Directory

using System;
using System.Collections.Generic;
using System.Globalization;

namespace Directory
{
    class Showroom
    {
        public readonly int income;
        private string name, classification;
        public readonly DateTime openingDate;
        public Showroom()
        {
            Console.Write("\nInput the showroom's name: ");
            name = Console.ReadLine();

            Console.Write("\nInput the classification: ");
            classification = Console.ReadLine();

            Console.Write("\nInput opening date (dd.MM.yyyy): ");
            openingDate = DateTime.ParseExact(Console.ReadLine(), "dd.MM.yyyy", null);

            Console.Write("\nInput the income: ");
            income = Convert.ToInt32(Console.ReadLine());

            Console.Clear();
        }
        public void PrintData()
        {
            Console.WriteLine($"Name: {name}");
            Console.WriteLine($"Classification: {classification}");
            Console.WriteLine($"Opening date: {openingDate.ToString().Replace(" 0:00:00", "")}");
            Console.WriteLine($"Income: {income}\n");
        }
    }

    class Auto
    {
        private string brand, model, slogan, steeringPosition;
        private int enginePower, length, width, seatsNumber;
        private DateTime saleDate, guaranteeExpires;
        public Auto()
        {
            Console.Write("\nInput auto brand: ");
            brand = Console.ReadLine();

            Console.Write("\nInput the model name: ");
            model = Console.ReadLine();

            Console.Write("\nInput the slogan: ");
            slogan = Console.ReadLine();

            Console.Write("\nInput the engine power: ");
            enginePower = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput length: ");
            length = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput width: ");
            width = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput steering position: ");
            steeringPosition = Console.ReadLine();

            Console.Write("\nInput the number of seats: ");
            seatsNumber = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput sale date (dd.MM.yyyy): ");
            saleDate = DateTime.ParseExact(Console.ReadLine(), "dd.MM.yyyy", null);

            Console.Write("\nInput the guarantee expiration date (dd.MM.yyyy): ");
            guaranteeExpires = DateTime.ParseExact(Console.ReadLine(), "dd.MM.yyyy", null);

            Console.Clear();
        }
    }

    class Employee
    {
        private int ID, discount;
        private string name, surname, post, homeAddress;
        private DateTime birthDate, recruitmentDate;
        public Employee()
        {
            Console.Write("\nInput ID: ");
            ID = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput first name: ");
            name = Console.ReadLine();

            Console.Write("\nInput last name: ");
            surname = Console.ReadLine();

            Console.Write("\nInput post: ");
            post = Console.ReadLine();

            Console.Write("\nInput discount value (in percents): ");
            discount = Convert.ToInt32(Console.ReadLine());

            Console.Write("\nInput home address: ");
            homeAddress = Console.ReadLine();

            Console.Write("\nInput birth date (dd.MM.yyyy): ");
            birthDate = DateTime.ParseExact(Console.ReadLine(), "dd.MM.yyyy", null);

            Console.Write("\nInput recruitment date (dd.MM.yyyy): ");
            recruitmentDate = DateTime.ParseExact(Console.ReadLine(), "dd.MM.yyyy", null);

            Console.Clear();
        }
    }

    class Program
    {
        private static List<Showroom> showrooms = new List<Showroom>();
        private static List<Auto> autos = new List<Auto>();
        private static List<Employee> employees = new List<Employee>();

        static void Main(string[] args)
        {
            Console.Title = "Directory (task #43)";
            while (true)
            {
                CallInterface();
                switch (Console.ReadLine())
                {
                    case "1":
                        showrooms.Add(new Showroom());
                        break;
                    case "2":
                        autos.Add(new Auto());
                        break;
                    case "3":
                        employees.Add(new Employee());
                        break;
                    case "4":
                        if (showrooms.Count > 0)
                        {
                            for (int i = 0, j = 1; i < showrooms.Count; i++)
                            {
                                if (showrooms[i].openingDate.DayOfWeek == DayOfWeek.Monday)
                                {
                                    if (j == 1)
                                    {
                                        Console.WriteLine("{0, 50}", "List of showrooms opened on Monday:");
                                    }
                                    Console.WriteLine($"-----{j++}-----");
                                    showrooms[i].PrintData();
                                }
                            }
                            Console.Write("\nPress any key to continue...");
                            Console.ReadKey();
                            Console.Clear();
                        }
                        else
                        {
                            Console.Clear();
                            Console.WriteLine("Error: There are no showrooms in the database!");
                        }
                        break;
                    case "5":
                        if (showrooms.Count > 0)
                        {
                            int averageIncome = 0;
                            for (int i = 0; i < showrooms.Count; i++)
                            {
                                averageIncome += showrooms[i].income;
                            }
                            averageIncome /= showrooms.Count;
                            Console.WriteLine($"The average income is {averageIncome}");
                            Console.Write("\nPress any key to continue...");
                            Console.ReadKey();
                            Console.Clear();
                        }
                        else
                        {
                            Console.Clear();
                            Console.WriteLine("Error: There are no showrooms in the database!");
                        }
                        break;
                    case "quit":
                        Environment.Exit(0);
                        break;
                    default:
                        Console.Clear();
                        Console.WriteLine("Error: Incorrect command!");
                        break;
                }
            }
        }

        static void CallInterface()
        {
            string[] allActions = { "1. Add a new showroom", "2. Add a new auto", "3. Add a new employee", "4. Show list of showrooms opened on Monday", "5. Show average showrooms' income" };
            void DrawBorder()
            {
                for (int i = 0; i < Console.WindowWidth; i++)
                {
                    Console.Write("=");
                }
            }
            void NewLine()
            {
                Console.Write("|");
                for (int i = 0; i < Console.WindowWidth - 2; i++)
                {
                    Console.Write(" ");
                }
                Console.Write("|");
            }
            void AddActions(string[] actions)
            {
                for (int i = 0; i < actions.Length; i++)
                {
                    Console.Write($"| {actions[i]}");
                    for (int j = 0; j < Console.WindowWidth - actions[i].Length - 3; j++)
                    {
                        Console.Write(" ");
                    }
                    Console.Write("|");
                    NewLine();
                }
            }

            DrawBorder();
            NewLine();
            AddActions(allActions);
            DrawBorder();
            Console.Write("{0, 122}", "quit - exit from the interface\n> ");
        }
    }
}