/// <summary>
/// 根据学生id课程id及课时id,分页查询课时单元信息
/// </summary>
/// <param name="search"></param>
/// <returns></returns>
public List <DtoLessonUnit> SelectUnitByNext(DtoLessonUnitSearch search)
{
StudentStudyBll bll = new StudentStudyBll();
//如果学生有这个课程进度
if (bll.GetProgressByStudentCourse(search.StudentID, search.CourseID) != null)
{
//获取课时单元信息数据并转换成动作对象
var list = UnitServer.SelectUnitsByNext(search).Select(u => (Yw_LessonUnitStepActions)UnitStepFactory.Create(u)).ToList();
//将数据转换成为dto模型
return(list.Select(u => new DtoLessonUnit()
{
CourseId = u.Yls_CourseId,
LessonId = u.Yls_LessonId,
Id = u.Yls_UnitId,
Index = u.Yls_UnitIndex,
Coins = u.Yls_Coins,
Steps = u.Steps,
Status = u.Yls_Status,
CreateTime = u.Yls_CreateTime,
UpdateTime = u.Yls_UpdateTime
}).ToList());
}
return(new List <DtoLessonUnit>());
}
/// <summary>
/// 学生完成课时学习后，创建课后任务
/// </summary>
public Yw_StudentTask CreateTaskAutoAfterStudy(int studentId, int lesProgressId)
{
StudentStudyBll studyBll = new StudentStudyBll();
Yw_StudentLessonProgress lesProgress = studyBll.GetStuLessonProgressById(lesProgressId);
if (lesProgress.Yle_Percent < 100 && lesProgress.Yle_SubjectCount > 0)//学生课时学习中，如果题目全部作对，就不创建课后任务
{
Yw_StudentCourseProgress progress = studyBll.GetProgressByStudentCourse(studentId, lesProgress.Yle_CourseId);
return(CreateStudyPractice(progress, studentId, lesProgress.Yle_LessonId, lesProgress.Yle_LessonIndex, lesProgressId, null, StudyTaskTypeEnum.系统课后任务));
}
return(null);
}
/// <summary>
/// 生成课后练习,根据学生已学的课程的课时，随机组题排除最近学生已经练习的题目
/// </summary>
public Yw_StudentTask GeneratePractice(int studentId, int courseId, int returnCount)
{
SubjectBll subjectBll = new SubjectBll();
StudentStudyBll studyBll = new StudentStudyBll();
Yw_StudentCourseProgress progress = studyBll.GetProgressByStudentCourse(studentId, courseId);
if (progress != null && progress.Yps_NextLessonIndex > 1)
{
List <Yw_Subject> subjects = subjectBll.GetSubjectForPractice(studentId, courseId, progress.Yps_NextLessonIndex, returnCount);
if (subjects.Count > 0)
{
var task = CreateStudyPractice(progress, studentId, 0, progress.Yps_NextLessonIndex, 0, subjects.OrderBy(x => x.Ysj_SubjectType).Select(x => x.Ysj_Id).ToList(), StudyTaskTypeEnum.课后练习);
return(task);
}
}
return(null);
}
public bool SaveWrongBook(List <StudentAnswerCard> answerCard, DtoStudentWrongBook wrongBook)
{
bool result = false;
var studyProcess = StudentStudyBll.GetProgressByStudentCourse(wrongBook.StudentId, wrongBook.CourseId);
int schoolId = studyProcess == null ? 0 : studyProcess.Yps_SchoolId;
int classId = studyProcess == null ? 0 : studyProcess.Yps_ClassId;
List <StudentAnswerBase> answers = answerCard.SelectMany(s => s.AnswerCollection).ToList();
List <Yw_StudentWrongSubject> listSubject = new List <Yw_StudentWrongSubject>();
if (answers.Any(s => s.SubjectId <= 0))
{
throw new AbhsException(ErrorCodeEnum.ParameterInvalid, AbhsErrorMsg.ConstParameterInvalid);
}
answers.ForEach(a =>
{
if (CheckAnswerNeedRecordWorng(a))
{
Yw_StudentWrongSubjectExt tmp = new Yw_StudentWrongSubjectExt();
tmp.Yws_CourseId = wrongBook.CourseId;
