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

namespace ConsoleApplication1
{
    class Book
    {
        public string AuthorName;
        public string Genre;
        public int Year;
        public int AmountPages;
        public string Name;
        public string Content;
        public Book(string a)
        {
            Name = a;
        }
        public static HomeLibr operator +(Book a, Book b)
        {
            HomeLibr s = new HomeLibr();
            s = s + a;
            s = s + b;
            return s;
        }
    }
    class HomeLibr
    {
        public List<Book> Books = new List<Book>();
        public HomeLibr() { }
        public static HomeLibr operator +(HomeLibr a, Book b)
        {
            a.Books.Add(b);
            return a;
        }
        public static HomeLibr operator -(HomeLibr a, Book b)
        {
            foreach (Book z in a.Books)
            {
                if (z == b)
                {
                    a.Books.Remove(z);
                    return a;
                }
            }
            return a;
        }
        public Book Search(string s, string s2, ref bool check)
        {
            check = false;
            int c = 0;
            Book Exit = new Book("");
            if (s == "Name")
            {
                foreach (Book b in Books)
                {
                    if (b.Name == s2)
                    {
                        Exit = b;
                        check = true;
                        c++;
                    }
                }
            }
            else
                if (s == "AuthorName")
                {
                    foreach (Book b in Books)
                    {
                        if (b.AuthorName == s2)
                        {
                            Exit = b;
                            check = true;
                            c++;
                        }
                    }
                }
                else
                    if (s == "Genre")
                    {
                        foreach (Book b in Books)
                        {
                            if (b.Genre == s2)
                            {
                                Exit = b;
                                check = true;
                                c++;
                            }
                        }
                    }
                    else
                    {
                        Console.WriteLine("Неверные параметры поиска");
                        Environment.Exit(0);
                    }
            if (!check)
                Console.WriteLine("По данным параметрам ничего не найдено \n");
            if (c > 1)
                Console.WriteLine("Книг с параметром {0} {1}, используйте другой параметр", s, c);
            return Exit;
        }
        public Book Search(string s, int d, ref bool check)
        {
            check = false;
            int c = 0;
            Book Exit = new Book("");
            if (s == "Year")
            {
                foreach (Book b in Books)
                {
                    if (b.Year == d)
                    {
                        Exit = b;
                        check = true;
                        c++;
                    }
                }
            }
            else
                if (s == "Number")
                {
                    Exit = Books[d];
                    check = true;
                }
                else
                {
                    Console.WriteLine("Неверные параметры поиска");
                    Environment.Exit(0);
                }
            if (!check)
                Console.WriteLine("По данным параметрам ничего не найдено\n");
            if (c > 1)
                Console.WriteLine("Книг с параметром {0} {1}, используйте другой параметр", s, c);
            return Exit;


        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Book a = new Book("1");
                a.AuthorName = "2";
                a.Genre = "3";
                a.Year = 4;
                a.Name = "5";
                Book b = new Book("2");
                b.AuthorName = "3";
                b.Genre = "4";
                b.Year = 5;
                b.Name = "6";
                Book c = new Book("3");
                c.AuthorName = "4";
                c.Genre = "5";
                c.Year = 6;
                c.Name = "7";
                HomeLibr Libr = new HomeLibr();
                Libr = Libr + a;
                Libr = Libr + b;
                Libr = Libr + c;
                Console.Write("Книги библиотеки №1 - ");
                foreach (Book q in Libr.Books)
                {
                    Console.Write(q.Name + " ");
                }
                Console.WriteLine("\n");
                Libr = Libr - b;
                Console.Write("Книги библиотеки №1 после удаления книги {0} - ", b.Name);
                foreach (Book q in Libr.Books)
                {
                    Console.Write(q.Name + " ");
                }
                Console.WriteLine("\n");
                HomeLibr Libr2 = a + b;
                Console.Write("Книги библиотеки №2, созданной складываем книг {0} и {1}  - ", a.Name, b.Name);
                foreach (Book q in Libr2.Books)
                {
                    Console.Write(q.Name + " ");
                }
                Console.WriteLine("\n");
                bool check = false;
                Book finding = Libr.Search("AuthorName", "2", ref check);
                if (check)
                    Console.WriteLine("Результат поиска по AuthorName 2: книга " + finding.Name + "\n");
                finding = Libr.Search("Year", 2, ref check);
                if (check)
                    Console.WriteLine("Результат поиска: книга " + finding.Name + "\n");

                Console.WriteLine("Результат запроса по номеру 2: книга -  " + Libr2.Books[1].Name + "\n");
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }



        }
    }
}