public Card Generate(Card card)
{
card.Id = TimeGenerator.RandomId(CardIds);
card.LastModified = Math.Max(card.Id, TimeGenerator.RandomTime());
bool lapsing;
PracticeState state;
ComputeNextCardType(out state, out lapsing);
switch (state)
{
case PracticeState.Due:
DueCount--;
return(SetupDueCard(card, lapsing));
case PracticeState.Learning:
LearnCount--;
return(SetupLearningCard(card, lapsing));
case PracticeState.New:
NewCount--;
return(SetupNewCard(card));
}
throw new InvalidOperationException();
}
private Card SetupLearningCard(Card card, bool lapsing)
{
card.PracticeState = PracticeState.Learning;
card.Due = TimeGenerator.RandomTime(card.LearningOrLapsingSteps.Last());
if (lapsing)
{
SetupLapse(card);
SetupSpacedRepetitionDatas(card);
}
return(card);
}
private Card SetupDueCard(Card card, bool lapsing)
{
card.PracticeState = PracticeState.Due;
card.Due = Math.Max(card.Id, TimeGenerator.RandomTime());
if (lapsing)
{
SetupLapse(card);
}
SetupSpacedRepetitionDatas(card);
return(card);
}
//
// Constructor
public CardGenerator(TimeGenerator timeGenerator, CollectionConfig config, int count = 100, float newRatio = 3, float learnRatio = 2, float dueRatio = 5, float lapsePercent = 10)
{
TimeGenerator = timeGenerator;
Config = config;
float totalRatio = newRatio + learnRatio + dueRatio;
NewCount = (int)(newRatio / totalRatio * count);
LearnCount = (int)(learnRatio / totalRatio * count);
DueCount = count - NewCount - LearnCount;
LapseCount = (int)Math.Min(
lapsePercent / 100.0f * (DueCount + LearnCount),
DueCount + LearnCount);
CardIds = new HashSet <int>();
}