/// <summary>
/// To be tied to PatientsSorted. Prints changes to console and to file "fileName". Also 'ticks' the cancellation-token if there are no patients present
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void OnPatientsSorted(object sender, PatientsSortedEventArgs args)
{
string toWrite = $"{args.PatientsMovedToICU} patients was moved to ICU, which now has {args.PatientsInICU} patients.\n" +
$"{args.PatientsMovedToSanatorium} patients was moved to the Sanatorium, which now has {args.PatientsInSanatorium} patients.\n";
lock (this)
{
File.AppendAllText(fileName, toWrite);
}
Console.Write(toWrite);
if (args.PatientsInSanatorium == 0 && args.PatientsInICU == 0)
{
args.CancellationRequested = true;
}
}
/// <summary>
/// Simulates filling up the ICU and Sanatorium with patients according to symptom-level and patients age. Throws event PatientsSorted when done and
/// if there are no more patients in neither the sanatorium or the queue, sets the cancellationToken to true
/// </summary>
public void SimulatePatientSorting()
{
PatientsSortedEventArgs args = new PatientsSortedEventArgs();
while (!args.CancellationRequested)
{
//Reset the args values
args.PatientsMovedToSanatorium = 0;
args.PatientsMovedToICU = 0;
Thread.Sleep(5000);
using (var hospitalContext = new HospitalContext())
{
var patientsInICU = (from patient in hospitalContext.Patients
where patient.Status == PatientStatus.ICU
select patient).ToList();
args.PatientsInICU = patientsInICU.Count;
//Check if ICU is full, otherwise, fill it
if (patientsInICU.Count < maxICU)
{
var patientsToMove = (from patient in hospitalContext.Patients
where patient.Status == PatientStatus.Queue || patient.Status == PatientStatus.Sanatorium
orderby patient.SymptomLevel descending, patient.BirthDate ascending
select patient).Take(maxICU - patientsInICU.Count).ToList();
//Change status of the patients provided, to ICU
for (int i = 0; i < patientsToMove.Count; i++)
{
patientsToMove[i].Status = PatientStatus.ICU;
}
args.PatientsMovedToICU = patientsToMove.Count;
args.PatientsInICU += patientsToMove.Count;
}
hospitalContext.SaveChanges();
var patientsInSanatorium = (from patient in hospitalContext.Patients
where patient.Status == PatientStatus.Sanatorium
select patient).ToList();
args.PatientsInSanatorium = patientsInSanatorium.Count;
//Check if Sanatorium is full, otherwise, fill it
if (patientsInSanatorium.Count < maxSanatorium)
{
var patientsToMove = (from patient in hospitalContext.Patients
where patient.Status == PatientStatus.Queue
orderby patient.SymptomLevel descending, patient.BirthDate ascending
select patient).Take(maxSanatorium - patientsInSanatorium.Count).ToList();
//Change status of the patients provided, to Sanatorium
for (int i = 0; i < patientsToMove.Count; i++)
{
patientsToMove[i].Status = PatientStatus.Sanatorium;
}
args.PatientsMovedToSanatorium = patientsToMove.Count;
args.PatientsInSanatorium += patientsToMove.Count;
}
hospitalContext.SaveChanges();
}
PatientsSorted?.Invoke(this, args);
//If there are no patients left, stop the thread
if (args.PatientsInICU == 0 && args.PatientsInSanatorium == 0)
{
break;
}
}
}