/*
Copyright (C) 2012 Sebastian Herbord. All rights reserved.

This file is part of Mod Organizer.

Mod Organizer is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Mod Organizer is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "filedialogmemory.h"
#include <QFileDialog>

FileDialogMemory::FileDialogMemory() {}

void FileDialogMemory::save(QSettings& settings) {
    settings.remove("recentDirectories");
    settings.beginWriteArray("recentDirectories");
    int index = 0;
    for (std::map<QString, QString>::const_iterator iter = instance().m_Cache.begin(); iter != instance().m_Cache.end();
         ++iter) {
        settings.setArrayIndex(index++);
        settings.setValue("name", iter->first);
        settings.setValue("directory", iter->second);
    }
    settings.endArray();
}

void FileDialogMemory::restore(QSettings& settings) {
    int size = settings.beginReadArray("recentDirectories");
    for (int i = 0; i < size; ++i) {
        settings.setArrayIndex(i);
        QVariant name = settings.value("name");
        QVariant dir = settings.value("directory");
        if (name.isValid() && dir.isValid()) {
            instance().m_Cache.insert(std::make_pair(name.toString(), dir.toString()));
        }
    }
    settings.endArray();
}

QString FileDialogMemory::getOpenFileName(const QString& dirID, QWidget* parent, const QString& caption,
                                          const QString& dir, const QString& filter, QString* selectedFilter,
                                          QFileDialog::Options options) {
    std::pair<std::map<QString, QString>::iterator, bool> currentDir =
        instance().m_Cache.insert(std::make_pair(dirID, dir));

    QString result =
        QFileDialog::getOpenFileName(parent, caption, currentDir.first->second, filter, selectedFilter, options);
    if (!result.isNull()) {
        instance().m_Cache[dirID] = QFileInfo(result).path();
    }
    return result;
}

QString FileDialogMemory::getExistingDirectory(const QString& dirID, QWidget* parent, const QString& caption,
                                               const QString& dir, QFileDialog::Options options) {
    std::pair<std::map<QString, QString>::iterator, bool> currentDir =
        instance().m_Cache.insert(std::make_pair(dirID, dir));

    QString result = QFileDialog::getExistingDirectory(parent, caption, currentDir.first->second, options);
    if (!result.isNull()) {
        instance().m_Cache[dirID] = QFileInfo(result).path();
    }
    return result;
}

FileDialogMemory& FileDialogMemory::instance() {
    static FileDialogMemory instance;
    return instance;
}