/*
 * Copyright 2016-2020 Dmitry Ivanov
 *
 * This file is part of libquentier
 *
 * libquentier is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * libquentier 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with libquentier. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef LIB_QUENTIER_ENML_DECRYPTED_TEXT_MANAGER_P_H
#define LIB_QUENTIER_ENML_DECRYPTED_TEXT_MANAGER_P_H

#include <quentier/utility/EncryptionManager.h>

#include <QHash>
#include <QtGlobal>

namespace quentier {

class Q_DECL_HIDDEN DecryptedTextManagerPrivate
{
public:
    DecryptedTextManagerPrivate() = default;

    void addEntry(
        const QString & hash, const QString & decryptedText,
        const bool rememberForSession, const QString & passphrase,
        const QString & cipher, const size_t keyLength);

    void removeEntry(const QString & hash);

    void clearNonRememberedForSessionEntries();

    bool findDecryptedTextByEncryptedText(
        const QString & encryptedText, QString & decryptedText,
        bool & rememberForSession) const;

    bool modifyDecryptedText(
        const QString & originalHash, const QString & newDecryptedText,
        QString & newEncryptedText);

private:
    Q_DISABLE_COPY(DecryptedTextManagerPrivate)

private:
    struct Data
    {
        QString m_decryptedText;
        QString m_passphrase;
        QString m_cipher;
        size_t m_keyLength = 0;
        bool m_rememberForSession = false;
    };

    using DataHash = QHash<QString, Data>;

private:
    DataHash m_dataHash;
    DataHash m_staleDataHash;
    EncryptionManager m_encryptionManager;
};

} // namespace quentier

#endif // LIB_QUENTIER_ENML_DECRYPTED_TEXT_MANAGER_P_H
