/*!
 *
 * 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    filehandler.cpp
 * \date    2019/09/30
 * \author  Behrouz NematiPour
 *
 */
#include "filehandler.h"

//Qt
#include <QFileInfo>
#include <QProcess>
#include <QtConcurrent/QtConcurrent>
#include <QFuture>

// Project
#include "storageglobals.h"
#include "logger.h"
#include "threads.h"

// namespace
using namespace Storage;

/*!
 * \brief   FileHandler::write
 * \details Writes the content of vContent into the file vFileName.
 * \param   vFileName - Source file name
 * \param   vContent  - The content which is going to be written in the file.
 * \param   vAppend   - if set to true the content will be appended at the end of the file.
 * \return  false if file can't be opened.
 */
bool FileHandler::write(const QString &vFileName, const QString &vContent, bool vAppend)
{
    QFile file(vFileName);
    QIODevice::OpenMode openMode = vAppend ?
                QFile::Text | QFile::Append :
                QFile::Text | QFile::WriteOnly;
    if (! file.open(openMode)) {
        LOG_ERROR(QObject::tr("Can't open file for write (%1)").arg(vFileName));
        return false;
    }
    QTextStream out(&file);
    out << vContent;
    out.flush();
    return true;
}

/*!
 * \brief   FileHandler::read
 * \details reads file vFilename content into vContent variable.
 * \param   vFileName - Source file name
 * \param   vContent  - The content of the file which will be set when done.
 * \return  false if file can't be opened.
 */
bool FileHandler::read(const QString &vFileName, QString &vContent)
{
    QFile file(vFileName);
    if (! file.open(QFile::Text | QFile::ReadOnly)) {
        LOG_ERROR(QObject::tr("Can't open file for read (%1)").arg(vFileName));
        return false;
    }
    QTextStream in(&file);
    vContent = in.readAll();
    return true;
}

/*!
 * \brief   FileHandler::copyFolder
 * \details Copies all the file and folders recursively.
 * \param   vSource      - The source folder
 * \param   vDestination - The destination folder
 * \return  Tue on successful execution.
 * \note    This method uses the Linux "cp -r vSource vDestination" command
 *          Not a Thread-Safe.
 *
 */
int FileHandler::copyFolder(const QString &vSource, const QString &vDestination )
{
    QString cp = "cp";
    QStringList arguments;
    arguments << "-r" << vSource << vDestination;
    return QProcess::execute(cp, arguments);
}