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🔔 FCM Push Notification Setup

This document outlines how to set up and verify Firebase Cloud Messaging (FCM) for Paycif.

1. Firebase Configuration

The app is connected to the project my-paysify-project.

Config Files Locations:

  • Android: frontend/android/app/google-services.json
  • iOS: frontend/ios/Runner/GoogleService-Info.plist
  • Flutter: frontend/lib/firebase_options.dart (Contains platform-specific keys)

2. Integration Workflow

  1. Device Registration: Upon app launch, the PushNotificationService requests permission and retrieves the FCM Token.
  2. Token Sync: The token is automatically sent to the Supabase profiles table in the fcm_token column.
  3. Backend Trigger: When a transaction occurs, the Go NotificationService checks the user's preferences:
    • notification_transaction (Toggle from UI)
    • fcm_token (Presence check)
  4. Push Dispatch: If authorized, a "Silent Push" is sent via Firebase Admin SDK.

3. UI Settings

User can manage their preferences in: Profile > Notifications

4. Verification Steps

  • Check Supabase logs for FCM Token updated.
  • Verify google-services.json is present before building for Android.
  • (iOS) Ensure "Push Notifications" capability is added in Xcode.