/*-
 * ============LICENSE_START=======================================================
 * ONAP-REST
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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 java.io.Serializable;
import java.util.HashSet;
import java.util.Set;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Transient;

import com.att.research.xacml.api.Identifier;
import com.att.research.xacml.api.XACML3;
import com.att.research.xacml.std.IdentifierImpl;
import com.fasterxml.jackson.annotation.JsonBackReference;
import com.fasterxml.jackson.annotation.JsonIgnore;


/**
 * The persistent class for the Datatype database table.
 * 
 */
@Entity
@Table(name="Datatype")
@NamedQuery(name="Datatype.findAll", query="SELECT d FROM Datatype d")
public class Datatype implements Serializable {
    private static final long serialVersionUID = 1L;

    public static final char STANDARD = 'S';
    public static final char CUSTOM = 'C';

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="id")
    private int id;

    @Column(name="is_standard", nullable=false)
    private char isStandard;

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

    @Column(name="short_name", nullable=false, length=64)
    private String shortName;

    //bi-directional many-to-one association to Attribute
    @OneToMany(mappedBy="datatypeBean")
    @JsonBackReference
    private Set<Attribute> attributes = new HashSet<>();

    //bi-directional many-to-one association to Attribute
    @OneToMany(mappedBy="datatypeBean")
    @JsonIgnore
    private Set<FunctionDefinition> functions = new HashSet<>();

    //bi-directional many-to-one association to Attribute
    @OneToMany(mappedBy="datatypeBean")
    @JsonIgnore
    private Set<FunctionArgument> arguments = new HashSet<>();

    public Datatype() {
        this.xacmlId = XACML3.ID_DATATYPE_STRING.stringValue();
        this.isStandard = Datatype.STANDARD;
    }


    public Datatype(int id, Datatype dt) {
        this.id = id;
        this.isStandard = dt.isStandard;
        this.xacmlId = dt.xacmlId;
        this.shortName = dt.shortName;
        //
        // Make a copy?
        //
        this.attributes = new HashSet<>();
    }

    public Datatype(Identifier identifier, char standard) {
        if (identifier != null) {
            this.xacmlId = identifier.stringValue();

        }
        this.isStandard = standard;
    }

    public Datatype(Identifier identifier) {
        this(identifier, Datatype.STANDARD);
    }

    public int getId() {
        return this.id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public char getIsStandard() {
        return this.isStandard;
    }

    public void setIsStandard(char isStandard) {
        this.isStandard = isStandard;
    }

    public String getXacmlId() {
        return this.xacmlId;
    }

    public void setXacmlId(String xacmlId) {
        this.xacmlId = xacmlId;
    }

    public String getShortName() {
        return shortName;
    }

    public void setShortName(String shortName) {
        this.shortName = shortName;
    }

    public Set<Attribute> getAttributes() {
        return this.attributes;
    }

    public void setAttributes(Set<Attribute> attributes) {
        this.attributes = attributes;
    }

    public Attribute addAttribute(Attribute attribute) {
        getAttributes().add(attribute);
        attribute.setDatatypeBean(this);

        return attribute;
    }

    public Attribute removeAttribute(Attribute attribute) {
        getAttributes().remove(attribute);
        attribute.setDatatypeBean(null);

        return attribute;
    }

    public Set<FunctionDefinition> getFunctions() {
        return this.functions;
    }

    public void setFunctions(Set<FunctionDefinition> functions) {
        this.functions = functions;
    }

    public FunctionDefinition addFunction(FunctionDefinition function) {
        getFunctions().add(function);
        function.setDatatypeBean(this);

        return function;
    }

    public FunctionDefinition removeAttribute(FunctionDefinition function) {
        getFunctions().remove(function);
        function.setDatatypeBean(null);

        return function;
    }

    public Set<FunctionArgument> getArguments() {
        return this.arguments;
    }

    public void setArguments(Set<FunctionArgument> argument) {
        this.arguments = argument;
    }

    public FunctionArgument addArgument(FunctionArgument argument) {
        getArguments().add(argument);
        argument.setDatatypeBean(this);

        return argument;
    }

    public FunctionArgument removeArgument(FunctionArgument argument) {
        getArguments().remove(argument);
        argument.setDatatypeBean(null);

        return argument;
    }

    @Transient
    public Identifier getIdentifer() {
        return new IdentifierImpl(this.xacmlId);
    }

    @Transient
    public Identifier getIdentiferByShortName() {
        return new IdentifierImpl(this.shortName);
    }

    @Transient
    public boolean isStandard() {
        return this.isStandard == Datatype.STANDARD;
    }

    @Transient
    public boolean isCustom() {
        return this.isStandard == Datatype.CUSTOM;
    }

    @Transient
    @Override
    public String toString() {
        return "Datatype [id=" + id + ", isStandard=" + isStandard
                + ", xacmlId=" + xacmlId + ", shortName=" + shortName
                + ", attributes=" + attributes + ", functions=" + functions
                + ", arguments=" + arguments + "]";
    }

}