using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Bowin.Common.Linq.Entity;
using EMIS.ViewModel;
using EMIS.ViewModel.SelectCourse.SelectCourseResult;
using EMIS.DataLogic.SelectCourse.SelectCourseResult;
using EMIS.DataLogic.SystemDAL;
using EMIS.DataLogic.SelectCourse;
using EMIS.DataLogic.Common.Students;
using EMIS.CommonLogic.SystemServices;
using System.Linq.Expressions;
using EMIS.Entities;
using EMIS.DataLogic.EducationManage;
using EMIS.DataLogic.Repositories;
using EMIS.ViewModel.SelectCourse;
using System.Transactions;

namespace EMIS.CommonLogic.SelectCourse
{
    public class StudentSelectCourseServices : BaseServices, IStudentSelectCourseServices
    {
        public Lazy<IParameterServices> ParameterServices { get; set; }
        public SelectCourseResultDAL SelectCourseResultDAL { get; set; }
        public TypeSettingDAL TypeSettingDAL { get; set; }
        public OpenControlSettingDAL OpenControlSettingDAL { get; set; }
        public StudentsDAL StudentsDAL { get; set; }
        public InSchoolSettingRepository inSchoolSettingRepository { get; set; }

        /// <summary>
        /// 学生进入选课页面
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <returns></returns>
        public IGridResultSet<StudentSelectCourseView> GetStudentSelectCourseResultViewList(Guid userID, int? pageIndex, int? pageSize)
        {
            var student = StudentsDAL.StudentRepository.GetSingle(x => x.UserID == userID);
            var selectCourseResultList = this.SelectCourseResultDAL.GetStudentSelectCourseResultView(userID)
                .OrderBy(x => x.SelectCourseTypeID).ThenBy(x => x.CourseName)
                .ToGridResultSet(pageIndex, pageSize);
            var selectCourseTeacherQuery = this.SelectCourseResultDAL.GetStudentSelectCourseTeacherResultView(userID);


            if (selectCourseResultList.rows.Count <= 20)
            {
                var courseIDList = selectCourseResultList.rows.Select(x => x.SelectCourseID).ToList();
                selectCourseTeacherQuery = selectCourseTeacherQuery.Where(x => courseIDList.Contains(x.SelectCourseID));
            }
            var selectCourseTeacherList = selectCourseTeacherQuery.ToList();

            selectCourseResultList.rows.ForEach(x =>
            {
                var teacherList = selectCourseTeacherList.Where(w => w.SelectCourseID == x.SelectCourseID);
                x.TeacherNames = string.Join(",", teacherList.Select(w => w.Name));
                x.TeacherIDs = string.Join(",", teacherList.Select(w => w.UserID.ToString()));
            });

            var ExecutableFreeSelectionCouseIDList = selectCourseResultList.rows.Where(x => x.SelectCourseTypeID == (int)EM_SelectCourseType.FreeSelectionCouse).Select(x => x.ID).ToList();
            if (ExecutableFreeSelectionCouseIDList.Count > 0)
            {
                var ExecutableFreeSelectionCouseSchedulingList = SelectCourseResultDAL.GetScheduling(ExecutableFreeSelectionCouseIDList).ToList();
                var newList = GetWeekdayTimesSegmentName(ExecutableFreeSelectionCouseSchedulingList);
                selectCourseResultList.rows.ForEach(x =>
                {
                    var list = newList.Where(w => w.ID == x.ID);
                    x.WeekdayTimesSegmentName = string.Join(";", list.OrderBy(w => w.Weekday).Select(w => w.WeekdayTimesSegmentName));
                });

