/// <summary>
/// Creates the test.
/// </summary>
/// <param name="subjectId">The subject id.</param>
/// <param name="numberOfQuestions">The number of questions.</param>
public Test CreateTest(Test test, int subjectId, List <Tuple <QuestionLevel, int> > numberOfQuestions,
int purpose, int subTest, double moreTime, out string message)
{
int totalQuestionForPerSubtest = numberOfQuestions.Sum(x => x.Item2);
List <Question> questions = new List <Question>(totalQuestionForPerSubtest * subTest);
foreach (Tuple <QuestionLevel, int> question in numberOfQuestions)
{
questions.AddRange(GetRandomQuestionForLevel(subjectId, question.Item1, purpose, question.Item2, subTest));
}
test.CreatedBy = UserService.CurrentUser.CurrentUser.Username;
test.CreatedDate = DateTime.Now;
test.UpdatedBy = test.CreatedBy;
test.UpdatedDate = DateTime.Now;
// create test copy
foreach (Question q in questions)
{
var tq = new TestQuestion();
tq.Question = q;
tq.Test = test;
test.TestQuestions.Add(tq);
}
IList <Question> tempQs = new List <Question>();
for (int count = 0; count < subTest; count++)
{
XDocument structure = new XDocument(new XElement("TestCopy"));
//New Requirement:
//1. Cau hoi trong cac de thi ko duoc trung nhau
//2. Neu ko du cau hoi thi duoc trung nhung phai dao vi tri cau hoi va cau tra loi o cac de.
//questionIdsPerSubtest with Id and Level
var questionIdsPerSubtest = new Dictionary <long, int>();
foreach (Tuple <QuestionLevel, int> question in numberOfQuestions)
{
for (int j = questions.Count - 1; j >= 0; j--)
{
if (questions[j].Level == (int)question.Item1 &&
!questionIdsPerSubtest.Keys.ToList().Exists(x => x == questions[j].QuestionId) &&
questionIdsPerSubtest.Count < totalQuestionForPerSubtest)
{
questionIdsPerSubtest.Add(questions[j].QuestionId, (int)question.Item1);
tempQs.Add(questions[j]);
questions.RemoveAt(j);
var countLevel = questionIdsPerSubtest.Values.Count(x => x == (int)question.Item1);
if (countLevel == question.Item2)
{
break;
}
}
}
}
//if (questionIdsPerSubtest.Count < totalQuestionForPerSubtest)
//{
// for (int i = questions.Count - 1; i >= 0; i--)
// {
// for (int j = tempQs.Count - 1; j >= 0; j--)
// {
// if (questions[i].Level == tempQs[j].Level
// && !questionIdsPerSubtest.Keys.ToList().Exists(x => x == tempQs[j].QuestionId)
// && questionIdsPerSubtest.Count < totalQuestionForPerSubtest)
// {
// questionIdsPerSubtest.Add(tempQs[j].QuestionId, tempQs[j].Level);
// }
// }
// }
//}
for (int i = 0; i < totalQuestionForPerSubtest; i++)
{
List <Answer> answers = m_questionService.GetAnswerOfQuestion(questionIdsPerSubtest.Keys.ElementAt(i));
List <XElement> answerList = new List <XElement>();
for (int j = 0; j < answers.Count; j++)
{
XElement answerElement = new XElement("A", new XAttribute("aOrder", j + 1), new XAttribute("aId", answers[j].AnswerId));
answerList.Add(answerElement);
}
structure.Element("TestCopy")
.Add(new XElement("Q", new XAttribute("qOrder", i + 1), new XAttribute("qId", questionIdsPerSubtest.Keys.ElementAt(i)),
answerList));
}
TestCopy tc = new TestCopy();
tc.Test = test;
tc.TestCopyStructure = structure.ToString();
test.TestCopies.Add(tc);
}
double timeStill = 0;
if (questions.Count > 0)
{
timeStill = questions.Sum(x => x.Time);
}
double realTestTime = (tempQs.Sum(q => q.Time) + timeStill) / subTest;
if (realTestTime > test.Time + moreTime)
{
message = "Thời gian chính xác để hoàn thành bài thi là: " + realTestTime +
