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

namespace SERVER.LIB
{
    /// <summary>
    /// 大部分方法已经弃用  
    /// </summary>
    public class HOTEL_GROUPHelp
    {
        static List<TBL_HOTEL_GROUP_INFO> data => CacheData.TBL_HOTEL_GROUP_INFO;
        static List<TBL_HOTEL_BASIC_INFO>  tBL_HOTEL_s => CacheData.TBL_HOTEL_BASIC_INFO;

        public static List<TBL_HOTEL_GROUP_INFO> Children(int data)
        {
            List<TBL_HOTEL_GROUP_INFO> res = new List<TBL_HOTEL_GROUP_INFO>();
            var resdata = CacheData.TBL_HOTEL_GROUP_INFO.Where(x => x.PARENT_ID == data).ToList();
            res.AddRange(resdata);
            foreach (var item in resdata)
            {
                res.AddRange(Children(item.HOTEL_GROUP_ID));
            }
            return res;
        }

        public static List<TBL_HOTEL_GROUP_INFO> GetTreemap(IList<HotelDataItem> dataItems)
        {
            List<TBL_HOTEL_GROUP_INFO> treemaps = new List<TBL_HOTEL_GROUP_INFO>();

            foreach (var tump in dataItems)
            {
                if (treemaps.FirstOrDefault(X => X.HOTEL_GROUP_ID == tump.HotelGroupsId) == null)
                {
                    treemaps.AddRange(Parent(tump.HotelGroupsId));
                };

            }
            return treemaps.GroupBy(x => x.HOTEL_GROUP_ID).Select(y => y.First()).ToList();
        }

        public static List<TBL_HOTEL_GROUP_INFO> Parent(int ID)
        {

            List<TBL_HOTEL_GROUP_INFO> res = new List<TBL_HOTEL_GROUP_INFO>();
            var item = data.Single(x => x.HOTEL_GROUP_ID == ID);
            res.Add(item);
            if (item.PARENT_ID != 0)
            {
                res.AddRange(Parent(item.PARENT_ID));
            }
            return res.GroupBy(x => x.HOTEL_GROUP_ID).Select(y => y.First()).ToList();
        }


        public static List<TBL_HOTEL_BASIC_INFO> GetHotels(List<HotelsItem> hoteldata, int GroupId)
        {
            List<TBL_HOTEL_BASIC_INFO> res = new List<TBL_HOTEL_BASIC_INFO>();
           var Group = Children(GroupId);
            foreach (var item in Group)
            {
                res.AddRange(GetHotels(item.HOTEL_GROUP_ID).Where(x=> hoteldata.FirstOrDefault(y=>y.HotelId == x.IDOLD)!=null));
            }
            res = res.GroupBy(x => x.HOTEL_ID).Select(y => y.First()).ToList();
            for (int i = 0; i < res.Count; i++)
            {
                throw new Exception();
            }
            throw new Exception();

        }
        // 获取酒店组下面的所有直属酒店
        public static IEnumerable< TBL_HOTEL_BASIC_INFO > GetHotels( int GroupId)
        {
            return tBL_HOTEL_s.Where(x => x.HOTEL_GROUP == GroupId);
        }

        public static string Getgrouppath(TBL_HOTEL_BASIC_INFO hot )
        {
            string res = string.Empty;
            int group = hot.HOTEL_GROUP;
            while (true)
            {
                if(group == 0)
                {
                    break;
                }
                if (res == string.Empty)
                {
                    res += data.First(X => X.HOTEL_GROUP_ID == group).HOTEL_GROUP_NAME;
                }
                else
                {
                    res += "-";
                    res += data.First(X => X.HOTEL_GROUP_ID == group).HOTEL_GROUP_NAME;
                }
            }
            return res;
        }
    }
}