using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.DataLogic.Repositories;
using EMIS.ViewModel.MinorManage.MinorPlanManage;
using EMIS.Entities;
using System.Linq.Expressions;
using EMIS.ViewModel.Students;

namespace EMIS.DataLogic.MinorManage.MinorPlanManage
{
     
     public class MinorSpecialtyDAL
    {
         public GrademinorRepository GrademinorRepository { get; set; }
         public UserRepository UserRepository { get; set; }
         public CollegeRepository CollegeRepository { get; set; }
         public SchoolyearRepository SchoolyearRepository { get; set; }
         public StudentMinorRegistRepository studentMinorRegistRepository { get; set; }
         public StudentRepository studentRepository { get; set; }
         public ClassmajorRepository classmajorRepository { get; set; }
         public GrademajorRepository grademajorRepository { get; set; }
         public FacultymajorRepository facultymajorRepository { get; set; }
         public CollegeRepository collegeRepository { get; set; }

         public IQueryable<MinorSpecialtyView> GetMinorSpecialtyViewQueryable(Expression<Func<CF_Grademinor, bool>> exp)
        {
            var query = from Grademinor in GrademinorRepository.GetList(exp)
                        join User in UserRepository.Entities on Grademinor.CreateUserID equals User.UserID into user
                        from u in user.DefaultIfEmpty()
                        join College in CollegeRepository.Entities on Grademinor.CollegeID equals College.CollegeID
                        join schoolYear in SchoolyearRepository.Entities on Grademinor.SchoolyearID equals schoolYear.SchoolyearID
                        select new MinorSpecialtyView
                        {
                            GrademinorID=Grademinor.GrademinorID,
                            GradeMinorApplicationID = Grademinor.GrademinorApplicationID,
                            YearID = Grademinor.YearID,
                            SchoolyearID = Grademinor.SchoolyearID,
                            SchoolyearCode=schoolYear.Code,
                            StandardID = Grademinor.StandardID,
                            CollegeID = Grademinor.CollegeID,
                            CollegeName = College.Name,
                            CollegeNo = College.No,
                            StudentLimit = Grademinor.StudentLimit,
                            OpenStatus = Grademinor.RecordStatus,
                            CreateUserID = Grademinor.CreateUserID,
                            CreateTime = Grademinor.CreateTime,
                            CreateUserName = u.Name,
                            StudentCount = Grademinor.EM_StudentMinorRegist.GroupBy(x => x.UserID).Count(),
                        };
            return query;
        }

         public IQueryable<StudentsView> GetStudentsQueryable(Expression<Func<EM_StudentMinorRegist, bool>> exp)
         {
             var query = from stumrr in studentMinorRegistRepository.GetList(exp)
                         group stumrr by stumrr.UserID
                         into gstu
                         join user in UserRepository.Entities
                         on gstu.Key equals user.UserID
                         join stu in studentRepository.Entities
                         on gstu.Key equals stu.UserID
                         join cla in classmajorRepository.Entities
                         on stu.ClassmajorID equals cla.ClassmajorID
                         join gra in grademajorRepository.Entities
                         on cla.GrademajorID equals gra.GrademajorID
                         join fac in facultymajorRepository.Entities
                         on gra.FacultymajorID equals fac.FacultymajorID
                         join col in collegeRepository.Entities
                         on fac.CollegeID equals col.CollegeID
                         select new StudentsView
                         {
                             CollegeID = col.CollegeID,
                             CollegeName = col.Name,
                             CollegeCode = col.No,
                             GradeMajorID = gra.GrademajorID,
                             GradeMajorCode = gra.Code,
                             GradeMajorName = gra.Name,
                             ClassMajorID = cla.GrademajorID,
                             ClassMajorName = cla.Name,
                             ClassMajorCode = cla.No,
                             LoginID = user.LoginID,
                             UserName = user.Name,
                             UserID = user.UserID,
                         };
             return query;
         }
    }
}