in case of error, parse it and include in the message only the errorMessage part

keycloak_client.go

@@ -2,6 +2,7 @@ package keycloak
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -165,6 +166,14 @@ func (c *Client) get(accessToken string, data interface{}, plugins ...plugin.Plu
 				Message:    string(resp.Bytes()),
 			}
 		case resp.StatusCode >= 400:
+			var response map[string]string
+			err := json.Unmarshal(resp.Bytes(), &response)
+			if message, ok := response["errorMessage"]; ok && err == nil {
+				return HTTPError{
+					HTTPStatus: resp.StatusCode,
+					Message:    message,
+				}
+			}
 			return HTTPError{
 				HTTPStatus: resp.StatusCode,
 				Message:    string(resp.Bytes()),
@@ -210,6 +219,14 @@ func (c *Client) post(accessToken string, data interface{}, plugins ...plugin.Pl
 				Message:    string(resp.Bytes()),
 			}
 		case resp.StatusCode >= 400:
+			var response map[string]string
+			err := json.Unmarshal(resp.Bytes(), &response)
+			if message, ok := response["errorMessage"]; ok && err == nil {
+				return "", HTTPError{
+					HTTPStatus: resp.StatusCode,
+					Message:    message,
+				}
+			}
 			return "", HTTPError{
 				HTTPStatus: resp.StatusCode,
 				Message:    string(resp.Bytes()),
@@ -257,6 +274,14 @@ func (c *Client) delete(accessToken string, plugins ...plugin.Plugin) error {
 				Message:    string(resp.Bytes()),
 			}
 		case resp.StatusCode >= 400:
+			var response map[string]string
+			err := json.Unmarshal(resp.Bytes(), &response)
+			if message, ok := response["errorMessage"]; ok && err == nil {
+				return HTTPError{
+					HTTPStatus: resp.StatusCode,
+					Message:    message,
+				}
+			}
 			return HTTPError{
 				HTTPStatus: resp.StatusCode,
 				Message:    string(resp.Bytes()),
@@ -297,6 +322,14 @@ func (c *Client) put(accessToken string, plugins ...plugin.Plugin) error {
 				Message:    string(resp.Bytes()),
 			}
 		case resp.StatusCode >= 400:
+			var response map[string]string
+			err := json.Unmarshal(resp.Bytes(), &response)
+			if message, ok := response["errorMessage"]; ok && err == nil {
+				return HTTPError{
+					HTTPStatus: resp.StatusCode,
+					Message:    message,
+				}
+			}
 			return HTTPError{
 				HTTPStatus: resp.StatusCode,
 				Message:    string(resp.Bytes()),