/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.bolt.negotiation.message;

import java.util.List;
import java.util.Objects;
import org.neo4j.bolt.negotiation.ProtocolVersion;

public record ProtocolNegotiationRequest(int magicNumber, List<ProtocolVersion> proposedVersions) {

    public static final int ENCODED_SIZE = 4 + (ProtocolVersion.ENCODED_SIZE * 4);

    public ProtocolNegotiationRequest(int magicNumber, List<ProtocolVersion> proposedVersions) {
        this.magicNumber = magicNumber;
        this.proposedVersions = List.copyOf(proposedVersions);
    }

    public int getMagicNumber() {
        return this.magicNumber;
    }

    public List<ProtocolVersion> getProposedVersions() {
        return this.proposedVersions;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        var that = (ProtocolNegotiationRequest) o;
        return magicNumber == that.magicNumber && Objects.equals(proposedVersions, that.proposedVersions);
    }

    @Override
    public int hashCode() {
        return Objects.hash(magicNumber, proposedVersions);
    }

    @Override
    public String toString() {
        return "ProtocolNegotiationRequest{" + "magicNumber=0x"
                + Integer.toHexString(magicNumber) + ", proposedVersions="
                + proposedVersions + '}';
    }
}
