Adding with OneToOne relationship between Basket and Customer

src/main/java/cat/udl/eps/softarch/demo/domain/Basket.java

@@ -0,0 +1,32 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import com.fasterxml.jackson.annotation.JsonIdentityReference;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.util.Collection;
+@Entity
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class Basket extends UriEntity<Long> {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    // Dueño de la relación
+    @NotNull
+    @OneToOne(fetch = FetchType.EAGER)
+    @JoinColumn(name = "customer_id", unique = true)
+    @JsonIdentityReference(alwaysAsId = true)
+    private Customer customer;
+
+    @Override
+    public Long getId() {
+        return id;
+    }
+    //status
+}

src/main/java/cat/udl/eps/softarch/demo/domain/User.java

@@ -27,7 +27,7 @@ public class User extends UriEntity<String> implements UserDetails {
 	public static PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
 
 	@Id
-	private String id;
+	private String id; // este id (lo seleccioa el usuario) pero mejir no dejarle q escoja y q no sea su user.name
 
 	@NotBlank
 	@Email

src/main/java/cat/udl/eps/softarch/demo/repository/BasketRepository.java

@@ -0,0 +1,23 @@
+package cat.udl.eps.softarch.demo.repository;
+
+import cat.udl.eps.softarch.demo.domain.Basket;
+import cat.udl.eps.softarch.demo.domain.Customer;
+import cat.udl.eps.softarch.demo.domain.Product;
+import cat.udl.eps.softarch.demo.domain.User;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+
+import java.util.Optional;
+
+
+@RepositoryRestResource
+public interface BasketRepository extends CrudRepository<Basket, Long>, PagingAndSortingRepository<Basket, Long> {
+
+    Optional<Basket> findByCustomer(Customer customer);
+    Optional<Basket> findByCustomerId(Long customerId);
+
+    boolean existsByCustomer(Customer customer);
+
+    void deleteByCustomer(Customer customer);
+}