AI_nutrition_wellness_platform

# AI Nutrition & Wellness Platform (Nutrigo)

An end-to-end AI-powered nutrition and wellness platform that generates personalized weekly meal plans based on user health data, fitness activity, dietary preferences, and goals. The system combines rule-based intelligence, data-driven macros computation, and a modern full-stack architecture to deliver a scalable, real-world health-tech solution.

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## 🚀 Features

### 🔐 Authentication & User Management

- JWT-based authentication (access + refresh tokens)

- Secure login, signup, token refresh, and logout flows

- Persistent sessions with automatic token rotation

### 🧠 Smart Onboarding System

- Multi-step onboarding flow capturing:

- Age, gender, height, weight, body fat %

- Activity level, workout type & frequency

- Dietary preferences, allergies, cuisines

- Nutrition and fitness goals

- Progressive onboarding with backend state synchronization

### 🍽️ AI-Driven Meal Planning Engine

- Personalized weekly & daily meal plans

- Dynamic calorie & macro computation using:

- BMR (Mifflin–St Jeor)

- NEAT & exercise-based activity multipliers

- Goal-aware adjustments (weight loss / muscle gain / diabetes control)

- Intelligent meal splitting (1–5 meals/day with snack handling)

- Variety enforcement using repetition penalty tracking

- Cuisine, allergy, and diet-type filtering

### 📊 Nutrition-Aware Data Models

- Hierarchical planning:

- WeeklyPlan → DailyPlan → Meal → MealItem

- Auto-calculated calories and macros at every level

- Real-time macro recalculation on meal edits

### ⚛️ Modern Frontend Experience

- React + TypeScript SPA

- Context-driven onboarding state management

- Protected routes and dashboard views

- Axios interceptors for auth handling

- Clean, scalable component architecture

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## 🧩 Tech Stack

### Backend

- Django

- Django REST Framework

- JWT Authentication

- SQLite (JSONField-based food filtering)

- Rule-based recommendation engine

### Frontend

- React

- TypeScript

- React Router

- Axios

- Context API for global onboarding state

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## 🗃️ Core Data Models

- UserDetails – Health, lifestyle, and onboarding state

- Food – Nutritional data, regions, allergens, categories

- WeeklyPlan – Target macros & weekly structure

- DailyPlan – Per-day calorie/macro breakdown

- Meal – Meal-level macro aggregation

- MealItem – Food quantity mapping

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## ⚙️ Setup Instructions

### Backend

```bash

git clone https://github.com/Jyotirya/AI_nutrition_wellness_platform.git

cd backend

python -m venv venv

source venv/bin/activate

pip install -r requirements.txt

python manage.py migrate

python manage.py runserver