public void CalculateCost()
{
this.cost = 0;
Dictionary<string, List<Course>> conferenceCourseCount = new Dictionary<string, List<Course>>();
foreach (RegistrationLine regLine in registeringLine)
{
if (conferenceCourseCount.ContainsKey(regLine.LineCourse.CourseConference))
{
conferenceCourseCount[regLine.LineCourse.CourseConference].Add(regLine.LineCourse);
}
else
{
conferenceCourseCount.Add(regLine.LineCourse.CourseConference, new List<Course>{regLine.LineCourse});
}
}
foreach(string regCon in conferenceCourseCount.Keys)
{
Conference newConference = new Conference(regCon);
if (conferenceCourseCount[regCon].Count == newConference.CoursesInConference.Count)
{
this.cost += newConference.WholeConferenceCost;
conferenceCourseCount[regCon].Select(course => course.Cost = 0).ToList();
}
else
{
if (newConference.GetPreviousRegCoursesInConference(registeringUser.Email)[0] + conferenceCourseCount[regCon].Count
== newConference.CoursesInConference.Count)
{
this.cost += newConference.WholeConferenceCost -
newConference.GetPreviousRegCoursesInConference(registeringUser.Email)[1];
conferenceCourseCount[regCon].Select(course => course.Cost = 0).ToList();
}
else
{
this.cost += conferenceCourseCount[regCon].Sum(x => x.Cost);
}
}
}
}