using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.DataLogic.Repositories;
using EMIS.ViewModel.SchedulingManage.SchedulingSettings;
using System.Linq.Expressions;
using EMIS.ViewModel.CalendarManage;
using EMIS.Entities;

namespace EMIS.DataLogic.SchedulingManage.SchedulingSettings
{
    public class CourseTimeHoursDAL 
    {
        public CoursesTimeRepository coursesTimeRepository { get; set; }

        public DictionaryItemRepository dictionaryItemRepository { get; set; }

        public CourseTimeHoursRepository courseTimeHoursRepository { get; set; }

        /// <summary>
        /// 读取课程课时类别信息
        /// </summary>
        /// <param name="exp"></param>
        /// <returns></returns>
        public IQueryable<CourseTimeHoursView> GetCoursesTimeQueryable(Expression<Func<EM_CoursesTime, bool>> exp, Expression<Func<TP_CourseTimeHours, bool>> exps)
        {
            var query = from a in coursesTimeRepository.GetList(exp)
                        join b in courseTimeHoursRepository.GetList(exps) on a.CoursesTimeID equals b.CoursesTimeID 
                        join c in dictionaryItemRepository.Entities on new { a.TimesSegment, DictionaryCode = "CF_TimesSegment" }
                        equals new { TimesSegment = c.Value.Value, c.DictionaryCode } into gbsta
                        from gicbsta in gbsta.DefaultIfEmpty()
                        select new CourseTimeHoursView
                        {
                            CoursesTimeID = a.CoursesTimeID,
                            StartTimes = a.StartTimes,
                            EndTimes = a.EndTimes,
                            TimesSegment = a.TimesSegment,
                            TimesSegmentName = gicbsta.Name,
                            StartHour = a.StartHour,
                            StartMinutes = a.StartMinutes,
                            EndHour = a.EndHour,
                            EndMinutes = a.EndMinutes,
                            CourseTimeHoursID=b.CourseTimeHoursID,
                            Year = b.Years,
                            Hours=b.Hours
                        };
                return query;
                        
        }
    }
}