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

namespace EMISOnline.DataLogic.Educational
{
    public class CourseWareDAL
    {
        public GrademajorRepository GrademajorRepository { get; set; }
        public ExecutablePlanRepository ExecutablePlanRepository { get; set; }
        public CoursematerialRepository CoursematerialRepository { get; set; }
        public CourseChapterRepository CourseChapterRepository { get; set; }
        public CourseVideoRepository CourseVideoRepository { get; set; }
        public UserRepository UserRepository { get; set; }
        public CourseChapter_VideoRepository CourseChapter_VideoRepository { get; set; }
             
        public IQueryable<CourseWareView> GetCourseWareList()
        {
            var query = from cv in CourseVideoRepository.Entities
                        //join ep in ExecutablePlanRepository.Entities on gm.GrademajorID equals ep.GrademajorID
                        //join cm in CoursematerialRepository.Entities on ep.CoursematerialID equals cm.CoursematerialID
                        //join cc in CourseChapterRepository.Entities on cm.CoursematerialID equals cc.CoursematerialID
                        //join ccv in CourseChapter_VideoRepository.Entities on cc.CourseChapterID equals ccv.CourseChapterID
                        //join cv in CourseVideoRepository.Entities on ccv.CourseVideoID equals cv.CourseVideoID
                        join u in UserRepository.Entities on cv.CreateUserID equals u.UserID
                        select new CourseWareView
                        {
                            CourseVideoID = cv.CourseVideoID,
                            GrademajorName = "",
                            CoursematerialName = "",
                            CourseVideoName = cv.Name,
                            CreateUserName = u.Name,
                            CreateTime = cv.CreateTime
                        };

            return query;
        }
    }
}