Only show actions, when you have permissions to do them

src/timeline/Permissions.cpp

@@ -0,0 +1,63 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "Permissions.h"
+
+#include "Cache_p.h"
+#include "MatrixClient.h"
+#include "TimelineModel.h"
+
+Permissions::Permissions(TimelineModel *parent)
+  : QObject(parent)
+  , room(parent)
+{
+        invalidate();
+}
+
+void
+Permissions::invalidate()
+{
+        pl = cache::client()
+               ->getStateEvent<mtx::events::state::PowerLevels>(room->roomId().toStdString())
+               .value_or(mtx::events::StateEvent<mtx::events::state::PowerLevels>{})
+               .content;
+}
+
+bool
+Permissions::canInvite()
+{
+        return pl.user_level(http::client()->user_id().to_string()) >= pl.invite;
+}
+
+bool
+Permissions::canBan()
+{
+        return pl.user_level(http::client()->user_id().to_string()) >= pl.ban;
+}
+
+bool
+Permissions::canKick()
+{
+        return pl.user_level(http::client()->user_id().to_string()) >= pl.kick;
+}
+
+bool
+Permissions::canRedact()
+{
+        return pl.user_level(http::client()->user_id().to_string()) >= pl.redact;
+}
+bool
+Permissions::canChange(int eventType)
+{
+        return pl.user_level(http::client()->user_id().to_string()) >=
+               pl.state_level(to_string(qml_mtx_events::fromRoomEventType(
+                 static_cast<qml_mtx_events::EventType>(eventType))));
+}
+bool
+Permissions::canSend(int eventType)
+{
+        return pl.user_level(http::client()->user_id().to_string()) >=
+               pl.event_level(to_string(qml_mtx_events::fromRoomEventType(
+                 static_cast<qml_mtx_events::EventType>(eventType))));
+}