78 lines
No EOL
2.5 KiB
C#
78 lines
No EOL
2.5 KiB
C#
namespace WaitingRoom;
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/// <summary>
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/// Represents the waiting room at a doctor's office.
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/// Keeps an emergency and a normal waiting queue.
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/// Emergency patients are treated first; patients within the same queue are
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/// treated according to their arrival time.
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/// </summary>
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public sealed class WaitingRoom
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{
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private readonly PatientQueue _emergencyQueue = new();
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private readonly PatientQueue _normalQueue = new();
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/// <summary>
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/// Gets the current number of emergency patients waiting
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/// </summary>
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public int CountEmergency => _emergencyQueue.Size;
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/// <summary>
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/// Gets the current number of normal patients waiting
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/// </summary>
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public int CountNormal => _normalQueue.Size;
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/// <summary>
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/// Gets the current number of all patients waiting
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/// </summary>
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public int CountAll => CountEmergency + CountNormal;
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/// <summary>
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/// Creates a string representation of the waiting room, showing statistics
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/// about waiting patients
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/// </summary>
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/// <returns>String representation of the waiting room</returns>
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public override string ToString() => $"{CountEmergency} Emergency {CountNormal} Normal";
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/// <summary>
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/// Admits a new patient to the waiting room.
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/// Patient will be added to either the normal or the emergency queue, depending on its state.
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/// </summary>
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/// <param name="patient">Patient to admit</param>
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public void AddPatient(Patient patient)
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{
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if (patient.IsEmergency)
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{
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_emergencyQueue.Enqueue(patient);
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}
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else
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{
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_normalQueue.Enqueue(patient);
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}
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}
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/// <summary>
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/// Returns the next patient to be treated, removing it from its waiting queue
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/// </summary>
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/// <returns>Next patient to treat, if any</returns>
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public Patient? Next()
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{
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var emergency = _emergencyQueue.Dequeue();
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return emergency ?? _normalQueue.Dequeue();
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}
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/// <summary>
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/// Promotes a patient to be an emergency case.
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/// The patient has to be moved from the normal to the emergency queue.
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/// </summary>
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/// <param name="patient">Patient to declare an emergency for</param>
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public void SetPatientToEmergency(Patient patient)
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{
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if (!_normalQueue.Remove(patient))
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{
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return;
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}
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patient.IsEmergency = true;
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_emergencyQueue.Enqueue(patient);
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}
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} |