            }
            return selectCourseResultList;
        }

        /// <summary>
        /// 上课时间，将星期和节次合并
        /// </summary>
        /// <param name="SourceList">上课时间数据</param>
        /// <returns></returns>
        public List<ExecutableFreeSelectionCouseSchedulingView> GetWeekdayTimesSegmentName(List<ExecutableFreeSelectionCouseSchedulingView> SourceList)
        {
            List<ExecutableFreeSelectionCouseSchedulingView> newList = new List<ExecutableFreeSelectionCouseSchedulingView>();
            var idList = SourceList.Select(x => x.ID).Distinct().ToList();
            foreach (var id in idList)
            {   //循环处理每个任选课的上课时间
                var list = SourceList.Where(x => x.ID == id).ToList();
                var weekdayList = list.Select(x => x.Weekday).Distinct().ToList();
                foreach (var weekday in weekdayList)
                {   //先循环同一星期日期
                    var tmpList = list.Where(x => x.Weekday == weekday).OrderBy(x => x.StartTimes).ToList();
                    string WeekdayTimesSegmentName = tmpList.FirstOrDefault().WeekdayName + tmpList.FirstOrDefault().StartTimes;
                    var array = tmpList.Select(x => new { x.StartTimes, x.EndTimes }).ToArray();
                    for (int i = 0; i < array.Length; i++)
                    {   //将同一天的节次合并，相邻的节次用“-”将最开始节次和最后节次合并，例：1/2/3合并成“1-3”，
                        //如果不是相邻的先用逗号隔开，再用“-”合并，例：1/2/3和5/6，合并成“1-3，5-6”
                        if (i > 0 && (array[i].StartTimes > array[i - 1].EndTimes + 1))
                        {   //不相邻的先用逗号隔开，再用“-”合并
                            WeekdayTimesSegmentName += "-" + array[i - 1].EndTimes + "节," + array[i].StartTimes;
                        }
                        if (i + 1 == array.Length)
                            WeekdayTimesSegmentName += "-" + array[i].EndTimes + "节";
                    }
                    newList.Add(new ExecutableFreeSelectionCouseSchedulingView { ID = tmpList.FirstOrDefault().ID, WeekdayTimesSegmentName = WeekdayTimesSegmentName.Replace("星期", ""), Weekday = tmpList.FirstOrDefault().Weekday });
                }
            }
            return newList;
        }

        public StudentSelectCourseSummaryView GetStudentSelectCourseSummaryView(Guid userID)
        {
            StudentSelectCourseSummaryView result;
            var currentSchoolyearID = this.SelectCourseResultDAL.GetSelectCourseSchoolyear();
            //所有在校状态
            var inschoolStatusList = inSchoolSettingRepository.GetList(x => x.IsSelected == true).Select(x => x.InSchoolStatusID).ToList();
            result = new StudentSelectCourseSummaryView(this.SelectCourseResultDAL.GetStudentSelectCourseBaseView(userID));
            if (inschoolStatusList.Contains(result.InSchoolStatusID))
                result.isInSchool = true;
            else
                result.isInSchool = false;
            var typeSetting = TypeSettingDAL.GetTypeSettingView(x => x.SchoolyearID == currentSchoolyearID, (x => true));
            var openControlSetting = OpenControlSettingDAL.GetOpenControlSettingView(x => x.SchoolyearID == currentSchoolyearID, (x => true),
                (x => x.GrademajorID == result.GrademajorID)).FirstOrDefault();
            var opionalSetting = typeSetting.FirstOrDefault(x => x.SelectCourseTypeID == (int)EM_SelectCourseType.OptionalCourse);
            var freeSelectionCourseSetting = typeSetting.FirstOrDefault(x => x.SelectCourseTypeID == (int)EM_SelectCourseType.FreeSelectionCouse);
            //任选控制
            var freeSelectionCourseGradeYearSetting = SelectCourseResultDAL.FreeSelectionCourseGradeYearSettingRepository.GetSingle(x =>
                x.SchoolyearID == currentSchoolyearID && x.GradeYear == result.GrademajorYear);

