@Override
public void updateBookmark(Bookmark bookmark) {
String id = Objects.requireNonNull(bookmark).getId();
if (null == id || id.isEmpty()) {
throw new IllegalArgumentException();
}
// check if there is no different bookmark with this url
Bookmark found = bookmarks.get(bookmark.getUrl());
if (null != found && !id.equals(found.getId())) {
throw new AlreadyExistsException("bookmark with url " + bookmark.getUrl());
}
deleteBookmark(id);
bookmarks.put(bookmark.getUrl(), bookmark);
}
@Override
public Bookmark createBookmark(Bookmark bookmark) {
if (null == bookmark) {
throw new IllegalArgumentException("bookmark is null");
}
if (null != bookmark.getId()) {
throw new IllegalArgumentException("is is not null");
}
if (null == bookmark.getUrl() || bookmark.getUrl().isEmpty()) {
throw new IllegalArgumentException("bookmark url is not set");
}
if (bookmarks.containsKey(bookmark.getUrl())) {
throw new AlreadyExistsException("bookmark with url: " + bookmark.getUrl());
}
bookmark.setId(String.valueOf(nextId.getAndIncrement()));
bookmarks.put(bookmark.getUrl(), bookmark.clone());
return bookmark;
}
/**
* deletes the bookmark with the given id
*
* @param id id of the bookmark to delete
* @throws NotFoundException if no bookmark is found for the given id
*/
@Override
public void deleteBookmark(String id) {
Bookmark bookmark = getBookmarkById(id);
String url = bookmark.getUrl();
bookmarks.remove(url);
}