public RevisionSession StartRevisionSession(DateTimeOffset?now = null)
{
if (CurrentRevisionSessionId != null)
{
throw new InvalidOperationException("An uncompleted revision session exists");
}
now ??= DateTimeOffset.UtcNow;
var cardsReadyForSession = _cardBoxes
.SelectMany(b => b.Cards.Select(c => new
{
box = b,
card = c
}).Where(bc => bc.card.CardBoxChangedDate != null &&
bc.card.CardBoxChangedDate.Value.AddDays(bc.box.RevisionDelay) <= now))
.Select(bc => bc.card)
.ToList();
// instances of owned types cannot be shared between multiple owners
// See: https://docs.microsoft.com/en-us/ef/core/modeling/owned-entities
var sessionId = Guid.NewGuid();
var sessionCards = cardsReadyForSession
.Select(c => new SessionCard(sessionId, c))
.ToList();
var session = new RevisionSession(sessionId, Id, sessionCards);
CurrentRevisionSessionId = session.Id;
return(session);
}
public void ProcessCardsFromRevisionSession(RevisionSession revisionSession,
DateTimeOffset?dateTime = null)
{
if (Id != revisionSession.CardBoxSetId)
{
throw new InvalidOperationException("The revision session was created from other card box set");
}
if (CurrentRevisionSessionId != revisionSession.Id)
{
throw new InvalidOperationException(
"The revision session doesn't match with the current revision session of the set");
}
if (_completedRevisionSessionIds.Any(id => id.Value == revisionSession.Id))
{
return;
}
if (revisionSession.Status != RevisionSessionStatus.Completed ||
revisionSession.SessionCards.Any(c => c.Status == SessionCardStatus.NotAnswered))
{
throw new DomainException.RevisionSessionNotCompletedException();
}
var splittedCardIds = revisionSession.SessionCards
.GroupBy(c => c.Status)
.ToDictionary(c => c.Key, x => x.Select(c => c.CardId).ToArray());
if (splittedCardIds.TryGetValue(SessionCardStatus.AnsweredCorrectly, out var answeredCorrectlyCardIds))
{
foreach (var cardId in answeredCorrectlyCardIds)
{
PromoteCard(cardId, dateTime);
}
}
if (splittedCardIds.TryGetValue(SessionCardStatus.AnsweredWrong, out var answeredWrongCardIds))
{
foreach (var cardId in answeredWrongCardIds)
{
DemoteCard(cardId, dateTime);
}
}
_completedRevisionSessionIds.Add(new CompletedRevisionSessionId(revisionSession.Id));
CurrentRevisionSessionId = null;
}
public void AddNew(RevisionSession revisionSession)
{
_db.RevisionSessions.Add(revisionSession);
}
