Andris Enins
91cd18aec6
Backend (Spring Boot 3.2 / Java 21 / PostgreSQL): - JWT auth with BCrypt password hashing - User profile + Mifflin-St Jeor BMR calculator - Food search + barcode via OpenFoodFacts API with local cache - Meal CRUD with user data isolation and ownership checks - AI photo analysis (OpenAI Vision) with confidence intervals - AI correction feedback loop for personalisation - Flyway DB migrations + RFC-7807 error responses Mobile (React Native / TypeScript): - Full navigation stack (Auth → Tabs → Home stack) - Design tokens (WCAG 2.2 AA colours, 8px grid, 48px touch targets) - 10 screens: Login, Register, Home, Search, Camera, AI Result, Edit Meal, Daily Details, History, Profile - Confidence-aware calorie display (kcal ± range) - Repeat last meal shortcut + macro tracking Docs: - docs/PLAN-AND-REQUIREMENTS.md - docs/traceability.csv (35 requirements, all Implemented)
Calorie Counter
AI-powered calorie tracking app — Spring Boot backend + React Native mobile.
Architecture
Mobile (React Native + TypeScript)
│ REST API (JWT)
Backend (Spring Boot 3.2 / Java 21)
│
┌─────────────────────────────────┐
│ PostgreSQL Flyway │
│ OpenFoodFacts API (food DB) │
│ OpenAI Vision API (AI meals) │
└─────────────────────────────────┘
Features
- Manual food search via OpenFoodFacts
- Barcode scan → auto-fill nutrition
- Photo meal logging with AI detection (OpenAI Vision)
- Confidence-aware calories:
500 kcal ± 80 kcal (85% confidence) - Daily calorie dashboard + macro tracking
- BMR-based personalised calorie targets (Mifflin-St Jeor)
- AI correction feedback loop → improves suggestions over time
- Repeat last meal one-tap shortcut
Structure
backend/ Spring Boot REST API
mobile/ React Native app
docs/ Requirements, traceability matrix
idea/ Original product research & wireframes
Getting Started
Backend
cd backend
# Required environment variables
export DB_URL=jdbc:postgresql://localhost:5432/caloriecounter
export DB_USERNAME=caloriecounter
export DB_PASSWORD=<your-db-password>
export JWT_SECRET=<256-bit-secret>
export OPENAI_API_KEY=<your-openai-key>
mvn spring-boot:run
Mobile
cd mobile
npm install
npx react-native run-ios # or run-android
Requirements & Traceability
See docs/PLAN-AND-REQUIREMENTS.md and docs/traceability.csv.
35 requirements tracked across 3 phases — all implemented.
Security
- Passwords: BCrypt cost 12
- JWT: HS256, 1hr expiry, per-request user existence check
- All secrets via environment variables — nothing hardcoded
- Input validation on all endpoints (Jakarta Validation)
- User data isolation enforced at service layer