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

namespace EMISOnline.DataLogic.ExamSetting
{
    public class ExamSettingDAL
    {
        public onlinetestRepository OnlinetestRepository { get; set; }
        public paperRepository PaperRepository { get; set; }
        public StudentRepository StudentRepository { get; set; }
        public ExamResultRepository ExamResultRepository { get; set; }
        public ExamineeAnswerRepository ExamineeAnswerRepository { get; set; }

        public IQueryable<test_onlinetest> GetOnlinetestList(Expression<Func<test_onlinetest, bool>> testExpression)
        {
            var query = from c in OnlinetestRepository.Entities.Where(testExpression)
                        select c;

            return query.AsQueryable();
        }
        public IQueryable<test_onlinetest> GetStudentOnlinetestList(Expression<Func<test_onlinetest, bool>> testExpression,string UserID)
        {
            var query = from c in OnlinetestRepository.Entities.Where(testExpression)
                        //join r in ExamResultRepository.Entities on c.onlinetest_id equals r.onlinetest_id
                        //where r.user_id == UserID
                        select c;

            return query.AsQueryable();
        }

        public IQueryable<test_paper> GetPaperList(Expression<Func<test_paper, bool>> testExpression)
        {
            var query = from paper in PaperRepository.Entities.Where(testExpression)
                        where paper.test_paper_parent_id == 0 || paper.test_paper_parent_id == null
                        select paper;
            return query.AsQueryable();
        }

        public IQueryable<CF_Student> GetExamUsers(decimal testid)
        {
            var query = from student in StudentRepository.Entities
                        select student;
            return query.Take(10);
        }
        public ExamResult GetExam(string userid, decimal test_id)
        {
            //var query = from test in ExamResultRepository.Entities
            //            where test.onlinetest_id == test_id
            //            where test.user_id == userid
            //            select test;
            var query = ExamResultRepository.UnitOfWork.Set<ExamResult>().Include("test_onlinetest").Where(q=>q.onlinetest_id==test_id&&q.user_id==userid);
            return query.SingleOrDefault();
        }
    }
}