using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.DataLogic.Repositories;
using EMIS.DataLogic.Common.Cultureplan;
using EMIS.ViewModel.SelectCourse;
using System.Linq.Expressions;
using EMIS.Entities;
using EMIS.ViewModel;

namespace EMIS.DataLogic.SelectCourse
{
    public class FreeSelectionCourseDAL
    {
        public FreeSelectionCouseRepository FreeSelectionCouseRepository { get; set; }
        public FreeSelectionCouseTeachingSettingRepository FreeSelectionCouseTeachingSettingRepository { get; set; }
        public Lazy<CoursematerialDAL> CoursematerialDAL { get; set; }
        public DictionaryItemRepository DictionaryItemRepository { get; set; }

        public IQueryable<FreeSelectionCourseView> GetFreeSelectionCourseViewQueryable(Expression<Func<EM_FreeSelectionCouse, bool>> exp)
        {
            var query = from fsc in FreeSelectionCouseRepository.GetList(exp)
                        join fscts in FreeSelectionCouseTeachingSettingRepository.Entities on fsc.FreeSelectionCouseID equals fscts.FreeSelectionCouseID
                        join cm in CoursematerialDAL.Value.GetCoursematerialViewQueryable(x => true)
                            on fsc.CoursematerialID equals cm.CoursematerialID
                        join dicc in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_CourseCategory).Name)
                            on fsc.CourseCategoryID equals dicc.Value into ddicc
                        from edicc in ddicc.DefaultIfEmpty()
                        join dict in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_CourseType).Name)
                            on fsc.CourseTypeID equals dict.Value into ddict
                        from edict in ddict.DefaultIfEmpty()
                        join dicq in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_CourseQuality).Name)
                            on fsc.CourseQualityID equals dicq.Value into ddicq
                        from edicq in ddicq.DefaultIfEmpty()
                        join dics in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_CourseStructure).Name)
                            on fsc.CourseStructureID equals dics.Value into ddics
                        from edics in ddics.DefaultIfEmpty()
                        join disyn in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_SchoolyearNum).Name)
                            on fsc.SchoolyearNumID equals disyn.Value into ddisyn
                        from edisyn in ddisyn.DefaultIfEmpty()
                        join disc in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_Semester).Name)
                            on fsc.SchoolcodeID equals disc.Value into ddisc
                        from edisc in ddisc.DefaultIfEmpty()
                        //join dist in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_Startterm).Name)
                        //    on fsc.StarttermID equals dist.Value into ddist
                        //from edist in ddist.DefaultIfEmpty()
                        join diem in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_ExaminationMode).Name)
                            on fsc.ExaminationModeID equals diem.Value into ddiem
                        from ediem in ddiem.DefaultIfEmpty()
                        join ditl in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_Teachinglanguage).Name)
                            on fsc.TeachinglanguageID equals ditl.Value into dditl
                        from editl in dditl.DefaultIfEmpty()
                        select new FreeSelectionCourseView
                        {
                            FreeSelectionCouseID = fsc.FreeSelectionCouseID,
                            //No = fsc.No,
                            CollegeID = fsc.CF_Department.CollegeID,
                            DepartmentID = fsc.DepartmentID,
                            DepartmentName = fsc.CF_Department.Name,
                            CourseStructureID = fsc.CourseStructureID,
                            CourseStructureName = edics.Name,
                            CourseCategoryID = fsc.CourseCategoryID,
                            CourseCategoryName = edicc.Name,
                            CourseTypeID = fsc.CourseTypeID,
                            CourseTypeName = edict.Name,
                            CourseQualityID = fsc.CourseQualityID,
                            CourseQualityName = edicq.Name,
                            ExaminationModeID = fsc.ExaminationModeID,
                            ExaminationModeName = ediem.Name,
                            TeachinglanguageID = fsc.TeachinglanguageID,
                            TeachinglanguageName = editl.Name,
                            SchoolyearNumID = fsc.SchoolyearNumID,
                            SchoolyearNumName = edisyn.Name,
                            SchoolcodeID = fsc.SchoolcodeID,
                            SchoolcodeName = edisc.Name,
                            PracticeTypeID=fsc.PracticeTypeID,
                            //StarttermID = fsc.StarttermID,
                            //StarttermName = edist.Name,
                            IsEnable = (bool)fsc.IsEnable,
                            Credit = fscts.Credit??0,
                            TheoryCourse = fscts.TheoryCourse,
                            Practicehours = fscts.Practicehours,
                            Trialhours = fscts.Trialhours,
                            Totalhours=((fscts.TheoryCourse ?? 0) + (fscts.Practicehours ?? 0) + (fscts.Trialhours ?? 0)),
                            WeeklyHours = fscts.WeeklyHours,
                            WeeklyNum = fscts.WeeklyNum,
                            TheoryWeeklyNum = fscts.TheoryWeeklyNum,
                            PracticeWeeklyNum = fscts.PracticeWeeklyNum,
                            TrialWeeklyNum = fscts.TrialWeeklyNum,
                            StartWeeklyNum = fscts.StartWeeklyNum,
                            EndWeeklyNum = fscts.EndWeeklyNum,
                            CoursematerialID = cm.CoursematerialID,
                            CourseCode = cm.CourseCode,
                            CourseName = cm.CourseName,
                            CreateTime = fsc.CreateTime,
                            CreateUserID = fsc.CreateUserID,
                            ResultTypeID=fsc.ResultTypeID,
                            Remark = fsc.Remark
                        };
            return query;
        }

        public IQueryable<FreeSelectionCourseView> GetTeachingModeTypeViewQueryable(Expression<Func<EM_FreeSelectionCouse, bool>> exp)
        {
            var query = from fsc in FreeSelectionCouseRepository.GetList(exp)
                        from fsctm in fsc.EM_FreeSelectionCouseTeachingMode
                        join ditm in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_TeachingMode).Name)
                            on fsctm.TeachingModeID equals ditm.Value
                        into dditm
                        from editm in dditm.DefaultIfEmpty()
                        select new FreeSelectionCourseView
                        {
                            FreeSelectionCouseID = fsc.FreeSelectionCouseID,
                            DepartmentID = fsc.DepartmentID,
                            DepartmentName = fsc.CF_Department.Name,
                            SchoolyearNumID = fsc.SchoolyearNumID,
                            SchoolcodeID = fsc.SchoolcodeID,
                            IsEnable = (bool)fsc.IsEnable,
                            CoursematerialID = fsc.CoursematerialID,
                            TeachingModeName=editm.Name
                        };
            return query;
        }

        public IQueryable<Sys_DictionaryItem> GetTeachingModeType(Expression<Func<EM_FreeSelectionCouse, bool>> exp)
        {
            var query = from fsc in FreeSelectionCouseRepository.GetList(exp)
                        from fsctm in fsc.EM_FreeSelectionCouseTeachingMode
                        join ditm in DictionaryItemRepository.GetList(x => x.DictionaryCode == typeof(CF_TeachingMode).Name)
                            on fsctm.TeachingModeID equals ditm.Value
                        into dditm
                        from editm in dditm.DefaultIfEmpty()
                        select editm;

            return query;
        }
    }
}