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#ifndef BASELINEPROTOCOL_H
#define BASELINEPROTOCOL_H

#include <QDataStream>
#include <QTcpSocket>
#include <QImage>
#include <QVector>
#include <QMap>

#define QLS QLatin1String
#define QLC QLatin1Char

#define FileFormat "png"

const QString PI_HostName(QLS("HostName"));
const QString PI_HostAddress(QLS("HostAddress"));
const QString PI_OSName(QLS("OSName"));
const QString PI_OSVersion(QLS("OSVersion"));
const QString PI_QtVersion(QLS("QtVersion"));
const QString PI_BuildKey(QLS("BuildKey"));
const QString PI_GitCommit(QLS("GitCommit"));
const QString PI_QMakeSpec(QLS("QMakeSpec"));
const QString PI_PulseGitBranch(QLS("PulseGitBranch"));
const QString PI_PulseTestrBranch(QLS("PulseTestrBranch"));

class PlatformInfo : public QMap<QString, QString>
{
public:
    PlatformInfo(bool useLocal = false);
};

struct ImageItem
{
public:
    ImageItem()
        : status(Ok), renderFormat(QImage::Format_Invalid), engine(Raster), scriptChecksum(0)
    {}
    ImageItem(const ImageItem &other)
    { *this = other; }
    ~ImageItem()
    {}
    ImageItem &operator=(const ImageItem &other);
    static quint64 computeChecksum(const QImage& image);
    QString engineAsString() const;
    QString formatAsString() const;

    void writeImageToStream(QDataStream &stream) const;
    void readImageFromStream(QDataStream &stream);

    enum ItemStatus {
        Ok = 0,
        BaselineNotFound = 1,
        IgnoreItem = 2
    };

    enum GraphicsEngine {
        Raster = 0,
        OpenGL = 1
    };

    QString scriptName;
    ItemStatus status;
    QImage::Format renderFormat;
    GraphicsEngine engine;
    QImage image;
    QList<quint64> imageChecksums;
    // tbd: add diffscore
    quint16 scriptChecksum;
};
QDataStream & operator<< (QDataStream &stream, const ImageItem &ii);
QDataStream & operator>> (QDataStream &stream, ImageItem& ii);

Q_DECLARE_METATYPE(ImageItem);

typedef QVector<ImageItem> ImageItemList;

class BaselineProtocol
{
public:
    BaselineProtocol() {}
    ~BaselineProtocol();

    // ****************************************************
    // Important constants here
    // ****************************************************
    enum Constant {
        ProtocolVersion = 3,
        ServerPort = 54129,
        Timeout = 5000
    };

    enum Command {
        UnknownError = 0,
        // Queries
        AcceptPlatformInfo = 1,
        RequestBaselineChecksums = 2,
        AcceptNewBaseline = 4,
        AcceptMismatch = 5,
        // Responses
        Ack = 128,
        Abort = 129,
        DoDryRun = 130
    };

    // For client:
    bool connect(bool *dryrun = 0);
    bool requestBaselineChecksums(ImageItemList *itemList);
    bool submitNewBaseline(const ImageItem &item, QByteArray *serverMsg);
    bool submitMismatch(const ImageItem &item, QByteArray *serverMsg);

    // For server:
    bool acceptConnection(PlatformInfo *pi);

    QString errorMessage();

private:
    bool sendItem(Command cmd, const ImageItem &item);

    bool sendBlock(Command cmd, const QByteArray &block);
    bool receiveBlock(Command *cmd, QByteArray *block);
    void sysSleep(int ms);

    QString errMsg;
    QTcpSocket socket;

    friend class BaselineThread;
    friend class BaselineHandler;
};


#endif // BASELINEPROTOCOL_H