            result.OptionalStartTime = (openControlSetting == null) ? (opionalSetting == null ? null : opionalSetting.StartTime) : openControlSetting.StartTime;
            result.OptionalEndTime = (openControlSetting == null) ? (opionalSetting == null ? null : opionalSetting.EndTime) : openControlSetting.EndTime;
            if (opionalSetting != null)
            {
                if (opionalSetting.StartTime > result.OptionalStartTime)
                {
                    result.OptionalStartTime = opionalSetting.StartTime;
                }
                if (opionalSetting.EndTime < result.OptionalEndTime)
                {
                    result.OptionalEndTime = opionalSetting.EndTime;
                }
            }
            result.OptionalMaxSelectCount = (openControlSetting == null) ? ((opionalSetting == null) ? 0 : opionalSetting.MaxSelectCount) : openControlSetting.MaxSelectCount;
            result.OptionalMinSelectCount = (openControlSetting == null) ? ((opionalSetting == null) ? 0 : opionalSetting.MinSelectCount) : openControlSetting.MinSelectCount;
            result.OptionalMaxCredit = (openControlSetting == null) ? ((opionalSetting == null) ? null : opionalSetting.MaxCredit) : openControlSetting.MaxCredit;
            result.OptionalMinCredit = (openControlSetting == null) ? ((opionalSetting == null) ? null : opionalSetting.MinCredit) : openControlSetting.MinCredit;

            result.FreeSelectCourseStartTime = (freeSelectionCourseGradeYearSetting == null) ? (freeSelectionCourseSetting == null ? null : freeSelectionCourseSetting.StartTime) : freeSelectionCourseGradeYearSetting.StartTime;
            result.FreeSelectCourseEndTime = (freeSelectionCourseGradeYearSetting == null) ? (freeSelectionCourseSetting == null ? null : freeSelectionCourseSetting.EndTime) : freeSelectionCourseGradeYearSetting.EndTime;
            if (freeSelectionCourseSetting != null)
            {
                if (freeSelectionCourseSetting.StartTime > result.FreeSelectCourseStartTime)
                {
                    result.FreeSelectCourseStartTime = freeSelectionCourseSetting.StartTime;
                }
                if (freeSelectionCourseSetting.EndTime < result.OptionalEndTime)
                {
                    result.FreeSelectCourseEndTime = freeSelectionCourseSetting.EndTime;
                }
            }
            result.FreeSelectCourseMaxSelectCount = (freeSelectionCourseGradeYearSetting == null) ? ((freeSelectionCourseSetting == null) ? null : freeSelectionCourseSetting.MaxSelectCount) : freeSelectionCourseGradeYearSetting.MaxSelectCount;
            result.FreeSelectCourseMinSelectCount = (freeSelectionCourseGradeYearSetting == null) ? ((freeSelectionCourseSetting == null) ? null : freeSelectionCourseSetting.MinSelectCount) : freeSelectionCourseGradeYearSetting.MinSelectCount;
            result.FreeSelectCourseMaxCredit = (freeSelectionCourseGradeYearSetting == null) ? ((freeSelectionCourseSetting == null) ? null : freeSelectionCourseSetting.MaxCredit) : freeSelectionCourseGradeYearSetting.MaxCredit;
            result.FreeSelectCourseMinCredit = (freeSelectionCourseGradeYearSetting == null) ? ((freeSelectionCourseSetting == null) ? null : freeSelectionCourseSetting.MinCredit) : freeSelectionCourseGradeYearSetting.MinCredit;
            //限选控制
            result.GrademajorStartTime = (openControlSetting == null) ? null : openControlSetting.StartTime;
            result.GrademajorEndTime = (openControlSetting == null) ? null : openControlSetting.EndTime;
            result.GrademajorMaxSelectCount = (openControlSetting == null) ? null : openControlSetting.MaxSelectCount;
            result.GrademajorMinSelectCount = (openControlSetting == null) ? null : openControlSetting.MinSelectCount;
            result.GrademajorMaxCredit = (openControlSetting == null) ? null : openControlSetting.MaxCredit;
            result.GrademajorMinCredit = (openControlSetting == null) ? null : openControlSetting.MinCredit;

