/// <summary>
/// Adds or updates a users answer. Creates new user if they're not in the cache,
/// otherwise update answer. returns the number of questions answered.
/// </summary>
public int AddOrUpdate(Answer updateAnswer)
{
List<CacheAnswer> listAnswers;
// Check for new user
if(!_answerCache.TryGetValue(updateAnswer.ProfileId, out listAnswers))
{
listAnswers = new List<CacheAnswer>();
_answerCache.Add(updateAnswer.ProfileId, listAnswers);
}
//Check if updating or adding new answer
for(int i=0; i < listAnswers.Count; i++)
{
var a = listAnswers[i];
if(a.QuestionId==updateAnswer.QuestionId)
{
a.ChoiceBit = updateAnswer.ChoiceBit();
a.ChoiceAccept = updateAnswer.ChoiceAccept;
a.ChoiceWeight = updateAnswer.ChoiceWeight;
a.LastAnswered = DateTime.Now;
//copy back to list since structs are passed by value
listAnswers[i] = a;
//found and updated answer, done
return listAnswers.Count;
}
}
//Got here: New answer
listAnswers.Add(new CacheAnswer
{
QuestionId = updateAnswer.QuestionId,
ChoiceBit = updateAnswer.ChoiceBit(),
ChoiceAccept = updateAnswer.ChoiceAccept,
ChoiceWeight = updateAnswer.ChoiceWeight,
LastAnswered = DateTime.Now
});
return listAnswers.Count;
}
/// <summary>
/// Returns true if the other answer matches my requirements
/// </summary>
public bool IsMatch(Answer otherAnswer)
{
return (otherAnswer.ChoiceBit() & ChoiceAccept) != 0;
}