using MESClassLibrary.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MESClassLibrary.BLL.Log;
using System.Reflection;
using System.Data;
using MESClassLibrary.DAL.User;

namespace MESClassLibrary.BLL.User
{
    public class Sys_NavMenuService
    {
        /// <summary>
        /// 根据userID查询用户菜单
        /// </summary>
        /// <param name="userID"></param>
        /// <returns></returns>
        public List<Sys_NavMenuInfo> BuilderLeftMenu(string userID)
        {
            try
            {
                List<Sys_NavMenuInfo> returnList = new List<Sys_NavMenuInfo>();
                Sys_NavMenuData dal = new Sys_NavMenuData();
                DataTable dt = new DataTable();
                List<Sys_NavMenuInfo> navList = new List<Sys_NavMenuInfo>();

                dt = dal.BuilderLeftMenu(userID);
                navList = Tool.ConvertTo<Sys_NavMenuInfo>(dt).ToList<Sys_NavMenuInfo>();

                foreach (Sys_NavMenuInfo item in navList)
                {
                    Sys_NavMenuInfo menuItem = BuilderItem(item, navList);
                    if (menuItem != null)
                        returnList.Add(menuItem);

                }
                return returnList;
            }
            catch(Exception ex)
            {
                LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return null;
            }
        }

        /// <summary>
        /// 生成菜单list
        /// </summary>
        /// <param name="powers"></param>
        /// <param name="item"></param>
        /// <param name="allItem"></param>
        /// <returns></returns>
        public Sys_NavMenuInfo BuilderItem(Sys_NavMenuInfo item, List<Sys_NavMenuInfo> allItem)
        {
            Sys_NavMenuInfo returnItem = new Sys_NavMenuInfo();
            returnItem.ItemPic = item.ItemPic;
            returnItem.MenuID = item.MenuID;
            returnItem.MenuName = item.MenuName;
            returnItem.OrderNum = item.OrderNum;
            returnItem.ParentMenuID = item.ParentMenuID;
            returnItem.PowerID = item.PowerID;
            returnItem.URLStr = item.URLStr;

            List<Sys_NavMenuInfo> subItemList = new List<Sys_NavMenuInfo>();

            StringBuilder sb = new StringBuilder();
            List<Sys_NavMenuInfo> subList = allItem.FindAll(p => p.ParentMenuID == item.MenuID);
            if (subList.Count > 0)
            {
                foreach (Sys_NavMenuInfo subItem in subList.OrderBy(p => p.OrderNum))
                {
                    returnItem.SubNavMenuList.Add(subItem);
                }
            }
            if (returnItem.SubNavMenuList.Count == 0)
                return null;
            else
                return returnItem;
        }
    }
}