/****************************************************************************
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** Copyright (C) 2022 The Qt Company Ltd.
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** This file is part of the QtNetwork module of the Qt Toolkit.
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** information use the contact form at https://www.qt.io/contact-us.
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** $QT_END_LICENSE$
**
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******************************************************************************/

#ifndef QNETWORKINFORMATION_H
#define QNETWORKINFORMATION_H

#include <QtNetwork/qtnetworkglobal.h>
#include <QtCore/qobject.h>
#include <QtCore/qstringview.h>
#include <QtCore/qstringlist.h>

QT_BEGIN_NAMESPACE

class QNetworkInformationBackend;
class QNetworkInformationPrivate;
struct QNetworkInformationDeleter;
class Q_NETWORK_EXPORT QNetworkInformation : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QNetworkInformation)
    Q_PROPERTY(Reachability reachability READ reachability NOTIFY reachabilityChanged)
    Q_PROPERTY(bool isBehindCaptivePortal READ isBehindCaptivePortal
               NOTIFY isBehindCaptivePortalChanged)
public:
    enum class Reachability {
        Unknown,
        Disconnected,
        Local,
        Site,
        Online,
    };
    Q_ENUM(Reachability)

    enum class Feature {
        Reachability = 0x1,
        CaptivePortal = 0x2,
    };
    Q_DECLARE_FLAGS(Features, Feature)
    Q_FLAG(Features)

    Reachability reachability() const;

    bool isBehindCaptivePortal() const;

    QString backendName() const;

    bool supports(Features features) const;

    static bool load(QStringView backend);
    static bool load(Features features);
    static QStringList availableBackends();
    static QNetworkInformation *instance();

Q_SIGNALS:
    void reachabilityChanged(Reachability newReachability);
    void isBehindCaptivePortalChanged(bool state);

private:
    friend struct QNetworkInformationDeleter;
    friend class QNetworkInformationPrivate;
    QNetworkInformation(QNetworkInformationBackend *backend);
    ~QNetworkInformation() override;

    Q_DISABLE_COPY_MOVE(QNetworkInformation)
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QNetworkInformation::Features)

QT_END_NAMESPACE

#endif