using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using EMIS.DataLogic.Repositories;
using EMIS.Entities;
using EMIS.ViewModel;
using EMIS.ViewModel.EnrollManage.SpecialtyManage;

namespace EMIS.DataLogic.EnrollManage.SpecialtyManage
{
    public class SpecialtyDAL
    {
        public SpecialtyRepository SpecialtyRepository { get; set; }
        public DictionaryItemRepository DictionaryItemRepository { get; set; }

        /// <summary>
        /// 查询对应的专业信息View
        /// </summary>
        /// <param name="expSpecialty"></param>
        /// <returns></returns>
        public IQueryable<SpecialtyView> GetSpecialtyViewQueryable(Expression<Func<CF_Specialty, bool>> expSpecialty)
        {
            var query = from spe in SpecialtyRepository.GetList(expSpecialty)
                        join stan in DictionaryItemRepository.GetList(x => x.DictionaryCode == DictionaryItem.CF_Standard.ToString())
                        on spe.StandardID equals stan.Value into tempstan
                        from dtstan in tempstan.DefaultIfEmpty()
                        select new SpecialtyView
                        {
                            SpecialtyID = spe.SpecialtyID,
                            StandardID = spe.StandardID,
                            StandardCode = dtstan.Code,
                            StandardName = dtstan.Name,
                            EducationID = spe.EducationID,
                            LearningformID = spe.LearningformID,
                            LearnSystem = spe.LearnSystem,
                            ScienceclassID = spe.ScienceclassID,
                            PropertyID = spe.PropertyID,
                            StandardTitle = spe.StandardTitle,
                            StandardLevel = spe.StandardLevel,
                            RecordStatus = spe.RecordStatus,
                            Remark = spe.Remark,
                            CreateUserID = spe.CreateUserID,
                            CreateTime = spe.CreateTime,
                            ModifyUserID = spe.ModifyUserID,
                            ModifyTime = spe.ModifyTime,
                        };

            return query;
        }

        /// <summary>
        /// 查询专业信息中专业名称（去重）
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<SpecialtyView> GetStandardViewQueryable(Expression<Func<CF_Specialty, bool>> exp)
        {
            var query = from spe in SpecialtyRepository.GetList(exp)
                        join dtstan in DictionaryItemRepository.GetList(x => x.DictionaryCode == DictionaryItem.CF_Standard.ToString())
                        on spe.StandardID equals dtstan.Value
                        select new SpecialtyView
                        {
                            StandardID = spe.StandardID,
                            StandardCode = dtstan.Code,
                            StandardName = dtstan.Name
                        };

            return query.Distinct();
        }

        /// <summary>
        /// 查询专业信息中学制信息（去重）
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<SpecialtyView> GetLearnSystemViewQueryable(Expression<Func<CF_Specialty, bool>> exp)
        {
            var query = from spe in SpecialtyRepository.GetList(exp)
                        select new SpecialtyView
                        {
                            LearnSystem = spe.LearnSystem
                        };

            return query.Distinct();
        }

    }
}