            //任选控制
            result.GradeYearStartTime = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.StartTime;
            result.GradeYearEndTime = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.EndTime;
            result.GradeYearMaxSelectCount = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.MaxSelectCount;
            result.GradeYearMinSelectCount = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.MinSelectCount;
            result.GradeYearMaxCredit = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.MaxCredit;
            result.GradeYearMinCredit = (freeSelectionCourseGradeYearSetting == null) ? null : freeSelectionCourseGradeYearSetting.MinCredit;

            return result;
        }

        /// <summary>
        /// 学生选修课程页面
        /// </summary>
        /// <param name="configuretView"></param>
        /// <param name="schoolYearID"></param>
        /// <param name="collegeID"></param>
        /// <param name="courseID"></param>
        /// <param name="courseTypeID"></param>
        /// <param name="selectCourseTypeID"></param>
        /// <param name="pageIndex"></param>
        /// <param name="pageSize"></param>
        /// <returns></returns>
        public IGridResultSet<StudentSelectCourseView> GetSelectedCourseViewList
           (ConfiguretView configuretView, Guid? schoolYearID, Guid? collegeID,
           Guid? courseID, int? courseTypeID, int? selectCourseTypeID, int pageIndex, int pageSize)
        {
            Expression<Func<EM_ExecutableOptionalCourse, bool>> eocExp = (x => true && x.CF_Student.Any(w => w.UserID == EMIS.Utility.FormValidate.CustomPrincipal.Current.UserID));
            Expression<Func<EM_ExecutableFreeSelectionCouse, bool>> efcExp = (x => true && x.CF_Student.Any(w => w.UserID == EMIS.Utility.FormValidate.CustomPrincipal.Current.UserID));

            var query = SelectCourseResultDAL.GetStudentSelectedCourseResultView(eocExp, efcExp);
            var query1 = SelectCourseResultDAL.GetSelectCourseResultTeacher(eocExp, efcExp);
            var query2 = SelectCourseResultDAL.GetSelectCourseResultTeachingMode(eocExp, efcExp);

            //if (schoolYearID.HasValue)
            //{

            //    query = query.Where(x => x.SchoolyearID == schoolYearID);
            //    query1 = query1.Where(x => x.SchoolyearID == schoolYearID);
            //}
            //if (collegeID.HasValue)
            //{
            //    query = query.Where(x => x.CollegeID == collegeID);
            //}
            //if (courseID.HasValue)
            //{
            //    query = query.Where(x => x.CoursematerialID == courseID);
            //}
            //if (courseTypeID.HasValue)
            //{
            //    query = query.Where(x => x.CourseTypeID == courseTypeID);
            //    query1 = query1.Where(x => x.CourseTypeID == courseTypeID);
            //}
            //if (selectCourseTypeID.HasValue)
            //{
            //    query = query.Where(x => x.SelectCourseType == selectCourseTypeID);
            //    query1 = query1.Where(x => x.SelectCourseType == selectCourseTypeID);
            //}


            if (!string.IsNullOrEmpty(configuretView.ConditionValue))
                query = query.DynamicWhere(configuretView.Attribute, configuretView.Condition, configuretView.ConditionValue);
            var result = query.OrderBy(x => x.SchoolYearCode).ThenBy(x => x.SelectCourseTypeID).ThenBy(x => x.CourseName).ToGridResultSet<StudentSelectCourseView>(null, null);
            var teacher = query1.ToList();
            var teachingMode = query2.ToList().OrderBy(x => x.SchoolYearCode).ThenBy(x => x.SelectCourseType).ThenBy(x => x.CourseName);
            result.rows.ForEach(x => x.TeacherNames = string.Join(",", teacher.Where(w => w.ID == x.ID).Select(w => w.TeacherName)));
            var ExecutableFreeSelectionCouseIDList = result.rows.Where(x => x.SelectCourseTypeID == (int)EM_SelectCourseType.FreeSelectionCouse).Select(x => x.ID).ToList();
            if (ExecutableFreeSelectionCouseIDList.Count > 0)
            {
                var ExecutableFreeSelectionCouseSchedulingList = SelectCourseResultDAL.GetScheduling(ExecutableFreeSelectionCouseIDList).ToList();
                var newList = GetWeekdayTimesSegmentName(ExecutableFreeSelectionCouseSchedulingList);
                result.rows.ForEach(x =>
                {
                    var list = newList.Where(w => w.ID == x.ID);
                    x.WeekdayTimesSegmentName = string.Join(";", list.OrderBy(w => w.Weekday).Select(w => w.WeekdayTimesSegmentName));
                });

