#ifndef PARKINGSPACEGUIDEREMOTESERVER_H
#define PARKINGSPACEGUIDEREMOTESERVER_H

#include <atomic>
#include <functional>
#include <mutex>
#include <string>

#include <QByteArray>
#include <QObject>
#include <QString>

#include "IVrConfig.h"

class IVrZeroMQPublisher;
class IVrZeroMQServer;
class QJsonObject;
class QUdpSocket;

class ParkingSpaceGuideRemoteServer : public QObject
{
public:
    using ModelHandler = std::function<bool(const QString& modelType)>;
    using StartHandler = std::function<bool(const QString& modelType)>;
    using StopHandler = std::function<int()>;
    using StatusProvider = std::function<std::string()>;
    using RunningProvider = std::function<bool()>;
    using LogHandler = std::function<void(const QString& message)>;

    explicit ParkingSpaceGuideRemoteServer(QObject* parent = nullptr);
    ~ParkingSpaceGuideRemoteServer() override;

    bool Start(const RemoteViewConfig& config,
               ModelHandler modelHandler,
               StartHandler startHandler,
               StopHandler stopHandler,
               StatusProvider statusProvider,
               RunningProvider runningProvider,
               LogHandler logHandler);
    void Stop();

    bool IsRunning() const;
    bool PublishStatus(const std::string& statusJson);
    QString LastError() const;

private:
    QByteArray HandleControlMessage(const QByteArray& request);
    void HandleDiscoveryDatagrams();
    QJsonObject BuildServerInfo(const QString& command) const;
    std::string DeviceId() const;
    void SetError(const QString& message);

private:
    RemoteViewConfig m_config;
    IVrZeroMQServer* m_controlServer = nullptr;
    IVrZeroMQPublisher* m_statusPublisher = nullptr;
    QUdpSocket* m_discoverySocket = nullptr;
    ModelHandler m_modelHandler;
    StartHandler m_startHandler;
    StopHandler m_stopHandler;
    StatusProvider m_statusProvider;
    RunningProvider m_runningProvider;
    LogHandler m_logHandler;
    std::atomic<bool> m_running{false};
    mutable std::mutex m_publishMutex;
    mutable std::mutex m_errorMutex;
    QString m_lastError;
};

#endif // PARKINGSPACEGUIDEREMOTESERVER_H