/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** 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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**
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** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
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****************************************************************************/

#include "qmldebugclient.h"
#include <private/qobject_p.h>
#include <QtDeclarative/qpacketprotocol.h>
#include <QtCore/qdebug.h>
#include <QtCore/qstringlist.h>

QT_BEGIN_NAMESPACE

class QmlDebugConnectionPrivate : public QObject
{
    Q_OBJECT
public:
    QmlDebugConnectionPrivate(QmlDebugConnection *c);
    QmlDebugConnection *q;
    QPacketProtocol *protocol;

    QStringList enabled;
    QHash<QString, QmlDebugClient *> plugins;
public Q_SLOTS:
    void connected();
    void readyRead();
};

QmlDebugConnectionPrivate::QmlDebugConnectionPrivate(QmlDebugConnection *c)
: QObject(c), q(c), protocol(0)
{
    protocol = new QPacketProtocol(q, this);
    QObject::connect(c, SIGNAL(connected()), this, SLOT(connected()));
    QObject::connect(protocol, SIGNAL(readyRead()), this, SLOT(readyRead()));
}

void QmlDebugConnectionPrivate::connected()
{
    QPacket pack;
    pack << QString(QLatin1String("QmlDebugServer")) << enabled;
    protocol->send(pack);
}

void QmlDebugConnectionPrivate::readyRead()
{
    QPacket pack = protocol->read();
    QString name; QByteArray message;
    pack >> name >> message;

    QHash<QString, QmlDebugClient *>::Iterator iter = 
        plugins.find(name);
    if (iter == plugins.end()) {
        qWarning() << "QmlDebugConnection: Message received for missing plugin" << name;
    } else {
        (*iter)->messageReceived(message);
    }
}

QmlDebugConnection::QmlDebugConnection(QObject *parent)
: QTcpSocket(parent), d(new QmlDebugConnectionPrivate(this))
{
}

bool QmlDebugConnection::isConnected() const
{
    return state() == ConnectedState;
}

class QmlDebugClientPrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QmlDebugClient);
public:
    QmlDebugClientPrivate();

    QString name;
    QmlDebugConnection *client;
    bool enabled;
};

QmlDebugClientPrivate::QmlDebugClientPrivate()
: client(0), enabled(false)
{
}

QmlDebugClient::QmlDebugClient(const QString &name, 
                                           QmlDebugConnection *parent)
: QObject(*(new QmlDebugClientPrivate), parent)
{
    Q_D(QmlDebugClient);
    d->name = name;
    d->client = parent;

    if (!d->client)
        return;

    if (d->client->d->plugins.contains(name)) {
        qWarning() << "QmlDebugClient: Conflicting plugin name" << name;
        d->client = 0;
    } else {
        d->client->d->plugins.insert(name, this);
    }
}

QString QmlDebugClient::name() const
{
    Q_D(const QmlDebugClient);
    return d->name;
}

bool QmlDebugClient::isEnabled() const
{
    Q_D(const QmlDebugClient);
    return d->enabled;
}

void QmlDebugClient::setEnabled(bool e)
{
    Q_D(QmlDebugClient);
    if (e == d->enabled)
        return;

    d->enabled = e;

    if (d->client) {
        if (e) 
            d->client->d->enabled.append(d->name);
        else
            d->client->d->enabled.removeAll(d->name);

        if (d->client->state() == QTcpSocket::ConnectedState) {
            QPacket pack;
            pack << QString(QLatin1String("QmlDebugServer"));
            if (e) pack << (int)1;
            else pack << (int)2;
            pack << d->name;
            d->client->d->protocol->send(pack);
        }
    }
}

bool QmlDebugClient::isConnected() const
{
    Q_D(const QmlDebugClient);

    return d->client->isConnected();
}

void QmlDebugClient::sendMessage(const QByteArray &message)
{
    Q_D(QmlDebugClient);

    if (!d->client || !d->client->isConnected())
        return;

    QPacket pack;
    pack << d->name << message;
    d->client->d->protocol->send(pack);
}

void QmlDebugClient::messageReceived(const QByteArray &)
{
}

QT_END_NAMESPACE

#include "qmldebugclient.moc"