(type);
        }

        private static string InnerGetDesc(BuySellEnum type)
        {
            switch (type)
            {
                case BuySellEnum.Buy:
                    return "买入";
                case BuySellEnum.Sell:
                    return "卖出";
                default:
                    break;
            }

            var nt = (int)type;
            var list = new List<string>(2);

            for (var i = 0; i <= 1; i++)
            {
                if ((nt & (1 << i)) > 0)
                {
                    type = (BuySellEnum)(1 << i);
                    list.Add(InnerGetDesc(type));
                }
            }

            return string.Join(",", list);
        }
    }
}