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

namespace EMIS.DataLogic.GraduationManage.GraduationRequirement
{
    public class CourseTypeRequirementDAL
    {
        public GraduationCourseTypeRequirementRepository GraduationCourseTypeRequirementRepository { get; set; }
        public GrademajorRepository GrademajorRepository { get; set; }
        public FacultymajorRepository FacultymajorRepository { get; set; }
        public CollegeRepository CollegeRepository { get; set; }
        public SchoolyearRepository SchoolyearRepository { get; set; }

        /// <summary>
        /// 查询对应的毕业课程类型学分信息View
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<CourseTypeRequirementView> GetGradCourseTypeRequirementQueryable(Expression<Func<ER_GraduationCourseTypeRequirement, bool>> exp)
        {
            var query = from gct in GraduationCourseTypeRequirementRepository.GetList(exp)
                        join gr in GrademajorRepository.Entities
                        on gct.GrademajorID equals gr.GrademajorID
                        join fa in FacultymajorRepository.Entities
                        on gr.FacultymajorID equals fa.FacultymajorID
                        join col in CollegeRepository.Entities
                        on fa.CollegeID equals col.CollegeID
                        join sye in SchoolyearRepository.Entities
                        on
                        new { SchoolyearID = gr.GradeID.Value, SchoolcodeID = gr.SemesterID.Value }
                        equals
                        new { SchoolyearID = sye.Years, SchoolcodeID = sye.SchoolcodeID }
                        into tempsyenter
                        from syenter in tempsyenter.DefaultIfEmpty()
                        select new CourseTypeRequirementView
                        {
                            GraduationCourseTypeRequirementID = gct.GraduationCourseTypeRequirementID,
                            GrademajorID = gct.GrademajorID,
                            GrademajorCode = gr.Code,
                            GrademajorName = gr.Name,
                            FacultymajorID = gr.FacultymajorID,
                            FacultymajorNo = fa.Code,
                            FacultymajorName = fa.Name,
                            CollegeID = fa.CollegeID,
                            CollegeNo = col.No,
                            CollegeName = col.Name,
                            SchoolyearID = gr.GradeID,
                            SchoolcodeID = gr.SemesterID,
                            EnteringSchoolYearID = syenter.SchoolyearID,
                            EnteringSchoolYearCode = syenter.Code,
                            GraduatingSemesterID = gr.CF_Schoolyear.SchoolyearID,
                            GraduatingSemesterCode = gr.CF_Schoolyear.Code,
                            StandardID = fa.StandardID,
                            EducationID = fa.EducationID,
                            LearningformID = fa.LearningformID,
                            LearnSystem = fa.LearnSystem,
                            CourseTypeID = gct.CourseTypeID,
                            TotalCredit = gct.TotalCredit,
                            RecordStatus = gct.RecordStatus,
                            CreateUserID = gct.CreateUserID,
                            CreateTime = gct.CreateTime,
                            ModifyUserID = gct.ModifyUserID,
                            ModifyTime = gct.ModifyTime
                        };

            return query;
        }

    }
}