From c1645b2d4b1e5de85ea332609b105b29476e27c5 Mon Sep 17 00:00:00 2001
From: Lectom C Han <hchy0730@gmail.com>
Date: Fri, 13 Feb 2026 10:23:45 +0900
Subject: [PATCH] =?UTF-8?q?i18n=20=EA=B4=91=EC=97=AD=20=EC=A0=81=EC=9A=A9?=
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---
 backend/cmd/server/main.go                  |  9 ++---
 backend/internal/response/error_response.go | 44 +++++++++++++++++++++
 2 files changed, 47 insertions(+), 6 deletions(-)
 create mode 100644 backend/internal/response/error_response.go

diff --git a/backend/cmd/server/main.go b/backend/cmd/server/main.go
index 301cab51..ee0ad215 100644
--- a/backend/cmd/server/main.go
+++ b/backend/cmd/server/main.go
@@ -7,6 +7,7 @@ import (
 	"baron-sso-backend/internal/idp"
 	"baron-sso-backend/internal/logger"
 	"baron-sso-backend/internal/middleware"
+	"baron-sso-backend/internal/response"
 	"baron-sso-backend/internal/repository"
 	"baron-sso-backend/internal/service"
 	"baron-sso-backend/internal/validator"
@@ -292,16 +293,12 @@ func main() {
 						"method", c.Method(),
 					)
 					// Return masked message
-					return c.Status(code).JSON(fiber.Map{
-						"error": "Internal Server Error",
-					})
+					return response.Error(c, code, response.StatusCode(code), "Internal Server Error")
 				}
 			}
 
 			// For development or non-500 errors, return the actual error message
-			return c.Status(code).JSON(fiber.Map{
-				"error": err.Error(),
-			})
+			return response.Error(c, code, response.StatusCode(code), err.Error())
 		},
 	})
 
diff --git a/backend/internal/response/error_response.go b/backend/internal/response/error_response.go
new file mode 100644
index 00000000..6ebb826f
--- /dev/null
+++ b/backend/internal/response/error_response.go
@@ -0,0 +1,44 @@
+package response
+
+import "github.com/gofiber/fiber/v2"
+
+type ErrorResponse struct {
+	Error   string      `json:"error"`
+	Code    string      `json:"code,omitempty"`
+	Details interface{} `json:"details,omitempty"`
+}
+
+func Error(c *fiber.Ctx, status int, code, message string) error {
+	return ErrorWithDetails(c, status, code, message, nil)
+}
+
+func ErrorWithDetails(c *fiber.Ctx, status int, code, message string, details interface{}) error {
+	resp := ErrorResponse{
+		Error:   message,
+		Code:    code,
+		Details: details,
+	}
+
+	return c.Status(status).JSON(resp)
+}
+
+func StatusCode(status int) string {
+	switch status {
+	case fiber.StatusBadRequest:
+		return "bad_request"
+	case fiber.StatusUnauthorized:
+		return "invalid_session"
+	case fiber.StatusForbidden:
+		return "forbidden"
+	case fiber.StatusNotFound:
+		return "not_found"
+	case fiber.StatusConflict:
+		return "conflict"
+	case fiber.StatusTooManyRequests:
+		return "rate_limited"
+	case fiber.StatusServiceUnavailable:
+		return "service_unavailable"
+	default:
+		return "internal_error"
+	}
+}