using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMISOnline.Entities;
using EMISOnline.DataLogic.Repositories;
using System.Linq.Expressions;
using EMISOnline.ViewModel.Educational;
using EMISOnline.ViewModel;

namespace EMISOnline.DataLogic.Educational
{
    public class FacultymajorDAL
    {
        public CollegeRepository CollegeRepository { get; set; }
        public FacultymajorRepository FacultymajorRepository { get; set; }
        public DictionaryItemRepository DictionaryItemRepositoryy { get; set; }

        public IQueryable<FacultymajorView> GetFacultymajorList()
        {
            var query = from fam in FacultymajorRepository.Entities 
                        join col in CollegeRepository.Entities on fam.CollegeID equals col.CollegeID 
                        join dic0 in DictionaryItemRepositoryy.Entities.Where(d => d.DictionaryCode == (typeof(CF_Standard).Name)) on fam.StandardID equals dic0.Value into standard
                        from std in standard.DefaultIfEmpty()
                        join dic1 in DictionaryItemRepositoryy.Entities.Where(d => d.DictionaryCode == (typeof(CF_Education).Name)) on fam.EducationID equals dic1.Value into education
                        from edn in education.DefaultIfEmpty()
                        join dic2 in DictionaryItemRepositoryy.Entities.Where(d => d.DictionaryCode == (typeof(CF_Learningform).Name)) on fam.LearningformID equals dic2.Value into learningform
                        from learn in learningform.DefaultIfEmpty()
                        select new FacultymajorView
                        {
                            FacultymajorID = fam.FacultymajorID,
                            Code = fam.Code,
                            FacultymajorName = fam.Name,
                            StandardID = fam.StandardID,
                            StandardName = std.Name,
                            LearnSystem = fam.LearnSystem,
                            EducationID = fam.EducationID,
                            EducationName = edn.Name,
                            LearningformID = fam.LearningformID,
                            LearningformName = learn.Name,
                            CollegeID = col.CollegeID,
                            CollegeCode = col.No,
                            CollegeName = col.Name,
                            CreateTime = fam.CreateTime
                        };

            return query;
        }
    }
}