private void CalculateResults()
{
foreach (var answer in Answers)
{
ResultItem resultItem;
var correctAnswers =
answer.Key.Variants.OrderBy(ans => ans.Id)
.Where(ans => ans.IsRight)
.Select(ans => ans.Id)
.ToList();
var answers =
answer.Value.Where(mod => mod.CheckState)
.OrderBy(mod => mod.VariantId)
.Select(mod => mod.VariantId)
.ToList();
var equalityResult = correctAnswers.SequenceEqual(answers);
if (this.ResultConfig.FullAnswer)
{
resultItem = equalityResult
? new ResultItem
{
CountOfRightAnswers = answers.Count,
CountOfWrongAnswers = 0,
IsRight = true,
Koefficient = 1
}
: this.GetResultItem(answers, correctAnswers,
answers.Count > correctAnswers.Count);
}
else
{
if (equalityResult)
{
resultItem = new ResultItem
{
CountOfRightAnswers = answers.Count,
CountOfWrongAnswers = 0,
IsRight = true,
Koefficient = 1
};
}
else
{
resultItem = this.GetResultItem(answers, correctAnswers, answers.Count > correctAnswers.Count);
resultItem.IsRight = false;
resultItem.Koefficient = 0;
}
}
this.Results.Add(resultItem);
}
}
private ResultItem GetResultItem(ICollection<int> answers, ICollection<int> correctAnswers, bool answersGreater)
{
var resultItem = new ResultItem();
foreach (var checkCorrectness in answers.Select(correctAnswers.Contains))
{
if (checkCorrectness)
{
resultItem.CountOfRightAnswers++;
}
else
{
resultItem.CountOfWrongAnswers++;
}
}
if (answersGreater)
{
resultItem.CountOfWrongAnswers = resultItem.CountOfWrongAnswers +
(correctAnswers.Count - answers.Count);
}
if (this.ResultConfig.IgnoreWrongAnswers)
{
resultItem.Koefficient = resultItem.CountOfRightAnswers / correctAnswers.Count;
}
else
{
resultItem.Koefficient = (resultItem.CountOfRightAnswers - resultItem.CountOfWrongAnswers) /
correctAnswers.Count;
}
resultItem.IsRight = resultItem.Koefficient > 0;
return resultItem;
}
