/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtOrganizer module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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** included in the packaging of this file. Please review the following
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****************************************************************************/

#ifndef QORGANIZERABSTRACTREQUEST_H
#define QORGANIZERABSTRACTREQUEST_H

#include <QtOrganizer/qorganizermanager.h>

QT_BEGIN_NAMESPACE_ORGANIZER

class QOrganizerManagerEngine;

class QOrganizerAbstractRequestPrivate;
class Q_ORGANIZER_EXPORT QOrganizerAbstractRequest : public QObject
{
    Q_OBJECT

public:
    ~QOrganizerAbstractRequest();

    enum State {
        InactiveState = 0,
        ActiveState,
        CanceledState,
        FinishedState
    };

    State state() const;
    inline bool isInactive() const { return state() == QOrganizerAbstractRequest::InactiveState; }
    inline bool isActive() const { return state() == QOrganizerAbstractRequest::ActiveState; }
    inline bool isCanceled() const { return state() == QOrganizerAbstractRequest::CanceledState; }
    inline bool isFinished() const { return state() == QOrganizerAbstractRequest::FinishedState; }

    QOrganizerManager::Error error() const;

    enum RequestType {
        InvalidRequest = 0,
        ItemOccurrenceFetchRequest,
        ItemFetchRequest,
        ItemFetchForExportRequest,
        ItemIdFetchRequest,
        ItemFetchByIdRequest,
        ItemRemoveRequest,
        ItemRemoveByIdRequest,
        ItemSaveRequest,
        CollectionFetchRequest,
        CollectionRemoveRequest,
        CollectionSaveRequest
    };

    RequestType type() const;

    QOrganizerManager* manager() const;
    void setManager(QOrganizerManager *manager);

public Q_SLOTS:
    bool start();
    bool cancel();
    bool waitForFinished(int msecs = 0);

Q_SIGNALS:
    void stateChanged(QOrganizerAbstractRequest::State newState);
    void resultsAvailable();

protected:
    QOrganizerAbstractRequest(QOrganizerAbstractRequestPrivate *other, QObject *parent = nullptr);
    QOrganizerAbstractRequestPrivate *d_ptr;

private:
    QOrganizerAbstractRequest(QObject *_parent = nullptr) : QObject(_parent), d_ptr(nullptr) {}
    Q_DISABLE_COPY(QOrganizerAbstractRequest)
    friend class QOrganizerManagerEngine;
    friend class QOrganizerAbstractRequestPrivate;

#ifndef QT_NO_DEBUG_STREAM
    friend Q_ORGANIZER_EXPORT QDebug operator<<(QDebug dbg, const QOrganizerAbstractRequest &request);
#endif
};

#ifndef QT_NO_DEBUG_STREAM
Q_ORGANIZER_EXPORT QDebug operator<<(QDebug dbg, const QOrganizerAbstractRequest &request);
#endif

QT_END_NAMESPACE_ORGANIZER

#endif // QORGANIZERABSTRACTREQUEST_H