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AI Calendar Assistant - Project Plan

MVP Version (v0.1) - Text-only Telegram Bot

Goal: Simple text command processing without database, images, or complex features

Features:

  • ✅ Telegram bot that responds to text commands
  • ✅ Parse natural language calendar commands like:
    • "create event for 7pm called Tennis"
    • "add meeting tomorrow at 3pm with John"
    • "schedule lunch at 12:30pm"
  • ✅ Basic LLM integration (OpenAI/Anthropic) to parse text
  • ✅ Google Calendar integration to create events
  • ✅ Simple command validation and error handling
  • ✅ In-memory storage (no database)
  • ✅ Basic timezone handling (Asia/Jerusalem)

Tech Stack (MVP):

  • NestJS + TypeScript
  • Telegram Bot API
  • OpenAI/Anthropic for text parsing
  • Google Calendar API
  • Simple file-based config
  • No Redis, PostgreSQL, or S3

Commands:

  • /start - Connect Google Calendar
  • /help - Show available commands
  • Text messages: Natural language event creation

Version 1.0 - Basic Image Processing

Goal: Add image OCR and basic persistence

Additional Features:

  • ✅ Google Cloud Vision OCR for schedule images
  • ✅ PostgreSQL + Prisma for data persistence
  • ✅ Basic file storage (local filesystem)
  • ✅ User preferences storage
  • ✅ Event deduplication
  • ✅ Preview mode before committing

New Tech:

  • Google Cloud Vision API
  • PostgreSQL + Prisma
  • Local file storage

Version 2.0 - Advanced Features

Goal: Full feature set as described in prompt

Additional Features:

  • ✅ Redis + BullMQ for background processing
  • ✅ S3-compatible storage (Hetzner)
  • ✅ Voice message support (Whisper STT)
  • ✅ Location enrichment (Google Maps Places)
  • ✅ Advanced user rules and filtering
  • ✅ Undo functionality
  • ✅ Conflict detection and resolution
  • ✅ Advanced Telegram keyboards and UI

New Tech:

  • Redis + BullMQ
  • Whisper STT
  • Google Maps Places API
  • S3-compatible storage
  • Advanced Telegram Bot features

Version 3.0 - Production Ready

Goal: Production deployment and monitoring

Additional Features:

  • ✅ Docker containerization
  • ✅ Sentry logging and monitoring
  • ✅ API rate limiting and security
  • ✅ Comprehensive testing suite
  • ✅ CI/CD pipeline
  • ✅ Performance optimization
  • ✅ Multi-user support and scaling

New Tech:

  • Docker + Docker Compose
  • Sentry monitoring
  • nginx reverse proxy
  • CI/CD pipeline
  • Load testing tools

Current Sprint: MVP v0.1

Tasks:

  1. Set up basic NestJS project structure
  2. Create Telegram bot integration for text commands
  3. Implement basic LLM parsing for text prompts
  4. Add Google Calendar integration
  5. Create environment configuration
  6. Test with simple commands like "create event for 7pm called Tennis"

Success Criteria:

  • Bot responds to text messages
  • Can parse "create event for 7pm called Tennis"
  • Successfully creates event in Google Calendar
  • Handles basic errors gracefully
  • Works without database or external storage