/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
 * or http://forgerock.org/license/CDDLv1.0.html.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at legal-notices/CDDLv1_0.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2010 Sun Microsystems, Inc.
 *      Portions copyright 2012-2013 ForgeRock AS.
 */

package com.forgerock.opendj.ldap.extensions;

import java.io.IOException;

import org.forgerock.opendj.io.ASN1;
import org.forgerock.opendj.io.ASN1Writer;
import org.forgerock.opendj.ldap.ByteString;
import org.forgerock.opendj.ldap.ByteStringBuilder;
import org.forgerock.opendj.ldap.ResultCode;
import org.forgerock.opendj.ldap.responses.AbstractExtendedResult;

import org.forgerock.util.Reject;

/**
 * Get connection ID extended result.
 *
 * @see GetConnectionIDExtendedRequest
 */
public final class GetConnectionIDExtendedResult extends
        AbstractExtendedResult<GetConnectionIDExtendedResult> {
    /**
     * Creates a new get connection ID extended result with a default connection
     * ID of -1.
     *
     * @param resultCode
     *            The result code.
     * @return The new get connection ID extended result.
     * @throws NullPointerException
     *             If {@code resultCode} was {@code null}.
     */
    public static GetConnectionIDExtendedResult newResult(final ResultCode resultCode) {
        Reject.ifNull(resultCode);
        return new GetConnectionIDExtendedResult(resultCode);
    }

    private int connectionID = -1;

    private GetConnectionIDExtendedResult(final ResultCode resultCode) {
        super(resultCode);
    }

    /**
     * Returns the client connection ID.
     *
     * @return The client connection ID.
     */
    public int getConnectionID() {
        return connectionID;
    }

    /** {@inheritDoc} */
    @Override
    public String getOID() {
        return GetConnectionIDExtendedRequest.OID;
    }

    /** {@inheritDoc} */
    @Override
    public ByteString getValue() {
        final ByteStringBuilder buffer = new ByteStringBuilder(6);
        final ASN1Writer writer = ASN1.getWriter(buffer);

        try {
            writer.writeInteger(connectionID);
        } catch (final IOException ioe) {
            // This should never happen unless there is a bug somewhere.
            throw new RuntimeException(ioe);
        }

        return buffer.toByteString();
    }

    /** {@inheritDoc} */
    @Override
    public boolean hasValue() {
        return true;
    }

    /**
     * Sets the client connection ID.
     *
     * @param connectionID
     *            The client connection ID.
     * @return This get connection ID result.
     */
    public GetConnectionIDExtendedResult setConnectionID(final int connectionID) {
        this.connectionID = connectionID;
        return this;
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        final StringBuilder builder = new StringBuilder();
        builder.append("GetConnectionIDExtendedResponse(resultCode=");
        builder.append(getResultCode());
        builder.append(", matchedDN=");
        builder.append(getMatchedDN());
        builder.append(", diagnosticMessage=");
        builder.append(getDiagnosticMessage());
        builder.append(", referrals=");
        builder.append(getReferralURIs());
        builder.append(", responseName=");
        builder.append(getOID());
        builder.append(", connectionID=");
        builder.append(connectionID);
        builder.append(", controls=");
        builder.append(getControls());
        builder.append(")");
        return builder.toString();
    }
}