tmp.Yws_CreateTime = DateTime.Now;
tmp.Yws_KnowledgeId = a.KnowledgeId;
tmp.Yws_LessonId = wrongBook.LessonId;
tmp.Yws_RemoveTryCount = 0;
tmp.Yws_Source = (int)wrongBook.Source;
tmp.Yws_Status = (int)StudyWrongStatusEnum.未消除;
tmp.Yws_Answer_Obj = a;
tmp.Yws_StudentId = wrongBook.StudentId;
tmp.Yws_SubjectType = a.Type;
tmp.Yws_UpdateTime = DateTime.Now;
tmp.Yws_WrongBookId = 0;
tmp.Yws_WrongSubjectId = a.SubjectId;
listSubject.Add(tmp);
}
});
if (listSubject.Count == 0)
{
return(true);
}
using (TransactionScope scope = new TransactionScope())
{
try
{
Yw_StudentWrongBook bookModel = GetBookByStudentAndStudy(wrongBook.StudentId, wrongBook.CourseId, wrongBook.LessonId, wrongBook.LessonProgressId, wrongBook.StudyTaskId);
bool saveSubject = false;
bool saveBook = false;
int WrongCount = 0;
int WrongKnowledgeCount = 0;
#region 获取要插入的错题及错题数的计算
if (bookModel != null)
{
List <Yw_StudentWrongSubject> oldSubjectList = GetSubjectByBookId(bookModel.Ywb_Id);
listSubject = listSubject.ExceptExt(oldSubjectList, l => l.Yws_WrongSubjectId)
//.Where(s =>
// {
// return !oldSubjectList.Exists(o => o.Yws_WrongSubjectId == s.Yws_WrongSubjectId);
// })
.Select(s => s)
.ToList();
WrongCount = bookModel.Yws_WrongCount + listSubject.Select(s => s.Yws_WrongSubjectId).Distinct().Count();
WrongKnowledgeCount = (from o in oldSubjectList
where o.Yws_Status == (int)StudyWrongStatusEnum.未消除 && o.Yws_KnowledgeId > 0
select o.Yws_KnowledgeId)
.Concat(from n in listSubject where n.Yws_KnowledgeId > 0 select n.Yws_KnowledgeId)
.Distinct().Count();
}
else
{
WrongCount = listSubject.Select(s => s.Yws_WrongSubjectId).Distinct().Count();
WrongKnowledgeCount = listSubject.Where(s => s.Yws_KnowledgeId > 0).Select(s => s.Yws_KnowledgeId).Distinct().Count();
}
#endregion
#region save错题本
if (bookModel != null)
{
bookModel.Yws_WrongCount = WrongCount;
bookModel.Yws_WrongKnowledgeCount = WrongKnowledgeCount;
bookModel.Yws_UpdateTime = DateTime.Now;
saveBook = StudentWrongBookRepository.Update(bookModel);
}
else
{
bookModel = new Yw_StudentWrongBook();
bookModel.Ywb_CourseId = wrongBook.CourseId;
bookModel.Ywb_LessonId = wrongBook.LessonId;
bookModel.Ywb_LessonProgressId = wrongBook.LessonProgressId;
bookModel.Ywb_StudentId = wrongBook.StudentId;
bookModel.Ywb_StudyTaskId = wrongBook.StudyTaskId;
bookModel.Yws_ClassId = classId;
bookModel.Yws_CreateTime = DateTime.Now;
bookModel.Yws_RemoveCount = 0;
bookModel.Yws_SchoolId = schoolId;
bookModel.Yws_Source = (int)wrongBook.Source;
bookModel.Yws_Status = (int)StudyWrongStatusEnum.未消除;
bookModel.Yws_UpdateTime = DateTime.Now;
bookModel.Yws_WrongCount = WrongCount;
bookModel.Yws_WrongKnowledgeCount = WrongKnowledgeCount;
bookModel.Ywb_Id = StudentWrongBookRepository.Insert(bookModel);
saveBook = bookModel.Ywb_Id > 0;
}
listSubject.ForEach(s => s.Yws_WrongBookId = bookModel.Ywb_Id);
#endregion
#region save错题详情
saveSubject = InsertSubjectList(listSubject);
#endregion
result = saveBook && saveSubject;
if (result)
{
scope.Complete();
}
else
{
RollbackTran();
}
}
catch (Exception)
{
RollbackTran();
throw;
}
}
return(result);
}
