public bool LendBook(Account user, Book book)
{
var bookItem = new BookItem();
char bookLetter = book.Title.ToUpper()[0];
foreach (var rack in this.Racks)
{
if (rack.Letters.Contains(bookLetter))
{
bookItem = rack.BookItems.Find(bI => bI.Book == book);
if (bookItem == null)
{
return(false);
}
var bookLending = new BookLending
{
BookItem = bookItem,
User = user,
Date = DateTime.Now
};
this.System.BookLendings.Add(bookLending);
rack.BookItems.Remove(bookItem);
break;
}
}
return(true);
}
public void AddBook(Book book)
{
char bookLetter = book.Title.ToUpper()[0];
foreach (var rack in this.Racks)
{
if (rack.Letters.Contains(bookLetter))
{
var bookItem = new BookItem(); // pravin si kopie na knigata koqto se dobavq
bookItem.Book = book;
bookItem.Rack = rack;
rack.BookItems.Add(bookItem); // tuk sudurjame fizicheskite kopiq na edna kniga
break;
}
}
if (this.Books.Add(book))
{
this.Catalog.AddBook(book);
}
}
public void ReserveBook(Account user, Book book)
{
var bookItem = new BookItem();
char bookLetter = book.Title.ToUpper()[0];
foreach (var rack in this.Racks)
{
if (rack.Letters.Contains(bookLetter))
{
bookItem = rack.BookItems.Find(bR => bR.Book == book);
var bookReserv = new BookReservation
{
BookItem = bookItem,
User = user,
Date = DateTime.Now
};
this.System.BookReservations.Add(bookReserv);
break;
}
}
}