feat: add global error handler middleware

internal/infrastructure/controller/user_controller.go

@@ -112,13 +112,7 @@ func (u *userController) Create(c *gin.Context) {
 // @Router /users/me [post]
 // @Security JWT
 func (u *userController) Me(c *gin.Context) {
-	id, _ := c.Get("user")
-
-	user, err := u.UserService.FindById(id.(int))
-	if err != nil {
-		common.RaiseHttpError(c, http.StatusNotFound, err)
-		return
-	}
+	user, _ := c.Get("user")
 
 	c.JSON(http.StatusOK, user)
 }

internal/infrastructure/middleware/global_error_handler.go

@@ -0,0 +1,29 @@
+package middleware
+
+import (
+	"errors"
+	"net/http"
+
+	"gin-starter/pkg/common"
+
+	"github.com/gin-gonic/gin"
+)
+
+func GlobalErrorHandler() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Next()
+
+		for _, err := range c.Errors {
+			switch e := err.Err.(type) {
+			case *common.HttpError:
+				c.AbortWithStatusJSON(e.StatusCode, e)
+			default:
+				common.RaiseHttpError(
+					c,
+					http.StatusInternalServerError,
+					errors.New("Service Unavailable"),
+				)
+			}
+		}
+	}
+}

internal/infrastructure/server/server.go

@@ -29,6 +29,7 @@ func registerRoutes() *gin.Engine {
 
 	router.Use(gin.Logger())
 	router.Use(gin.Recovery())
+	router.Use(middleware.GlobalErrorHandler())
 
 	corsConfig := cors.DefaultConfig()
 	corsConfig.AllowAllOrigins = true

pkg/common/error.go

@@ -1,18 +1,20 @@
 package common
 
-import "github.com/gin-gonic/gin"
+import (
+	"github.com/gin-gonic/gin"
+)
 
-func RaiseHttpError(ctx *gin.Context, status int, err error) {
-	ctx.AbortWithStatusJSON(status, HttpError{
-		Code:    status,
-		Message: err.Error(),
+func RaiseHttpError(ctx *gin.Context, statusCode int, err error) {
+	ctx.AbortWithStatusJSON(statusCode, HttpError{
+		StatusCode: statusCode,
+		Message:    err.Error(),
 	})
 }
 
 // Exporting this in order to use it in API docs
 type HttpError struct {
-	Code    int    `json:"statusCode" example:"400"`
-	Message string `json:"message" example:"bad request"`
+	StatusCode int    `json:"statusCode" example:"400"`
+	Message    string `json:"message" example:"Bad Request"`
 }
 
 func (e *HttpError) Error() string {