add owner handle

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

internal/handler/response.go

@@ -3,6 +3,8 @@ package handler
 import (
 	"encoding/json"
 	"net/http"
+
+	"git.g3e.fr/H6N/account/internal/auth"
 )
 
 func writeJSON(w http.ResponseWriter, status int, v any) {
@@ -14,3 +16,13 @@ func writeJSON(w http.ResponseWriter, status int, v any) {
 func writeError(w http.ResponseWriter, status int, msg string) {
 	writeJSON(w, status, map[string]string{"error": msg})
 }
+
+// requireOwner extrait l'owner du contexte ou écrit 401 et retourne false.
+func requireOwner(w http.ResponseWriter, r *http.Request) (int32, bool) {
+	id, ok := auth.OwnerFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusUnauthorized, "missing owner")
+		return 0, false
+	}
+	return id, true
+}