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

namespace EMIS.DataLogic.Common.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 a in SpecialtyRepository.GetList(expSpecialty)
                        join b in DictionaryItemRepository.GetList(x => x.DictionaryCode == DictionaryItem.CF_Standard.ToString())
                        on a.StandardID equals b.Value into temp
                        from standard in temp.DefaultIfEmpty()
                        select new SpecialtyView 
                        {
                            SpecialtyID = a.SpecialtyID,
                            StandardID = a.StandardID,
                            StandardCode = standard.Code,
                            StandardName = standard.Name,
                            EducationID = a.EducationID,
                            LearningformID = a.LearningformID,
                            LearnSystem = a.LearnSystem,
                            ScienceclassID = a.ScienceclassID,
                            PropertyID = a.PropertyID,
                            StandardTitle = a.StandardTitle,
                            StandardLevel = a.StandardLevel,
                            RecordStatus = a.RecordStatus,
                            Remark = a.Remark,
                            CreateUserID = a.CreateUserID,
                            CreateTime = a.CreateTime,
                            ModifyUserID = a.ModifyUserID,
                            ModifyTime = a.ModifyTime,
                        };

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

            return query.Distinct();
        }

    }
}