Issue #46 — Backend: Notification Creation Provider

[yusuftomilola]

Location: backend/src/notifications/providers/create-notification.provider.ts

Description

Other modules — bookings, payments, invoices — need a simple way to create in-app notifications for a member after key events. This provider exposes a single notify() method that any module can call to persist a notification record. It has no HTTP endpoint — it is a purely internal service.

Because this provider will be called from outside the NotificationsModule (e.g. from BookingsModule and PaymentsModule), it must be exported from NotificationsModule so it can be injected as a dependency in those modules.

Acceptance Criteria

• A CreateNotificationProvider class is created at backend/src/notifications/providers/create-notification.provider.ts
• The provider exposes a notify(userId: string, type: NotificationType, title: string, message: string): Promise<Notification> method
• The method creates and saves a Notification record and returns it
• All notification creation calls are fire-and-forget — callers should wrap calls with .catch(() => void 0) so a failed notification never breaks the calling flow
• CreateNotificationProvider is registered in NotificationsModule providers and exported so it can be injected in other modules
• NotificationsModule is imported into the following modules so CreateNotificationProvider is available:
  • backend/src/bookings/bookings.module.ts
  • backend/src/payments/payments.module.ts
• The provider is wired up with fire-and-forget calls at the following trigger points (alongside the existing email calls in those providers):
  • create-booking.provider.ts → BOOKING_CREATED — "Booking Created" / "Your booking for <workspace> has been received and is pending confirmation."
  • cancel-booking.provider.ts → BOOKING_CANCELLED — "Booking Cancelled" / "Your booking for <workspace> has been cancelled."
  • handle-webhook.provider.ts (charge.success) → PAYMENT_SUCCESS — "Payment Successful" / "Your payment of ₦<amount> for <workspace> was successful."
  • handle-webhook.provider.ts (charge.failed) → PAYMENT_FAILED — "Payment Failed" / "Your payment of ₦<amount> could not be processed. Please try again."
• npx tsc --noEmit passes with no errors