new response middleware functions to simplify middleware

internal/server/response/handler.go

@@ -8,6 +8,8 @@ type (
 	HandlerFunc = func(c *gin.Context) (Response, error)
 
 	Middleware = func(HandlerFunc) HandlerFunc
+
+	responseKey struct{}
 )
 
 func Handler(f HandlerFunc) gin.HandlerFunc {
@@ -15,8 +17,10 @@ func Handler(f HandlerFunc) gin.HandlerFunc {
 		res, err := f(c)
 		if err != nil {
 			c.Error(err)
-		} else {
-			Write(c, res)
+			c.Abort()
+		} else if res != nil {
+			c.Set(responseKey{}, res)
+			c.Abort()
 		}
 	}
 }