feat: Waku v2 bridge

Issue #12610

vendor/github.com/status-im/status-go/protocol/v1/encoder.go

@@ -0,0 +1,48 @@
+package protocol
+
+import (
+	"errors"
+	"io"
+	"reflect"
+
+	"github.com/russolsen/transit"
+)
+
+var (
+	pairMessageType = reflect.TypeOf(PairMessage{})
+
+	defaultMessageValueEncoder = &messageValueEncoder{}
+)
+
+// NewMessageEncoder returns a new Transit encoder
+// that can encode Message values.
+// More about Transit: https://github.com/cognitect/transit-format
+func NewMessageEncoder(w io.Writer) *transit.Encoder {
+	encoder := transit.NewEncoder(w, false)
+	encoder.AddHandler(pairMessageType, defaultMessageValueEncoder)
+	return encoder
+}
+
+type messageValueEncoder struct{}
+
+func (messageValueEncoder) IsStringable(reflect.Value) bool {
+	return false
+}
+
+func (messageValueEncoder) Encode(e transit.Encoder, value reflect.Value, asString bool) error {
+	switch message := value.Interface().(type) {
+	case PairMessage:
+		taggedValue := transit.TaggedValue{
+			Tag: pairMessageTag,
+			Value: []interface{}{
+				message.InstallationID,
+				message.DeviceType,
+				message.Name,
+				message.FCMToken,
+			},
+		}
+		return e.EncodeInterface(taggedValue, false)
+	}
+
+	return errors.New("unknown message type to encode")
+}