feat: add joinrule api and joinrulesevent

CMakeLists.txt

@@ -165,6 +165,7 @@ list(APPEND lib_SRCS
     lib/events/roomkeyevent.h
     lib/events/stickerevent.h
     lib/events/filesourceinfo.h lib/events/filesourceinfo.cpp
+    lib/events/joinrulesevent.h lib/events/joinrulesevent.cpp
     lib/jobs/requestdata.h lib/jobs/requestdata.cpp
     lib/jobs/basejob.h lib/jobs/basejob.cpp
     lib/jobs/syncjob.h lib/jobs/syncjob.cpp

lib/events/joinrulesevent.cpp

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 2022 Carl Schwan <[email protected]>
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#include "joinrulesevent.h"
+
+using namespace Quotient;
+
+QString JoinRulesEvent::joinRule() const
+{
+    return fromJson<QString>(contentJson()["join_rule"_ls]);
+}
+
+QJsonArray JoinRulesEvent::allow() const
+{
+    return contentJson()["allow"_ls].toArray();
+}

lib/events/joinrulesevent.h

@@ -0,0 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Carl Schwan <[email protected]>
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#pragma once
+
+#include "stateevent.h"
+namespace Quotient {
+class JoinRulesEvent : public StateEvent {
+public:
+    QUO_EVENT(JoinRulesEvent, "m.room.join_rules")
+
+    explicit JoinRulesEvent(const QJsonObject& obj) : StateEvent(obj) {}
+
+    QString joinRule() const;
+    QJsonArray allow() const;
+};
+} // namespace Quotient

lib/room.cpp

@@ -37,6 +37,7 @@
 
 #include "events/callevents.h"
 #include "events/encryptionevent.h"
+#include "events/joinrulesevent.h"
 #include "events/reactionevent.h"
 #include "events/receiptevent.h"
 #include "events/redactionevent.h"
@@ -539,6 +540,11 @@ QString Room::predecessorId() const
     return {};
 }
 
+QString Room::joinRule() const
+{
+    return currentState().get<JoinRulesEvent>()->joinRule();
+}
+
 Room* Room::predecessor(JoinStates statesFilter) const
 {
     if (const auto& predId = predecessorId(); !predId.isEmpty())
@@ -2311,6 +2317,18 @@ void Room::setName(const QString& newName)
     setState<RoomNameEvent>(newName);
 }
 
+void Room::setJoinRule(const QString& joinRule)
+{
+    auto plEvent = currentState().get<RoomPowerLevelsEvent>();
+    auto pl = plEvent->powerLevelForState(JoinRulesEvent::TypeId);
+    auto currentPl = plEvent->powerLevelForUser(localUser()->id());
+    if (currentPl < pl) {
+        qWarning() << "Power level too low to set join rules";
+        return;
+    }
+    setState(JoinRulesEvent::TypeId, "", QJsonObject{ { "join_rule", joinRule } });
+}
+
 void Room::setCanonicalAlias(const QString& newAlias)
 {
     setState<RoomCanonicalAliasEvent>(newAlias, altAliases());

lib/room.h

@@ -117,6 +117,7 @@ class QUOTIENT_API Room : public QObject {
     Q_PROPERTY(Connection* connection READ connection CONSTANT)
     Q_PROPERTY(User* localUser READ localUser CONSTANT)
     Q_PROPERTY(QString id READ id CONSTANT)
+    Q_PROPERTY(QString joinRule READ joinRule WRITE setJoinRule NOTIFY joinRuleChanged)
     Q_PROPERTY(QString version READ version NOTIFY baseStateLoaded)
     Q_PROPERTY(bool isUnstable READ isUnstable NOTIFY stabilityUpdated)
     Q_PROPERTY(QString predecessorId READ predecessorId NOTIFY baseStateLoaded)
@@ -237,6 +238,7 @@ class QUOTIENT_API Room : public QObject {
     QString version() const;
     bool isUnstable() const;
     QString predecessorId() const;
+    [[nodiscard]] QString joinRule() const;
     /// Room predecessor
     /** This function validates that the predecessor has a tombstone and
      * the tombstone refers to the current room. If that's not the case,
@@ -842,6 +844,7 @@ public Q_SLOTS:
                                      const QString& stateKey,
                                      const QJsonObject& contentJson);
     void setName(const QString& newName);
+    void setJoinRule(const QString &joinRule);
     void setCanonicalAlias(const QString& newAlias);
     void setPinnedEvents(const QStringList& events);
     /// Set room aliases on the user's current server
@@ -949,6 +952,7 @@ public Q_SLOTS:
      * Not triggered when display name changes.
      */
     void namesChanged(Quotient::Room* room);
+    void joinRuleChanged();
     void displaynameAboutToChange(Quotient::Room* room);
     void displaynameChanged(Quotient::Room* room, QString oldName);
     void pinnedEventsChanged();