#include "msghandlerwapper.h"
#include <QtCore/QMetaType>
#include <QtCore/QMutex>
#include <QtCore/QMutexLocker>
#include <QtCore/QCoreApplication>
#include <QDateTime>

void msgHandlerFunction(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    QString text;
    text.append(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss") + " ");
    switch(type)
    {
        case QtDebugMsg:
            text.append("Debug:");
            break;

        case QtWarningMsg:
            text.append("Warning:");
            break;

        case QtCriticalMsg:
            text.append("Critical:");
            break;

        case QtFatalMsg:
            text.append("Fatal:");
    }

    text.append(msg);
    QMetaObject::invokeMethod(MsgHandlerWapper::instance(), "message"
                        , Q_ARG(QtMsgType, type)
                        , Q_ARG(QString, text));
}

MsgHandlerWapper * MsgHandlerWapper::m_instance = 0;

MsgHandlerWapper * MsgHandlerWapper::instance()
{
    static QMutex mutex;
    if (!m_instance) {
        QMutexLocker locker(&mutex);
        if (!m_instance)
            m_instance = new MsgHandlerWapper;
    }

    return m_instance;
}

MsgHandlerWapper::MsgHandlerWapper()
    :QObject(qApp)
{
    qRegisterMetaType<QtMsgType>("QtMsgType");
    qInstallMessageHandler(msgHandlerFunction);
}