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// SPDX-FileCopyrightText: 2018 Kitsune Ral <kitsune-ral@users.sf.net>
// SPDX-License-Identifier: LGPL-2.1-or-later
#pragma once
#include "roomevent.h"
namespace Quotient {
/// Make a minimal correct Matrix state event JSON
inline QJsonObject basicStateEventJson(const QString& matrixTypeId,
const QJsonObject& content,
const QString& stateKey = {})
{
return { { TypeKey, matrixTypeId },
{ StateKeyKey, stateKey },
{ ContentKey, content } };
}
class QUOTIENT_API StateEventBase : public RoomEvent {
public:
static inline EventFactory<StateEventBase> factory { "StateEvent" };
StateEventBase(Type type, const QJsonObject& 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>;
//! \brief Override RoomEvent factory with that from StateEventBase if JSON has
//! stateKey
//!
//! This means in particular that an event with a type known to RoomEvent but
//! having stateKey set (even to an empty value) will be treated as a state
//! event and most likely end up as unknown (consider, e.g., m.room.message
//! that has stateKey set).
template <>
inline RoomEventPtr doLoadEvent(const QJsonObject& json,
const QString& matrixType)
{
if (json.contains(StateKeyKeyL))
return StateEventBase::factory.loadEvent(json, matrixType);
return RoomEvent::factory.loadEvent(json, matrixType);
}
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(fromJson<ContentT>(unsignedJson.value(PrevContentKeyL)),
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(fromJson<ContentT>(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, toJson(_content));
}
const ContentT& content() const { return _content; }
template <typename VisitorT>
void editContent(VisitorT&& visitor)
{
visitor(_content);
editJson()[ContentKeyL] = toJson(_content);
}
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
Q_DECLARE_METATYPE(Quotient::StateEventBase*)
Q_DECLARE_METATYPE(const Quotient::StateEventBase*)
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