/*
* Copyright @ 2013 CurisTEC, S.A.S. All Rights Reserved.
*/
package net.curisit.securis.db;

import java.io.Serializable;
import java.util.Objects;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.JoinColumn;
import jakarta.persistence.ManyToOne;
import jakarta.persistence.NamedQueries;
import jakarta.persistence.NamedQuery;
import jakarta.persistence.Table;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.annotation.JsonProperty;

import net.curisit.securis.db.common.Metadata;

/**
* PackMetadata
* <p>
* Single metadata entry (key/value/flags) attached to a {@link Pack}.
* Uses composite PK: (pack_id, key).
*
* Mapping details:
* - Table: pack_metadata
* - PK: pack_id + key (two @Id fields)
* - 'pack' is @JsonIgnore to reduce payload size in list views
* - NamedQuery: list-pack-metadata by pack id
*
* Flags:
* - readonly: UI hint to prevent edits
* - mandatory: requires value on pack creation/updates
* 
* @author JRA
* Last reviewed by JRA on Oct 5, 2025.
*/
@JsonAutoDetect
@JsonInclude(Include.NON_NULL)
@Entity
@Table(name = "pack_metadata")
@JsonIgnoreProperties(ignoreUnknown = true)
@NamedQueries({
    @NamedQuery(name = "list-pack-metadata",
                query = "SELECT a FROM PackMetadata a where a.pack.id = :packId")
})
public class PackMetadata implements Serializable, Metadata {

    private static final long serialVersionUID = 1L;

    /** PK part: owning pack (ignored in JSON). */
    @Id
    @JsonIgnore
    @ManyToOne
    @JoinColumn(name = "pack_id")
    private Pack pack;

    /** PK part: metadata key (quoted column name). */
    @Id
    @Column(name = "\"key\"")
    private String key;

    /** Metadata value. */
    private String value;

    /** Whether this field can be edited by clients. */
    private boolean readonly;

    /** Whether this field is required. */
    private boolean mandatory;

    // -------- JSON helpers to expose pack id --------

    /** 
     * getPackId<p>
     * Expose pack id as JSON scalar. 
     * 
     * @return packId
     */
    @JsonProperty("pack_id")
    public Integer getPackId() {
        return pack == null ? null : pack.getId();
    }

    /** 
     * setLicenseTypeId<p>
     * Setter by id (creates shallow Pack).
     * 
     * @param packId
     */
    @JsonProperty("pack_id")
    public void setLicenseTypeId(Integer idPack) {
        if (idPack == null) {
            pack = null;
        } else {
            pack = new Pack();
            pack.setId(idPack);
        }
    }

    // -------- Getters & setters --------

    /** 
     * getPack<p>
     * Return owning pack (entity). 
     * 
     * @return pack
     */
    public Pack getPack() { return pack; }

    /** 
     * setPack<p>
     * Set owning pack (entity). 
     * 
     * @param pack
     */
    public void setPack(Pack pack) { this.pack = pack; }

    /** 
     * getValue<p>
     * Return metadata value. 
     * 
     * @return metadataValue
     */
    public String getValue() { return value; }

    /** 
     * setValue<p>
     * Set the metadata value. 
     * 
     * @param metadataValue
     */
    public void setValue(String value) { this.value = value; }

    /** 
     * getKey<p>
     * Return metadata key (PK part). 
     * 
     * @return key
     */
    public String getKey() { return key; }

    /** 
     * setKey<p>
     * Set metadata key (PK part). 
     * 
     * @param key
     */
    public void setKey(String key) { this.key = key; }

    /** 
     * isReadonly<p>
     * Return read-only flag. 
     * 
     * @return isReadonly
     */
    public boolean isReadonly() { return readonly; }

    /** 
     * setReadonly<p>
     * Set read-only flag.
     * 
     * @param readonly
     */
    public void setReadonly(boolean readonly) { this.readonly = readonly; }

    /** 
     * isMandatory<p>
     * Return mandatory flag. 
     * 
     * @return isMandatory
     */
    public boolean isMandatory() { return mandatory; }

    /** 
     * setMandatory<p>
     * Set mandatory flag.
     * 
     * @param mandatory
     */
    public void setMandatory(boolean mandatory) { this.mandatory = mandatory; }

    // -------- Object methods --------

    /**
     * toString<p>
     * Get the string describing the current object
     * 
     * @return object string
     */
    @Override
    public String toString() { return String.format("PackMD (%s: %s)", key, value); }

    /**
     * equals<p>
     * Compare the current object with the given object
     * 
     * @param object
     * @return isEquals
     */
    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof PackMetadata)) return false;
        PackMetadata other = (PackMetadata) obj;
        return Objects.equals(key, other.key) && Objects.equals(pack, other.pack);
    }

    /**
     * hashCode<p>
     * Get the object hashCode
     * 
     * @return hashCode
     */
    @Override
    public int hashCode() { return Objects.hash(key, pack); }
}