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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef DATASTORAGE_H
#define DATASTORAGE_H
#include "mediaelement.h"
#include <QHash>
#include <QThread>
class QueueWorker;
class DataStorage : public QObject
{
Q_OBJECT
public:
explicit DataStorage();
~DataStorage();
//! [Interface towards the model]
QList<int> idList();
MediaElement item(int id) const;
std::optional<int> currentlyFetchedId() const;
//! [Interface towards the model]
signals:
// Towards client
void dataUpdated(int id);
// Towards worker
void dataFetchNeeded(int index) const;
private slots:
// From worker
void fetchStarted(int index);
void fetchAborted(int index);
void dataReceived(int index, MediaElement element);
private:
QueueWorker *m_worker;
QList<int> m_idList;
QThread m_workerThread;
std::optional<int> m_currentlyFetchedId;
/* The item list is mutable as DataStorage needs to mark already signaled items to it in
* const data() call of model */
mutable QHash<int, MediaElement> m_items;
};
#endif // DATASTORAGE_H
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