/*
 * qmqtt_client_p.h - qmqtt client private header
 *
 * Copyright (c) 2013  Ery Lee <ery.lee at gmail dot com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of mqttc nor the names of its contributors may be used
 *     to endorse or promote products derived from this software without
 *     specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */
#ifndef QMQTT_CLIENT_P_H
#define QMQTT_CLIENT_P_H

#include <qmqtt_client.h>

#include <QHostAddress>
#include <QString>
#include <QByteArray>
#include <QHash>
#include <QTimer>
#include <QAbstractSocket>

#ifdef QT_WEBSOCKETS_LIB
#include <QWebSocket>
#endif // QT_WEBSOCKETS_LIB

#ifndef QT_NO_SSL
#include <QSslConfiguration>
QT_FORWARD_DECLARE_CLASS(QSslError)
#endif // QT_NO_SSL

namespace QMQTT {

class NetworkInterface;

class ClientPrivate
{
public:
    ClientPrivate(Client* qq_ptr);
    ~ClientPrivate();

    void init(const QHostAddress& host, const quint16 port, NetworkInterface* network = nullptr);
#ifndef QT_NO_SSL
    void init(const QString& hostName, const quint16 port, const QSslConfiguration& config,
              const bool ignoreSelfSigned=false);
#endif // QT_NO_SSL
    void init(const QString& hostName, const quint16 port, const bool ssl, const bool ignoreSelfSigned);
#ifdef QT_WEBSOCKETS_LIB
#ifndef QT_NO_SSL
    void init(const QString& url,
              const QString& origin,
              QWebSocketProtocol::Version version,
              const QSslConfiguration* sslConfig,
              bool ignoreSelfSigned);
#endif // QT_NO_SSL
    void init(const QString& url,
              const QString& origin,
              QWebSocketProtocol::Version version);
#endif // QT_WEBSOCKETS_LIB
    void init(NetworkInterface* network);

    QHostAddress _host;
    QString _hostName;
    quint16 _port;
#ifdef QT_WEBSOCKETS_LIB
    QWebSocketProtocol::Version _webSocketVersion;
#endif // QT_WEBSOCKETS_LIB
#ifndef QT_NO_SSL
    bool _ignoreSelfSigned;
#endif // QT_NO_SSL
    quint16 _gmid;
    MQTTVersion _version;
    QString _clientId;
    QString _username;
    QByteArray _password;
    bool _cleanSession;
    ConnectionState _connectionState;
    QScopedPointer<NetworkInterface> _network;
    QTimer _timer;
    QTimer _pingResponseTimer;
    QString _willTopic;
    quint8 _willQos;
    bool _willRetain;
    QByteArray _willMessage;
    QHash<quint16, QString> _midToTopic;
    QHash<quint16, Message> _midToMessage;

    Client* const q_ptr;

    quint16 nextmid();
    void connectToHost();
    void sendConnect();
    void onTimerPingReq();
    void onPingTimeout();
    quint16 sendUnsubscribe(const QString &topic);
    quint16 sendSubscribe(const QString &topic, const quint8 qos);
    quint16 sendPublish(const Message &message);
    void sendPuback(const quint8 type, const quint16 mid);
    void sendDisconnect();
    void sendFrame(const Frame &frame);
    void disconnectFromHost();
    void stopKeepAlive();
    void onNetworkConnected();
    void onNetworkDisconnected();
    quint16 publish(const Message& message);
    void puback(const quint8 type, const quint16 msgid);
    void subscribe(const QString& topic, const quint8 qos);
    void unsubscribe(const QString& topic);
    void onNetworkReceived(const QMQTT::Frame& frame);
    void handleConnack(const quint8 ack);
    void handlePublish(const Message& message);
    void handlePuback(const quint8 type, const quint16 msgid);
    void handleSuback(const QString& topic, const quint8 qos);
    void handleUnsuback(const QString& topic);
    void handlePingresp();
    bool autoReconnect() const;
    void setAutoReconnect(const bool autoReconnect);
    int autoReconnectInterval() const;
    void setAutoReconnectInterval(const int autoReconnectInterval);
    bool isConnectedToHost() const;
    QMQTT::ConnectionState connectionState() const;
    void setCleanSession(const bool cleanSession);
    bool cleanSession() const;
    void setKeepAlive(const quint16 keepAlive);
    quint16 keepAlive() const;
    void setPassword(const QByteArray& password);
    QByteArray password() const;
    void setUsername(const QString& username);
    QString username() const;
    void setVersion(const MQTTVersion);
    MQTTVersion version() const;
    void setClientId(const QString& clientId);
    QString clientId() const;
    void setPort(const quint16 port);
    quint16 port() const;
    void setHost(const QHostAddress& host);
    QHostAddress host() const;
    void setHostName(const QString& hostName);
    QString hostName() const;
    void setWillTopic(const QString& willTopic);
    void setWillQos(const quint8 willQos);
    void setWillRetain(const bool willRetain);
    void setWillMessage(const QByteArray& willMessage);
    QString willTopic() const;
    quint8 willQos() const;
    bool willRetain() const;
    QByteArray willMessage() const;
    void onNetworkError(QAbstractSocket::SocketError error);
#ifndef QT_NO_SSL
    void ignoreSslErrors();
    void ignoreSslErrors(const QList<QSslError>& errors);
    QSslConfiguration sslConfiguration() const;
    void setSslConfiguration(const QSslConfiguration& config);
    void onSslErrors(const QList<QSslError>& errors);
#endif // QT_NO_SSL

    Q_DECLARE_PUBLIC(Client)
};

} // namespace QMQTT

#endif // QMQTT_CLIENT_P_H