added more general response handler

internal/utils/response_handler.go

@@ -0,0 +1,35 @@
+package utils
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+type ResponseHandler struct {
+	Writer http.ResponseWriter
+}
+
+type Response struct {
+	Status  string `json:"status"`
+	Message string `json:"message"`
+}
+
+func NewResponseHandler(w http.ResponseWriter) *ResponseHandler {
+	return &ResponseHandler{Writer: w}
+}
+
+func (rh *ResponseHandler) RespondWithError(code int, message string) {
+	response := Response{
+		Status:  "error",
+		Message: message,
+	}
+	rh.Writer.Header().Set("Content-Type", "application/json")
+	rh.Writer.WriteHeader(code)
+	json.NewEncoder(rh.Writer).Encode(response)
+}
+
+func (rh *ResponseHandler) RespondWithJSON(code int, payload interface{}) {
+	rh.Writer.Header().Set("Content-Type", "application/json")
+	rh.Writer.WriteHeader(code)
+	json.NewEncoder(rh.Writer).Encode(payload)
+}