public void ModifyCard(RevisionCardSQL revisionCard, string newTopic,
string newQuestion, string newAnswer)
{
try
{
if (string.IsNullOrWhiteSpace(newTopic) || string.IsNullOrWhiteSpace(newQuestion) || string.IsNullOrWhiteSpace(newAnswer))
{
throw new Exception("Topic, Question or Answer not filled in correctly!");
}
dataModel.SaveDeleteCard(revisionCard);
revisionCard.Topic = newTopic;
revisionCard.Question = newQuestion;
revisionCard.Answer = newAnswer;
dataModel.SaveCard(revisionCard);
OnUpdate?.Invoke();
}
catch (Exception ex)
{
throw ex;
}
}
public void AddNewCard(string topicName, string question, string answer, bool isNewTopic)
{
try
{
if (string.IsNullOrWhiteSpace(topicName) || string.IsNullOrWhiteSpace(question) || string.IsNullOrWhiteSpace(answer))
{
throw new Exception("Topic, Question or Answer not filled in correctly!");
}
var newRevisionCard = new RevisionCardSQL {
Topic = topicName, Question = question, Answer = answer
};
var topic = GetTopicByName(topicName);
//If topic is entered by user but topic of same name already exists
//then throw error so that user can assign card to already existing topic
if (topic != null && isNewTopic)
{
throw new Exception("Topic of name " + topicName + " already exists!");
}
else if (topic == null)
{
AddNewTopic(topicName);
}
dataModel.SaveCard(newRevisionCard);
OnUpdate?.Invoke();
}
catch (Exception ex)
{
throw ex;
}
}
public void DeleteCard(RevisionCardSQL cardToRemove)
{
try
{
dataModel.SaveDeleteCard(cardToRemove);
OnUpdate?.Invoke();
}
catch (Exception ex)
{
throw ex;
}
}
public void SaveDeleteCard(RevisionCardSQL revisionCard)
{
var topic = GetTopicByName(revisionCard.Topic);
if (!RevisionGroups[topic].Contains(revisionCard))
{
return;
}
RevisionGroups[topic].Remove(revisionCard);
conn.Delete(revisionCard);
topic.CardCount -= 1;
SaveTopic(topic); //Save topic card count decrease
}
public void SaveCard(RevisionCardSQL revisionCard)
{
var topic = GetTopicByName(revisionCard.Topic);
if (RevisionGroups[topic].Contains(revisionCard)) // Revision card present so must be updated
{
conn.Update(revisionCard);
}
else // Revision card not present so must be saved as new
{
RevisionGroups[topic].Add(revisionCard);
conn.Insert(revisionCard);
topic.CardCount += 1;
SaveTopic(topic); // Save topic card count increase
}
}