router improvements

router.go

@@ -29,12 +29,25 @@ func (r *Router) Use(mw ...Middleware) {
 	}
 }
 
-func (r *Router) Group(fn func(r *Router)) {
+func (r *Router) Group(basePath string, fn func(r *Router)) {
 	sub := &Router{
 		ServeMux:   r.ServeMux,
 		routeChain: slices.Clone(r.routeChain),
 		isSub:      true,
 	}
+
+	// Añadir middleware para manejar el basePath
+	sub.Use(func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+			if !strings.HasPrefix(req.URL.Path, basePath) {
+				http.NotFound(w, req)
+				return
+			}
+			req.URL.Path = strings.TrimPrefix(req.URL.Path, basePath)
+			next.ServeHTTP(w, req)
+		})
+	})
+
 	fn(sub)
 }