CarService

using System;
using System.Collections.Generic;

namespace Avtoservis
{
    class Program
    {
        static void Main(string[] args)
        {
            Detail cardanShaft = new Detail(3200, "Карданный вал");
            Detail crankshaftSeals = new Detail(200, "Сальники коленвала");
            Detail gasolinePump = new Detail(5400, "Бензонасос");
            Detail stoppingSupport = new Detail(2900, "Тормозной суппорт");
            Detail ignitionSwitch  = new Detail(300, "Выключатель зажигания");

            Dictionary<Detail, int> details = new Dictionary<Detail, int>();

            details.Add(cardanShaft, 3);
            details.Add(crankshaftSeals, 50);
            details.Add(gasolinePump, 1);
            details.Add(stoppingSupport, 8);

            CarService carService = new CarService(new Balance(1000), new Warehouse(details));

            Car car1 = new Car(new Breaking(cardanShaft, 2000, -1500, "Повреждение крданного вала."));
            Car car2 = new Car(new Breaking(ignitionSwitch, 500, -500, "Не заводится."));

            carService.TakeCar(car1);
            Console.WriteLine();
            carService.TakeCar(car2);
        }
    }

    class CarService
    {
        private Balance _balance;
        private Warehouse _warehouse;

        public CarService(Balance balance, Warehouse warehouse)
        {
            _balance = balance;
            _warehouse = warehouse;
        }

        public void TakeCar(Car car)
        {
            Console.WriteLine($"Поступила машина. Поломка: {car.Breaking.Name}, необходимая деталь: {car.Breaking.NecessaryDetail.Name}");

            if (_warehouse.CheckAvailabilityDetail(car.Breaking.NecessaryDetail))
            {
                RenovateCar(car);
            }
            else
            {
                RefuseToRepair(car);
            }
        }

        private void RenovateCar(Car car)
        {
            Console.WriteLine("Машина принята в ремонт.");

            _warehouse.TakeDetail(car.Breaking.NecessaryDetail);

            int paid = car.Breaking.NecessaryDetail.Price + car.Breaking.PriceForWork;

            Console.WriteLine("Ремонт выполнен.");
            _balance.CalculateTheClient(paid);
        }

        private void RefuseToRepair(Car car)
        {
            Console.WriteLine("В ремонте отказано.");
            _balance.CalculateTheClient(car.Breaking.RefusalPenalty);
        }
    }

    class Balance
    {
        public int MoneyCount {get; private set;}

        public void CalculateTheClient(int paid)
        {
            MoneyCount += paid;

            if(paid > 0)
            {
                Console.WriteLine($"Получена плата в размере: {paid}. Баланс: {MoneyCount}");
            }
            else
            {
                Console.WriteLine($"Уплачен штраф в размере: {paid}. Баланс: {MoneyCount}");
            }
        }

        public Balance(int money)
        {
            MoneyCount = money;
        }
    }

    class Warehouse
    {
        private Dictionary<Detail, int> _details;

        public Warehouse(Dictionary<Detail, int> details)
        {
            _details = details;
        }

        public bool CheckAvailabilityDetail(Detail detail)
        {
            if (_details.ContainsKey(detail) && _details[detail] > 0)
            {
                Console.WriteLine($"Деталь '{detail.Name}' есть в наличии.");
                return true;
            }
            else
            {
                Console.WriteLine($"Детали '{detail.Name}' нет в наличии.");
                return false;
            }
        }

        public void TakeDetail(Detail detail)
        {
            _details[detail] -= 1;
        }
    }

    class Detail
    {
        public int Price { get; private set;}
        public string Name { get; private set;}

        public Detail(int price, string name)
        {
            Price = price;
            Name = name;
        }
    }

    class Car
    {
        public Breaking Breaking { get; private set; }

        public Car(Breaking breaking)
        {
            Breaking = breaking;
        }
    }

    class Breaking
    {
        private int _refusalPenalty;
        public Detail NecessaryDetail { get; private set; }
        public int PriceForWork { get; private set; }
        public string Name { get; private set; }
        public int RefusalPenalty
        {
            get
            {
                return _refusalPenalty;
            }
            private set
            {
                if (value <= 0)
                    _refusalPenalty = value;
                else
                    _refusalPenalty = -value;
            }
        }

        public Breaking(Detail detail, int price, int fine, string name)
        {
            NecessaryDetail = detail;
            PriceForWork = price;
            RefusalPenalty = fine;
            Name = name;
        }
    }
}