/// <summary>
/// 生成新的学习进度数据
/// </summary>
/// <param name="studentId">学生id</param>
/// <param name="courseId">课程id</param>
/// <param name="lessonId">课时id</param>
/// <returns></returns>
public Yw_StudentLessonProgress GetNewProgressByStudent(int studentId, int courseId, int lessonId)
{
if (ScpRepository.GetByStudentCourse(studentId, courseId) != null)//如果此学生有此课程
{
LessonBll bll = new LessonBll();
var lesson = bll.GetLesson(lessonId);
//获取最后一次学习进度
var progress = StuLesProgressRepository.GetLastProgress(studentId, lessonId);
//学习进度
var newProgress = new Yw_StudentLessonProgress()
{
Yle_StudentId = studentId,
Yle_CourseId = courseId,
Yle_LessonId = lessonId,
Yle_LessonIndex = lesson.Ycl_Index,
Yle_CreateTime = DateTime.Now,
Yle_CoinFromUIndex = 1,
Yle_LastStudyTime = DateTime.Now,
Yle_StartStudyTime = DateTime.Now,
Yle_UnitIndex = 1,
Yle_StudySeconds = 0,
Yle_IsFinished = false,
Yle_IsLastest = true,
Yle_key = Guid.NewGuid().ToString("N").ToLower()
};
//学生答题记录
var newAnswers = new Yw_StudentLessonAnswer()
{
Yla_StudentId = studentId,
Yla_CourseId = courseId,
Yla_LessonId = lessonId,
Yla_StudentAnswer = "",
Yla_StudentCoin = ""
};
if (progress == null)//如果没有学习进度,则重新添加一个学习进度
{
StuLesProgressRepository.Insert(newProgress);
newAnswers.Yla_LessonProgressId = newProgress.Yle_Id;
StuLessonAnsRepository.Insert(newAnswers);
}
else //否则新增加一个学习进度,并且修改最大金币发放单元
{
newProgress.Yle_CoinFromUIndex = progress.Yle_CoinFromUIndex > progress.Yle_UnitIndex ? progress.Yle_CoinFromUIndex : progress.Yle_UnitIndex;//修改最大金币发放单元
StuLesProgressRepository.Insert(newProgress);
newAnswers.Yla_LessonProgressId = newProgress.Yle_Id;
StuLessonAnsRepository.Insert(newAnswers);
}
return(newProgress);
}
return(null);
}
public Yw_StudentLessonAnswer GetLessonAnswer(int lessonProgressId)
{
return(StuLessonAnsRepository.GetByProgressId(lessonProgressId));
}
/// <summary>
/// 提交学生学习进度数据
/// </summary>
/// <param name="info"></param>
/// <returns>0:添加成功,-1:课时进度秘钥错误,-2:数据重复提交,-3:金币数目错误</returns>
public int SubmitStudyProgress(DtoStudnetUnitSubmit info)
{
///注:这里考虑如何使用事务
DateTime submitTime = DateTime.Now;
//获取最后一次学习进度
var progress = StuLesProgressRepository.GetLastProgress(info.StudnetId, info.LessonId);
//判断课时进度秘钥是否正确
if (progress.Yle_key == info.ProgressKey)
{
//如果当前进度中的当前学习单元页大于提交的单元
if (progress.Yle_UnitIndex > info.UnitNum)
{
return(-2);//表示数据已经提交过,不能重复提交
}
else
{
//创建答题卡对象
StudentAnswerCard card = null;
#region 填充答题卡数据
if (info.Answers != null && info.Answers.Count > 0)
{
card = new StudentAnswerCard();
card.AnswerCollection = info.Answers; //填充答案
card.TotalStars = info.Answers.Sum(s => s.ResultStars); //填充总星数
card.TotalCoins = info.Answers.Sum(s => s.ResultCoins); //填充总金币数
card.Part = info.UnitID; //填充单元(页码)id
card.SubmitTime = submitTime.ToString("yyyy-MM-dd HH:mm:ss"); //填充提交时间
card.UseTime = info.UseTime; //填充用户学习时间
}
#endregion
//创建金币记录对象
StuLessonCoinRecord coinRecord = null;
