notifications: add invokeLast ipc to run the newest notification's default action (#3734)

* notifications: add invokeLast ipc to run the newest notification's default action

* notifications: drop the invokeLast test file

quickshell/Modals/NotificationModal.qml

@@ -190,6 +190,12 @@ DModal {
             return "NOTIFICATION_DISMISS_SUCCESS";
         }
 
+        function invokeLast(): string {
+            if (!NotificationService.invokeLastNotification())
+                return "NOTIFICATION_INVOKE_NO_ACTION";
+            return "NOTIFICATION_INVOKE_SUCCESS";
+        }
+
         target: "notifications"
     }
 

quickshell/Services/NotificationService.qml

@@ -1049,6 +1049,17 @@ Singleton {
             dismissNotification(w);
     }
 
+    function invokeLastNotification() {
+        const w = notifications[notifications.length - 1];
+        const actions = w?.actions || [];
+        const action = actions.find(a => a.identifier === "default") || actions[0];
+        if (!action?.invoke)
+            return false;
+        action.invoke();
+        dismissNotification(w);
+        return true;
+    }
+
     function dismissAllPopups() {
         for (const w of visibleNotifications) {
             if (w) {