using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.DataLogic.Repositories;
using System.Linq.Expressions;
using EMIS.Entities;
using EMIS.ViewModel.CalendarManage;
using Bowin.Common.DataTime;

namespace EMIS.DataLogic.Common.CalendarManage
{
    public class SchoolYearDAL
    {
        public SchoolyearRepository schoolyearRepository { get; set; }

        public DictionaryItemRepository dictionaryItemRepository { get; set; }

        /// <summary>
        /// 读取学年学期信息
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<SchoolYearView> GetSchoolYearQueryable(Expression<Func<CF_Schoolyear, bool>> exp)
        {
            var query = from a in schoolyearRepository.GetList(exp)
                        join c in dictionaryItemRepository.Entities on new { a.SchoolcodeID, DictionaryCode = "CF_Semester" }
                         equals new { SchoolcodeID = c.Value.Value, c.DictionaryCode } into gbsta
                        from gicbsta in gbsta.DefaultIfEmpty()
                        select new SchoolYearView
                        {
                            SchoolYearID = a.SchoolyearID,
                            Code = a.Code,
                            Years = a.Years,
                            SchoolcodeID = a.SchoolcodeID,
                            SchoolcodeName = gicbsta.Name,
                            FullName = a.Years.ToString() + "学年" + gicbsta.Name,
                            WeeksNum = a.WeeksNum,
                            FirstWeek = (DateTime)a.FirstWeek,
                            IsCurrent = a.IsCurrent,
                            Current = a.IsCurrent == true ? "是" : "否",
                            WeekDays = a.WeekDays,
                            CreateUserID = a.CreateUserID,
                            CreateTime = a.CreateTime,
                            Value = a.Value
                        };
            return query;
        }

        public IQueryable<SchoolYearView> GetYearsQueryable(Expression<Func<CF_Schoolyear, bool>> exp)
        {
            var query = from a in schoolyearRepository.GetList(exp).Distinct()
                        
                        select new SchoolYearView
                        {
                            Years = a.Years,
                            
                        };
            return query;
        }
    }
}