// Выдача книги
public void GiveBook(Subscriber sub, Book book)
{
int countsub = 0;
foreach (Subscriber subscriber in subscribers)
{
if (subscriber.Name == sub.Name && subscriber.Phone == sub.Phone)
{
countsub++;
}
}
if (countsub == 0)
{
subscribers.Add(sub);
AddSubHandler?.Invoke(this, sub);
}
if (sub.OverdueBooks().Count == 0 && sub.ListBooks().Count < 5 && (sub.HasRarityBook == false || (sub.HasRarityBook == true && book.IsRarity == false)))
{
bool hasBook = false;
for (int i = 0; i < books.Count; i++)
{
if (books[i] == book)
{
books.Remove(book);
hasBook = true;
break;
}
}
if (!hasBook)
{
Console.WriteLine("Пользователь {0}, книги {1} в библиотеке нет", sub.Name, book.Author + " " + book.Name);
return;
}
book.Sub = sub;
book.Begin = DateTime.Now;
sub.Books.Add(book);
ChangeStateHandler?.Invoke(this, $"Change State Book: {book.Author} - {book.Name} was given to {sub.Name} - {sub.Phone}");
if (book.IsRarity)
{
sub.HasRarityBook = true;
}
}
else
{
Console.WriteLine("Пользователь {0}, сдайте {1} книги", sub.Name, sub.OverdueBooks().Count > 0 ? "просроченные" : "лишние");
}
}
public void ReturnBook(Subscriber sub, Book book)
{
sub.ReturnBook(this, book);
ChangeStateHandler?.Invoke(this, $"Change State Book: {book.Author} - {book.Name} was return to Library");
}