public CheckResult Check(string input)
{
var result = new CheckResult();
if (string.IsNullOrWhiteSpace(input))
{
result.State = CheckState.Incorrect;
}
else
{
var distance = LevenshteinDistance.Compute(_currentItem.Translation, input);
var longer = input.Length;
if (_currentItem.Translation.Length > longer)
{
longer = _currentItem.Translation.Length;
}
result.Correctness = (int)Math.Floor(100 - (distance/(float) longer*100));
result.State = result.Correctness >= _treshold
? CheckState.Correct
: CheckState.Incorrect;
}
result.CorrectAnswer = _currentItem.Translation;
if (result.State == CheckState.Correct)
{
Completed++;
_currentItem = null;
}
if (result.State == CheckState.Correct && _items.Count == 0)
{
result.State = CheckState.Done;
}
return result;
}
private void ChangeStateByResult(CheckResult result)
{
switch (result.State)
{
case CheckState.Correct:
ChangeState(result, TestState.Next, "Progress " + _manager.Progress);
break;
case CheckState.Incorrect:
Result.Message = string.Format("Incorrect! ({0}%)", result.Correctness);
Result.Color = new SolidColorBrush(Colors.Red);
CurrentTestState = TestState.Next;
CorrectAnswer = result.CorrectAnswer;
ShowCorrectAnswerButton = true;
break;
case CheckState.Done:
ChangeState(result, TestState.Done, "All done!");
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private void ChangeState(CheckResult result, TestState state, string progressText)
{
Result.Message = string.Format("Correct! ({0}%)", result.Correctness);
Result.Color = new SolidColorBrush(Colors.Green);
CurrentTestState = state;
if (result.Correctness != 100)
{
CorrectAnswer = result.CorrectAnswer;
ShowCorrectAnswerButton = true;
}
Progress = progressText;
}