public static CourseProgressData Update(
this CourseProgressData courseProgressData,
int lessonId,
int stepId,
int questionId,
QuestionStateData questionStateData)
{
if (courseProgressData == null)
{
throw new ArgumentNullException(nameof(courseProgressData));
}
if (questionStateData == null)
{
throw new ArgumentNullException(nameof(questionStateData));
}
var lessonProgress = courseProgressData.LessonProgresses[lessonId];
var stepProgress = lessonProgress.StepProgresses[stepId];
var questionStates = stepProgress.QuestionStates;
courseProgressData.StatisticsData.PassedQuestionsCount += GetDelta(questionStates[questionId], questionStateData);
questionStates[questionId] = questionStateData;
stepProgress.Passed = stepProgress.QuestionStates.TrueForAll(x => x.Passed);
lessonProgress.Passed = lessonProgress.StepProgresses.TrueForAll(x => x.Passed);
courseProgressData.Passed = courseProgressData.LessonProgresses.TrueForAll(x => x.Passed);
return(courseProgressData);
}
public static QuestionState ToApiModel(this QuestionStateData questionStateData)
{
var result = new QuestionState
{
ProgressId = questionStateData.ProgressId,
CourseId = questionStateData.CourseId,
LessonId = questionStateData.LessonId,
StepId = questionStateData.StepId,
QuestionId = questionStateData.QuestionId,
CurrentAttemptsCount = questionStateData.CurrentAttemptsCount,
Passed = questionStateData.Passed,
CorrectlySelectedAnswers = new List <int>(questionStateData.CorrectlySelectedAnswers),
SelectedAnswers = new List <int>(questionStateData.SelectedAnswers)
};
return(result);
}
public static QuestionStateData GetQuestionState(this QuestionData questionData)
{
if (questionData == null)
{
throw new ArgumentNullException(nameof(questionData));
}
var result = new QuestionStateData
{
QuestionId = questionData.Id,
CourseId = questionData.CourseId,
LessonId = questionData.LessonId,
StepId = questionData.StepId,
SelectedAnswers = new List <int>(),
CorrectlySelectedAnswers = new List <int>()
};
return(result);
}
public static QuestionStateData Update(this QuestionStateData stateData, QuestionData questionData, List <int> selected)
{
if (stateData == null)
{
throw new ArgumentNullException(nameof(stateData));
}
if (questionData == null)
{
throw new ArgumentNullException(nameof(questionData));
}
if (selected == null)
{
throw new ArgumentNullException(nameof(selected));
}
stateData.SelectedAnswers = new List <int>(selected);
stateData.CorrectlySelectedAnswers = selected.Where(x => questionData.CorrectAnswers.Contains(x)).ToList();
stateData.Passed = stateData.SelectedAnswers.Count == stateData.CorrectlySelectedAnswers.Count;
stateData.CurrentAttemptsCount++;
return(stateData);
}
private static int GetDelta(QuestionStateData curStateData, QuestionStateData newStateData)
{
return(Convert.ToInt32(newStateData.Passed) - Convert.ToInt32(curStateData.Passed));
}
