Implementation Status

This document provides a detailed overview of the current implementation status of the Push Notification Service, helping you understand which features are available now and which are planned for future releases.

Core Components

Component	Status	Notes
API Server	✅ Implemented	Express server with routes for users, devices, and notifications
Database	✅ Implemented	PostgreSQL with basic schema
WebSocket Server	✅ Implemented	Socket.IO integration for real-time notifications
Message Queue	✅ Implemented	RabbitMQ integration for notification processing
Redis	⚠️ Partial	Basic integration, not fully utilized for features beyond presence
Notification Workers	⚠️ Partial	Immediate notification worker implemented; scheduled notifications partially implemented
Monitoring	⚠️ Partial	Prometheus metrics defined but dashboard not fully implemented
Logging	⚠️ Partial	Winston logger implemented but no ELK stack integration
Docker	✅ Implemented	Docker and Docker Compose for development

API Endpoints

User Management

Endpoint	Method	Status	Notes
/api/users	POST	✅ Implemented	Create a new user
/api/users	GET	✅ Implemented	Get all users
/api/users/:id	GET	✅ Implemented	Get a specific user
/api/users/:id	PUT	🔄 Planned	Update a user
/api/users/:id	DELETE	🔄 Planned	Delete a user

Device Management

Endpoint	Method	Status	Notes
/api/users/:userId/devices	POST	✅ Implemented	Register a device for a user
/api/users/:userId/devices	GET	✅ Implemented	Get all devices for a user
/api/users/:userId/devices/:deviceId	GET	🔄 Planned	Get a specific device
/api/users/:userId/devices/:deviceId	PUT	🔄 Planned	Update a device
/api/users/:userId/devices/:deviceId	DELETE	✅ Implemented	Unregister a device

Notification Management

Endpoint	Method	Status	Notes
/api/notifications	POST	✅ Implemented	Send an immediate notification
/api/notifications/user/:userId	GET	✅ Implemented	Get notifications for a user
/api/notifications/schedule	POST	⚠️ Partial	Schedule a notification for future delivery (worker partially implemented)
/api/notifications/broadcast	POST	🔄 Planned	Send to all users
/api/notifications/:id	GET	🔄 Planned	Get a specific notification
/api/notifications/:id	DELETE	🔄 Planned	Cancel a scheduled notification

User Preferences

Endpoint	Method	Status	Notes
/api/users/:userId/preferences	POST	🔄 Planned	Set notification preferences
/api/users/:userId/preferences	GET	🔄 Planned	Get notification preferences

Database Schema

Table	Status	Notes
users	✅ Implemented	Basic user information
devices	✅ Implemented	User device registration
notifications	✅ Implemented	Basic notification data
user_preferences	⚠️ Schema Only	Table defined but not used in application code
sent_notifications	⚠️ Schema Only	Table defined but not used in application code
failed_notifications	⚠️ Schema Only	Table defined but not used in application code
notification_logs	⚠️ Schema Only	Table defined but not used in application code
email_logs	⚠️ Schema Only	Table defined but not used in application code
sms_logs	⚠️ Schema Only	Table defined but not used in application code
push_notification_logs	⚠️ Schema Only	Table defined but not used in application code
webhook_logs	⚠️ Schema Only	Table defined but not used in application code

Model Implementation

Model	Status	Notes
User	⚠️ Partial	Implemented but missing name and phone fields from database schema
Device	✅ Implemented	User device model
Notification	✅ Implemented	Basic notification model
UserPreferences	🔄 Planned	Schema exists but model not implemented
SentNotification	🔄 Planned	Schema exists but model not implemented
NotificationLog	🔄 Planned	Schema exists but model not implemented

Features

Feature	Status	Notes
User Management	⚠️ Partial	Basic CRUD operations (except update/delete)
Device Registration	✅ Implemented	Register and unregister devices
Push Notifications	⚠️ Partial	Basic immediate notification via WebSocket implemented
WebSocket Delivery	✅ Implemented	Real-time notification delivery
Message Queuing	✅ Implemented	RabbitMQ integration
Scheduled Notifications	⚠️ Partial	Worker exists but API endpoint not implemented
Multi-channel Delivery	🔄 Planned	Currently WebSocket only, email/SMS planned
Notification Templates	🔄 Planned	For future implementation
User Preferences	🔄 Planned	Schema exists but not implemented
Delivery Tracking	⚠️ Partial	Basic status tracking only, detailed tracking planned
Webhook Integration	🔄 Planned	Schema exists but not implemented

Monitoring & Logging

Feature	Status	Notes
Prometheus Metrics	⚠️ Partial	Metrics defined but dashboard not fully implemented
Winston Logging	✅ Implemented	Basic logging to console
ELK Stack	🔄 Planned	Configuration exists but not fully integrated
Grafana Dashboards	🔄 Planned	For future implementation

Development Tools

Tool	Status	Notes
Docker	✅ Implemented	Docker and Docker Compose setup
Database Seeder	✅ Implemented	For generating test data
Test Suite	🔄 Planned	For future implementation
CI/CD	🔄 Planned	For future implementation

Legend

• ✅ Implemented - Feature is fully implemented and available
• ⚠️ Partial - Feature is partially implemented with limited functionality
• 🔄 Planned - Feature is planned for future implementation

Roadmap

Short-term (Next Release)

1. Fix User model to match database schema (add name and phone fields)
2. Implement scheduled notifications API endpoint
3. Create models for user preferences and notification logs
4. Improve Redis integration for better caching and rate limiting

Mid-term

1. Implement multi-channel delivery (email, SMS)
2. Add user preferences functionality
3. Implement notification templates
4. Complete ELK stack integration

Long-term

1. Implement webhook integration
2. Add advanced analytics
3. Implement notification batching
4. Add A/B testing capabilities