task40

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
    public static void Main(string[] args)
    {
        Hospital hospital = new Hospital();
        bool isWork = true;

        while (isWork)
            isWork = hospital.Update();
    }
}

public class Hospital
{
    private Random _random;
    private List<Patient> _patients;

    private string[] _diseaseNames = { "Cold", "Diarrhea", "Covid", "Tuberculosis" };
    private string[] _names = { "Mike", "Nick", "Valera", "Virgil", "Dante" };
    private string[] _choicesNames = { "Order By Age.", "Order By Name.", "Order By Name of Disease.", "Exit." };

    private int _ageMinimum = 14;
    private int _ageMaximum = 89;

    private int _amountPrisonersMinimum = 10;
    private int _amountPrisonersMaximum = 50;

    public Hospital()
    {
        _patients = new List<Patient>();
        _random = new Random();
        CreatePatients();
    }

    public bool Update()
    {
        int choice = InputChoice();
        bool isWork = true;

        switch (choice)
        {
            case 0:
                OrderByAge();
                PrintPatients(_patients);
                break;
            case 1:
                OrderByName();
                PrintPatients(_patients);
                break;
            case 2:
                string diseaseName = InputDiseaseName();
                var patientsFiltered = OrderByDiseaseName(diseaseName);
                PrintPatients(patientsFiltered);
                break;
            case 3:
                isWork = false;
                break;
        }

        return isWork;
    }

    private string InputDiseaseName()
    {
        string diseaseName = "";
        bool isInput = true;

        do
        {
            PrintDesisease();
            diseaseName = Console.ReadLine();
            isInput = !HasDiseaseName(diseaseName);
        }
        while (isInput);

        return diseaseName;
    }

    private int InputChoice()
    {
        int choice;
        bool isInput = true;
        bool isParse = false;

        do
        {
            PrintChoises();
            isParse = int.TryParse(Console.ReadLine(), out choice);

            if (isParse && choice >= 0 && choice < _choicesNames.Length)
                isInput = false;
        }
        while (isInput);

        return choice;
    }

    private bool HasDiseaseName(string disease)
    {
        bool hasDiseaseName = false;

        foreach (string diseaseName in _diseaseNames)
        {
            if (diseaseName.Equals(disease))
            {
                hasDiseaseName = true;
                break;
            }
        }

        return hasDiseaseName;
    }

    private void OrderByName()
    {
        _patients = _patients.OrderBy(patient => patient.Name).ToList();
    }

    private void OrderByAge()
    {
        _patients = _patients.OrderBy(patient => patient.Age).ToList();
    }

    private List<Patient> OrderByDiseaseName(string diseaseName)
    {
        return _patients.Where(pateint => pateint.DiseaseName.Equals(diseaseName)).ToList();
    }

    private void PrintPatients(List<Patient> patients)
    {
        Console.WriteLine();

        foreach (Patient prisoner in patients)
            Console.WriteLine(prisoner);
    }

    private void PrintDesisease()
    {
        Console.WriteLine();

        foreach (string diseaseName in _diseaseNames)
            Console.WriteLine(diseaseName);

        Console.WriteLine("Input name of disease : ");
    }

    private void PrintChoises()
    {
        Console.WriteLine();

        for (int i = 0; i < _choicesNames.Length; ++i)
            Console.WriteLine($"{i}. {_choicesNames[i]}");

        Console.WriteLine("Input your choice : ");
    }

    private void CreatePatients()
    {
        int amountCriminals = _random.Next(_amountPrisonersMinimum, _amountPrisonersMaximum);

        string name;
        string diseaseName;
        int age;

        for (int i = 0; i < amountCriminals; ++i)
        {
            name = _names[_random.Next(_names.Length)];
            diseaseName = _diseaseNames[_random.Next(_diseaseNames.Length)];
            age = _random.Next(_ageMinimum, _ageMaximum);
            _patients.Add(new Patient(name, diseaseName, age));
        }
    }
}

public class Patient
{
    public string Name { get; private set; }
    public int Age { get; private set; }
    public string DiseaseName { get; private set; }

    public Patient(string name, string diseaseName, int age)
    {
        Name = name;
        DiseaseName = diseaseName;
        Age = age;
    }

    public override string ToString()
    {
        string result = "";
        result += String.Format($"{Name},{Age} - {DiseaseName}");
        return result;
    }
}