@Repository
    @Transactional
    public class CustomerDaoImpl implements CustomerDao {

        @Autowired
        private SessionFactory sessionFactory;

        public void addCustomer(Customer customer) {
            Session session = sessionFactory.getCurrentSession();

            customer.getBillingAddress().setCustomer(customer);
            customer.getShippingAddress().setCustomer(customer);

            session.saveOrUpdate(customer);
            session.saveOrUpdate(customer.getBillingAddress());
            session.saveOrUpdate(customer.getShippingAddress());

            Users newUser = new Users();
            newUser.setUsername(customer.getUsername());
            newUser.setPassword(customer.getPassword());
            newUser.setEnabled(true);
            newUser.setCustomerId(customer.getCustomerId());

            Authorities newAuthority = new Authorities();
            newAuthority.setAuthority("ROLE_USER");
            session.saveOrUpdate(newUser);
            session.saveOrUpdate(newAuthority);
            newAuthority.setUsername(customer.getUsername());

            Cart newCart = new Cart();
            newCart.setCustomer(customer);
            customer.setCart(newCart);

            session.saveOrUpdate(customer);
            session.saveOrUpdate(newCart);

            session.flush();

        }

        public Customer getCustomerById(int id) {
            Session session = sessionFactory.getCurrentSession();
            Customer customer = (Customer) session.get(Customer.class, id);
            session.flush();

            return customer;
        }

        public List<Customer> getAllCustomers() {
            Session session = sessionFactory.getCurrentSession();
            Query query = session.createQuery("from Customer ");
            List<Customer> customerList = query.list();

            return customerList;

        }

        public Customer getCustomerByUsername(String username) {
            Session session = sessionFactory.getCurrentSession();
            Query query = session.createQuery("from Customer where username =          ?");
                query.setString(0, username);

            return (Customer) query.uniqueResult();
        }

        public void deleteCustomer(Customer customer) {
            Session session = sessionFactory.getCurrentSession();
            session.delete(customer);
            session.flush();

        }

    }

    @Entity
    public class Users {

        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private int usersId;
        private String username;
        private String password;
        private Boolean enabled;


        private int customerId;


        public int getUsersId() {
            return usersId;
        }

        public void setUsersId(int usersId) {
            this.usersId = usersId;
        }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Boolean getEnabled() {
        return enabled;
    }

    public void setEnabled(Boolean enabled) {
        this.enabled = enabled;
    }

    public int getCustomerId() {
        return customerId;
    }

    public void setCustomerId(int customerId) {
        this.customerId = customerId;
    }
}

@Entity
public class Authorities {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int authoritiesId;
    private String username;
    private String authority;

    public int getAuthoritiesId() {
        return authoritiesId;
    }

    public void setAuthoritiesId(int authoritiesId) {
        this.authoritiesId = authoritiesId;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getAuthority() {
        return authority;
    }

    public void setAuthority(String authority) {
        this.authority = authority;
    }
}

@Entity
public class Customer implements Serializable {

    private static final long serialVersionUID = 5140900014886997914L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int customerId;

    @NotEmpty(message = "Nazwa użytkownika nie może pozostać pusta!")

    private String customerName;

    @NotEmpty(message = "Uzupełnij adres email!")
    private String customerEmail;
    private String customerPhone;

    @NotEmpty(message = "Nazwa użytkownika nie może pozostać pusta!")
    private String username;

    @NotEmpty(message = "Uzupełnij hasło!")
    @Size(min = 6, max = 16, message = "Hasło musi zawierać od 6 do 16 znaków!")
    private String password;

    private boolean enabled;

    @OneToOne(mappedBy = "customer", cascade = CascadeType.REMOVE)
    @JoinColumn(name = "billingAddressId")
    private BillingAddress billingAddress;

    @OneToOne(mappedBy = "customer", cascade = CascadeType.REMOVE)
    @JoinColumn(name = "shippingAddressId")
    private ShippingAddress shippingAddress;

    @OneToOne( cascade = CascadeType.REMOVE, mappedBy = "customer")
    @JoinColumn(name = "cartId")
    @JsonIgnore
    private Cart cart;



    public int getCustomerId() {
        return customerId;
    }

    public void setCustomerId(int customerId) {
        this.customerId = customerId;
    }

    public String getCustomerName() {
        return customerName;
    }

    public void setCustomerName(String customerName) {
        this.customerName = customerName;
    }

    public String getCustomerEmail() {
        return customerEmail;
    }

    public void setCustomerEmail(String customerEmail) {
        this.customerEmail = customerEmail;
    }

    public String getCustomerPhone() {
        return customerPhone;
    }

    public void setCustomerPhone(String customerPhone) {
        this.customerPhone = customerPhone;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public boolean isEnabled() {
        return enabled;
    }

    public void setEnabled(boolean enabled) {
        this.enabled = enabled;
    }

    public BillingAddress getBillingAddress() {
        return billingAddress;
    }

    public void setBillingAddress(BillingAddress billingAddress) {
        this.billingAddress = billingAddress;
    }

    public ShippingAddress getShippingAddress() {
        return shippingAddress;
    }

    public void setShippingAddress(ShippingAddress shippingAddress) {
        this.shippingAddress = shippingAddress;
    }

    public Cart getCart() {
        return cart;
    }

    public void setCart(Cart cart) {
        this.cart = cart;
    }

}
@Controller
public class RegisterController {

    @RequestMapping("/register")
    public String registerCustomer(Model model) {
        Customer customer = new Customer();
        BillingAddress billingAddress = new BillingAddress();
        ShippingAddress shippingAddress = new ShippingAddress();
        customer.setBillingAddress(billingAddress);
        customer.setShippingAddress(shippingAddress);

        model.addAttribute("customer", customer);
        return "registerCustomer";
    }

    @Autowired
    private CustomerService customerService;


    @RequestMapping(value = "/register", method = RequestMethod.POST)
    public String registerCustomerPost(@Valid @ModelAttribute("customer") Customer customer, BindingResult result,
            Model model) {

        if (result.hasErrors()) {
            return "registerCustomer";
        }

        List<Customer> customerList = customerService.getAllCustomers();

        for (int i = 0; i < customerList.size(); i++) {
            if (customer.getCustomerEmail().equals(customerList.get(i).getCustomerEmail())) {
                model.addAttribute("emailMsg", "Email już istnieje w bazie danych!");

                return "registerCustomer";
            }

            if (customer.getUsername().equals(customerList.get(i).getUsername())) {
                model.addAttribute("usernameMsg", "Użytkownik o dane nazwie już istnieje w bazie!");

                return "registerCustomer";
            }
        }


        customer.setEnabled(true);
        customerService.addCustomer(customer);
        return "registerCustomerSuccess";
    }
}