🥗 Nutrition Tracker Web

A comprehensive web-based nutrition tracking application built with Node.js, Express, and SQLite. Track your daily food intake, monitor nutritional values, and maintain a healthy lifestyle with ease.

✨ Features

• 📝 Food Logging: Log food items with quantity and unit measurements
• 📊 Daily Summaries: Get comprehensive daily nutrition summaries
• 🍎 Open Food Facts Integration: Automatic nutritional data lookup using the completely free Open Food Facts API (no API key required!)
• 💾 SQLite Database: Local database storage for reliability and performance
• 🌐 RESTful API: Clean, documented API endpoints
• 🔒 Environment Configuration: Secure environment variable management
• ☁️ Cloud Ready: Optimized for Render.com deployment
• 🆓 100% Free: No API keys or paid services required

🚀 Quick Start

Prerequisites

• Node.js (v14 or higher)
• npm or yarn
• No API key required! - Uses Open Food Facts free API

Installation

1. Clone the repository

   git clone https://github.com/myProjectsRavi/nutrition-tracker-web.git
   cd nutrition-tracker-web

2. Install dependencies

   npm install

3. Start the server (No additional setup needed!)

   # Development mode
   npm run dev
   
   # Production mode
   npm start

4. Test the API

   curl http://localhost:3000/health

📡 API Endpoints

Health Check

• GET /health - Check API status and Open Food Facts connectivity

Food Logging

• POST /api/food-log - Log a food item
• GET /api/food-log - Retrieve food log entries

Daily Summary

• GET /api/daily-summary - Get daily nutrition summary

Example Usage

Log a Food Item

curl -X POST http://localhost:3000/api/food-log \
  -H "Content-Type: application/json" \
  -d '{
    "food_name": "banana",
    "quantity": 120,
    "unit": "g"
  }'

Get Daily Summary

curl "http://localhost:3000/api/daily-summary"

🏗️ Project Structure

nutrition-tracker-web/
├── server.js              # Main server file with Open Food Facts integration
├── package.json           # Dependencies and scripts
├── .env.example          # Environment variables template (optional)
├── .gitignore            # Git ignore patterns
├── README.md             # Project documentation
└── nutrition.db          # SQLite database (created automatically)

🛠️ Technology Stack

• Backend: Node.js + Express.js
• Database: SQLite3
• External API: Open Food Facts (100% free, no registration required)
• Environment: dotenv (optional)
• CORS: cors middleware
• HTTP Client: axios

🌍 Environment Variables

All environment variables are optional. The app works out of the box with sensible defaults.

Variable	Description	Required	Default
PORT	Server port	No	3000
NODE_ENV	Environment mode	No	development
HOST	Server host	No	0.0.0.0
DATABASE_PATH	SQLite database path	No	./nutrition.db
CORS_ORIGIN	CORS allowed origins	No	*

📦 Deployment

Render.com Deployment

1. Connect your GitHub repository to Render.com
2. No environment variables required! The app works with defaults
3. Deploy using the following settings:
   • Build Command: npm install
   • Start Command: npm start

Local Production Build

# Set production environment (optional)
export NODE_ENV=production

# Start the server
npm start

🧪 Testing the API

You can test the API using curl, Postman, or any HTTP client:

# Health check
curl http://localhost:3000/health

# Log food
curl -X POST http://localhost:3000/api/food-log \
  -H "Content-Type: application/json" \
  -d '{"food_name":"apple", "quantity":150, "unit":"g"}'

# Get today's summary
curl http://localhost:3000/api/daily-summary

# Get food log entries
curl http://localhost:3000/api/food-log

🔧 Development

Scripts

• npm start - Start production server
• npm run dev - Start development server with nodemon
• npm test - Run tests (to be implemented)

Database Schema

food_logs table

CREATE TABLE food_logs (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER,
  food_name TEXT NOT NULL,
  quantity REAL NOT NULL,
  unit TEXT NOT NULL,
  calories REAL,
  protein REAL,
  carbs REAL,
  fat REAL,
  timestamp DATETIME DEFAULT CURRENT_TIMESTAMP,
  date DATE DEFAULT (DATE('now')),
  FOREIGN KEY(user_id) REFERENCES users(id)
);

🍎 About Open Food Facts

Open Food Facts is a free, open, collaborative database of food products from around the world. It provides:

• ✅ Completely Free: No API keys, registration, or rate limits
• ✅ Comprehensive Data: Millions of food products worldwide
• ✅ Real Nutrition Data: Actual nutrition facts from product labels
• ✅ Community Driven: Crowdsourced and verified by users
• ✅ No Dependencies: Works without any external accounts

🚨 API Migration Notice

Updated from USDA API: This application previously used the USDA FoodData Central API, which required an API key and had rate limits. We've migrated to Open Food Facts API for the following benefits:

• 🆓 No API key required
• 🚫 No rate limits
• 🌍 Global food database (not just US foods)
• ⚡ Faster setup (no registration needed)
• 📈 Better reliability

🤝 Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.

🌟 Acknowledgments

• Open Food Facts for providing free, comprehensive nutrition data
• Express.js for the web framework
• SQLite for the database
• Render.com for hosting recommendations

📞 Support

If you have any questions or run into issues, please:

1. Check the existing issues on GitHub
2. Create a new issue with detailed information
3. Join our community discussions

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Built with ❤️ by myProjectsRavi

Now with 100% free nutrition data - no API keys required!