            }
            return result;

        }

        public IGridResultSet<StudentSelectCourseView> GetCanceledCourseViewList
           (ConfiguretView configuretView, int pageIndex, int pageSize)
        {
            var userid = EMIS.Utility.FormValidate.CustomPrincipal.Current.UserID;
            Expression<Func<EM_ExecutableOptionalCourse, bool>> eocExp = (x => true && x.CF_Student.Any(w => w.UserID == userid
                && x.RecordStatus == (int)EMIS.ViewModel.EM_SelectCourseResultStatus.CancleCreate));
            Expression<Func<EM_ExecutableFreeSelectionCouse, bool>> efcExp = (x => true && x.CF_Student.Any(w => w.UserID == userid
                && x.RecordStatus == (int)EMIS.ViewModel.EM_SelectCourseResultStatus.CancleCreate));

            var query = SelectCourseResultDAL.GetStudentSelectedCourseResultView(eocExp, efcExp);
            var query1 = SelectCourseResultDAL.GetSelectCourseResultTeacher(eocExp, efcExp);
            var query2 = SelectCourseResultDAL.GetSelectCourseResultTeachingMode(eocExp, efcExp);


            if (!string.IsNullOrEmpty(configuretView.ConditionValue))
                query = query.DynamicWhere(configuretView.Attribute, configuretView.Condition, configuretView.ConditionValue);
            var result = query.OrderBy(x => x.SelectCourseTypeID).ToGridResultSet<StudentSelectCourseView>(null, null);
            var teacher = query1.ToList();
            var teachingMode = query2.ToList().OrderBy(x => x.SelectCourseType);
            result.rows.ForEach(x => x.TeacherNames = string.Join(",", teacher.Where(w => w.ID == x.ID).Select(w => w.TeacherName)));
            return result;

        }

        public void SelectCourse(Guid userID, Guid? grademajorID, Guid coursematerialID, int selectCourseTypeID, string teacherIDs, Guid ID)
        {
            //var teacherIDList = teacherIDs.Split(',')
            //    .Where(x => !string.IsNullOrEmpty(x))
            //    .Select(x => (Guid?)new Guid(x)).ToList();
            var isPeopleNumLimit = ParameterServices.Value.GetParameterValue<bool>(CF_ParameterType.SelectCourseNoLimit);
            var student = this.StudentsDAL.StudentRepository.GetSingle(x => x.UserID == userID, x => x.CF_Classmajor.CF_Grademajor);
            var studentSelectCourseSummary = this.GetStudentSelectCourseSummaryView(userID);
            var currentSchoolyearID = this.SelectCourseResultDAL.GetSelectCourseSchoolyear();

            var ExecutableFreeSelectionCouse = SelectCourseResultDAL.ExecutableFreeSelectionCouseRepository.GetList(x => x.SchoolyearID == currentSchoolyearID
                && x.EM_FreeSelectionCouse.CoursematerialID == coursematerialID
                && x.CF_Student.Any(w => w.UserID == userID)).FirstOrDefault();
            var ExecutableOptionalCourse = SelectCourseResultDAL.ExecutableOptionalCourseRepository.GetList(x => x.SchoolyearID == currentSchoolyearID
                && x.EM_OptionalCoursePlan.CoursematerialID == coursematerialID
                && x.CF_Student.Any(w => w.UserID == userID)).FirstOrDefault();
                        
