/*-
 * ============LICENSE_START=======================================================
 * ONAP-REST
 * ================================================================================
 * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
 * Modifications Copyright (C) 2019 Nordix Foundation.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.onap.policy.rest.jpa;

/*
 */
import com.fasterxml.jackson.annotation.JsonBackReference;
import com.fasterxml.jackson.annotation.JsonManagedReference;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToOne;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;

import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;

/**
 * The Entity class to persist a policy object and its configuration data.
 */
// @formatter:off
@Entity
// Add a non-unique index and a constraint that says the combo of policyName and scopeId must be unique
@Table(name = "PolicyEntity")
@NamedQueries(
    {
        @NamedQuery(
            name = "PolicyEntity.findAll",
            query = "SELECT e FROM PolicyEntity e "
        ),
        @NamedQuery(
            name = "PolicyEntity.findAllByDeletedFlag",
            query = "SELECT e FROM PolicyEntity e WHERE e.deleted = :deleted"
        ),
        @NamedQuery(
            name = "PolicyEntity.FindById",
            query = "SELECT e FROM PolicyEntity e WHERE e.policyId = :id"
        ),
        @NamedQuery(
            name = "PolicyEntity.deleteAll",
            query = "DELETE FROM PolicyEntity WHERE 1=1"
        ),
        @NamedQuery(
            name = "PolicyEntity.findByNameAndScope",
            query = "SELECT e FROM PolicyEntity e WHERE e.policyName = :name AND e.scope = :scope"
        )
    }
)
@Getter
@Setter
@EqualsAndHashCode
// @formatter:on
public class PolicyEntity implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "policyId")
    @JsonBackReference
    private long policyId;

    @Column(name = "policyName", nullable = false, unique = false, length = 255)
    private String policyName;

    // The scope is the directory structure in dot notation. For example: org.onap.myproject
    @Column(name = "scope", nullable = false, unique = false, length = 255)
    private String scope;

    @Version
    @Column(name = "version")
    private int version;

    // not going to be used
    @Column(name = "policyVersion")
    private int policyVersion = 0;

    @Lob
    @Column(name = "policyData", nullable = false, columnDefinition = "TEXT")
    private String policyData = "NoData";

    @OneToOne(optional = true, orphanRemoval = true)
    @JoinColumn(name = "configurationDataId")
    @JsonManagedReference
    private ConfigurationDataEntity configurationDataEntity;

    @OneToOne(optional = true, orphanRemoval = true)
    @JoinColumn(name = "actionBodyId")
    @JsonManagedReference
    private ActionBodyEntity actionBodyEntity;

    @Column(name = "created_by", nullable = false, length = 255)
    private String createdBy = "guest";

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "created_date", updatable = false)
    private Date createdDate;

    @Column(name = "description", nullable = false, length = 2048)
    private String description = "NoDescription";

    @Column(name = "modified_by", nullable = false, length = 255)
    private String modifiedBy = "guest";

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "modified_date", nullable = false)
    private Date modifiedDate;

    @Column(name = "deleted", nullable = false)
    private boolean deleted = false;

    @Column(name = "delete_reason_code", nullable = true, length = 100)
    private String deleteReasonCode;

    @Column(name = "deleted_by", nullable = true, length = 45)
    private String deletedBy;

    public PolicyEntity() {
        super();
    }

    /**
     * Set default values.
     */
    @PrePersist
    public void prePersist() {
        Date date = new Date();
        this.createdDate = date;
        this.modifiedDate = date;
    }

    @PreUpdate
    public void preUpdate() {
        this.modifiedDate = new Date();
    }

    /**
     * Returns configurationDataEntity.
     *
     * @return the configurationDataEntity
     */
    public ConfigurationDataEntity getConfigurationData() {
        return configurationDataEntity;
    }

    /**
     * Set configurationDataEntity.
     *
     * @param configurationDataEntity the configurationDataEntity to set
     */
    public void setConfigurationData(ConfigurationDataEntity configurationDataEntity) {
        this.configurationDataEntity = configurationDataEntity;
    }
}