/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
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** 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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** 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
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****************************************************************************/

#ifndef QMAILLOG_H
#define QMAILLOG_H

#include "qmailglobal.h"
#include <QtDebug>

#ifdef QMAIL_SYSLOG

#include <QTextStream>

class QTOPIAMAIL_EXPORT SysLog
{
public:
    SysLog();
    virtual ~SysLog();
    template<typename T> SysLog& operator<<(const T&);
    template<typename T> SysLog& operator<<(const QList<T> &list);
    template<typename T> SysLog& operator<<(const QSet<T> &set);

private:
    void write(const QString& message);

private:
    QString buffer;
};

template <class T>
inline SysLog& SysLog::operator<<(const QList<T> &list)
{
    operator<<("(");
    for (Q_TYPENAME QList<T>::size_type i = 0; i < list.count(); ++i) {
        if (i)
            operator<<(", ");
        operator<<(list.at(i));
    }
    operator<<(")");
    return *this;
}

template <class T>
inline SysLog& SysLog::operator<<(const QSet<T> &set)
{
    operator<<("QSET");
    operator<<(set.toList());
    return *this;
}

template<typename T>
SysLog& SysLog::operator<<(const T& item)
{
    QTextStream stream(&buffer);
    stream << item;
    return *this;
}
#endif //QMAIL_SYSLOG

class QTOPIAMAIL_EXPORT QLogBase {
public:
#ifdef QMAIL_SYSLOG
    static SysLog log(const char*);
#else
    static QDebug log(const char*);
#endif
};

#define QLOG_DISABLE(dbgcat) \
    class dbgcat##_QLog : public QLogBase { \
    public: \
        static inline bool enabled() { return 0; }\
    };
#define QLOG_ENABLE(dbgcat) \
    class dbgcat##_QLog : public QLogBase { \
    public: \
        static inline bool enabled() { return 1; }\
    };

#define qMailLog(dbgcat) if(!dbgcat##_QLog::enabled()); else dbgcat##_QLog::log(#dbgcat)

#ifdef QMF_ENABLE_LOGGING
QLOG_ENABLE(Messaging)
QLOG_ENABLE(IMAP)
QLOG_ENABLE(SMTP)
QLOG_ENABLE(POP)
QLOG_DISABLE(ImapData)
QLOG_DISABLE(MessagingState)
#else
QLOG_DISABLE(Messaging)
QLOG_DISABLE(IMAP)
QLOG_DISABLE(SMTP)
QLOG_DISABLE(POP)
QLOG_DISABLE(ImapData)
QLOG_DISABLE(MessagingState)
#endif

#endif //QMAILLOG_H