1 files changed, 36 insertions, 0 deletions
diff --git a/lib/events/single_key_value.h b/lib/events/single_key_value.h
new file mode 100644
index 00000000..ca2bd331
--- /dev/null
+++ b/lib/events/single_key_value.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include "converters.h"
+
+namespace Quotient {
+
+namespace EventContent {
+    template <typename T, const QLatin1String& KeyStr>
+    struct SingleKeyValue {
+        // NOLINTBEGIN(google-explicit-constructor): that check should learn
+        //                                           about explicit(false)
+        QUO_IMPLICIT SingleKeyValue(const T& v = {})
+            : value { v }
+        {}
+        QUO_IMPLICIT SingleKeyValue(T&& v)
+            : value { std::move(v) }
+        {}
+        // NOLINTEND(google-explicit-constructor)
+        T value;
+    };
+} // namespace EventContent
+
+template <typename ValueT, const QLatin1String& KeyStr>
+struct JsonConverter<EventContent::SingleKeyValue<ValueT, KeyStr>> {
+    using content_type = EventContent::SingleKeyValue<ValueT, KeyStr>;
+    static content_type load(const QJsonValue& jv)
+    {
+        return { fromJson<ValueT>(jv.toObject().value(JsonKey)) };
+    }
+    static QJsonObject dump(const content_type& c)
+    {
+        return { { JsonKey, toJson(c.value) } };
+    }
+    static inline const auto JsonKey = toSnakeCase(KeyStr);
+};
+} // namespace Quotient