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#ifndef REMOTELINUXUSEDPORTSGATHERER_H
#define REMOTELINUXUSEDPORTSGATHERER_H

#include "remotelinux_export.h"

#include <QtCore/QList>
#include <QtCore/QObject>
#include <QtCore/QSharedPointer>

QT_FORWARD_DECLARE_CLASS(QString)

namespace Utils {
class SshConnection;
} // namespace Utils

namespace RemoteLinux {
class LinuxDeviceConfiguration;
class PortList;

namespace Internal {
class RemoteLinuxUsedPortsGathererPrivate;
} // namespace Internal

class REMOTELINUX_EXPORT RemoteLinuxUsedPortsGatherer : public QObject
{
    Q_OBJECT
    Q_DISABLE_COPY(RemoteLinuxUsedPortsGatherer)
public:
    explicit RemoteLinuxUsedPortsGatherer(QObject *parent = 0);
    ~RemoteLinuxUsedPortsGatherer();
    void start(const QSharedPointer<Utils::SshConnection> &connection,
        const QSharedPointer<const LinuxDeviceConfiguration> &devConf);
    void stop();
    int getNextFreePort(PortList *freePorts) const; // returns -1 if no more are left
    QList<int> usedPorts() const;

signals:
    void error(const QString &errMsg);
    void portListReady();

private slots:
    void handleConnectionError();
    void handleProcessClosed(int exitStatus);
    void handleRemoteStdOut(const QByteArray &output);
    void handleRemoteStdErr(const QByteArray &output);

private:
    void setupUsedPorts();

    Internal::RemoteLinuxUsedPortsGathererPrivate * const m_d;
};

} // namespace RemoteLinux

#endif // REMOTELINUXUSEDPORTSGATHERER_H