/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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****************************************************************************/

#ifndef QMLDEBUGCLIENT_H
#define QMLDEBUGCLIENT_H

#include "qmldebug_global.h"
#include <qtcpsocket.h>

#include <QDataStream>

namespace QmlDebug {

class QmlDebugConnectionPrivate;
class QMLDEBUG_EXPORT QmlDebugConnection : public QIODevice
{
    Q_OBJECT
    Q_DISABLE_COPY(QmlDebugConnection)
public:
    QmlDebugConnection(QObject * = 0);
    ~QmlDebugConnection();

    void connectToHost(const QString &hostName, quint16 port);

    qint64 bytesAvailable() const;
    bool isConnected() const;
    QAbstractSocket::SocketState state() const;
    void flush();
    bool isSequential() const;
    void close();
    bool waitForConnected(int msecs = 30000);

signals:
    void connected();
    void stateChanged(QAbstractSocket::SocketState socketState);
    void error(QAbstractSocket::SocketError socketError);

protected:
    qint64 readData(char *data, qint64 maxSize);
    qint64 writeData(const char *data, qint64 maxSize);

private slots:
    void internalError(QAbstractSocket::SocketError error);

private:
    QmlDebugConnectionPrivate *d;
    friend class QmlDebugClient;
    friend class QmlDebugClientPrivate;
};

enum ClientStatus {
    NotConnected,
    Unavailable,
    Enabled
};

class QmlDebugClientPrivate;
class QMLDEBUG_EXPORT QmlDebugClient : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QmlDebugClient)
    Q_DISABLE_COPY(QmlDebugClient)

public:
    QmlDebugClient(const QString &, QmlDebugConnection *parent);
    ~QmlDebugClient();

    QString name() const;
    float serviceVersion() const;
    ClientStatus status() const;

    virtual void sendMessage(const QByteArray &);

protected:
    virtual void statusChanged(ClientStatus);
    virtual void messageReceived(const QByteArray &);

private:
    friend class QmlDebugConnection;
    friend class QmlDebugConnectionPrivate;
    QScopedPointer<QmlDebugClientPrivate> d_ptr;

public:
    static int s_dataStreamVersion;
};

class QMLDEBUG_EXPORT QmlDebugStream : public QDataStream
{
public:
    QmlDebugStream();
    explicit QmlDebugStream(QIODevice *d);
    QmlDebugStream(QByteArray *ba, QIODevice::OpenMode flags);
    QmlDebugStream(const QByteArray &ba);
};

} // namespace QmlDebug

#endif // QMLDEBUGCLIENT_H
