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

namespace EMIS.DataLogic.ExamManage
{
    public class LevelSettingSubjectDAL
    {
        public LevelSettingRepository levelSettingRepository { get; set; }
        public ExaminationProjectRepository examinationProjectRepository { get; set; }
        public ExaminationTypeRepository examinationTypeRepository { get; set; }
        public LevelSettingSubjectRepository levelSettingSubjectRepository { get; set; }
        public DictionaryItemRepository dictionaryItemRepository { get; set; }
        public ProjectScoreRepository projectScoreRepository { get; set; }
        public ExaminationProjectSubjectRepository examinationProjectSubjectRepository { get; set; }

        public IQueryable<LevelSettingView> GetLevelSettingView(Expression<Func<EX_ExaminationProject, bool>> erexp)
        {
            var query = from level in levelSettingRepository.Entities
                        from epr in examinationProjectRepository.Entities.Where(erexp).Where(x => x.ExaminationProjectID == level.ExaminationProjectID)
                        from etr in examinationTypeRepository.Entities.Where(x => x.ExaminationTypeID == epr.ExaminationTypeID)
                        select new LevelSettingView
                        {
                            LevelSettingID = level.LevelSettingID,
                            LevelName = level.LevelName,
                            ExaminationProjectID = level.ExaminationProjectID,
                            ExaminationProjectName = epr.Name,
                            ExaminationTypeID = epr.ExaminationTypeID,
                            ExaminationTypeName = etr.Name,
                            IsPassed = level.IsPassed,
                            IsPassedEdit = level.IsPassed.Value,
                            IsPassLine = level.IsPassLine,
                            IsPassLineEdit = level.IsPassLine.Value,
                            RecordStatus = level.RecordStatus,
                        };
            return query;
        }

        public IQueryable<LevelSettingSubjectView> GetLevelSettingSubjectViewByLevelID(Guid? levelSettingID)
        {
            var query = from level in levelSettingRepository.Entities.Where(x => x.LevelSettingID == levelSettingID)
                        from lssr in levelSettingSubjectRepository.Entities.Where(x => x.LevelSettingID == level.LevelSettingID)
                        from epr in examinationProjectRepository.Entities.Where(x => x.ExaminationProjectID == level.ExaminationProjectID)
                        from etr in examinationTypeRepository.Entities.Where(x => x.ExaminationTypeID == epr.ExaminationTypeID)
                        select new LevelSettingSubjectView
                        {
                            LevelSettingID = level.LevelSettingID,
                            ExaminationSubjectID = lssr.ExaminationSubjectID,
                            PassScore = lssr.PassScore
                        };
            return query;
        }

        public LevelSettingView GetLevelSettingSubjectView(Guid? levelSettingID)
        {
            var query = from level in levelSettingRepository.Entities.Where(x => x.LevelSettingID == levelSettingID)
                        from epr in examinationProjectRepository.Entities.Where(x => x.ExaminationProjectID == level.ExaminationProjectID)
                        from etr in examinationTypeRepository.Entities.Where(x => x.ExaminationTypeID == epr.ExaminationTypeID)
                        select new LevelSettingView
                        {
                            LevelSettingID = level.LevelSettingID,
                            LevelName = level.LevelName,
                            ExaminationProjectID = level.ExaminationProjectID,
                            ExaminationProjectName = epr.Name,
                            ExaminationTypeID = epr.ExaminationTypeID,
                            ExaminationTypeName = etr.Name,
                            IsPassed = level.IsPassed,
                            IsPassedEdit = level.IsPassed.Value,
                            IsPassLine = level.IsPassLine,
                            IsPassLineEdit = level.IsPassLine.Value,
                            RecordStatus = level.RecordStatus,
                        };
            return query.FirstOrDefault();
        }

        public IQueryable<LevelSettingSubjectView> GetLevelSettingSubjectViewByProjectID(Guid? examinationProjectID)
        {
            var query = from dic in dictionaryItemRepository.Entities.Where(x => x.DictionaryCode == "EX_ExaminationSubject")
                        select new LevelSettingSubjectView
                        {
                            ExaminationSubjectID = dic.Value,            
                        };
            if (examinationProjectID.HasValue)
            {
                query = from level in levelSettingRepository.Entities.Where(x => x.ExaminationProjectID == examinationProjectID)
                        from lssr in levelSettingSubjectRepository.Entities.Where(x => x.LevelSettingID == level.LevelSettingID)
                        select new LevelSettingSubjectView
                        {
                            LevelSettingID = level.LevelSettingID,
                            ExaminationSubjectID = lssr.ExaminationSubjectID,
                            PassScore = lssr.PassScore
                        };
            }
            return query.Distinct();
        }
    }
}