public TestStatsDTO GetTestStatsById(int id)
{
var test = uOw.TestRepo.GetByID(id);
double?avarageGrade = test.TestHistory?.Average(x => x.ResultGrade);
int? countOfAccepted = test.TestHistory?.Where(x => (x.ResultGrade >= (test.Requirment / 100) * test.Grade)).Count();
int percantageOfAccepted = countOfAccepted.HasValue ? (int)((double)countOfAccepted / (double)test.TestHistory.Count() * 100) : 0;
Dictionary <int, int> questionCountOfRightAnswersStats = new Dictionary <int, int>();
Dictionary <double, int> testResultsGradesStats = new Dictionary <double, int>();
if (test.Questions != null)
{
for (int i = 0; i < test.Questions.Count + 1; i++)
{
questionCountOfRightAnswersStats.Add(i, 0);
}
}
if (test.TestHistory != null)
{
foreach (var testResult in test.TestHistory)
{
int i = 0;
foreach (var question in testResult.Questions)
{
i++;
var gradeForQuestion = GetGradeForQuestion(question, testResult.Test.ConsiderPartialAnswers, testResult.Test.Grade, testResult.Questions.Count);
var maxGradeForQuestion = GetWeightOfQuestion(testResult.Test, question);
if (gradeForQuestion == maxGradeForQuestion)
{
questionCountOfRightAnswersStats[i] += 1;
}
}
if (!testResultsGradesStats.ContainsKey(testResult.ResultGrade))
{
testResultsGradesStats.Add(testResult.ResultGrade, 0);
}
testResultsGradesStats[testResult.ResultGrade] += 1;
}
}
var maxNumber = questionCountOfRightAnswersStats.Skip(1).Max(x => x.Value);
var numberOfEasiest = questionCountOfRightAnswersStats.FirstOrDefault(x => x.Value == maxNumber).Key;
var minNumber = questionCountOfRightAnswersStats.Skip(1).Min(x => x.Value);
var numberOfHardest = questionCountOfRightAnswersStats.FirstOrDefault(x => x.Value == minNumber).Key;
var easiestQuestion = test.Questions.Skip(numberOfEasiest - 1).Take(1).FirstOrDefault();
var hardestQuestion = test.Questions.Skip(numberOfHardest - 1).Take(1).FirstOrDefault();
var model = new TestStatsDTO
{
BarsOfGrades = testResultsGradesStats,
BarsOfQuestions = questionCountOfRightAnswersStats,
AvarageGrade = avarageGrade.HasValue ? avarageGrade.Value : 0,
PercantageOfAccepted = percantageOfAccepted,
Test = Mapper.Map <TestDTO>(test),
EasiestQuestion = Mapper.Map <QuestionDTO>(easiestQuestion),
HardestQuestion = Mapper.Map <QuestionDTO>(hardestQuestion),
Results = new List <TestResultDTO>()
};
foreach (var testResult in test.TestHistory.OrderByDescending(x => x.TimeStart))
{
model.Results.Add(Mapper.Map <TestResultDTO>(testResult));
}
return(model);
}
public TestStatsDTO GetTestStatsById(int id)
{
var test = uOw.TestRepo.GetByID(id);
double?avarageGrade = test.TestHistory?.Average(x => x.ResultGrade);
int? countOfAccepted = test.TestHistory?.Where(x => (x.ResultGrade >= (test.Requirment / 100) * test.Grade)).Count();
int percantageOfAccepted = countOfAccepted.HasValue ? (int)((double)countOfAccepted / (double)test.TestHistory.Count() * 100) : 0;
Dictionary <int, int> questionCountOfRightAnswersStats = new Dictionary <int, int>();
Dictionary <int, int> questionsCountOfAllTries = new Dictionary <int, int>();
Dictionary <int, double> questionsPercantageCorrect = new Dictionary <int, double>();
Dictionary <int, int> questionsMap = new Dictionary <int, int>();
Dictionary <double, int> testResultsGradesStats = new Dictionary <double, int>();
if (test.Questions != null)
