public override Card GetNextCard(TrialPerformance trialPerformance)
{
InitCardDataIfNeeded();
if (_previousCardIntervalData != null)
{
RecordPreviousTrial(trialPerformance);
}
if (_activeCards.Count <= 0 && _inactiveCards.Count <= 0)
{
return(null);
}
if (ShouldActivateNewCard()) // TODO Should this really happen if the user fails? Should we have a staleness metric like back in the good old days?
{
ActivateNewCard();
}
Card nextCard = _activeCards[0].card;
_previousCardIntervalData = _activeCards[0];
_activeCards.Remove(_previousCardIntervalData); // TODO slow?
return(nextCard);
}
private void AddHistoryEntryToDatabase(Card card, TrialPerformance trialPerformance)
{
int successInt = (int)trialPerformance; // TODO change bool in sqlite database to string version of bool...
string insertHistoryEntryQuery = String.Format("insert into CardHistories (DateTime, Success, Card) values ('{0}', {1}, {2})", DateTime.Now.Ticks, successInt, card.ID);
ExecuteSimpleQuery(insertHistoryEntryQuery);
}
private void RecordPreviousTrial(TrialPerformance trialPerformance)
{
if (_previousCardIntervalData == null)
{
throw new InvalidOperationException("Tried to record trial data without first getting a card. GetNextCard first!");
}
_previousCardIntervalData = CalculateCardIntervalData(_previousCardIntervalData.card); // HACK HACK FIXME TODO does this even work?
int insertAt = 0;
for (int i = 0; i < _activeCards.Count; i++)
{
insertAt = i + 1; // TODO FIXME This is a bug that nicely allows us to not see failed cards twice in a row but schedules things off by one
if (_previousCardIntervalData.interval >= _activeCards[i].interval)
{
continue;
}
else
{
break;
}
}
_activeCards.Insert(insertAt, _previousCardIntervalData);
_database.AddHistoryEntry(_previousCardIntervalData.card, trialPerformance);
}
public CardHistoryEntry[] GetHistory(int cardID)
{
List <CardHistoryEntry> historyEntries = new List <CardHistoryEntry>();
string getHistoryQuery = string.Format("select * from CardHistories where Card='{0}'", cardID);
SQLiteDataReader dataReader = ExecuteReaderQuery(getHistoryQuery);
while (dataReader.Read())
{
DateTime dateTime = new DateTime(Convert.ToInt64(dataReader["DateTime"]));
TrialPerformance trialPerformance = (TrialPerformance)Convert.ToInt32(dataReader["Success"]);
var historyEntry = new CardHistoryEntry(dateTime, trialPerformance);
historyEntries.Add(historyEntry);
}
return(historyEntries.ToArray());
}
public abstract Card GetNextCard(TrialPerformance trialPerformance);
public void AddHistoryEntry(TrialPerformance trialPerformance) // TODO Violating SRP? Move history management to another class?
{
var entry = new CardHistoryEntry(DateTime.Now, trialPerformance);
HistoryEntries.Add(entry);
}
private void GetNextCard(TrialPerformance trialPerformance)
{
_currentCard = _myDeck.GetNextCard(_database, trialPerformance);
ShowingFront = true;
RefreshTextDisplay();
}
public void AddHistoryEntry(Card card, TrialPerformance trialPerformance)
{
AddHistoryEntryToDatabase(card, trialPerformance);
}
public Card GetNextCard(Database database, TrialPerformance trialPerformance)
{
return(_cardServer.GetNextCard(trialPerformance));
}
public CardHistoryEntry(DateTime entryTime, TrialPerformance trialPerformance)
{
EntryTime = entryTime;
TrialPerformance = trialPerformance;
}
