fix(webpush): improve iOS push subscription endpoint cleanup

Signed-off-by: 0xsysr3ll <0xsysr3ll@pm.me>

src/components/UserProfile/UserSettings/UserNotificationSettings/UserNotificationsWebPush/index.tsx

@@ -109,11 +109,16 @@ const UserWebPushSettings = () => {
   // Deletes/disables corresponding push subscription from database
   const disablePushNotifications = async (endpoint?: string) => {
     try {
-      await unsubscribeToPushNotifications(user?.id, endpoint);
+      const unsubscribedEndpoint = await unsubscribeToPushNotifications(
+        user?.id,
+        endpoint
+      );
 
       // Delete from backend if endpoint is available
-      if (subEndpoint) {
-        await deletePushSubscriptionFromBackend(subEndpoint);
+      const endpointToDelete = unsubscribedEndpoint || subEndpoint || endpoint;
+
+      if (endpointToDelete) {
+        await deletePushSubscriptionFromBackend(endpointToDelete);
       }
 
       localStorage.setItem('pushNotificationsEnabled', 'false');

src/utils/pushSubscriptionHelpers.ts

@@ -56,7 +56,7 @@ export const verifyPushSubscription = async (
     );
 
     return expectedServerKey === currentServerKey && data.endpoint === endpoint;
-  } catch {
+  } catch (error) {
     return false;
   }
 };
@@ -74,11 +74,24 @@ export const verifyAndResubscribePushSubscription = async (
   if (currentSettings.enablePushRegistration) {
     try {
       // Unsubscribe from the backend to clear the existing push subscription (keys and endpoint)
-      await unsubscribeToPushNotifications(userId);
+      const oldEndpoint = await unsubscribeToPushNotifications(userId);
 
       // Subscribe again to generate a fresh push subscription with updated keys and endpoint
       await subscribeToPushNotifications(userId, currentSettings);
 
+      if (oldEndpoint && userId) {
+        try {
+          await axios.delete(
+            `/api/v1/user/${userId}/pushSubscription/${encodeURIComponent(
+              oldEndpoint
+            )}`
+          );
+        } catch (error) {
+          // Ignore errors when deleting old endpoint (it might not exist)
+          // This is expected when the endpoint was already cleaned up
+        }
+      }
+
       return true;
     } catch (error) {
       throw new Error(`[SW] Resubscribe failed: ${error.message}`);
@@ -136,24 +149,26 @@ export const subscribeToPushNotifications = async (
 export const unsubscribeToPushNotifications = async (
   userId: number | undefined,
   endpoint?: string
-) => {
+): Promise<string | null> => {
   if (!('serviceWorker' in navigator) || !userId) {
-    return;
+    return null;
   }
 
   try {
     const { subscription } = await getPushSubscription();
 
     if (!subscription) {
-      return false;
+      return null;
     }
 
     const { endpoint: currentEndpoint } = subscription.toJSON();
 
     if (!endpoint || endpoint === currentEndpoint) {
       await subscription.unsubscribe();
-      return true;
+      return currentEndpoint ?? null;
     }
+
+    return null;
   } catch (error) {
     throw new Error(
       `Issue unsubscribing to push notifications: ${error.message}`