using Store.Product.Models.Product.Image;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Store.Product.Models.Product
{
    /// <summary>
    /// 主图集合
    /// </summary>
    public class MainImageCollection : List<ProductImage>
    {
        /// <summary>
        /// 随机排序
        /// </summary>
        public void RandomSort()
        {
            Random random = new Random();
            List<ProductImage> newList = new List<ProductImage>();
            foreach (ProductImage item in this.Take(4))
            {
                newList.Insert(random.Next(newList.Count + 1), item);
            }
            if (this.Count == 5)
            {
                newList.Add(this.Last());
            }
            this.Clear();
            this.AddRange(newList);
        }
    }
}