g_object.h


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#pragma once

// qt
#include <QDebug>
#include <QJsonDocument>
#include <QJsonObject>
#include <QMetaProperty>
#include <QObject>

#define JSON_CONSTRUCTOR(base_class, derived_class)                            \
public:                                                                        \
    Q_INVOKABLE derived_class(                                                 \
        const QJsonObject& json,                                               \
        QObject* parent = nullptr                                              \
    )                                                                          \
        : base_class(json, parent)                                             \
    {                                                                          \
        constructFromJson(json);                                               \
    }

#define JSON_VALUE_CONSTRUCTOR(base_class, derived_class)                      \
public:                                                                        \
    Q_INVOKABLE derived_class(                                                 \
        const QJsonValue& json,                                                \
        QObject* parent = nullptr                                              \
    )                                                                          \
        : base_class(json.toObject(), parent)                                  \
    {                                                                          \
        constructFromJson(json.toObject());                                    \
    }

#define JSON_ASSING_OPERATOR(base_class, derived_class)                        \
public:                                                                        \
    Q_INVOKABLE derived_class& operator=(const QJsonObject& json)              \
    {                                                                          \
        constructFromJson(json);                                               \
        return *this;                                                          \
    }

#define JSON_VALUE_ASSING_OPERATOR(base_class, derived_class)                  \
public:                                                                        \
    Q_INVOKABLE derived_class& operator=(const QJsonValue& json)               \
    {                                                                          \
        *this = json.toObject();                                               \
        return *this;                                                          \
    }

#define COPY_CONSTRUCTOR(base_class, derived_class)                            \
public:                                                                        \
    Q_INVOKABLE derived_class(                                                 \
        const derived_class& other,                                            \
        QObject* parent = nullptr                                              \
    )                                                                          \
        : base_class(other, parent)                                            \
    {                                                                          \
        *this = other;                                                         \
    }

#define ASSIGN_OPERATOR(base_class, derived_class)                             \
public:                                                                        \
    derived_class& operator=(const derived_class& other)                       \
    {                                                                          \
        base_class::operator=(other);                                          \
        return *this;                                                          \
    }

#define COMPARE_OPERATOR(base_class, derived_class)                            \
public:                                                                        \
    bool operator==(const derived_class& other) const                          \
    {                                                                          \
        if (!base_class::operator==(other))                                    \
            return false;                                                      \
        for (int i = metaObject()->propertyOffset();                           \
             i < metaObject()->propertyCount();                                \
             i++)                                                              \
        {                                                                      \
            auto key = metaObject()->property(i).name();                       \
                                                                               \
            if (property(key) != other.property(key))                          \
            {                                                                  \
                return false;                                                  \
            }                                                                  \
        }                                                                      \
                                                                               \
        return true;                                                           \
    }

#define JSON_VALUE_OPERATOR(base_class)                                        \
public:                                                                        \
    operator const QJsonValue() const                                          \
    {                                                                          \
        return (base_class::operator const QJsonObject());                     \
    }

#define DEFAULT_DESTRUCTOR(classname)                                          \
public:                                                                        \
    Q_INVOKABLE ~classname() Q_DECL_OVERRIDE = default

#define DEFAULT_CONSTRUCTOR(base_class, derived_class)                         \
public:                                                                        \
    Q_INVOKABLE derived_class(QObject* parent = nullptr)                       \
        : base_class(parent)                                                   \
    {                                                                          \
    }

#define G_OBJECT(base_class, derived_class)                                   \
    /*Q_OBJECT*/                                                               \
    JSON_CONSTRUCTOR(base_class, derived_class)                                \
    JSON_VALUE_CONSTRUCTOR(base_class, derived_class)                          \
    COPY_CONSTRUCTOR(base_class, derived_class)

class G_Object : public QObject
{
    Q_OBJECT

    // constructors
public:
    G_Object(QObject* parent = nullptr);

    G_Object(const QJsonObject& json, QObject* parent = nullptr);
    G_Object(const QJsonValue& json, QObject* parent = nullptr);

    G_Object(const G_Object& other, QObject* parent = nullptr);

    // operators
public:
    virtual G_Object& operator=(const G_Object& other);
    virtual G_Object& operator=(const QJsonObject& json);
    virtual G_Object& operator=(const QJsonValue& json);
    virtual operator const QJsonObject() const;
    virtual operator const QJsonValue() const;
    virtual bool operator==(const G_Object& other) const;

protected:
    bool constructFromJson(const QJsonObject& json);
};

QDebug operator<<(QDebug d, const G_Object& o);