/* Copyright 2013-2021 MultiMC Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "InstanceProxyModel.h"

#include "InstanceView.h"
#include "Application.h"
#include <BaseInstance.h>
#include <icons/IconList.h>

#include <QDebug>

InstanceProxyModel::InstanceProxyModel(QObject *parent) : QSortFilterProxyModel(parent) {
    m_naturalSort.setNumericMode(true);
    m_naturalSort.setCaseSensitivity(Qt::CaseSensitivity::CaseInsensitive);
    // FIXME: use loaded translation as source of locale instead, hook this up to translation changes
    m_naturalSort.setLocale(QLocale::system());
}

QVariant InstanceProxyModel::data(const QModelIndex & index, int role) const
{
    QVariant data = QSortFilterProxyModel::data(index, role);
    if(role == Qt::DecorationRole)
    {
        return QVariant(APPLICATION->icons()->getIcon(data.toString()));
    }
    return data;
}

bool InstanceProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const {
    const QString leftCategory = left.data(InstanceViewRoles::GroupRole).toString();
    const QString rightCategory = right.data(InstanceViewRoles::GroupRole).toString();
    if (leftCategory == rightCategory) {
        return subSortLessThan(left, right);
    }
    else {
        // FIXME: real group sorting happens in InstanceView::updateGeometries(), see LocaleString
        auto result = leftCategory.localeAwareCompare(rightCategory);
        if(result == 0) {
            return subSortLessThan(left, right);
        }
        return result < 0;
    }
}

bool InstanceProxyModel::subSortLessThan(const QModelIndex &left, const QModelIndex &right) const
{
    BaseInstance *pdataLeft = static_cast<BaseInstance *>(left.internalPointer());
    BaseInstance *pdataRight = static_cast<BaseInstance *>(right.internalPointer());
    QString sortMode = APPLICATION->settings()->get("InstSortMode").toString();
    if (sortMode == "LastLaunch")
    {
        return pdataLeft->lastLaunch() > pdataRight->lastLaunch();
    }
    else
    {
        return m_naturalSort.compare(pdataLeft->name(), pdataRight->name()) < 0;
    }
}