private void delete(String bookId) {
User user = ProfileController.getAuthenticatedUser();
user.getBooks().remove(bookId);
userService.save(user);
ProfileController.authenticateUser(user);
}
// lazy removing
private void updateUsersBooks(List<Book> books) {
List<String> changedList = new ArrayList<String>();
for (Book b : books) changedList.add(b.getId());
User user = ProfileController.getAuthenticatedUser();
user.setBooks(changedList);
userService.save(user);
ProfileController.authenticateUser(user);
}
@RequestMapping(value = "/library/add", method = RequestMethod.GET)
public String addBookToLibrary(@RequestParam(required = true) String id) {
User user = (User) ProfileController.getAuthenticatedUser();
if (user.getBooks() == null || !user.getBooks().contains(id)) user.addBook(id);
userService.save(user);
ProfileController.authenticateUser(user);
return "redirect:/library";
}
public List<Book> getUsersBooks() {
List<Book> books = new ArrayList<Book>();
User user = ProfileController.getAuthenticatedUser();
List<String> usersBooks = user.getBooks();
if (usersBooks == null) return books;
int sizeBefore = usersBooks.size();
for (Iterator<String> bookIter = usersBooks.iterator(); bookIter.hasNext(); ) {
String bookId = bookIter.next();
if (bookService.get(bookId) != null && !bookService.get(bookId).equals(""))
books.add(bookService.get(bookId));
else bookIter.remove();
}
if (sizeBefore != usersBooks.size()) updateUsersBooks(books);
return books;
}