using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.ViewModel.TeacherManagement;
using Bowin.Common.Linq;
using EMIS.DataLogic.SystemDAL;
using System.Linq.Expressions;
using EMIS.Entities;

namespace EMIS.CommonLogic.SystemServices
{
    public class UserInfoChangeServices: BaseServices, IUserInfoChangeServices
    {

        public UserInfoChangeDAL UserInfoChangeDAL { get; set; }

        public StaffView GetStaffView(Guid? userID)
        {
            var curUser = EMIS.Utility.FormValidate.CustomPrincipal.Current;
            userID = curUser.UserID;
            Expression<Func<CF_Staff, bool>> exp = x => true;
            if (userID.HasValue && userID != Guid.Empty)
            {
                exp = exp.And(x => x.UserID == userID);
            }
            var query = UserInfoChangeDAL.GetStaffViewQueryable(exp);

            return query.FirstOrDefault();
        }
    }
}