/*
 *  Copyright (C) 2011 Felix Geyer <debfx@fobos.de>
 *  Copyright (C) 2017 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 KEEPASSX_DATABASEOPENWIDGET_H
#define KEEPASSX_DATABASEOPENWIDGET_H

#include <QPointer>
#include <QScopedPointer>
#include <QTimer>

#include "config-keepassx.h"
#include "gui/DialogyWidget.h"
#ifdef WITH_XC_YUBIKEY
#include "osutils/DeviceListener.h"
#endif

class CompositeKey;
class Database;
class QFile;

namespace Ui
{
    class DatabaseOpenWidget;
}

class DatabaseOpenWidget : public DialogyWidget
{
    Q_OBJECT

public:
    explicit DatabaseOpenWidget(QWidget* parent = nullptr);
    ~DatabaseOpenWidget() override;
    void load(const QString& filename);
    QString filename();
    void clearForms();
    void enterKey(const QString& pw, const QString& keyFile);
    QSharedPointer<Database> database();
    bool unlockingDatabase();

    // Quick Unlock helper functions
    bool canPerformQuickUnlock() const;
    bool isOnQuickUnlockScreen() const;
    void toggleQuickUnlockScreen();
    void triggerQuickUnlock();
    void resetQuickUnlock();

signals:
    void dialogFinished(bool accepted);

protected:
    bool event(QEvent* event) override;
    QSharedPointer<CompositeKey> buildDatabaseKey();
    void setUserInteractionLock(bool state);

    const QScopedPointer<Ui::DatabaseOpenWidget> m_ui;
    QSharedPointer<Database> m_db;
    QString m_filename;
    bool m_retryUnlockWithEmptyPassword = false;

protected slots:
    virtual void openDatabase();
    void reject();

private slots:
    bool browseKeyFile();
    void toggleHardwareKeyComponent(bool state);
    void pollHardwareKey(bool manualTrigger = false);
    void hardwareKeyResponse(bool found);

private:
#ifdef WITH_XC_YUBIKEY
    QPointer<DeviceListener> m_deviceListener;
#endif
    bool m_pollingHardwareKey = false;
    bool m_manualHardwareKeyRefresh = false;
    bool m_blockQuickUnlock = false;
    bool m_unlockingDatabase = false;
    QTimer m_hideTimer;
    QTimer m_hideNoHardwareKeysFoundTimer;

    Q_DISABLE_COPY(DatabaseOpenWidget)
};

#endif // KEEPASSX_DATABASEOPENWIDGET_H