package com.ankurm.hibernatedemo.persistenceannotations;

import jakarta.persistence.Entity;
import jakarta.persistence.Enumerated;
import jakarta.persistence.EnumType;
import jakarta.persistence.EnumeratedValue;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.Id;

/**
 * {@code @EnumeratedValue} is NEW in Jakarta Persistence 3.2 (confirmed present via javap on
 * jakarta.persistence-api 3.2.0 -- it does not exist in 3.1). It lets an enum control its own
 * persisted representation (a custom code), instead of ORDINAL or STRING.
 *
 * <p>Docs: docs/05-jpa-persistence-annotations.md, Topic 2.
 */
@Entity
public class EnumeratedValueEntity {

    @Id
    @GeneratedValue
    private Long id;

    // @EnumeratedValue's own field type (String) determines the persisted column type, but
    // Hibernate still needs to be told this is a STRING-shaped enum, not the ORDINAL default --
    // otherwise boot fails with "@EnumeratedValue for EnumType.ORDINAL must be placed on a
    // field whose type is byte, short, or int".
    @Enumerated(EnumType.STRING)
    private Priority priority;

    public EnumeratedValueEntity() {
    }

    public EnumeratedValueEntity(Priority priority) {
        this.priority = priority;
    }

    public Long getId() {
        return id;
    }

    public Priority getPriority() {
        return priority;
    }

    /** Persisted representation is the "code" string, NOT the enum's ordinal or name(). */
    public enum Priority {
        LOW("L"), MEDIUM("M"), HIGH("H");

        @EnumeratedValue
        private final String code;

        Priority(String code) {
            this.code = code;
        }

        public String getCode() {
            return code;
        }
    }
}