/*!
 *
 * Copyright (c) 2019-2019 Diality Inc. - All Rights Reserved.
 * \copyright                                                       \n
 *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,  \n
 *          IN PART OR IN WHOLE,                                    \n
 *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER. \n
 *
 * \file    logger.cpp
 * \date    2019/09/30
 * \author  Behrouz NematiPour
 *
 */
#include "logger.h"

// Qt
#include <QDateTime>
#include <QDebug>
#include <QDir>
#include <QApplication>
#include <QtConcurrent/QtConcurrent>
#include <QFuture>

// Project
#include "storageglobals.h"
#include "filehandler.h"

using namespace Storage;

// Singleton
SINGLETON_INIT(Logger)


Logger::Logger(QObject *parent) : QObject(parent) { }

bool Logger::init()
{
    checkLogPath();
    qRegisterMetaType<LogType>("LogType");
    initConnections();
    return true;
}

void Logger::initConnections() { }

void Logger::checkLogPath()
{
    setLogBasePath();           // try to use /media/sd_card on device
    if (! setLogPath()) {       // check and create log folders & if unsuccessful then
        setLogBasePath(true);   // try to use application folder
        setLogPath    (    );   // check and create log folders // Note: it may require to check for write access regarding device setup
    }
}

void Logger::setLogBasePath(bool vUseApplicationDirPath)
{
    if (vUseApplicationDirPath) {
        _dir.setPath(qApp->applicationDirPath());
        qDebug() << "WARNING :" << tr("Application Dir Path used for events logging (%1)").arg(_dir.path());
    } else {
        _dir.setPath(Log_Base_Path_Name);
    }
}

bool Logger::setLogPath()
{
    bool ok = true;
    ok = ok && setLogPath(LogType::eLogDatum);
    ok = ok && setLogPath(LogType::eLogEvent);
    ok = ok && setLogPath(LogType::eLogError);
    return ok;
}

bool Logger::setLogPath(LogType vLogType)
{
    _logPathNames[vLogType] = _dir.path() + "/" + _logBasePathNames[vLogType];
    if ( ! _dir.exists(_logBasePathNames[vLogType]) ) {
        if ( ! _dir.mkpath(_logBasePathNames[vLogType]) ) {
            qDebug() << "ERROR :" << tr("Can't create %1 log path (%2)")
                        .arg(_logPrefix[vLogType])
                        .arg(_logPathNames[vLogType])
                        ;
            return false;
        }
    }
    return true;
}

bool Logger::log(const QString &vContent, LogType vLogType) {
    //qDebug() << QThread::currentThread()->objectName();

    QString date = QDate::currentDate().toString(_dateFormat);
    QString mContent;

    switch (vLogType) {
    case eLogDatum:
    case eLogEvent:
    case eLogError:
        break;
    default:
        Q_ASSERT_X(false, "Logger::log", "Incorrect type of logging");
    }
    mContent += _logPrefix[vLogType];
    mContent += _prefixSeparator;
    mContent += QTime::currentTime().toString(_timeFormat);
    mContent += _timeSeparator + vContent;
    QString fileName = date + _dateSeparator + Log_File_Name;
    _FileHandler->onWrite(_logPathNames[vLogType] + fileName, mContent + "\r\n");
    qDebug().noquote() << mContent;

    return true;
}

void Logger::doLog(const QString &vContent, LogType vLogType)
{
    // // QMetaObject::invokeMethod(this, "log", Qt::AutoConnection, Q_ARG(QString, vContent) , Q_ARG(LogType, vLogType));

    // /* QFuture<bool> future = */QtConcurrent::run(this,&Logger::log, vContent, vLogType);
    // // qDebug() << future.result();

    log(vContent, vLogType);
}