#region 更新金币记录对象及答题卡部分数据
if (info.Coins != null && info.Coins.Count > 0)
{
coinRecord = new StuLessonCoinRecord();
coinRecord.CoinCollection = info.Coins; //填充金币记录
coinRecord.TotalCoins = info.Coins.Sum(s => s.GetCoins); //填充总金币数
coinRecord.Part = info.UnitID; //填充单元(页码)id
coinRecord.SubmitTime = submitTime.ToString("yyyy-MM-dd HH:mm:ss"); //填充提交时间
coinRecord.UseTime = info.UseTime; //填充用户学习时间
}
#endregion
if (coinRecord != null && coinRecord.TotalCoins > info.AllCoin) //如果得到的金币数大于本页总金币数
{
return(-3); //表示金币和大于总金币数
}
else
{
#region 修改课时进度表数据
progress.Yle_UnitIndex = info.UnitNum + 1; //更新开始页
progress.Yle_IsFinished = info.UnitNum >= info.TotalUnitNum; //更新是否结束
progress.Yle_LastStudyTime = DateTime.Now; //更新最后学习时间
progress.Yle_SubjectCount += info.Answers.Count; //更新总题目数
progress.Yle_RightSubjectCount += info.Answers.Where(s => s.IsRight).Count(); //更新正确题目数
progress.Yle_GainCoins += info.Coins.Sum(s => s.GetCoins); //更新获取金币数量
progress.Yle_Percent = (int)(Math.Round(progress.Yle_RightSubjectCount * 1.0 / (progress.Yle_SubjectCount == 0 ? 1 : progress.Yle_SubjectCount), 2) * 100); //重新计算题目正确率
progress.Yle_StudySeconds += info.UseTime; //增加课时进度学习时长
#endregion
#region 事务提交
using (TransactionScope scope = new TransactionScope())
{
try
{
#region 提交
//如果学习完成,更新学生课程进度表
if (progress.Yle_IsFinished)
{
progress.Yle_FinishStudyTime = DateTime.Now;//修改课时完成完成时间
//获取完成的课时id
var finisheds = StuLesProgressRepository.GetFinishedByLesson(info.StudnetId, info.CoruseId);
if (!finisheds.Contains(info.LessonId))//如果课时没有学完过,修改课程进度表数据
{
LessonBll bll = new LessonBll();
int lessonCount = bll.GetLessonsCountByCourse(info.CoruseId); //课程的课时数
var courseProgress = ScpRepository.GetByStudentCourse(info.StudnetId, info.CoruseId); //获取课程完成进度.
courseProgress.Yps_LessonFinishedCount = finisheds.Count() + 1; //完成的课时数+1(自身)
courseProgress.Yps_IsFinished = courseProgress.Yps_LessonFinishedCount >= lessonCount; //如果完成的课时数大于等于总课时数,则表示完成.
courseProgress.Yps_NextLessonIndex = courseProgress.Yps_NextLessonIndex > info.LessonNum ? courseProgress.Yps_NextLessonIndex : info.LessonNum + 1; //如果下一课时数大于当前课时,则不更改.否则改为当前课时的下一课时序号
if (courseProgress.Yps_IsFinished && courseProgress.Yps_FinishStudyTime == new DateTime(1900, 1, 1)) //如果课程进度完成,且完成时间不为初始值,则修改此时间
{
courseProgress.Yps_FinishStudyTime = DateTime.Now;
}
courseProgress.Yps_UpdateTime = DateTime.Now; //更新时间
ScpRepository.Update(courseProgress); //更新课程进度
}
}
StuLesProgressRepository.Update(progress);//更新课时数据
string cardJson = "", coinJson = "";
//添加错题数据
if (card != null)
{
cardJson = $",{JsonConvert.SerializeObject(card)}";
new StudentWrongBookBll().SaveWrongBook(new List <StudentAnswerCard> {
card
}, new DtoStudentWrongBook {
CourseId = progress.Yle_CourseId, LessonId = progress.Yle_LessonId, LessonProgressId = progress.Yle_Id, Source = StudyWrongSourceEnum.课程学习, StudentId = progress.Yle_StudentId, StudyTaskId = 0
});
}