            if (ExecutableFreeSelectionCouse != null || ExecutableOptionalCourse != null)
            {
                throw new Exception("您已报名此门课程的选修，请勿重复报名！");
            }
            var score = SelectCourseResultDAL.FinallyScoreRepository.GetSingle(x => x.UserID == userID && x.CoursematerialID == coursematerialID);
            if (score != null)
            {
                throw new Exception("您已修过此门课程，并且有考试成绩，请勿重复报名！");
            }
            //限选
            if (selectCourseTypeID == (int)EM_SelectCourseType.OptionalCourse)
            {
                if (studentSelectCourseSummary.OptionalStartTime > DateTime.Now
                    || studentSelectCourseSummary.GrademajorStartTime > DateTime.Now)
                {
                    throw new Exception("该课程还未开始选课，不能选课。");
                }
                if (studentSelectCourseSummary.OptionalEndTime < DateTime.Now
                    || studentSelectCourseSummary.GrademajorEndTime < DateTime.Now)
                {
                    throw new Exception("该课程已过选课时间，不能选课。");
                }

                if ((studentSelectCourseSummary.OptionalMaxSelectCount ?? 0) != 0
                    && (studentSelectCourseSummary.OptionalTotalSelectCount + 1) > studentSelectCourseSummary.OptionalMaxSelectCount)
                {
                    throw new Exception("选课超出了限选课门数上限，不能选课。");
                }
                using (TransactionScope ts = new TransactionScope())
                {
                    var optionalCourse = this.SelectCourseResultDAL.ExecutableOptionalCourseRepository.GetList(x =>
                        x.ExecutableOptionalCourseID == ID,
                        x => x.CF_Student,
                        x => x.EM_ExecutableOptionalCourseTeachingSetting//,
                        //x => x.EM_EducationMissionClass
                        ).FirstOrDefault();
                    if ((studentSelectCourseSummary.OptionalMaxCredit ?? 0) != 0
                        && (studentSelectCourseSummary.OptionalTotalCredit + optionalCourse.EM_ExecutableOptionalCourseTeachingSetting.Credit ?? 0)
                            > studentSelectCourseSummary.OptionalMaxCredit)
                    {
                        throw new Exception("选课超出了限选课学分上限，不能选课。");
                    }
                    if ((studentSelectCourseSummary.GrademajorMaxSelectCount ?? 0) != 0
                        && (studentSelectCourseSummary.OptionalTotalSelectCount + 1) > studentSelectCourseSummary.GrademajorMaxSelectCount)
                    {
                        throw new Exception("选课超出了该限选控制" + student.CF_Classmajor.CF_Grademajor.SemesterID + "级门数上限，不能选课。");
                    }
                    if ((studentSelectCourseSummary.GrademajorMaxCredit ?? 0) != 0
                        && (studentSelectCourseSummary.OptionalTotalCredit + optionalCourse.EM_ExecutableOptionalCourseTeachingSetting.Credit ?? 0)
                            > studentSelectCourseSummary.GrademajorMaxCredit)
                    {
                        throw new Exception("选课超出了该限选控制" + student.CF_Classmajor.CF_Grademajor.SemesterID + "级学分上限，不能选课。");
                    }

                    if (optionalCourse != null)
                    {
                        //if (optionalCourse.EM_EducationMissionClass.Count > 0)
                        //{
                        //    throw new Exception("该课程已经结束选课，并开始进行教学安排，不能选课。");
                        //}
                        if (isPeopleNumLimit == true && (optionalCourse.PeopleNumlimit ?? 0) != 0 && (optionalCourse.PeopleNumlimit ?? 0) < (optionalCourse.CF_Student.Count + 1))
                        {
                            throw new Exception("该课程选课人数已达上限，不能选课。");
                        }
                        if (!optionalCourse.CF_Student.Any(x => x.UserID == userID))
                        {
                            optionalCourse.CF_Student.Add(student);
                        }
                    }
                    else
                    {
                        throw new Exception("找不到对应的限选课程。");
                    }
                    this.UnitOfWork.Commit();
                    ts.Complete();
                }
            }
            //任选
            else if (selectCourseTypeID == (int)EM_SelectCourseType.FreeSelectionCouse)
            {
                if (studentSelectCourseSummary.FreeSelectCourseStartTime > DateTime.Now
                    || studentSelectCourseSummary.GradeYearStartTime > DateTime.Now)
                {
                    throw new Exception("该课程还未开始选课，不能选课。");
                }
                if (studentSelectCourseSummary.FreeSelectCourseEndTime < DateTime.Now
                    || studentSelectCourseSummary.GradeYearEndTime < DateTime.Now)
                {
                    throw new Exception("该课程已过选课时间，不能选课。");
                }

