/*
 * Copyright © 2020, 2021, 2022, 2023 Peter Doornbosch
 *
 * This file is part of Kwik, an implementation of the QUIC protocol in Java.
 *
 * Kwik is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * Kwik 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 Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.luminis.quic;

public enum HandshakeState {

    Initial,
    HasHandshakeKeys,
    HasAppKeys,
    Completed,
    Confirmed;

    public boolean hasNoHandshakeKeys() {
        return ordinal() < HasHandshakeKeys.ordinal();
    }

    /**
     * @return  true when endpoint has handshake keys, but no 1-RTT keys
     */
    public boolean hasOnlyHandshakeKeys() {
        return this == HasHandshakeKeys;
    }

    public boolean transitionAllowed(HandshakeState proposedState) {
        return this.ordinal() < proposedState.ordinal();
    }

    public boolean isNotConfirmed() {
        return this.ordinal() < Confirmed.ordinal();
    }

    public boolean isConfirmed() {
        return this.ordinal() >= Confirmed.ordinal();
    }
}