using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using EMIS.Entities;
using EMIS.ViewModel;
using EMIS.ViewModel.CultureplanManage.CourseMaterial;
using EMIS.DataLogic.Repositories;

namespace EMIS.DataLogic.CultureplanManage.CourseMaterial
{
    public class TeachTypeDAL
    {
        public ClassGroupingRepository ClassGroupingRepository { get; set; }
        public ClassGroupingSettingsRepository ClassGroupingSettingsRepository { get; set; }
        public DictionaryItemRepository DictionaryItemRepository { get; set; }

        /// <summary>
        /// 查询对应的上课类型信息TeachTypeView
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<TeachTypeView> GetTeachTypeViewQueryable(Expression<Func<EM_ClassGrouping, bool>> exp)
        {
            var query = from cg in ClassGroupingRepository.GetList(exp)
                        select new TeachTypeView
                        {
                            ClassGroupingID = cg.ClassGroupingID,
                            ClassName = cg.ClassName,
                            TeachingModeIDList = cg.EM_ClassGroupingSettings.Select(x => x.TeachingModeID).ToList(),
                            Remark = cg.Remark,
                            RecordStatus = cg.RecordStatus,
                            CreateUserID = cg.CreateUserID,
                            CreateTime = cg.CreateTime,
                            ModifyUserID = cg.ModifyUserID,
                            ModifyTime = cg.ModifyTime
                        };

            return query;
        }

        /// <summary>
        /// 查询对应的上课类型分班明细信息TeachTypeSettingView（根据主表）
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<TeachTypeSettingView> GetTeachTypeSettingViewQueryable(Expression<Func<EM_ClassGrouping, bool>> exp)
        {
            var query = from dic in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_TeachingMode).Name)
                        join cgs in
                            (
                                from cg in ClassGroupingRepository.GetList(exp)
                                join cgs in ClassGroupingSettingsRepository.Entities
                                on cg.ClassGroupingID equals cgs.ClassGroupingID
                                select new
                                {
                                    ClassGroupingSettingsID = cgs.ClassGroupingSettingsID,
                                    ClassGroupingID = cgs.ClassGroupingID,
                                    ClassName = cg.ClassName,
                                    TeachingModeID = cgs.TeachingModeID,
                                    RecordStatus = cgs.RecordStatus
                                }
                            )
                        on dic.Value equals cgs.TeachingModeID into tempcgs
                        from diccgs in tempcgs.DefaultIfEmpty()
                        select new TeachTypeSettingView
                        {
                            ClassGroupingSettingsID = diccgs.ClassGroupingSettingsID == null ? Guid.Empty : diccgs.ClassGroupingSettingsID,
                            ClassGroupingID = diccgs.ClassGroupingID,
                            ClassName = diccgs.ClassName,
                            TeachingModeID = dic.Value,
                            IsDivide = diccgs.ClassGroupingSettingsID == null ? false : true,
                            IsDisplay = dic.RecordStatus > (int)SYS_STATUS.UNUSABLE ? true : false,
                            RecordStatus = diccgs.RecordStatus
                        };

            return query;
        }

    }
}