/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                               *
 * Copyright (C) 2018 Simon Stürz <simon.stuerz@guh.io>                          *
 *                                                                               *
 * This file is part of nymea-remoteproxy.                                       *
 *                                                                               *
 * 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 3 of the License, or             *
 * (at your option) any later version.                                           *
 *                                                                               *
 * 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 JSONHANDLER_H
#define JSONHANDLER_H

#include <QUuid>
#include <QTimer>
#include <QObject>
#include <QVariantMap>
#include <QMetaMethod>

#include "authentication/authenticator.h"

namespace remoteproxy {

class JsonReply;

class JsonHandler : public QObject
{
    Q_OBJECT
public:
    explicit JsonHandler(QObject *parent = nullptr);

    virtual QString name() const = 0;

    QVariantMap introspect(const QMetaMethod::MethodType &type);

    bool hasMethod(const QString &methodName);
    QPair<bool, QString> validateParams(const QString &methodName, const QVariantMap &params);
    QPair<bool, QString> validateReturns(const QString &methodName, const QVariantMap &returns);

private:
    QHash<QString, QString> m_descriptions;
    QHash<QString, QVariantMap> m_params;
    QHash<QString, QVariantMap> m_returns;

signals:
    void asyncReply(int id, const QVariantMap &params);

protected:
    void setDescription(const QString &methodName, const QString &description);
    void setParams(const QString &methodName, const QVariantMap &params);
    void setReturns(const QString &methodName, const QVariantMap &returns);

    QVariantMap errorToReply(Authenticator::AuthenticationError error) const;

    JsonReply *createReply(const QString &method, const QVariantMap &data) const;
    JsonReply *createAsyncReply(const QString &method) const;
};

}

#endif // JSONHANDLER_H