TODO.md

QryptChat Development TODO

✅ Completed Features

Core Infrastructure

• Project Setup: SvelteKit with Vite, PWA configuration
• Environment Configuration: PORT variable, build optimization
• Asset Management: Favicon, fonts (Inter Variable), PWA icons
• Theme System: Dark/light mode with CSS custom properties
• Internationalization: 6-language support (EN, ES, FR, DE, AR, ZH) with RTL
• Responsive Design: Mobile-first approach with modern CSS

Authentication System

• Database Schema: Complete Supabase migration with users, conversations, messages
• Server-Side APIs: SMS verification endpoints (/api/auth/send-sms, /api/auth/verify-sms)
• Twilio Integration: SMS verification with rate limiting and security
• Authentication Store: Reactive user state management
• Auth UI: Multi-step phone verification flow
• User Management: Profile creation, session persistence

User Interface

• Navigation: Authentication-aware navbar with user info
• Homepage: Modern landing page with feature showcase
• Chat Interface: Basic chat layout with sidebar and welcome screen
• Responsive Components: Mobile and desktop optimized

🚧 In Progress

Environment & Configuration

• Environment Variables: Add Twilio credentials to .env
• Testing: End-to-end authentication flow testing

📋 Upcoming Features

Real-Time Messaging

• WebSocket Integration: Real-time message delivery
• Message API Endpoints: Send, receive, edit, delete messages
• Typing Indicators: Real-time typing status
• Read Receipts: Message delivery and read status
• Presence System: Online/offline user status

Cross-Device Synchronization

• Real-Time Sync: Supabase real-time subscriptions for cross-device sync
• Session Management: Multi-device session handling
• Push Notifications: Cross-device message notifications
• Offline Support: Message queuing and sync when back online
• Device Management: View and manage logged-in devices

Enhanced Chat Features

• Direct Messaging: One-on-one conversations
• Group Chats: Multi-user conversations
• Message Search: Full-text search across conversations
• File Sharing: Image and document sharing
• Message Reactions: Emoji reactions to messages
• Message Threading: Reply to specific messages

Security & Encryption

• End-to-End Encryption: Implement quantum-resistant encryption
• Key Management: Secure key exchange and storage
• Message Verification: Cryptographic message integrity
• Forward Secrecy: Automatic key rotation

User Experience

• Settings Page: User preferences and account management
• Profile Management: Avatar upload, bio, status
• Contact System: Add/remove contacts
• Notification Settings: Granular notification controls
• Export/Import: Chat history backup and restore

Performance & Scalability

• Message Pagination: Efficient message loading
• Image Optimization: Automatic image compression
• Caching Strategy: Optimize API response caching
• Database Indexing: Query performance optimization

Testing & Quality

• Unit Tests: Component and utility function tests
• Integration Tests: API endpoint testing
• E2E Tests: Complete user flow testing
• Performance Testing: Load testing and optimization
• Security Audit: Penetration testing and vulnerability assessment

Deployment & DevOps

• CI/CD Pipeline: Automated testing and deployment
• Docker Configuration: Containerized deployment
• Monitoring: Application performance monitoring
• Logging: Structured logging and error tracking
• Backup Strategy: Database backup and recovery

🎯 Priority Order

Phase 1: Core Messaging (Current)

1. Environment variables setup
2. WebSocket real-time messaging
3. Basic message API endpoints
4. Cross-device synchronization

Phase 2: Enhanced Features

1. Group chat functionality
2. File sharing capabilities
3. Message search and history
4. Push notifications

Phase 3: Security & Encryption

1. End-to-end encryption implementation
2. Key management system
3. Security audit and testing

Phase 4: Polish & Performance

1. Advanced UI/UX improvements
2. Performance optimization
3. Comprehensive testing
4. Production deployment

📝 Notes

• Architecture: Following KISS principle - simple, maintainable code
• Database: Using Supabase with Row Level Security (RLS)
• Real-time: Leveraging Supabase real-time subscriptions
• Testing: TDD approach with Vitest framework
• Deployment: Targeting modern web standards and PWA capabilities

🔧 Technical Debt

• Fix TypeScript type checking warnings in JavaScript files
• Optimize bundle size and loading performance
• Implement proper error boundaries
• Add comprehensive JSDoc documentation
• Set up automated code quality checks