/***************************************************************************
 *   Copyright © 2013 Aleix Pol Gonzalez <aleixpol@blue-systems.com>       *
 *   Copyright © 2017 Jan Grulich <jgrulich@redhat.com>                    *
 *                                                                         *
 *   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 of        *
 *   the License or (at your option) version 3 or any later version        *
 *   accepted by the membership of KDE e.V. (or its successor approved     *
 *   by the membership of KDE e.V.), which shall act as a proxy            *
 *   defined in Section 14 of 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 ODRSREVIEWSBACKEND_H
#define ODRSREVIEWSBACKEND_H

#include <ReviewsBackend/AbstractReviewsBackend.h>
#include <ReviewsBackend/ReviewsModel.h>

#include <QJsonDocument>
#include <QNetworkReply>
#include <QMap>

class KJob;
class AbstractResourcesBackend;
class CachedNetworkAccessManager;

class DISCOVERCOMMON_EXPORT OdrsReviewsBackend : public AbstractReviewsBackend
{
Q_OBJECT
public:
    explicit OdrsReviewsBackend();

    QString userName() const override;
    void login() override {}
    void logout() override {}
    void registerAndLogin() override {}

    Rating * ratingForApplication(AbstractResource *app) const override;
    bool hasCredentials() const override { return false; }
    void deleteReview(Review *) override {}
    void fetchReviews(AbstractResource *app, int page = 1) override;
    bool isFetching() const override { return m_isFetching; }
    void submitReview(AbstractResource *, const QString &summary, const QString &description, const QString &rating) override;
    void flagReview(Review *, const QString &, const QString &) override {}
    void submitUsefulness(Review *review, bool useful) override;
    bool isResourceSupported(AbstractResource * res) const override;
    void emitRatingFetched(AbstractResourcesBackend* backend, const QList<AbstractResource*>& res) const;

private Q_SLOTS:
    void ratingsFetched(KJob *job);
    void reviewsFetched();
    void reviewSubmitted(QNetworkReply *reply);
    void usefulnessSubmitted();

Q_SIGNALS:
    void ratingsReady();

private:
    QNetworkAccessManager* nam();
    void parseRatings();
    void parseReviews(const QJsonDocument &document, AbstractResource *resource);

    QHash<QString, Rating*> m_ratings;
    bool m_isFetching;
    CachedNetworkAccessManager* m_delayedNam = nullptr;
};

#endif // ODRSREVIEWSBACKEND_H

