public override Event Read(ref Utf8JsonReader reader, Type _, JsonSerializerOptions options)
{
if (JsonDocument.TryParseValue(ref reader, out var doc) &&
doc.RootElement.TryGetProperty(sTypePropertyName, out var typeProperty) &&
doc.RootElement.TryGetProperty(sDetailTypePropertyName, out var detailTypeProperty))
{
var type = typeProperty.Deserialize <EventType>(options);
var detailType = detailTypeProperty.GetString() ?? string.Empty;
// Try to parse EventSet.
if (!EventSet.TryFromKey((type, detailType), out var set))
{
// Handle unknown `detail_type` events, but the `type` must be one of the four.
set = type switch
{
EventType.Meta => EventSet.NewMeta(detailType, typeof(EventMeta)),
EventType.Message => EventSet.NewMessage(detailType, typeof(EventMessage)),
EventType.Notice => EventSet.NewNotice(detailType, typeof(EventNotice)),
EventType.Request => EventSet.NewRequest(detailType, typeof(EventRequest)),
// `type` is unknown, not supported yet.
_ => throw new NotSupportedException(
$"{nameof(EventType)} {typeProperty.GetRawText()} is not supported by {nameof(JsonEventConverter)}.")
};
}
var post = doc.Deserialize(set !.ClassType, options);
if (post is Event ev)
{
return(ev);
}
}
throw new JsonException();
}