{
var questionsArray = test.Questions.ToArray();
for (int i = 0; i < questionsArray.Length; i++)
{
questionsMap.Add(questionsArray[i].Id, i + 1);
questionsCountOfAllTries.Add(questionsArray[i].Id, 0);
}
for (int i = 1; i < test.Questions.Count + 1; i++)
{
questionCountOfRightAnswersStats.Add(i, 0);
}
}
if (test.TestHistory != null)
{
foreach (var testResult in test.TestHistory)
{
int i = 0;
foreach (var question in testResult.Questions)
{
i++;
var gradeForQuestion = GetGradeForQuestion(question, testResult.Test.ConsiderPartialAnswers, testResult.Test.Grade, testResult.Questions.Count);
var maxGradeForQuestion = GetWeightOfQuestion(testResult.Test, question, testResult.Questions.ToList());
if (gradeForQuestion == maxGradeForQuestion)
{
questionCountOfRightAnswersStats[questionsMap[question.QuestionId]] += 1;
}
}
if (!testResultsGradesStats.ContainsKey(testResult.ResultGrade))
{
testResultsGradesStats.Add(testResult.ResultGrade, 0);
}
testResultsGradesStats[testResult.ResultGrade] += 1;
}
var groupedQuestionsIds = test.TestHistory
.SelectMany(x => x.Questions.Select(y => y.QuestionId))
.GroupBy(x => x)
.ToDictionary(x => x.Key, y => y.Count());
foreach (var element in questionCountOfRightAnswersStats)
{
if (groupedQuestionsIds.ContainsKey(questionsMap.FirstOrDefault(x => x.Value == element.Key).Key))
{
questionsPercantageCorrect.Add(element.Key, 100 * (double)element.Value / (double)groupedQuestionsIds[questionsMap.FirstOrDefault(x => x.Value == element.Key).Key]);
}
else
{
questionsPercantageCorrect.Add(element.Key, -1);
}
}
}
//var numbersToDelete = questionCountOfRightAnswersStats.Where(x => x.Value == -1).Select(x => x.Key).ToList();
//foreach (var numberToDelete in numbersToDelete)
//{
// questionCountOfRightAnswersStats.Remove(numberToDelete);
//}
var maxNumber = questionsPercantageCorrect.Count != 0 ? questionsPercantageCorrect.Where(x => x.Value != -1).Max(x => x.Value) : 0;
var numberOfEasiest = questionsPercantageCorrect.FirstOrDefault(x => x.Value == maxNumber).Key;
var easiestQuestionId = questionsMap.FirstOrDefault(x => x.Value == numberOfEasiest).Key;
var minNumber = questionsPercantageCorrect.Count != 0 ? questionsPercantageCorrect.Where(x => x.Value != -1).Min(x => x.Value) : 0;
var numberOfHardest = questionsPercantageCorrect.FirstOrDefault(x => x.Value == minNumber).Key;
var hardersQuestionId = questionsMap.FirstOrDefault(x => x.Value == numberOfHardest).Key;
var easiestQuestion = numberOfEasiest != 0 ? test.Questions.FirstOrDefault(x => x.Id == easiestQuestionId) : new Question();
var hardestQuestion = numberOfHardest != 0 ? test.Questions.FirstOrDefault(x => x.Id == hardersQuestionId) : new Question();
var model = new TestStatsDTO
{
BarsOfGrades = testResultsGradesStats,
BarsOfQuestions = questionCountOfRightAnswersStats,
BarsOfPercantageCorrectAnswers = questionsPercantageCorrect,
AvarageGrade = avarageGrade ?? 0,
PercantageOfAccepted = percantageOfAccepted,
Test = Mapper.Map <TestDTO>(test),
EasiestQuestion = Mapper.Map <QuestionDTO>(easiestQuestion),
HardestQuestion = Mapper.Map <QuestionDTO>(hardestQuestion),
Results = new List <TestResultDTO>()
};
foreach (var testResult in test.TestHistory.OrderByDescending(x => x.TimeStart))
{
model.Results.Add(Mapper.Map <TestResultDTO>(testResult));
}
return(model);
}
