TechZone - Electronics E-Commerce Platform

A production-grade electronics e-commerce platform featuring product comparison, a comprehensive specifications database, expert tech reviews, intelligent price alerts, and warranty management.

Project Goal

TechZone aims to be the definitive online destination for purchasing electronics, providing buyers with the tools they need to make informed decisions. By combining detailed product specifications, side-by-side comparisons, professional reviews, historical price tracking, and post-purchase warranty management, TechZone delivers an end-to-end electronics shopping experience that goes far beyond a simple storefront.

Key Features

Product Management

• Full CRUD operations for electronics products with rich metadata
• Hierarchical category system (e.g., Laptops > Gaming Laptops)
• Multi-image support with primary image selection
• Brand management with logo and description
• Detailed specification tables per product (CPU, RAM, storage, display, etc.)

Product Comparison

• Side-by-side comparison of up to 4 products
• Auto-aligned specification rows for easy visual scanning
• Save and share comparison lists
• Highlight specification differences across compared products

Specifications Database

• Structured specification schema per category
• Filterable and searchable specifications
• Specification-based product recommendations
• Category-specific specification templates

Tech Reviews

• Professional editorial reviews with detailed scoring (performance, value, design, etc.)
• User reviews with verified purchase badges
• Pros/cons lists and final verdict summaries
• Review helpfulness voting

Price Alerts

• Set target price notifications per product
• Full price history tracking with date-stamped entries
• Price trend visualization (line charts)
• Email and in-app notifications when prices drop

Warranty Management

• Register product warranties post-purchase
• Track warranty expiration dates
• Warranty claim submission and status tracking
• Automated expiry reminders via email

Order Management

• Shopping cart with persistent state
• Multi-step checkout flow
• Order history with status tracking
• Payment processing integration
• Invoice generation

Search and Discovery

• Full-text search powered by Elasticsearch
• Faceted filtering (brand, price range, specs)
• Category browsing with breadcrumbs
• Featured and trending product sections

Architecture

                    +------------------+
                    |   Nginx Reverse  |
                    |      Proxy       |
                    +--------+---------+
                             |
              +--------------+--------------+
              |                             |
     +--------v--------+         +---------v--------+
     |  React Frontend |         |  Flask Backend    |
     |  (Port 3000)    |         |  (Port 5000)      |
     +-----------------+         +---+----+----+-----+
                                     |    |    |
                          +----------+    |    +----------+
                          |               |               |
                 +--------v---+    +------v-----+   +-----v-------+
                 | PostgreSQL |    |    Redis    |   | Elasticsearch|
                 | (Port 5432)|    | (Port 6379)|   | (Port 9200)  |
                 +------------+    +------+-----+   +--------------+
                                         |
                                  +------v-----+
                                  |   Celery    |
                                  |   Workers   |
                                  +-------------+

Data Flow

1. Client requests hit Nginx, which routes to either the React SPA or the Flask API.
2. Flask API handles business logic, reads/writes PostgreSQL, caches hot data in Redis.
3. Elasticsearch powers full-text product search and faceted filtering.
4. Celery workers consume tasks from Redis (broker) for background jobs: price checking, email dispatch, warranty reminders.
5. React frontend communicates with the API via Axios, manages state with Redux Toolkit.

Tech Stack

Layer	Technology
Backend	Python 3.11, Flask, Flask-RESTful
Frontend	React 18, Redux Toolkit, React Router
Database	PostgreSQL 15
Cache / Broker	Redis 7
Search	Elasticsearch 8
Task Queue	Celery 5
Reverse Proxy	Nginx
Containerization	Docker, Docker Compose
ORM	SQLAlchemy + Alembic
Serialization	Marshmallow
Auth	JWT (Flask-JWT-Extended)
Charts	Recharts

