/*
 * Copyright 2010-2014 Ning, Inc.
 * Copyright 2014-2020 Groupon, Inc
 * Copyright 2020-2020 Equinix, Inc
 * Copyright 2014-2020 The Billing Project, LLC
 *
 * The Billing Project licenses this file to you 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.
 */

package org.killbill.automaton;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlID;

import org.killbill.xmlloader.ValidationErrors;

@XmlAccessorType(XmlAccessType.NONE)
public class DefaultOperation extends StateMachineValidatingConfig<DefaultStateMachineConfig> implements Operation, Externalizable {

    @XmlAttribute(required = true)
    @XmlID
    private String name;

    private DefaultStateMachine stateMachine;

    // Required for deserialization
    public DefaultOperation() {
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public StateMachine getStateMachine() {
        return stateMachine;
    }

    @Override
    public OperationResult run(final OperationCallback cb) throws OperationException {
        return cb.doOperationCallback();
    }

    @Override
    public ValidationErrors validate(final DefaultStateMachineConfig root, final ValidationErrors errors) {
        return errors;
    }

    public void setName(final String name) {
        this.name = name;
    }

    public void setStateMachine(final DefaultStateMachine stateMachine) {
        this.stateMachine = stateMachine;
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        final DefaultOperation that = (DefaultOperation) o;

        return name != null ? name.equals(that.name) : that.name == null;
    }

    @Override
    public int hashCode() {
        return name != null ? name.hashCode() : 0;
    }

    @Override
    public void writeExternal(final ObjectOutput out) throws IOException {
        out.writeUTF(name);
    }

    @Override
    public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
        this.name = in.readUTF();
    }
}
