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#ifndef QREMOTESERVICEREGISTER_H
#define QREMOTESERVICEREGISTER_H

#include "qserviceframeworkglobal.h"
#include <QObject>
#include <QQueue>
#include <QHash>
#include <QDebug>
#include <QExplicitlySharedDataPointer>

#include "qserviceclientcredentials.h"
#include "qservice.h"

QT_BEGIN_NAMESPACE

class QRemoteServiceRegisterPrivate;
class QRemoteServiceRegisterEntryPrivate;
class QServiceClientCredentialsPrivate;
class QServiceClientCredentials;

class Q_SERVICEFW_EXPORT QRemoteServiceRegister : public QObject
{
    Q_OBJECT
    Q_PROPERTY(bool quitOnLastInstanceClosed READ quitOnLastInstanceClosed WRITE setQuitOnLastInstanceClosed)
    Q_FLAGS(SocketAccessOption SecurityAccessOptions)
public:

    enum InstanceType {
        GlobalInstance = 0,
        PrivateInstance
    };

    enum SecurityAccessOption {
        NoOptions = 0x0,
        UserAccessOption  =   0x01,
        GroupAccessOption  =  0x02,
        OtherAccessOption  =  0x04,
        WorldAccessOption  =  0x07
    };
    Q_DECLARE_FLAGS(SecurityAccessOptions, SecurityAccessOption)

    typedef QObject *(*CreateServiceFunc)();

    class Q_SERVICEFW_EXPORT Entry {
    public:
        Entry();
        Entry(const Entry &);
        Entry &operator=(const Entry &);

        ~Entry();

        bool operator==(const Entry &) const;
        bool operator!=(const Entry &) const;

        bool isValid() const;

        QString interfaceName() const;
        QString serviceName() const;
        QString version() const;

        void setInstantiationType(QRemoteServiceRegister::InstanceType type);
        QRemoteServiceRegister::InstanceType instantiationType() const;

    private:
        QExplicitlySharedDataPointer<QRemoteServiceRegisterEntryPrivate> d;

        const QMetaObject* metaObject() const;

        friend class QRemoteServiceRegisterPrivate;
        friend class QRemoteServiceRegister;
        friend class InstanceManager;
        friend class QServiceManager;
#ifndef QT_NO_DATASTREAM
        friend Q_SERVICEFW_EXPORT QDataStream &operator<<(QDataStream &, const QRemoteServiceRegister::Entry &);
        friend Q_SERVICEFW_EXPORT QDataStream &operator>>(QDataStream &, QRemoteServiceRegister::Entry &);
#endif
    };

    explicit QRemoteServiceRegister(QObject* parent = Q_NULLPTR);
    ~QRemoteServiceRegister();

    template <typename T>
    Entry createEntry(const QString& serviceName,
                    const QString& interfaceName, const QString& version);

    void publishEntries(const QString& ident );

    bool quitOnLastInstanceClosed() const;
    void setQuitOnLastInstanceClosed(const bool quit);

    typedef void (*SecurityFilter)(QServiceClientCredentials *creds);
    SecurityFilter setSecurityFilter(SecurityFilter filter);

    SecurityAccessOptions securityAccessOptions() const;
    void setSecurityAccessOptions(SecurityAccessOptions options);

    qintptr getBaseUserIdentifier() const;
    void setBaseUserIdentifier(qintptr uid);

    qintptr getBaseGroupIdentifier() const;
    void setBaseGroupIdentifier(qintptr gid);

Q_SIGNALS:
    void allInstancesClosed();
    void instanceClosed(const QRemoteServiceRegister::Entry& entry);

private:

    Entry createEntry(const QString& serviceName,
                    const QString& interfaceName, const QString& version,
                    CreateServiceFunc cptr, const QMetaObject* meta);

    void init();
    bool event(QEvent *e);

    QRemoteServiceRegisterPrivate* d;
};

inline uint qHash(const QRemoteServiceRegister::Entry& e) {
    //Only consider version, iface and service name -> needs to sync with operator==
    return ( qHash(e.serviceName()) + qHash(e.interfaceName()) + qHash(e.version()) );
}

#ifndef QT_NO_DATASTREAM
Q_SERVICEFW_EXPORT QDataStream& operator>>(QDataStream& s, QRemoteServiceRegister::Entry& entry);
Q_SERVICEFW_EXPORT QDataStream& operator<<(QDataStream& s, const QRemoteServiceRegister::Entry& entry);
#endif

#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QRemoteServiceRegister::Entry& entry);
#endif

template <typename T>
QObject* qServiceTypeConstructHelper()
{
    return new T;
}

template <typename T>
QRemoteServiceRegister::Entry QRemoteServiceRegister::createEntry(const QString& serviceName,
                const QString& interfaceName, const QString& version)
{

    QRemoteServiceRegister::CreateServiceFunc cptr = qServiceTypeConstructHelper<T>;
    return createEntry(serviceName, interfaceName, version, cptr, &T::staticMetaObject);
}


QT_END_NAMESPACE
#endif //QREMOTESERVICEREGISTER_H