using System;
using System.Collections.Generic;
using System.Linq;
using MySystem.Models;

namespace MySystem
{
    public class AdvertismentDbconn
    {
        public readonly static AdvertismentDbconn Instance = new AdvertismentDbconn();

        #region 获取列表
        public List<Advertisment> GetList(string ColId)
        {
            string key = "AdvertismentList:" + ColId;
            List<Advertisment> list = new List<Advertisment>();
            if (RedisDbconn.Instance.Exists(key))
            {
                list = RedisDbconn.Instance.GetList<Advertisment>(key);
                if (list.Count > 0)
                {
                    return list;
                }
            }
            List<Advertisment> newlist = new List<Advertisment>();
            WebCMSEntities db = new WebCMSEntities();
            var mysqllist = db.Advertisment.Where(m => m.ColId == ColId).OrderByDescending(m => m.Sort).OrderByDescending(m => m.Id).ToList();
            if (mysqllist.Count > 0)
            {
                foreach (var sub in mysqllist)
                {
                    newlist.Add(sub);
                }
                RedisDbconn.Instance.Clear(key);
                foreach (Advertisment sub in newlist)
                {
                    RedisDbconn.Instance.AddRightList(key, sub);
                }
            }
            db.Dispose();
            return newlist;
        }
        #endregion
    }
}