ДЗ Поезда 3

using System;
using System.Collections.Generic;

namespace TrainPlanner
{
    class Program
    {
        static void Main(string[] args)
        {
            const int CommandNewTrainPlan = 1;
            const int CommandExit = 2;

            TrainPlan planner = new TrainPlan();
            bool isRunning = true;

            while (isRunning)
            {
                Console.Clear();
                planner.ShowCurrentRoute();
                Console.WriteLine($"{CommandNewTrainPlan} - Задать новый рейс\n{CommandExit} - Выход");
                int userInput = UserUtils.GetNumberFromUser();

                switch (userInput)
                {
                    case CommandNewTrainPlan:
                        planner.CreateTrainPlan();
                        break;

                    case CommandExit:
                        isRunning = false;
                        break;
                }
            }
        }

        class UserUtils
        {
            public static int GetNumberFromUser()
            {
                string userInput;
                int userNumber;
                bool isNumber = false;

                do
                {
                    userInput = Console.ReadLine();
                    isNumber = int.TryParse(userInput, out userNumber);
                }
                while (isNumber == false);

                return userNumber;
            }
        }

        class Car
        {
            public Car(int carCapacity)
            {
                Capacity = carCapacity;
            }

            public int Capacity { get; private set; }
        }

        class Train
        {
            private string _route;
            private List<Car> _cars;
            private bool _isEnRoute;
            private int _occupiedPlaces;

            public Train()
            {
                _cars = new List<Car>();
            }

            public int Capacity { get; private set; }

            public void SetRoute(string routeTitle)
            {
                _route = routeTitle;
            }

            public void InsertCar(Car car)
            {
                Capacity += car.Capacity;
                _cars.Add(car);
            }

            public void Run()
            {
                _isEnRoute = true;
                Console.WriteLine("Поезд отправлен");
            }

            public void RegisterPassengers(int passengersNum)
            {
                _occupiedPlaces = passengersNum;
            }

            public void ShowInfo()
            {
                if (_isEnRoute)
                {
                    Console.WriteLine($"Поезд <{_route}> - всего мест:{Capacity} - из них занято: {_occupiedPlaces}");
                }
                else
                {
                    Console.WriteLine("Состав не сформирован");
                }
            }
        }

        class TrainPlan
        {
            private Train _processedTrain;
            private int _soldTickets;
            private int _maxCarCapacity = 50;
            private int _minCarCapacity = 30;
            private int _maxTickets = 1000;
            private int _minTickets = 10;

            public void CreateRoute()
            {
                _processedTrain = new Train();
                Console.WriteLine("Введите маршрут");
                _processedTrain.SetRoute(Console.ReadLine());
            }

            public void SellTickets()
            {
                Random rand = new Random();
                _soldTickets = rand.Next(_minTickets, _maxTickets);
                Console.WriteLine($"Продано {_soldTickets} билетов");
            }

            public void FormTrain()
            {
                Random rand = new Random();
                int carCapacity;

                while (_processedTrain.Capacity < _soldTickets)
                {
                    carCapacity = rand.Next(_minCarCapacity, _maxCarCapacity);
                    _processedTrain.InsertCar(new Car(carCapacity));
                }

                _processedTrain.RegisterPassengers(_soldTickets);
            }

            public Train RunTrain()
            {
                _processedTrain.Run();
                _processedTrain.ShowInfo();
                return _processedTrain;
            }

            public void CreateTrainPlan()
            {
                CreateRoute();
                SellTickets();
                FormTrain();
                RunTrain();
                Console.ReadKey();
            }

            public void ShowCurrentRoute()
            {
                if(_processedTrain == null)
                    Console.WriteLine("Рейсы отсутствуют");
                else
                   _processedTrain.ShowInfo();
            }
        }
    }
}