using System;
using System.Collections.Generic;
using System.Text;
using wms.dto.response.sx;
using wms.service.Help.LayerPacking.model;

namespace wms.service.Help.LayerPacking
{
    /// <summary>
    /// 比较产品
    /// </summary>
    public class CompareProduct : IEqualityComparer<LayerPackingProduct>
    {
        /// <summary>
        /// 比较产品
        /// </summary>
        /// <param name="x"></param>
        /// <param name="y"></param>
        /// <returns></returns>
        public bool Equals(LayerPackingProduct x, LayerPackingProduct y)
        {
            if (ReferenceEquals(x, y)) return true;
            if (x == null || y == null) return false;

            return string.Equals(x.ContGrpBarCode, y.ContGrpBarCode, StringComparison.Ordinal);
        }

        /// <summary>
        /// 获取产品哈希码
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public int GetHashCode(LayerPackingProduct obj)
        {
            if (obj?.ContGrpBarCode == null) return 0;

            // 使用更好的哈希算法，减少碰撞
            unchecked
            {
                int hash = 17;
                hash = hash * 31 + obj.ContGrpBarCode.GetHashCode();
                return hash;
            }
        }
    }
}