Folder Structure

techzone/
|-- docker-compose.yml
|-- .env.example
|-- .gitignore
|-- README.md
|-- nginx/
|   +-- nginx.conf
|-- backend/
|   |-- requirements.txt
|   |-- run.py
|   |-- celery_worker.py
|   |-- migrations/
|   |   +-- env.py
|   +-- app/
|       |-- __init__.py
|       |-- config.py
|       |-- extensions.py
|       |-- models/
|       |   |-- __init__.py
|       |   |-- user.py
|       |   |-- product.py
|       |   |-- order.py
|       |   |-- review.py
|       |   |-- comparison.py
|       |   |-- price_alert.py
|       |   +-- warranty.py
|       |-- api/
|       |   |-- __init__.py
|       |   |-- auth.py
|       |   |-- products.py
|       |   |-- orders.py
|       |   |-- reviews.py
|       |   |-- comparisons.py
|       |   |-- price_alerts.py
|       |   |-- warranties.py
|       |   +-- admin.py
|       |-- services/
|       |   |-- __init__.py
|       |   |-- auth_service.py
|       |   |-- product_service.py
|       |   |-- order_service.py
|       |   |-- notification_service.py
|       |   +-- price_tracker.py
|       |-- tasks/
|       |   |-- __init__.py
|       |   |-- price_tasks.py
|       |   |-- notification_tasks.py
|       |   +-- email_tasks.py
|       |-- utils/
|       |   |-- __init__.py
|       |   |-- decorators.py
|       |   |-- pagination.py
|       |   +-- validators.py
|       +-- schemas/
|           |-- __init__.py
|           |-- user_schema.py
|           |-- product_schema.py
|           +-- order_schema.py
+-- frontend/
    |-- package.json
    |-- public/
    |   +-- index.html
    +-- src/
        |-- index.js
        |-- App.jsx
        |-- api/
        |   |-- client.js
        |   |-- products.js
        |   |-- auth.js
        |   +-- orders.js
        |-- components/
        |   |-- layout/
        |   |   |-- Navbar.jsx
        |   |   +-- Footer.jsx
        |   |-- products/
        |   |   |-- ProductCard.jsx
        |   |   |-- ProductGrid.jsx
        |   |   |-- SpecTable.jsx
        |   |   +-- PriceChart.jsx
        |   |-- comparison/
        |   |   +-- ComparisonView.jsx
        |   |-- reviews/
        |   |   +-- TechReview.jsx
        |   +-- auth/
        |       |-- LoginForm.jsx
        |       +-- RegisterForm.jsx
        |-- pages/
        |   |-- HomePage.jsx
        |   |-- ProductPage.jsx
        |   |-- CategoryPage.jsx
        |   |-- ComparisonPage.jsx
        |   |-- CartPage.jsx
        |   |-- ProfilePage.jsx
        |   +-- AdminDashboard.jsx
        |-- store/
        |   |-- store.js
        |   |-- authSlice.js
        |   +-- cartSlice.js
        |-- hooks/
        |   +-- useAuth.js
        +-- styles/
            +-- global.css

Setup and Installation

Prerequisites

• Docker and Docker Compose installed
• Git

Quick Start

1. Clone the repository:

   git clone https://github.com/your-org/techzone.git
   cd techzone

2. Create environment file:

   cp .env.example .env
   # Edit .env with your configuration values

3. Build and start all services:

   docker-compose up --build

4. Run database migrations (first run):

   docker-compose exec backend flask db upgrade

5. Seed the database with initial data (optional):

   docker-compose exec backend flask seed

6. Access the application:

   • Frontend: http://localhost
   • API: http://localhost/api
   • Elasticsearch: http://localhost:9200

Local Development (without Docker)

Backend

cd backend
python -m venv venv
source venv/bin/activate      # Linux/Mac
venv\Scripts\activate         # Windows
pip install -r requirements.txt
flask db upgrade
python run.py

Frontend

cd frontend
npm install
npm start

Celery Worker

cd backend
celery -A celery_worker.celery worker --loglevel=info

API Documentation

Authentication

Method	Endpoint	Description	Auth
POST	/api/auth/register	Register new user	No
POST	/api/auth/login	Login, receive JWT	No
POST	/api/auth/refresh	Refresh access token	JWT
GET	/api/auth/me	Get current user	JWT
PUT	/api/auth/me	Update profile	JWT

