/*
 *  Copyright (C) 2018 KeePassXC Team <team@keepassxc.org>
 *
 *  This program 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 2 or (at your option)
 *  version 3 of the License.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef KEEPASSXC_CUSTOMDATA_H
#define KEEPASSXC_CUSTOMDATA_H

#include <QDateTime>
#include <QHash>
#include <QObject>

#include "core/ModifiableObject.h"

class CustomData : public ModifiableObject
{
    Q_OBJECT

public:
    struct CustomDataItem
    {
        QString value;
        QDateTime lastModified;

        bool inline operator==(const CustomDataItem& rhs) const
        {
            // Compare only actual values, not modification dates
            return value == rhs.value;
        }
    };

    explicit CustomData(QObject* parent = nullptr);
    QList<QString> keys() const;
    bool hasKey(const QString& key) const;
    QString value(const QString& key) const;
    const CustomDataItem& item(const QString& key) const;
    bool contains(const QString& key) const;
    bool containsValue(const QString& value) const;
    QDateTime lastModified() const;
    QDateTime lastModified(const QString& key) const;
    bool isProtected(const QString& key) const;
    void set(const QString& key, CustomDataItem item);
    void set(const QString& key, const QString& value, const QDateTime& lastModified = {});
    void remove(const QString& key);
    void rename(const QString& oldKey, const QString& newKey);
    void clear();
    bool isEmpty() const;
    int size() const;
    int dataSize() const;
    void copyDataFrom(const CustomData* other);
    bool operator==(const CustomData& other) const;
    bool operator!=(const CustomData& other) const;

    // Pre-defined keys
    static const QString LastModified;
    static const QString Created;
    static const QString BrowserKeyPrefix;
    static const QString BrowserLegacyKeyPrefix;

    // Pre-KDBX 4.1
    static const QString ExcludeFromReportsLegacy;

signals:
    void aboutToBeAdded(const QString& key);
    void added(const QString& key);
    void aboutToBeRemoved(const QString& key);
    void removed(const QString& key);
    void aboutToRename(const QString& oldKey, const QString& newKey);
    void renamed(const QString& oldKey, const QString& newKey);
    void aboutToBeReset();
    void reset();

private slots:
    void updateLastModified(QDateTime lastModified = {});

private:
    QHash<QString, CustomDataItem> m_data;
};

#endif // KEEPASSXC_CUSTOMDATA_H