/*******************************************************
**returnBook Description:
** if the specified Book is not in the Library, return
** "book not found"
** if the Book is not checked out, return "book already
** in library"
** update the Patron's checkedOutBooks; update the
** Book's location depending on whether another
** Patron has requested it; update the Book's
** checkedOutBy; return "return successful"
*******************************************************/
string Library::returnBook(std::string bID)
{
//find if Book exists//
if (getBook(bID) == NULL)
return "Book was not found.";
//find if Book //
if (getBook(bID)->getLocation() != CHECKED_OUT)
return "Book is already in Library.";
else
{
//initiate local pointers if Book exists and is not CHECKED_OUT//
Book* bPtr = getBook(bID);
Patron* pPtr = bPtr->getCheckedOutBy();
//remove Book from Patron's checkOutBooks//
pPtr->removeBook(bPtr);
//set Book's location based on request status//
if (bPtr->getRequestedBy() == NULL)
bPtr->setLocation(ON_SHELF);
else
bPtr->setLocation(ON_HOLD_SHELF);
//set Book's checkedOutBy//
bPtr->setCheckedOutBy(NULL);
//return was successful//
return "Return successful.";
}
}
//Return a book, if it is not already on the shelf.
void Library::returnBook(std::string bookID)
{
Book* book = GetBook(bookID);
if(book == NULL)
{
std::cout << std::endl << "No such book in holdings." << std::endl << std::endl;
return;
}
if(book->getLocation() == ON_SHELF)
{
std::cout << "This book is already on the shelf." << std::endl;
}
else if(book->getLocation() == ON_HOLD)
{
std::cout << "This book is on the hold shelf and cannot be returned." << std::endl;
}
else
{
Patron* patron = book->getCheckedOutBy();
if(book->getRequestedBy() == NULL)
{
book->setLocation(ON_SHELF);
book->setCheckedOutBy(NULL);
book->setDateCheckedOut(-1);
patron->removeBook(book);
}
else
{
book->setLocation(ON_HOLD);
book->setCheckedOutBy(NULL);
book->setDateCheckedOut(-1);
patron->removeBook(book);
}
}
}