"\nThời gian thi do người dùng cài đặt là: " + test.Time +
".\nThời gian chênh lệch: " + Math.Abs(realTestTime - test.Time) +
"\nBạn có muốn tiếp tục tạo đề thi không?";
}
else
{
message = "Thời gian chính xác để hoàn thành bài thi là: " + realTestTime +
"\nThời gian thi do người dùng cài đặt là: " + test.Time +
".\nThời gian chênh lệch: " + Math.Abs(realTestTime - test.Time) +
"\nBạn có muốn tiếp tục tạo đề thi không?";
}
test.TestQuestions.Clear();
foreach (Question q in tempQs)
{
var tq = new TestQuestion();
tq.Question = q;
tq.Test = test;
tq.QuestionId = q.QuestionId;
if (!test.TestQuestions.ToList().Exists(x => x.QuestionId == q.QuestionId))
{
test.TestQuestions.Add(tq);
}
}
return(test);
}
public MultiTest CreateMultiTest(MultiTest test, object classForMultiTest, Dictionary <int, List <Tuple <QuestionLevel, int> > > questionsNo, int copyNos, int totalQuestion, int purpose, double moreTime, out string message)
{
List <Question> questions = new List <Question>();
foreach (int subjectId in questionsNo.Keys)
{
foreach (var questionNo in questionsNo[subjectId])
{
questions.AddRange(RandomQuestion(subjectId, questionNo.Item1, questionNo.Item2, purpose));
}
}
test.CreatedBy = UserService.CurrentUser.CurrentUser.Username;
test.CreatedDate = DateTime.Now;
test.UpdatedBy = test.CreatedBy;
test.UpdatedDate = DateTime.Now;
test.IsMixedTest = false;
if (classForMultiTest != null)
{
test.FK_ClassId = (int)classForMultiTest;
}
foreach (Question question in questions)
{
MultiTestQuestion mtq = new MultiTestQuestion();
mtq.Question = question;
//mtq.MultiTest = test;
test.MultiTestQuestions.Add(mtq);
}
// create test copy
List <long> questionIds = questions.Select(q => q.QuestionId).ToList();
Random ran = new Random();
int max = 1000;
for (int count = 0; count < copyNos; count++)
{
XDocument structure = new XDocument(new XElement("MultiTestCopy"));
for (int i = 0; i < max; i++)
{
int index = ran.Next(questionIds.Count - 1);
long item = questionIds[i % questionIds.Count];
questionIds[i % questionIds.Count] = questionIds[index];
questionIds[index] = item;
}
for (int i = 0; i < questionIds.Count; i++)
{
List <Answer> answers = m_questionService.GetAnswerOfQuestion(questionIds[i]);
List <XElement> answerList = new List <XElement>();
for (int j = 0; j < answers.Count; j++)
{
XElement answerElement = new XElement("A", new XAttribute("aOrder", j + 1), new XAttribute("aId", answers[j].AnswerId));
answerList.Add(answerElement);
}
structure.Element("MultiTestCopy")
.Add(new XElement("Q", new XAttribute("qOrder", i + 1), new XAttribute("qId", questionIds[i]),
answerList));
}
MultiTestCopy tc = new MultiTestCopy();
//tc.MultiTest = test;
tc.MultiTestCopyStructure = structure.ToString();
test.MultiTestCopies.Add(tc);
}
double realTestTime = questions.Sum(q => q.Time);
if (realTestTime > test.Time + moreTime)
{
message = "Thời gian chính xác để hoàn thành bài thi là: " + realTestTime +
"\nThời gian thi do người dùng cài đặt là: " + test.Time +
".\nThời gian chênh lệch: " + Math.Abs(realTestTime - test.Time) +
"\nBạn có muốn tiếp tục tạo đề thi không?";
}
else
{
message = "Thời gian chính xác để hoàn thành bài thi là: " + realTestTime +
"\nThời gian thi do người dùng cài đặt là: " + test.Time +
".\nThời gian chênh lệch: " + Math.Abs(realTestTime - test.Time) +
"\nBạn có muốn tiếp tục tạo đề thi không?";
}
return(test);
}