stub image token refresh

message/images.go

@@ -12,8 +12,21 @@ import (
 	"time"
 )
 
+var ErrBadAuth = errors.New("auth has failed")
+
 func UploadImage(b []byte) (string, error) {
-	return uploadImage(b)
+	path, err := uploadImage(b)
+	if err == ErrBadAuth {
+		if err := refreshToken(); err != nil {
+			return "", err
+		}
+		path, err = uploadImage(b)
+	}
+	return path, err
+}
+
+func refreshToken() error {
+	return errors.New("not impl")
 }
 
 func uploadImage(b []byte) (string, error) {
@@ -49,7 +62,11 @@ func uploadImage(b []byte) (string, error) {
 	}
 	defer response.Body.Close()
 	b, _ = ioutil.ReadAll(response.Body)
-	if response.StatusCode != http.StatusOK {
+	switch response.StatusCode {
+	case http.StatusOK:
+	case 401, 403:
+		return "", ErrBadAuth
+	default:
 		return "", fmt.Errorf("error uploading image: (%d) %s", response.StatusCode, b)
 	}
 	var result struct {