@Service
public class AdminRepositoryImpl {

    @Autowired
    public AdminRepository adminRepository;

    public void add(String OIB, String name, String username, String passwordHash){
        Admin admin = new Admin(OIB, name, username, passwordHash);
        adminRepository.saveAndFlush(admin);
    }

    public void delete(Long id){
        Admin admin = adminRepository.findOne(id);
        Objects.requireNonNull(admin);

        adminRepository.delete(admin);
    }

    public void update(Long id, String OIB, String name, String username, String passwordHash){
        Admin admin = adminRepository.findOne(id);
        Objects.requireNonNull(admin);

        // pretpostavimo da su svi zadani TODO dodatne provjere ako je neki/više njih null

        admin.setOib(OIB);
        admin.setName(name);
        admin.setUsername(username);
        admin.setPasswordHash(passwordHash);

        adminRepository.saveAndFlush(admin);
    }
}