1 files changed, 38 insertions, 0 deletions
diff --git a/lib/events/eventrelation.cpp b/lib/events/eventrelation.cpp
new file mode 100644
index 00000000..04972f45
--- /dev/null
+++ b/lib/events/eventrelation.cpp
@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: 2022 Kitsune Ral <kitsune-ral@users.sf.net>
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#include "eventrelation.h"
+
+#include "../logging.h"
+#include "event.h"
+
+using namespace Quotient;
+
+void JsonObjectConverter<EventRelation>::dumpTo(QJsonObject& jo,
+                                                const EventRelation& pod)
+{
+    if (pod.type.isEmpty()) {
+        qCWarning(MAIN) << "Empty relation type; won't dump to JSON";
+        return;
+    }
+    jo.insert(RelTypeKey, pod.type);
+    jo.insert(EventIdKey, pod.eventId);
+    if (pod.type == EventRelation::AnnotationType)
+        jo.insert(QStringLiteral("key"), pod.key);
+}
+
+void JsonObjectConverter<EventRelation>::fillFrom(const QJsonObject& jo,
+                                                  EventRelation& pod)
+{
+    if (const auto replyJson = jo.value(EventRelation::ReplyType).toObject();
+        !replyJson.isEmpty()) {
+        pod.type = EventRelation::ReplyType;
+        fromJson(replyJson[EventIdKeyL], pod.eventId);
+    } else {
+        // The experimental logic for generic relationships (MSC1849)
+        fromJson(jo[RelTypeKey], pod.type);
+        fromJson(jo[EventIdKeyL], pod.eventId);
+        if (pod.type == EventRelation::AnnotationType)
+            fromJson(jo["key"_ls], pod.key);
+    }
+}