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*
* Copyright 2013 - 2020, nymea GmbH
* Contact: contact@nymea.io
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* copyright law, and remains the property of nymea GmbH. All rights, including
* reproduction, publication, editing and translation, are reserved. The use of
* this project is subject to the terms of a license agreement to be concluded
* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
* under https://nymea.io/license
*
* GNU Lesser General Public License Usage
* Alternatively, this project may be redistributed and/or modified under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; version 3. This project 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.
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#ifndef LIFXLAN_H
#define LIFXLAN_H

#include <QObject>
#include <QTimer>
#include <QHostAddress>
#include <QUdpSocket>

#include "network/networkaccessmanager.h"

#include <QColor>

class LifxLan : public QObject
{
    Q_OBJECT
public:

#pragma pack(push, 1)
    typedef struct {
        /* frame */
        uint16_t size;
        uint16_t protocol:12;
        uint8_t  addressable:1;
        uint8_t  tagged:1;
        uint8_t  origin:2;
        uint32_t source;
        /* frame address */
        uint8_t  target[8];
        uint8_t  reserved[6];
        uint8_t  res_required:1;
        uint8_t  ack_required:1;
        uint8_t  :6;
        uint8_t  sequence;
        /* protocol header */
        uint64_t :64;
        uint16_t type;
        uint16_t :16;
        /* variable length payload follows */
    } ProtocolHeader_t;
#pragma pack(pop)

    struct Frame {
        //quint16 Size;       //Size of entire message in bytes including this field
        //quint16 Protocol;   //Protocol number: must be 1024 (decimal)
        //bool Addressable;   //Message includes a target address: must be one (1)
        bool Tagged;        //Determines usage of the Frame Address target field
        //quint8 Origin;      //Message origin indicator: must be zero (0)
        quint32 Source;     //Source identifier: unique value set by the client, used by responses
    };

    struct FrameAddress {
        quint64 Target;         //6 byte device address (MAC address) or zero (0) means all devices. The last two bytes should be 0 bytes.
        bool ResponseRequired;  //Response message required
        bool AckRequired;       //Acknowledgement message required
        quint8 Sequence;        //Wrap around message sequence number
    };

    struct ProtocolHeader {
        quint16 Type; //Message type determines the payload being used
    };

    struct Message {
        Frame frame;
        FrameAddress frameAddress;
        ProtocolHeader protocolHeader;
        QByteArray payload;
    };

    enum LightMessages {
        Get         = 101,
        SetColor    = 102,
        SetWaveform = 103,
        SetWaveformOptional = 119,
        State       = 107,
        GetPower    = 116,
        SetPower    = 117,
        StatePower  = 118,
        GetInfrared = 120,
        StateInfrared = 121,
        SetInfrared = 122
    };

    struct LifxProduct {
      int pid;
      QString name;
      bool color;
      bool infrared;
      bool matrix;
      bool multizone;
      uint minColorTemperature;
      uint maxColorTemperature;
      bool chain;
    };

    explicit LifxLan(const QHostAddress &address, quint16 port = 56700, QObject *parent = nullptr);
    ~LifxLan();
    bool enable();
    void setHostAddress(const QHostAddress &address);
    void setPort(quint16 port);

    int setColorTemperature(uint kelvin, uint msFadeTime=500);
    int setColor(QColor color, uint msFadeTime = 500);
    int setBrightness(uint percentage, uint msFadeTime = 500);
    int setPower(bool power, uint msFadeTime = 500);

private:
    quint32 m_clientId = 0;
    QTimer *m_reconnectTimer = nullptr;
    QUdpSocket *m_socket = nullptr;
    QHostAddress m_host;
    quint16 m_port;
    quint8 m_sequenceNumber = 0;

    void sendMessage(const Message &message);

private slots:
    void onStateChanged(QAbstractSocket::SocketState state);
    void onReadyRead();

signals:
    void connectionChanged(bool connected);
    void requestExecuted(int requestId, bool success);
};
#endif // LIFXLAN_H