/*!
 *
 * Copyright (c) 2021-2022 Diality Inc. - All Rights Reserved.
 * \copyright
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * \file    MSettings.cpp
 * \author  (last)      Behrouz NematiPour
 * \date    (last)      05-Apr-2022
 * \author  (original)  Behrouz NematiPour
 * \date    (original)  29-Mar-2021
 *
 */
#include "MSettings.h"

// Qt
#include <QThread>

// Project

// name spaces
using namespace Storage;

/*!
 * \brief   MSettings::MSettings
 * \details The constructor
 * \param   parent
 */
MSettings::MSettings(QObject *parent) : QObject(parent) { }

/*!
 * \brief   MSettings::groups
 * \details Returns all the groups of the settings
 * \return  list of the groups as list of strings
 */
QStringList MSettings::groups()
{
    QMutexLocker locker(&_mutex);
    return _settings.keys();
}

/*!
 * \brief   MSettings::keys
 * \details returns all keys in a group
 * \param   vGroup  - the group to look for all the keys
 * \return  list of the keys in QString for the group vGroup
 */
QStringList MSettings::keys(const QString &vGroup)
{
    const QMutexLocker locker(&_mutex);
    return _settings[vGroup].keys;
}

QString MSettings::key(const QString &vGroup, uint vIndex)
{
    QStringList mKeys   = keys(vGroup);
    QString mKey        = "[Unknown %1]";
    if ( vIndex < (unsigned)mKeys.count() ) {
        mKey            = mKeys   [vIndex];
    } else {
        mKey            = mKey.arg(vIndex);
    }
    return mKey;
}

/*!
 * \brief   MSettings::values
 * \details returns all values in a group
 * \param   vGroup  - the group to look for all the values
 * \return  list of the values in QString for the group vGroup
 */
QVariantList MSettings::values(const QString &vGroup)
{
    QMutexLocker locker(&_mutex);
    return _settings[vGroup].values;
}

/*!
 * \brief   MSettings::value
 * \details returns value of a key for the given group
 * \param   vGroup  - the group to look for the value
 * \param   vKey    - the key to look for the value
 * \return  the values in QString for the group vGroup
 */
QVariant MSettings::value(const QString &vGroup, const QString &vKey)
{
    QMutexLocker locker(&_mutex);
    int index = _settings[vGroup].keys.indexOf(vKey);
    if ( index >= 0 )
        return _settings[vGroup].values.at(index);
    return QVariant();
}

/*!
 * \brief   MSettings::location
 * \details The locations where the settings have been read for the group vGroup
 * \param   vGroup  - the group to look for the location
 * \return  the location in QString
 */
QString MSettings::location(const QString &vGroup)
{
    QMutexLocker locker(&_mutex);
    return _settings[vGroup].location;
}

/*!
 * \brief   MSettings::groups
 * \details The groups where have been read from the location vLocation
 * \param   vLocation  - The location to look for the group(s)
 * \return  the groups in QString
 */
QStringList MSettings::groups(const QString &vCategory)
{
    QMutexLocker locker(&_mutex);
    return _category[vCategory];
}

/*!
 * \brief   MSettings::categorys
 * \details The list of all the categories in the setting
 * \return  the categories in QStringList
 */
QStringList MSettings::categorys()
{
    QMutexLocker locker(&_mutex);
    return _category.keys();
}

/*!
 * \brief   MSettings::add
 * \details The function to be used to add elements in the settings
 * \param   vGroup      - the group of the settings
 * \param   vKey        - the key to be added under the group vGroup
 * \param   vValue      - the value of the key to be added under group vGroup for the key vKey
 * \param   vLocation   - the location of the setting data if is different will be set.
 * \param   vLocation   - the category of the setting data which by default is the base location if has extra folder + filename.
 */
void MSettings::add(const QString &vGroup, const QString &vKey, const QVariant &vValue, const QString &vLocation, const QString &vCategory, bool vEnableDuplicateKeys)
{
    QMutexLocker locker(&_mutex);
    if ( ! _category[vCategory].contains(vGroup) ) _category[vCategory] += vGroup;

    KeyValue mGroup = _settings[vGroup];
    if ( mGroup.location != vLocation ) mGroup.location  = vLocation;
    if ( mGroup.category != vCategory ) mGroup.category  = vCategory;
    if ( vEnableDuplicateKeys ) {
        mGroup.keys      += vKey     ;
        mGroup.values    += vValue   ;
    } else {
        if ( mGroup.keys.contains(vKey)) {
            int index = mGroup.keys.indexOf(vKey);
            mGroup.values[index] = vValue;
        }
        else {
            mGroup.keys      += vKey     ;
            mGroup.values    += vValue   ;
        }
    }
    _settings[vGroup] = mGroup;
}

/********** The common helper functions **********/

/*!
 * \brief   Settings::getDatetimeFormat
 * \details Get the date time format
 * \return  The String output of the data/time format.
 */
void MSettings::datetimeFormat()
{
    QVariant dateFotmat = _Settings.value("Date", "Format");
    QVariant timeFotmat = _Settings.value("Time", "Format");
    if (dateFotmat.isValid() && timeFotmat.isValid())
        _datetimeFormat = dateFotmat.toString() + " " + timeFotmat.toString();
}