//需要修改学生金币数量及经验
if (coinRecord != null)
{
coinJson = $",{JsonConvert.SerializeObject(coinRecord)}";
new StudentInfoBll().AddCoins(info.StudnetId, coinRecord.TotalCoins);
}
//更新学生课时答题结果表
if (card != null || coinRecord != null)
{
StuLessonAnsRepository.Update(info.ProgressID, cardJson, coinJson);
}
#endregion
scope.Complete();
}
catch (Exception ex)
{
RollbackTran();
throw ex;
}
}
#endregion
StudentStudyBll ssbll = new StudentStudyBll();
ssbll.PublishStudyMessage(progress.Yle_CourseId, progress.Yle_LessonId, progress.Yle_StudentId, info.UseTime, progress.Yle_SubjectCount, progress.Yle_GainCoins);
if (progress.Yle_IsFinished)
{
ssbll.PublishLessonFinishMessage(progress.Yle_StudentId, progress.Yle_Id);
}
return(0);//表示成功
}
}
}
else
{
return(-1);//表示课时进度秘钥错误,及在其他地方打开了这个课程学习
}
}
/// <summary>
/// 获取最新的课时数据,并更新学习进度秘钥
/// </summary>
/// <param name="studentId">学生id</param>
/// <param name="courseId">课程id</param>
/// <param name="lessonId">课时id</param>
/// <returns></returns>
public Yw_StudentLessonProgress GetLastProgressByStudent(int studentId, int courseId, int lessonId)
{
var course = ScpRepository.GetByStudentCourse(studentId, courseId);
if (course != null) //如果此学生有此课程
{
ScpRepository.UpdateStudyTime(course.Yps_Id, DateTime.Now); //更新最后学习时间
LessonBll bll = new LessonBll();
var lesson = bll.GetLesson(lessonId);
if (lesson.Ycl_CourseId != courseId || lesson.Ycl_Status != (int)LessonStatusEnum.合格)
{
return(null);
} //如果课时的课程id不一致或课时不是合格状态,则返回空
//获取最后一次学习进度
var progress = StuLesProgressRepository.GetLastProgress(studentId, lessonId);
var newProgress = new Yw_StudentLessonProgress
{
Yle_StudentId = studentId,
Yle_CourseId = courseId,
Yle_LessonId = lessonId,
Yle_LessonIndex = lesson.Ycl_Index,
Yle_CreateTime = DateTime.Now,
Yle_CoinFromUIndex = 1,
Yle_LastStudyTime = DateTime.Now,
Yle_StartStudyTime = DateTime.Now,
Yle_UnitIndex = 1,
Yle_StudySeconds = 0,
Yle_IsFinished = false,
Yle_IsLastest = true,
Yle_key = Guid.NewGuid().ToString("N").ToLower()
};
var newAnswers = new Yw_StudentLessonAnswer()
{
Yla_StudentId = studentId,
Yla_CourseId = courseId,
Yla_LessonId = lessonId,
Yla_StudentAnswer = "",
Yla_StudentCoin = ""
};
if (progress == null)//如果没有学习进度,则重新添加一个学习进度
{
StuLesProgressRepository.Insert(newProgress);
newAnswers.Yla_LessonProgressId = newProgress.Yle_Id;
StuLessonAnsRepository.Insert(newAnswers);
return(newProgress);
}
else if (progress.Yle_IsFinished) //如果学习进度完成了,则新增加一个学习进度,并且修改最大金币发放单元
{
newProgress.Yle_CoinFromUIndex = progress.Yle_CoinFromUIndex > progress.Yle_UnitIndex ? progress.Yle_CoinFromUIndex : progress.Yle_UnitIndex; //修改最大金币发放单元
StuLesProgressRepository.Insert(newProgress);
newAnswers.Yla_LessonProgressId = newProgress.Yle_Id;
StuLessonAnsRepository.Insert(newAnswers);
return(newProgress);
}
else //如果学习进度没有完成
{
progress.Yle_key = StuLesProgressRepository.UpdateKey(progress.Yle_Id);//更新学习进度的秘钥
return(progress);
}
}
return(null);
}