private void InitSession()
{
var xml = new XmlQuestionRepository(Server.MapPath("/App_Data/Questions.xml"));
Session[SessionKeys.USER_KEY] = System.Guid.NewGuid().ToString();
Session[SessionKeys.QUESTIONS_KEY] = xml.GetQuestions();
Session[SessionKeys.STEP_KEY] = 0;
}
public decimal GetResult(int questionIndex, int answerIndex)
{
// Logging
using (var context = new LoggerContext())
{
var log = context.UserAnswerLogs.Where(q => q.QuestionNumber == questionIndex).FirstOrDefault();
if (log == null)
{
log = new UserAnswerLog()
{
QuestionNumber = questionIndex, FirstAnswerCount = 0, SecondAnswerCount = 0, ThirdAnswerCount = 0, FourthAnswerCount = 0
};
log = context.UserAnswerLogs.Add(log);
context.SaveChanges();
}
if (answerIndex == 0)
{
log.FirstAnswerCount++;
}
if (answerIndex == 1)
{
log.SecondAnswerCount++;
}
if (answerIndex == 2)
{
log.ThirdAnswerCount++;
}
if (answerIndex == 3)
{
log.FourthAnswerCount++;
}
context.SaveChanges();
}
using (var xmlReader = XmlReader.Create(_xmlUrl))
{
var questions = new XmlQuestionRepository(xmlReader).GetAll();
if (questions[questionIndex].CorrectAnswer == questions[questionIndex].Answers.ElementAt(answerIndex))
{
if (questionIndex != questions.Count - 1)
{
// Game still on
return(-1);
}
else
{
// Player wins
return(questions[questionIndex].Price);
}
}
else
{
// Calculating prize as first guaranteed question
return(CalculateResult(questionIndex));
}
}
}
public Question GetQuestion(int index)
{
using (var xmlReader = XmlReader.Create(_xmlUrl))
{
var questions = new XmlQuestionRepository(xmlReader).GetAll();
if (index > questions.Count - 1)
{
throw new IndexOutOfRangeException();
}
return(questions[index]);
}
}
private decimal CalculateResult(int index)
{
using (var xmlReader = XmlReader.Create(_xmlUrl))
{
var questions = new XmlQuestionRepository(xmlReader).GetAll();
while (true)
{
index--;
if (index == 12 || index == 8 || index == 4)
{
return(questions[index].Price);
}
if (index == -1)
{
return(0);
}
}
}
}
public bool[] GetTwoAnswers(int questionIndex)
{
using (var xmlReader = XmlReader.Create(_xmlUrl))
{
var result = new bool[4] {
true, true, true, true
};
var questions = new XmlQuestionRepository(xmlReader).GetAll();
var correctAnswerIndex = questions[questionIndex].Answers.ToList().IndexOf(questions[questionIndex].CorrectAnswer);
result[correctAnswerIndex] = false;
using (var context = new LoggerContext())
{
var log = context.UserAnswerLogs.Where(l => l.QuestionNumber == questionIndex).FirstOrDefault();
if (log == null)
{
var rand = new Random();
int i = rand.Next(4);
while (i == correctAnswerIndex)
{
i = rand.Next(4);
}
result[i] = false;
}
else
{
var stats = new int[] { log.FirstAnswerCount, log.SecondAnswerCount, log.ThirdAnswerCount, log.FourthAnswerCount, };
int indexOfMax = 0;
int max = -1;
for (int i = 0; i < 4; i++)
{
if (stats[i] >= max && i != correctAnswerIndex)
{
indexOfMax = i;
max = stats[i];
}
}
result[indexOfMax] = false;
}
}
return(result);
}
}
