return old status on change

src/main.rs

@@ -41,7 +41,7 @@ async fn api_list_disable(
     alias: &str,
     rules: &State<Arc<RwLock<Rules>>>,
 ) -> Result<Json<bool>, Status> {
-    Ok(Json(rules.write().await.set_status(alias, false)))
+    Ok(Json(!rules.write().await.set_status(alias, false)))
 }
 
 #[rocket::launch]

src/rules/list.rs

@@ -34,8 +34,10 @@ impl List {
         })
     }
     /// Change rule set status by list ID
-    pub fn set_status(&mut self, is_enabled: bool) {
+    pub fn set_status(&mut self, is_enabled: bool) -> bool {
+        let was_enabled = self.is_enabled;
         self.is_enabled = is_enabled;
+        was_enabled
     }
     /// Check if rule is exist in the items index
     pub fn contains(&self, value: &str) -> bool {