                //上课时间
                var schedulingList = SelectCourseResultDAL.GetSchedulingTime(ID).ToList();
                foreach (var scheduling in schedulingList)
                {
                    var repeat = SelectCourseResultDAL.GetRepeatTime(userID, ID, scheduling.CoursesTimeID, scheduling.Weekday, scheduling.SchoolyearID, scheduling.StartWeeklyNum, scheduling.EndWeeklyNum).FirstOrDefault();
                    if (repeat != null)
                    {
                        throw new Exception("此门课程的上课时间，与其它已报名选修有冲突！");
                    }
                }
                if ((studentSelectCourseSummary.FreeSelectCourseMaxSelectCount ?? 0) != 0
                        && (studentSelectCourseSummary.FreeSelectCourseTotalSelectCount + 1) > studentSelectCourseSummary.FreeSelectCourseMaxSelectCount)
                {
                    throw new Exception("选课超出了任选课门数上限，不能选课。");
                }

                if ((studentSelectCourseSummary.GradeYearMaxSelectCount ?? 0) != 0
                        && (studentSelectCourseSummary.FreeSelectCourseTotalSelectCount + 1) > studentSelectCourseSummary.GradeYearMaxSelectCount)
                {
                    throw new Exception("选课超出了该任选控制" + student.CF_Classmajor.CF_Grademajor.GradeID + "级门数上限，不能选课。");
                }
                using (TransactionScope ts = new TransactionScope())
                {
                    var freeSelectionCourse = this.SelectCourseResultDAL.ExecutableFreeSelectionCouseRepository.GetList(x =>
                        x.ExecutableFreeSelectionCouseID == ID,
                        x => x.CF_Student,
                        x => x.EM_ExecutableFreeSelectionCouseTeachingSetting//,
                        //x => x.EM_EducationMissionClass
                        ).FirstOrDefault();
                    if (freeSelectionCourse == null)
                        throw new Exception("找不到对应的任选课程。");
                    if ((studentSelectCourseSummary.FreeSelectCourseMaxCredit ?? 0) != 0
                        && (studentSelectCourseSummary.FreeSelectCourseTotalCredit + freeSelectionCourse.EM_ExecutableFreeSelectionCouseTeachingSetting.Credit ?? 0)
                            > studentSelectCourseSummary.FreeSelectCourseMaxCredit)
                    {
                        throw new Exception("选课超出了任选课学分上限，不能选课。");
                    }

                    if ((studentSelectCourseSummary.GradeYearMaxCredit ?? 0) != 0
                        && (studentSelectCourseSummary.FreeSelectCourseTotalCredit + freeSelectionCourse.EM_ExecutableFreeSelectionCouseTeachingSetting.Credit ?? 0)
                            > studentSelectCourseSummary.GradeYearMaxCredit)
                    {
                        throw new Exception("选课超出了该任选控制" + student.CF_Classmajor.CF_Grademajor.GradeID + "级学分上限，不能选课。");
                    }

                    //if (freeSelectionCourse.EM_EducationMissionClass.Count > 0)
                    //{
                    //    throw new Exception("该课程已经结束选课，并开始进行教学安排，不能选课。");
                    //}
                    if (isPeopleNumLimit == true && (freeSelectionCourse.PeopleNumlimit ?? 0) != 0 && (freeSelectionCourse.PeopleNumlimit ?? 0) < (freeSelectionCourse.CF_Student.Count + 1))
                    {
                        throw new Exception("该课程选课人数已达上限，不能选课。");
                    }
                    //上面的判断不知道有什么用暂时放着
                    if (freeSelectionCourse.PeopleNumlimit != null && (freeSelectionCourse.PeopleNumlimit < (freeSelectionCourse.CF_Student.Count + 1)))
                    {
                        throw new Exception("该课程选课人数已达上限，不能选课。");
                    }
                    if (!freeSelectionCourse.CF_Student.Any(x => x.UserID == userID))
                    {
                        freeSelectionCourse.CF_Student.Add(student);
                    }
                    this.UnitOfWork.Commit();
                    ts.Complete();
                }
            }
        }


