ООП-12

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

namespace Homework12
{
    internal class Program
    {
        static void Main(string[] args)
        {
            List<Book> books = new List<Book>
            {
                new Book("Title1", "Author1", 2005),
                new Book("Title2", "Author1", 2009),
                new Book("Title3", "Author2", 2013),
                new Book("Title4", "Author2", 1998),
            };

            Storage storage = new Storage(books);
            string userInput = null;

            bool isActive = true;
            while (isActive)
            {
                ChooseOption(userInput, storage, ref isActive);
                Console.ReadKey();
                Console.Clear();
            }
        }

        private static void ChooseOption(string input, Storage storage, ref bool isActive)
        {
            Console.WriteLine("Добавить книгу\n" +
                              "Убрать книгу\n" +
                              "Показать все книги\n" +
                              "Показать книги по указанному параметру\n" +
                              "Выход");

            input = Console.ReadLine();

            switch (input)
            {
                case "Добавить книгу":
                    storage.AddBook();
                    break;
                case "Убрать книгу":
                    storage.RemoveBook();
                    break;
                case "Показать все книги":
                    storage.ShowBooks();
                    break;
                case "Показать книги по указанному параметру":
                    storage.ShowBooks(storage.SortBooks());
                    break;
                case "Выход":
                    isActive = false;
                    break;
                default:
                    throw new NullReferenceException();
            }
        }
    }

    class Book
    {
        public string Title { get; private set; }
        public string Author { get; private set; }
        public int ReleaseDate { get; private set; }

        public Book(string title, string author, int releasaeDate)
        {
            Title = title;
            Author = author;
            ReleaseDate = releasaeDate;
        }

        public void ShowInfo()
        {
            Console.WriteLine($"|Название: {Title}|Автор: {Author}|Год выпуска: {ReleaseDate}|");
        }
    }

    class Storage
    {
        private List<Book> _books;

        public Storage(List<Book> books = null)
        {
            _books = books;
        }

        public void AddBook()
        {
            string userTitle;
            string userAuthor;
            int userReleaseDate;

            Console.WriteLine("Введите название:");
            userTitle = Console.ReadLine();
            Console.WriteLine("Введите автора:");
            userAuthor = Console.ReadLine();
            Console.WriteLine("Введи год выпуска:");
            userReleaseDate = int.Parse(Console.ReadLine());
            Console.WriteLine("Новая книга добавлена!\n" +
                              $"|Название: {userTitle}|Автор: {userAuthor}|Год выпуска: {userReleaseDate}|");

            _books.Add(new Book(userTitle, userAuthor, userReleaseDate));
        }

        public void RemoveBook()
        {
            ShowBooks();

            Console.Write("Номер книги, которую нужно убрать:");
            int number = int.Parse(Console.ReadLine());

            if (number >= 0 && number < _books.Count)
                _books.RemoveAt(number);
            else
                throw new ArgumentOutOfRangeException();
        }

        public void ShowBooks()
        {
            if (_books != null)
                foreach (var book in _books)
                    book.ShowInfo();
            else
                throw new NullReferenceException();
        }

        public void ShowBooks(List<Book> books)
        {
            if (books != null)
                foreach (var book in books)
                    book.ShowInfo();
            else
                throw new NullReferenceException();
        }

        public List<Book> SortBooks()
        {
            if (_books == null)
                throw new NullReferenceException();

            Console.WriteLine("По какому параметру сортировать?");
            string input = Console.ReadLine();

            switch (input)
            {
                case "по названию":
                    return _books.Where(book => book.Title == Console.ReadLine()).OrderBy(book => book.Title).ToList();
                case "по автору":
                    return _books.Where(book => book.Author == Console.ReadLine()).OrderBy(book => book.Author).ToList();
                case "по году выпуска":
                    return _books.Where(book => book.ReleaseDate == int.Parse(Console.ReadLine())).OrderBy(book => book.ReleaseDate).ToList();
                default:
                    return null;
            }
        }
    }
}