using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using CP.Cache;
using CP.Dapper;
using CP.Model;
using CP.Model.ZiXun;
using CP.Model.ZiXun.Entity;
using CP.Model.ZiXun.Query;
using Dapper;

namespace CP.Business.ZiXun
{
    public class NewManager : DbHelper
    {
        /// 缓存
        /// </summary>
        static WMCache cache = WMCache.GetCacheService();


        /// <summary>
        /// 获取新闻,资讯数据
        /// </summary>
        /// <param name="query"></param>
        /// <returns></returns>
        public List<newManagerModels> GetNewManagerList(NewManagerTopQuery query)
        {
            var list = new List<newManagerModels>();
            query.NewsTypeList.ForEach(p =>
            {
                string key = "NewManagerList" + (int)p;
                var data = cache.GetObject<List<newManagerModels>>(key);
                if (data == null)
                {
                    var listAll = cache.GetObject<List<newManagerModels>>(CacheKeys.NewManagerListList);
                    if (listAll == null)
                    {
                        listAll = GetAll(query.TopNumber);
                        cache.AddObject(CacheKeys.NewManagerListList, listAll, (int)CacheTime.NewManager);
                    }
                    data = listAll.Where(q => q.menuId == (int)p).ToList().OrderByDescending(q => q.createTime).ToList();
                    cache.AddObject(key, data, (int)CacheTime.NewManager);
                }
                list = list.Concat(data).ToList();
            });
            return list;
        }

        private List<newManagerModels> GetAll(int topNumber)
        {
            var sql = string.Empty;
            DynamicParameters Parameters = new DynamicParameters();
            FieldInfo[] enumFields = typeof(NewManagerTypeEnum).GetFields();    //获取字段信息对象集合  
            var typeList = new List<int>();
            //遍历集合  
            foreach (FieldInfo field in enumFields)
            {
                if (!field.IsSpecialName)
                {
                    typeList.Add(Convert.ToInt32(field.GetRawConstantValue()));

                }
            }

            typeList.ForEach(p =>
            {
                sql += $"SELECT * FROM (SELECT TOP {topNumber}  * FROM newManagerModels WHERE menuId = @menuId{typeList.IndexOf(p)} ORDER BY createTime DESC ) tem ";
                Parameters.Add("menuId" + typeList.IndexOf(p), p);
                if (typeList.IndexOf(p) != typeList.Count - 1)
                    sql += " UNION ";
            });
            return db.FindList<newManagerModels>(sql, Parameters).ToList();
        }

        /// <summary>
        /// 得到公告
        /// </summary>
        /// <returns></returns>
        public NewList GetNewList()
        {
            string key = CacheKeys.NewList;
            var data = cache.GetObject<NewList>(key);
            if (data == null || data.ID <= 0)
            {
                string sql = $"" +
                $"SELECT TOP 1 [ID],[title],[description],[menuId],[createTime],[createUserName] FROM [dbo].[newManagerModels] " +
                $"WHERE menuId = @menuId AND isDelete = 0 ORDER BY createTime DESC ";

                var list = db.FindList<NewList>(sql, new { menuId = 108 }).ToList();
                data = list.Count > 0 ? list[0] : new NewList();
                cache.AddObject(key, data, (int)CacheTime.NewManager);
            }
            return data;
        }
    }
}