wavelength_event_broker.h

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#ifndef WAVELENGTH_EVENT_BROKER_H
#define WAVELENGTH_EVENT_BROKER_H
 
#include <QMap>
#include <QObject>

class WavelengthEventBroker final : public QObject {
    Q_OBJECT
 
public:
    static WavelengthEventBroker *GetInstance() {
        static WavelengthEventBroker instance;
        return &instance;
    }

    void PublishEvent(const QString &event_type, const QVariantMap &data = QVariantMap());

    template<typename Receiver, typename Func>
        requires std::derived_from<Receiver, QObject> &&
                 std::invocable<Func, const QVariantMap &>
    void SubscribeToEvent(const QString &event_type, Receiver *receiver, Func slot);

    void WavelengthCreated(const QString &frequency);

    void WavelengthJoined(const QString &frequency);

    void WavelengthLeft(const QString &frequency);

    void WavelengthClosed(const QString &frequency);

    void MessageReceived(const QString &frequency, const QString &message);

    void MessageSent(const QString &frequency, const QString &message);

    void ConnectionError(const QString &error_message);

    void AuthenticationFailed(const QString &frequency);

    void UserKicked(const QString &frequency, const QString &reason);

    void UiStateChanged(const QString &component, const QVariant &state);

    void SystemMessage(const QString &frequency, const QString &message);

    void ActiveWavelengthChanged(const QString &frequency);
 
signals:
    void eventPublished(const QString &eventType, const QVariantMap &data);
 
private:
    explicit WavelengthEventBroker(QObject *parent = nullptr) : QObject(parent) {
    }

    ~WavelengthEventBroker() override = default;

    WavelengthEventBroker(const WavelengthEventBroker &) = delete;

    WavelengthEventBroker &operator=(const WavelengthEventBroker &) = delete;
};
#endif // WAVELENGTH_EVENT_BROKER_H