/// <summary>
/// 获取解题思路信息
/// </summary>
/// <param name="id"></param>
/// <param name="questionType"></param>
/// <returns></returns>
public async Task <string> GetQuestionIdeas(int id, string questionType)
{
if (questionType == QuestionTypeConst.Judge)
{
var question = await _judgeService.FindJudgeById(id);
return(question.Ideas);
}
else
{
var question = await _selectService.FindSelectById(id);
return(question.Ideas);
}
}
/// <summary>
/// 学生答题
/// </summary>
/// <param name="studentId">学生Id</param>
/// <param name="examQuestionId">考试问题Id</param>
/// <param name="answer">回答内容</param>
/// <returns></returns>
public async Task <StuanswerdetailDto> AnswerQuestionByStudent(
int studentId,
int examQuestionId,
string[] answer)
{
// 判断是否已经答题过，避免重复答题
var isAnswer = await _examquestionRepository.Change <TbStuanswerdetail>()
.Where(u => u.StuId == studentId &&
u.QuestionId == examQuestionId)
.FirstOrDefaultAsync();
if (isAnswer != null)
{
throw Oops.Oh(ExamAnswerScoreErrorCodes.d2102);
}
var examQuestion = await _examquestionRepository
.Entities.AsNoTracking()
.Where(u => u.Id == examQuestionId)
.Select(u => new TbExamquestion
{
Id = u.Id,
QuestionType = u.QuestionType,
ExamId = u.ExamId,
QuestionId = u.QuestionId,
Score = u.Score,
Exam = new TbExam
{
Id = u.Exam.Id,
IsEnable = u.Exam.IsEnable,
IsFinish = u.Exam.IsFinish,
}
})
.FirstOrDefaultAsync();
if (examQuestion == null || (examQuestion.Exam.IsEnable == "0" || examQuestion.Exam.IsFinish == "1"))
{
throw Oops.Oh(ExamAnswerScoreErrorCodes.d2101);
}
string[] questionAnswer;
// 获取题目详情
if (examQuestion.QuestionType == QuestionTypeConst.Judge)
{
var question = await _judgeService.FindJudgeById(examQuestion.QuestionId);
questionAnswer = question.Answer.Split("、");
}
else
{
var question = await _selectService.FindSelectById(examQuestion.QuestionId);
questionAnswer = question.Answer.Split("、");
}
// 判断答案是否正确
var q = from a in answer join b in questionAnswer on a equals b select a;
bool isRight = answer.Length == questionAnswer.Length && q.Count() == answer.Length;
var stuanswerdetailDto = new StuanswerdetailDto
{
StuId = studentId,
ExamId = examQuestion.ExamId,
QuestionId = examQuestionId,
QuestionType = examQuestion.QuestionType,
Stuanswer = string.Join("、", answer),
Answer = string.Join("、", questionAnswer),
Isright = isRight ? "1" : "0",
};
// 记录答题
var stuanswer = await _answerRepository
.InsertNowAsync(stuanswerdetailDto.Adapt <TbStuanswerdetail>());
return(stuanswer.Entity.Adapt <StuanswerdetailDto>());
}
/// <summary>
/// 查询选择题信息
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public async Task <SelectCourseChapterOutput> GetSelectInfo(int id)
{
var selectEntity = await _selectService.FindSelectById(id);
return(selectEntity.Adapt <SelectCourseChapterOutput>());
}