public User createUser(String username, String password) {
if (userRepository.usernameExists(username)) {
throw new ServiceException("Username is already taken");
}
String id = idGenerator.generate();
User user = new User(id, username, password);
userRepository.add(user);
return user;
}
public User getUserById(String userId) {
try {
return userRepository.get(userId);
} catch (RepositoryException e) {
throw new ServiceException("User with id: " + userId + " could not be found", e);
}
}