        public void CancelSelectCourse(Guid userID, Guid? grademajorID, Guid coursematerialID, int selectCourseTypeID, string teacherIDs, Guid ID)
        {
            var teacherIDList = teacherIDs.Split(',')
                .Where(x => !string.IsNullOrEmpty(x))
                .Select(x => (Guid?)new Guid(x)).ToList();
            var student = this.StudentsDAL.StudentRepository.GetSingle(x => x.UserID == userID);
            var studentSelectCourseSummary = this.GetStudentSelectCourseSummaryView(userID);
            if (selectCourseTypeID == (int)EM_SelectCourseType.OptionalCourse)
            {
                if (studentSelectCourseSummary.OptionalStartTime > DateTime.Now
                    || studentSelectCourseSummary.GrademajorStartTime > DateTime.Now)
                {
                    throw new Exception("该课程还未开始选课，不能取消选课。");
                }
                if (studentSelectCourseSummary.OptionalEndTime < DateTime.Now
                    || studentSelectCourseSummary.GrademajorEndTime < DateTime.Now)
                {
                    throw new Exception("该课程已过选课时间，不能取消选课。");
                }
                //var optionalCourse = this.SelectCourseResultDAL.GetCurrentExecutableOptionalCourse(student.ClassmajorID, grademajorID, coursematerialID, teacherIDList)
                //    .FirstOrDefault();
                var optionalCourse = this.SelectCourseResultDAL.ExecutableOptionalCourseRepository.GetList(x =>
                    x.ExecutableOptionalCourseID == ID,
                    x => x.CF_Student,
                    x => x.EM_ExecutableOptionalCourseTeachingSetting).FirstOrDefault();

                if (optionalCourse != null)
                {
                    if (optionalCourse.RecordStatus == (int)EM_SelectCourseResultStatus.Created)
                    {
                        throw new Exception("该课程已经结束选课，并开始进行教学安排，不能取消选课。");
                    }
                    optionalCourse.CF_Student.RemoveWhere(x => x.UserID == userID);
                }
                else
                {
                    throw new Exception("找不到对应的限选课程。");
                }
            }
            else if (selectCourseTypeID == (int)EM_SelectCourseType.FreeSelectionCouse)
            {
                if (studentSelectCourseSummary.FreeSelectCourseStartTime > DateTime.Now
                    || studentSelectCourseSummary.GradeYearStartTime > DateTime.Now)
                {
                    throw new Exception("该课程还未开始选课，不能取消选课。");
                }
                if (studentSelectCourseSummary.FreeSelectCourseEndTime < DateTime.Now
                    || studentSelectCourseSummary.GradeYearEndTime < DateTime.Now)
                {
                    throw new Exception("该课程已过选课时间，不能取消选课。");
                }
                //var freeSelectionCourse = this.SelectCourseResultDAL.GetCurrentExecutableFreeSelectionCourse(coursematerialID, teacherIDList)
                //    .FirstOrDefault();
                var freeSelectionCourse = this.SelectCourseResultDAL.ExecutableFreeSelectionCouseRepository.GetList(x =>
                    x.ExecutableFreeSelectionCouseID == ID,
                    x => x.CF_Student,
                    x => x.EM_ExecutableFreeSelectionCouseTeachingSetting).FirstOrDefault();
                if (freeSelectionCourse != null)
                {
                    if (freeSelectionCourse.RecordStatus == (int)EM_SelectCourseResultStatus.Created)
                    {
                        throw new Exception("该课程已经结束选课，并开始进行教学安排，不能取消选课。");
                    }
                    freeSelectionCourse.CF_Student.RemoveWhere(x => x.UserID == userID);
                }
                else
                {
                    throw new Exception("找不到对应的任选课程。");
                }
            }

            this.UnitOfWork.Commit();
        }
    }
}