json, gob 둘다 지원

server.go

@@ -430,17 +430,44 @@ func ReadStringFormValue(r url.Values, key string) (string, bool) {
 	return strval, len(strval) > 0
 }
 
-func DecodeGob[T any](r io.Reader, out *T) error {
-	dec := gob.NewDecoder(r)
-	return dec.Decode(out)
+type encoder interface {
+	Encode(any) error
 }
 
-func ReadJsonDocumentFromBody[T any](r io.Reader, out *T) error {
-	bt, err := io.ReadAll(r)
-	if err != nil {
-		return err
+type nilEncoder struct{}
+
+func (ne *nilEncoder) Encode(any) error { return nil }
+
+type decoder interface {
+	Decode(any) error
+}
+
+type nilDecoder struct{}
+
+func (nd *nilDecoder) Decode(any) error { return nil }
+
+func MakeDecoder(r *http.Request) decoder {
+	ct := r.Header.Get("Content-Type")
+	if ct == "application/gob" {
+		return gob.NewDecoder(r.Body)
+	} else if ct == "application/json" {
+		return json.NewDecoder(r.Body)
 	}
-	return json.Unmarshal(bt, out)
+
+	logger.Error("Content-Type is not supported :", ct)
+	return &nilDecoder{}
+}
+
+func MakeEncoder(w http.ResponseWriter, r *http.Request) encoder {
+	ct := r.Header.Get("Content-Type")
+	if ct == "application/gob" {
+		return gob.NewEncoder(w)
+	} else if ct == "application/json" {
+		return json.NewEncoder(w)
+	}
+
+	logger.Error("Content-Type is not supported :", ct)
+	return &nilEncoder{}
 }
 
 func DotStringToTimestamp(tv string) primitive.Timestamp {