feat: count failed attempts

app/services/notification_service.ts

@@ -5,6 +5,8 @@ import { DateTime } from 'luxon'
 import { UAParser } from 'ua-parser-js'
 import webpush, { PushSubscription } from 'web-push'
 
+const MAX_FAILED_ATTEMPTS = 5
+
 export const EVENTS = {
   SYSTEM: 1 << 0,
 
@@ -55,12 +57,28 @@ export class NotificationService {
     const subscriptions = await Subscription.query()
       .where('enabled', true)
       .where('userId', colle.studentId)
-      // TODO: Check if working??
       .whereRaw(`(events & ${EVENTS[notificationId]}) > 0`)
 
     for (const subscription of subscriptions) {
+      try {
         await this.pushNotification(subscription.data, payload)
-      // TODO: Count failed attempts and disable subscription if too many failures
+        // Reset failed attempts on successful notification
+        if (subscription.failedAttempts) {
+          subscription.failedAttempts = 0
+          await subscription.save()
+        }
+      } catch (err) {
+        console.error(
+          `Error sending notification for ${notificationId} to user ${colle.studentId}:`,
+          err
+        )
+        // Increment failed attempts and disable subscription if too many failures
+        subscription.failedAttempts = (subscription.failedAttempts || 0) + 1
+        if (subscription.failedAttempts >= MAX_FAILED_ATTEMPTS) {
+          subscription.enabled = false
+        }
+        await subscription.save()
+      }
     }
   }