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/******************************************************************************
* Copyright (C) 2018 Kitsune Ral <kitsune-ral@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "roomevent.h"
namespace QMatrixClient {
class StateEventBase: public RoomEvent
{
public:
using factory_t = EventFactory<StateEventBase>;
using RoomEvent::RoomEvent;
~StateEventBase() override = default;
bool isStateEvent() const override { return true; }
QString replacedState() const;
void dumpTo(QDebug dbg) const override;
virtual bool repeatsState() const;
};
using StateEventPtr = event_ptr_tt<StateEventBase>;
using StateEvents = EventsArray<StateEventBase>;
/**
* A combination of event type and state key uniquely identifies a piece
* of state in Matrix.
* \sa https://matrix.org/docs/spec/client_server/unstable.html#types-of-room-events
*/
using StateEventKey = std::pair<QString, QString>;
template <typename ContentT>
struct Prev
{
template <typename... ContentParamTs>
explicit Prev(const QJsonObject& unsignedJson,
ContentParamTs&&... contentParams)
: senderId(unsignedJson.value("prev_sender"_ls).toString())
, content(unsignedJson.value(PrevContentKeyL).toObject(),
std::forward<ContentParamTs>(contentParams)...)
{ }
QString senderId;
ContentT content;
};
template <typename ContentT>
class StateEvent: public StateEventBase
{
public:
using content_type = ContentT;
template <typename... ContentParamTs>
explicit StateEvent(Type type, const QJsonObject& fullJson,
ContentParamTs&&... contentParams)
: StateEventBase(type, fullJson)
, _content(contentJson(),
std::forward<ContentParamTs>(contentParams)...)
{
const auto& unsignedData = unsignedJson();
if (unsignedData.contains(PrevContentKeyL))
_prev = std::make_unique<Prev<ContentT>>(unsignedData,
std::forward<ContentParamTs>(contentParams)...);
}
template <typename... ContentParamTs>
explicit StateEvent(Type type, event_mtype_t matrixType,
ContentParamTs&&... contentParams)
: StateEventBase(type, matrixType)
, _content(std::forward<ContentParamTs>(contentParams)...)
{
editJson().insert(ContentKey, _content.toJson());
}
const ContentT& content() const { return _content; }
template <typename VisitorT>
void editContent(VisitorT&& visitor)
{
visitor(_content);
editJson()[ContentKeyL] = _content.toJson();
}
[[deprecated("Use prevContent instead")]]
const ContentT* prev_content() const { return prevContent(); }
const ContentT* prevContent() const
{ return _prev ? &_prev->content : nullptr; }
QString prevSenderId() const
{ return _prev ? _prev->senderId : QString(); }
private:
ContentT _content;
std::unique_ptr<Prev<ContentT>> _prev;
};
} // namespace QMatrixClient
namespace std {
template <> struct hash<QMatrixClient::StateEventKey>
{
size_t operator()(const QMatrixClient::StateEventKey& k) const Q_DECL_NOEXCEPT
{
return qHash(k);
}
};
}
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