public ActionResult DeleteApplicant(Applicant applicant)
{
// Confirm that an applicant with the same ID exists in the database
var queriedApplicant = db.Applicants.Find(applicant.ID);
if (queriedApplicant == null)
{
return(HttpNotFound());
}
// Remove from lists (and run lottery to place waitlisted applicant if the student was selected)
if (WasLotteryRun())
{
var waitlisteds = db.Waitlisteds.Where(w => w.ApplicantID == applicant.ID).ToList();
db.Waitlisteds.RemoveRange(waitlisteds);
var selected = db.Selecteds.FirstOrDefault(s => s.ApplicantID == applicant.ID);
if (selected != null)
{
var school = selected.School;
// Remove the selected applicant
db.Selecteds.Remove(selected);
// Get the waitlist to pass into the lottery algorithm
var waitlistedApplicants = Utils.GetApplicants(db.Waitlisteds.Where(w => w.SchoolID == school.ID).OrderBy(w => w.Rank).ToList());
// Run the lottery to fill the slot
var lottery = new SchoolLottery(db);
lottery.Run(school, waitlistedApplicants, false);
// Remove the newly selected applicants from the selected school from other waitlists
// (does it for all selecteds in the school since we don't know which student was the one filled in at this point)
var newSelecteds = school.Selecteds;
var removeWaitlisteds = new List <Waitlisted>();
foreach (var newSelected in newSelecteds)
{
var otherApplicantWaitlisteds =
db.Waitlisteds.Where(w => w.ApplicantID == newSelected.ApplicantID).ToList();
removeWaitlisteds.AddRange(otherApplicantWaitlisteds);
}
db.Waitlisteds.RemoveRange(removeWaitlisteds);
}
}
// Remove the applicant entirely from the system
db.Applicants.Remove(queriedApplicant);
db.SaveChanges();
return(RedirectToAction("ViewApplicants"));
}
public ActionResult RunLottery()
{
if (!WasLotteryRun())
{
// Run the selection algorithm for each school
var schoolLottery = new SchoolLottery(db);
foreach (var school in db.Schools.ToList())
{
schoolLottery.Run(school);
}
// Make sure applicants were not selected for more than one school (or waitlisted on any others if they were selected)
var reconciler = new CrossSchoolReconciler(db);
reconciler.Reconcile();
// Save a record that the lottery was run
var globalConfig = db.GlobalConfigs.First();
globalConfig.LotteryRunDate = DateTime.Now;
db.GlobalConfigs.AddOrUpdate(globalConfig);
db.SaveChanges();
}
return(RedirectToAction("ViewApplicants"));
}
