🥗 EatRight AI Nutrition Assistant

A modern, AI-powered nutrition assistant that helps users analyze their meals, track calories, and get personalized nutrition advice using Google's Gemini AI.

✨ Features

• 📸 Instant Food Analysis: Upload or snap a photo of your meal.
• 🤖 AI Nutritionist: Powered by Gemini 2.0 Flash for accurate food identification and advice.
• 📊 Smart Tracking: Automatically estimates calories, protein, carbs, and fats.
• 🔐 Secure Authentication: Google OAuth 2.0 integration.
• 📅 Meal History: Keep track of your daily nutrition journey.
• 📈 Progress Insights: Weekly charts and stats to monitor your goals.
• 📱 Mobile Ready: Optimized for both desktop and mobile devices.

🛠️ Tech Stack

• Frontend: React, Vite, Recharts, Framer Motion
• Backend: FastAPI, Python, MongoDB (Motor)
• AI: Google Gemini API (Visual Analysis)
• Storage: Google Cloud Storage (Images)
• Auth: Google OAuth + JWT

🚀 Getting Started

Prerequisites

• Node.js & npm
• Python 3.9+
• MongoDB Atlas Account
• Google Cloud Project (for GCS & OAuth)
• Gemini API Key

1. Backend Setup

cd backend
python -m venv venv
# Windows
.\venv\Scripts\activate
# Mac/Linux
source venv/bin/activate

pip install -r requirements.txt

Create a .env file in the backend directory:

GEMINI_API_KEY=your_gemini_key
MONGODB_URI=your_mongodb_connection_string
GCS_BUCKET_NAME=your_bucket_name
GOOGLE_APPLICATION_CREDENTIALS=path/to/gcs_credentials.json

# Authorization
GOOGLE_CLIENT_ID=your_oauth_client_id
GOOGLE_CLIENT_SECRET=your_oauth_client_secret
JWT_SECRET_KEY=generate_a_random_secret_string
FRONTEND_URL=http://localhost:5173

Start the server:

uvicorn main:app --reload

2. Frontend Setup

cd frontend
npm install

Create a .env file in the frontend directory:

VITE_API_URL=http://localhost:8000
VITE_GOOGLE_CLIENT_ID=your_oauth_client_id

Start the development server:

npm run dev

🔑 Key Configuration Guide

How to get Google OAuth Credentials

1. Go to Google Cloud Console.
2. Create a new project or select an existing one.
3. Navigate to APIs & Services > Credentials.
4. Click Create Credentials > OAuth client ID.
5. Application type: Web application.
6. Add Authorized Redirect URI: http://localhost:8000/auth/google/callback
7. Copy the Client ID and Client Secret to your .env files.

How to generate JWT Secret

You can generate a secure random key using python:

import secrets
print(secrets.token_urlsafe(32))

📱 Mobile Usage

To use the camera feature on mobile:

1. Access the app via your network IP (e.g., http://192.168.1.x:5173).
2. Ensure your backend allows CORS from this IP.
3. The upload button will automatically prompt for Camera or Gallery.

📄 License

MIT License - Made with ❤️ by EatRight Team