/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                         *
 *  Copyright (C) 2018 Michael Zanetti <michael.zanetti@guh.io>            *
 *                                                                         *
 *  This file is part of nymea.                                            *
 *                                                                         *
 *  nymea 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, version 2 of the License.                *
 *                                                                         *
 *  nymea 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 nymea. If not, see <http://www.gnu.org/licenses/>.          *
 *                                                                         *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef MQTTCLIENT_P_H
#define MQTTCLIENT_P_H

#include <QObject>
#include <QTcpSocket>
#include <QTimer>
#include <QLoggingCategory>

#include "mqttpacket.h"
#include "mqttclient.h"
#include "mqttsubscription.h"

Q_DECLARE_LOGGING_CATEGORY(dbgClient)

class MqttClientPrivate: public QObject
{
    Q_OBJECT
public:
    MqttClientPrivate(MqttClient *q);
    MqttClient *q_ptr;

    void connectToHost(const QString &hostName, quint16 port, bool cleanSession, bool useSsl, const QSslConfiguration &sslConfiguration);
    void disconnectFromHost();

public slots:
    void onConnected();
    void onDisconnected();
    void onReadyRead();
    void onSocketStateChanged(QAbstractSocket::SocketState socketState);
    void onSocketError(QAbstractSocket::SocketError error);
    void onSslErrors(const QList<QSslError> &errors);

    quint16 newPacketId();
    void sendPingreq();
    void restartKeepAliveTimer();

    void reconnectTimerTimeout();

public:
    QString serverHostname;
    quint16 serverPort = 0;
    bool useSsl = false;
    QSslConfiguration sslConfiguration;
    bool autoReconnect = true;
    bool sessionActive = false;
    bool cleanSession = true;
    QSslSocket *socket = nullptr;
    QTimer reconnectTimer;
    int reconnectAttempt = 0;
    quint16 maxReconnectTimeout = 36000;

    QString clientId;
    quint16 keepAlive;
    QTimer keepAliveTimer;
    QString willTopic;
    QByteArray willMessage;
    Mqtt::QoS willQoS = Mqtt::QoS0;
    bool willRetain = false;
    QString username;
    QString password;

    QVector<quint16> unackedPacketList;
    QHash<quint16, MqttPacket> unackedPackets;
};

#endif // MQTTCLIENT_P_H