public double AcceptAnswer(TrainingCard trainingFlashcard, FlashcardAnswer answer)
{
var correctness = CalculateCorrectnessOfAnswer(answer);
unit.UserFlashcardMemoryRepository.AddBasedOnTraining(trainingFlashcard, (decimal)(correctness * correctness));
unit.TrainingCardRepository.Remove(trainingFlashcard);
unit.SaveChanges();
sessionService.UserInfo.TrainingInfo.Cards.RemoveAt(0);
return(correctness);
}
public bool AddNewReviewCardIfAble()
{
if (sessionService.UserInfo.ReviewInfo.ReviewCards.Count >= 30)
{
return(false);
}
var memory = unit.UserFlashcardMemoryRepository.GetFirstTrainableMemories(sessionService.UserID, sessionService.LanguageID, 1).FirstOrDefault();
if (memory == null)
{
return(false);
}
var reviewCard = unit.ReviewCardRepository.AddCardBasedOnMemory(memory, sessionService.UserInfo.ReviewInfo.ReviewID);
unit.SaveChanges();
sessionService.UserInfo.ReviewInfo.AddCard(new DbReviewCard(reviewCard));
return(true);
}
public double UpdateMemoryBasedOnAnswer(ReviewCard card, FlashcardAnswer answer)
{
var memory = unit.UserFlashcardMemoryRepository
.GetMemoryBasedOnReview(card.ReviewID, card.FlashcardID, sessionService.UserID);
var correctness = questionService.CalculateCorrectnessOfAnswer(answer);
double newStrength = calculateNewStrength(card, memory, correctness);
int newInterval = calculateNewInterval(memory, newStrength, card);
memory.Strength = (decimal)newStrength;
memory.LastInterval = newInterval;
memory.IntervalCount++;
memory.ReviewDate = DateTime.Now.AddMinutes(newInterval);
unit.SaveChanges();
return(correctness);
}