Products

Method	Endpoint	Description	Auth
GET	/api/products	List products (paginated)	No
GET	/api/products/:id	Get product details	No
POST	/api/products	Create product	Admin
PUT	/api/products/:id	Update product	Admin
DELETE	/api/products/:id	Delete product	Admin
GET	/api/products/search	Full-text search	No
GET	/api/products/:id/specs	Get product specifications	No
GET	/api/categories	List all categories	No
GET	/api/categories/:id/products	Products by category	No

Orders

Method	Endpoint	Description	Auth
POST	/api/orders	Create order	JWT
GET	/api/orders	List user orders	JWT
GET	/api/orders/:id	Get order details	JWT
PUT	/api/orders/:id/cancel	Cancel order	JWT

Reviews

Method	Endpoint	Description	Auth
GET	/api/products/:id/reviews	Get product reviews	No
POST	/api/products/:id/reviews	Submit review	JWT
PUT	/api/reviews/:id	Update review	JWT
DELETE	/api/reviews/:id	Delete review	JWT
GET	/api/products/:id/tech-review	Get tech/editorial review	No
POST	/api/products/:id/tech-review	Create tech review	Admin

Comparisons

Method	Endpoint	Description	Auth
POST	/api/comparisons	Create comparison list	JWT
GET	/api/comparisons	Get user comparisons	JWT
GET	/api/comparisons/:id	Get comparison details	No
PUT	/api/comparisons/:id/products	Add/remove products	JWT

Price Alerts

Method	Endpoint	Description	Auth
POST	/api/price-alerts	Create price alert	JWT
GET	/api/price-alerts	List user alerts	JWT
DELETE	/api/price-alerts/:id	Delete alert	JWT
GET	/api/products/:id/price-history	Get price history	No

Warranties

Method	Endpoint	Description	Auth
POST	/api/warranties	Register warranty	JWT
GET	/api/warranties	List user warranties	JWT
GET	/api/warranties/:id	Get warranty details	JWT
POST	/api/warranties/:id/claim	Submit warranty claim	JWT

Admin

Method	Endpoint	Description	Auth
GET	/api/admin/dashboard	Dashboard statistics	Admin
GET	/api/admin/users	List all users	Admin
PUT	/api/admin/users/:id	Update user role/status	Admin
GET	/api/admin/orders	List all orders	Admin
PUT	/api/admin/orders/:id	Update order status	Admin

User Roles

Role	Permissions
Guest	Browse products, search, view reviews, view comparisons
Customer	All guest permissions + place orders, write reviews, create price alerts, manage warranties, save comparisons
Admin	All customer permissions + manage products/categories/brands, write tech reviews, manage orders, view dashboard, manage users

Business Logic

Price Alert Engine

• Celery beat schedules price checks every 6 hours.
• When a product's current price is less than or equal to a user's target price, an email notification is dispatched and the alert is marked as triggered.
• Price history records are created each time a product price is updated, enabling trend charts.

Order Lifecycle

1. Pending - Order created, awaiting payment.
2. Paid - Payment confirmed.
3. Processing - Order being prepared.
4. Shipped - Order dispatched, tracking number assigned.
5. Delivered - Order received by customer.
6. Cancelled - Order cancelled (only from Pending or Paid status).

Review Scoring

• User reviews: 1-5 star rating with optional text.
• Tech reviews: Multi-dimensional scoring (performance, value, design, features, battery) averaged into a final score out of 10.
• Products display both aggregate user rating and editorial score.

Warranty Flow

1. Customer registers a warranty by providing order item and serial number.
2. System validates purchase and sets expiry based on product warranty duration.
3. Customer can submit claims against active warranties.
4. Admins review and resolve warranty claims.
5. Automated email reminders are sent 30 days before warranty expiry.

Roadmap

• Wishlist functionality
• Product Q&A section
• Loyalty points and rewards program
• Multi-currency and internationalization
• AI-powered product recommendations
• Augmented reality product preview
• Seller marketplace (multi-vendor support)
• Mobile application (React Native)
• Real-time chat support integration
• Advanced analytics dashboard with sales forecasting

License

This project is proprietary software. All rights reserved.