//////////////////////////////////////////////////////////////////////////////
/// \file   LogAppender.cpp
/// \brief  Put Log message somewhere.
/// \author JD Gascuel.
/// \copyright (c) 2011-2016 JD Gascuel. All rights reserved.
/// $Id$
//////////////////////////////////////////////////////////////////////////////
//
// BSD 2-Clause License:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
//////////////////////////////////////////////////////////////////////////////

#include "Utils/LogAppender.h"

#include <QDateTime>
#include <QDir>
#include <QSettings>

//////////////////////////////////////////////////////////////////////////////
/// List of all currently defined appenders
/// NOTE: Use singleton to avoid messing-up with DLL on windows.

QList<LogAppender *>& LogAppender::list()
{
    static QList<LogAppender *> appenderList;
    return appenderList;
}

//////////////////////////////////////////////////////////////////////////////
// Add new instance to the list.
// TODO: Lock for threads-safe ?
LogAppender::LogAppender(int, char *[])
  : _minLevel(Log::LEVEL_INFO)
{
    //---- Manage list of all appenders.
    list().push_back(this);
}

//////////////////////////////////////////////////////////////////////////////
// Remove defunct instance from the list.
// TODO: Lock for threads-safe ?
LogAppender::~LogAppender() {
    list().removeAll(this);
}

void LogAppender::setMinLevel(Log::Level level)
{
    _minLevel = level;
    if( level < Log::minLevel )
        Log::minLevel = level;
}

void LogAppender::setFormat(const char *format)
{
    _format = format;
}

QString LogAppender::format(const Log &log) const
{
    QString line = _format.isEmpty()
            ? QString::fromUtf8(defaultFormat())
            : QString::fromUtf8(_format);

    line.replace("%d", QDate::currentDate().toString("yyyy/MM/dd").toLatin1());
    line.replace("%t", QTime::currentTime().toString("hh:mm:ss.zzz").toLatin1());
    line.replace("%o", (log.level == Log::LEVEL_TRACE  ) ? "TRACE  " :
                       (log.level == Log::LEVEL_DEBUG  ) ? "DEBUG  " :
                       (log.level == Log::LEVEL_INFO   ) ? "INFO   " :
                       (log.level == Log::LEVEL_WARNING) ? "WARNING" :
                       (log.level == Log::LEVEL_THROW  ) ? "THROW  " :
                       (log.level == Log::LEVEL_ERROR  ) ? "ERROR  " : "-------");
    line.replace("%l", QString::number(log.line).toLatin1());
    line.replace("%f", log.file);
    line.replace("%F", log.file.section('/', -1));
    line.replace("%p", log.function);
    line.replace("%m", log.message);

    return line;
}

//////////////////////////////////////////////////////////////////////////////
// Send to all instanciated appenders.
// TODO: Lock for threads-safe ?
void LogAppender::all(const Log& log)
{
    foreach(LogAppender* i, list())
    {
        if(  log.level >= i->_minLevel )
            (*i)(log);
    }
}