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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 Quotient {
/// Make a minimal correct Matrix state event JSON
template <typename StrT>
inline QJsonObject basicStateEventJson(StrT matrixType,
const QJsonObject& content,
const QString& stateKey = {})
{
return { { TypeKey, std::forward<StrT>(matrixType) },
{ StateKeyKey, stateKey },
{ ContentKey, content } };
}
class StateEventBase : public RoomEvent {
public:
using factory_t = EventFactory<StateEventBase>;
StateEventBase(Type type, const QJsonObject& json) : RoomEvent(type, json)
{}
StateEventBase(Type type, event_mtype_t matrixType,
const QString& stateKey = {},
const QJsonObject& contentJson = {});
~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>;
template <>
inline bool is<StateEventBase>(const Event& e)
{
return e.isStateEvent();
}
/**
* 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 = QPair<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,
const QString& stateKey,
ContentParamTs&&... contentParams)
: StateEventBase(type, matrixType, stateKey)
, _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 Quotient
namespace std {
template <>
struct hash<Quotient::StateEventKey> {
size_t operator()(const Quotient::StateEventKey& k) const Q_DECL_NOEXCEPT
{
return qHash(k);
}
};
} // namespace std
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