adds reactivity when undoing an event

src/api.rs

@@ -198,9 +198,14 @@ pub fn execute(
             None
         }
         ApiActions::UndoLastAction(id) => {
-            match db::undo_last_action(conn, id) {
-                Ok(ev) => response.notify(format!("'{}' annulé(e)", ev.name())),
-                Err(e) => response.push_error(format!("Erreur : {:?}", e)),
+            if let Ok(event) = db::models::history::get_last_of_player(conn, id) {
+                let name = String::from(event.name());
+                for undone in event.undo(conn)?.into_inner().into_iter() {
+                    response.push_update(undone);
+                }
+                response.notify(format!("'{}' annulé(e)", name));
+            } else {
+                response.push_error("Aucune action trouvée")
             };
             None
         }