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

namespace EMISOnline.DataLogic.Educational
{
    public class CourseDAL
    {
        public CoursematerialRepository CoursematerialRepository { get; set; }
        public ExecutablePlanRepository ExecutablePlanRepository { get; set; }
        public ExecutablePlanTeachingSettingRepository ExecutablePlanTeachingSettingRepository { get; set; }
        public DictionaryItemRepository DictionaryItemRepository { get; set; }

        public IQueryable<CoursematerView> GetCourseList()
        {
            var query = from com in CoursematerialRepository.Entities
                        //join exp in ExecutablePlanRepository.Entities on com.CoursematerialID equals exp.CoursematerialID into expResult
                        //from expr in expResult.DefaultIfEmpty()
                        //join expSet in ExecutablePlanTeachingSettingRepository.Entities on expr.ExecutablePlanID equals expSet.ExecutablePlanID into expSetResult
                        //from expSetr in expSetResult.DefaultIfEmpty()
                        //join dic in DictionaryItemRepository.Entities.Where(d => d.DictionaryCode == (typeof(CF_CourseQuality).Name)) on expr.CourseQualityID equals dic.Value into dicItem
                        //from di in dicItem.DefaultIfEmpty()
                        select new CoursematerView
                        {
                            CoursematerialID = com.CoursematerialID,
                            CourseCode=com.CourseCode,
                            CourseName = com.CourseName,
                            //CourseQualityID = expr.CourseQualityID,
                            //CourseQualityName = di.Name,
                            //Credit = expSetr.Credit,
                            //Hours = expSetr.TheoryCourse ?? 0 + expSetr.Practicehours ?? 0 + expSetr.Trialhours ?? 0,
                            CreateTime = com.CreateTime
                        };

            return query;
        }
        /// <summary>
        /// 获取课程信息
        /// </summary>
        /// <returns></returns>
        public IQueryable<CoursematerView> GetCoursematerialViewQueryable()
        {
            var query = from a in CoursematerialRepository.Entities
                        select new CoursematerView
                        {
                            CoursematerialID = a.CoursematerialID,
                            ClassGroupingID = a.ClassGroupingID,
                            CourseCode = a.CourseCode,
                            CourseName = a.CourseName,
                            Abbreviation = a.Abbreviation,
                            EnglishName = a.EnglishName,
                            StandardName = a.StandardName,
                            CourseEdition = a.CourseEdition,
                            CourseSynopsis = a.CourseSynopsis,
                            CourseReserve = a.CourseReserve,
                            IsEnable = a.IsEnable ?? true,
                            IsEnableName = a.IsEnable == true ? "是" : "否",
                            CourseLevelID = a.CourseLevelID,
                            CourseScienceID = a.CourseScienceID,
                            CreateUserID = a.CreateUserID,
                            CreateTime = a.CreateTime,
                            Remarks = a.Remarks
                        };
            return query;
        }
    }
}