Promotions prototype

@Entity
@Table(name = "promotions")
@Getter
@Setter
@ToString
public class Promotion {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String nameBg;

    @Column(nullable = false)
    private String nameEn;

    @Column(nullable = false)
    @Enumerated(EnumType.STRING)
    private PromotionType promotionType;

    private Double discount;

    @Enumerated(EnumType.STRING)
    private DiscountType discountType;

    private Double subtotal;

    private Long categoryId;

    @OneToMany
    private List<PromotionProductItem> productItems;
}

public enum PromotionType {
    DISCOUNT_OVER_SUBTOTAL,
    DISCOUNT_SPECIFIC_PRODUCTS_ANY,
    DISCOUNT_SPECIFIC_PRODUCTS_ALL,
    DISCOUNT_SPECIFIC_CATEGORY,
}

public enum DiscountType {
    PERCENT, FIXED, FREE_DELIVERY
}