enum Body {
    case head
    case hand
  case leg
}

protocol DoctorDelegate {
  var history: [Body: String] { get set }
  func heal(name: String, symptom: Body, temperature: Int)
}

protocol PatientProtocol {
  var name: String { get set }
  var temperature: Int { get set }
  var symptom: Body { get set }
  var doctor: DoctorDelegate? { get set }
  init(name: String, symptom: Body, temperature: Int, doctor: DoctorDelegate)
}

class Doctor: DoctorDelegate {
  var history: [Body: String] = [:]
  func heal(name: String, symptom: Body, temperature: Int){
    history[symptom] = name
    print("I healed \(name). \(symptom) and temperature \(temperature)")
  }

}

class BadDoctor: DoctorDelegate {
  var history: [Body: String] = [:]
  func heal(name: String, symptom: Body, temperature: Int) {
    print("Vdrug samo proidet, dergis', \(name)")
  }
}

class Patient: PatientProtocol {
  var name: String
  var temperature: Int
  var symptom: Body
  var doctor: DoctorDelegate?

  func callDoctor(){
    doctor?.heal(name: name, symptom: symptom, temperature: temperature)
  }

  required init(name: String, symptom: Body, temperature: Int, doctor: DoctorDelegate) {
    self.name = name
    self.temperature = temperature
    self.symptom = symptom
    self.doctor = doctor
  }
}

var doctor = Doctor()
var badDoctor = BadDoctor()
var mark = Patient(name: "Mark", symptom: Body.head, temperature: 38, doctor: doctor)
var alex = Patient(name: "Alex", symptom: Body.leg, temperature: 37, doctor: badDoctor)
var peter = Patient(name: "Peter", symptom: Body.hand, temperature: 39, doctor: doctor)

var patients = [mark, alex, peter]

for patient in patients {
  patient.callDoctor()
}

print(doctor.history)